LED STREET LAMP

• US 20150153033A1
• Filed: 10/08/2014
• Published: 06/04/2015
• Est. Priority Date: 11/30/2013
• Status: Active Grant

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: KUO, SHIEN-CHENG
• Granted Patent: US 9,541,253 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21S 8/08 with a standard F21S6/00 takes precedence
• CPC Class Codes: F21V 1/00 Shades for light sources , i.e. lampshades for table, floor, wall or ceiling lamps
• CPC Class Codes: F21V 29/80 with pins or wires
• CPC Class Codes: F21V 29/85 characterised by the material liquid coolants F21V29/56
• CPC Class Codes: F21V 29/87 Organic material, e.g. filled polymer composites; Thermo-conductive additives or coatings therefor
• CPC Class Codes: F21V 5/007 Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane combination of two or more refractors F21V5/008
• 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 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y02B 20/72 in street lighting

Abstract

LED light sources utilized in a street lamp include a base seat, a lamp shade mounted on the base seat, and a top housing coupled with the base seat. The base seat includes a plurality of first heat dissipation columns integrated with the base seat. The lamp shade includes a plurality of the LED light sources. The top housing includes a plurality of second heat dissipation columns integrated with the top housing. The base seat, the first heat dissipation columns, the top housing, and the second heat dissipation columns are made of a polyamide resin containing a graphite powder.

Claims

1. An LED street lamp comprising:

a base seat comprising a plurality of first heat dissipation columns integrated with the base seat;

a lamp shade mounted on the base seat;

a plurality of LED light sources are positioned on the lamp shade; and

a top housing coupled to the base seat, the top housing comprises a plurality of second heat dissipation columns integrated with the top housing;

wherein the base seat, the first heat dissipation columns, the top housing, and the second heat dissipation columns are made of a polyamide resin containing a graphite powder.

2. The LED street lamp as claimed in claim 1, wherein the base seat comprises:

a bottom plate; and

a plurality of threaded blind holes positioned on one surface of the bottom plate facing the light shade;

wherein each of the plurality of threaded blind holes is recessed toward a surface of the bottom plate away from the light shade to form a receiving portion extending away from the light shade.

3. The LED street lamp as claimed in claim 2, wherein:

the lamp shade comprises a plurality of threaded holes corresponding to the threaded blind holes;

the top housing includes a plurality of hollow protrusion portions protruding away from the lamp shade; and

the protrusion portions are matched with the threaded holes.

4. The LED street lamp as claimed in claim 1, wherein the first heat dissipation columns are cylinder shaped.

5. The LED street lamp as claimed in claim 1, wherein one end of each of the first heat dissipation columns away from the base seat has a larger diameter than the other end adjacent to the bottom plate.

6. The LED street lamp as claimed in claim 1, wherein the first heat dissipation columns are substantially perpendicular to the base seat.

7. The LED street lamp as claimed in claim 1, wherein the second heat dissipation columns are substantially perpendicular to the top housing.

8. The LED street lamp as claimed in claim 1, wherein the first heat dissipation columns are evenly spaced from each other.

9. The LED street lamp as claimed in claim 1, wherein the second heat dissipation columns are evenly spaced from each other.

10. The LED street lamp as claimed in claim 1, wherein the top housing comprises:

a plurality of light transmission holes corresponding to the LED light sources; and

a plurality of annular sidewalls extend from the light transmission holes;

wherein each of the annular sidewalls correspondingly encloses one of the light transmission holes.

11. The LED street lamp as claimed in claim 10, wherein one end of each annular sidewalls away from the light transmission hole defines an annular recessed portion.

12. The LED street lamp as claimed in claim 11, wherein an end of each of the annular sidewalls away from the light transmission hole is larger than each of the light transmission holes.

13. The LED street lamp as claimed in claim 10, wherein the LED street lamp further comprises a plurality of lenses, and each of the lenses is correspondingly coupled to one of the annular sidewalls.

14. The LED street lamp as claimed in claim 1, wherein the LED street lamp further comprises a peripheral groove positioned along the periphery of the base seat.

15. The LED street lamp as claimed in claim 14, wherein the LED street lamp further comprises a peripheral projection positioned along the periphery of the top housing and latched in the peripheral groove.