LED FIXTURE

• US 20190203924A1
• Filed: 04/11/2018
• Published: 07/04/2019
• Est. Priority Date: 01/04/2018
• Status: Active Grant

• Current Assignee: Appleton Grp, LLC (Emerson Electric Company)
• Original Assignee: Appleton Grp, LLC (Emerson Electric Company)
• Inventors: Devappa, Harsha N., Zutti, Anoop R., Grandsart, Dawn M., S B, Chethan
• Granted Patent: US 10,473,318 B2
• Time in Patent Office: Days
• 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 17/12 by screwing
• CPC Class Codes: F21V 23/008 the casing being outside the housing of the lighting device
• CPC Class Codes: F21V 23/009 the casing being inside the housing of the lighting device
• CPC Class Codes: F21V 29/503 of light sources cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H01L33/64
• CPC Class Codes: F21V 29/508 of electrical circuits
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 3/02 characterised by the shape
• 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]

Abstract

An LED fixture (200) that facilitates effective heat dissipation of an array of LEDs, having improved thermal performance; and is easy to mount or dismount. The LED fixture (200) includes a heat sink (202) having a hollow configuration, and a plurality of fins (204) extending circumferentially and outwardly from the heat sink (202). The LED fixture (200) further comprises a base (206) configured at an operative bottom portion of the heat sink (202), and a driver housing (208) connected to an operative top surface of the heat sink (202). The base (206) is configured to support an array of LEDs. The driver housing (208) is configured to accommodate a plurality of LED drivers. The driver housing (208) and the base (206) are arranged in a spaced apart configuration.

Claims

1. An LED fixture (200) comprising:

a heat sink (202) having a hollow configuration;

a plurality of fins (204) extending circumferentially from said heat sink (202);

a base (206) configured at an operative bottom portion of said heat sink (202) to support an array of LEDs; and

a driver housing (208) connected to an operative top surface of said heat sink (202), said driver housing (208) configured to accommodate a plurality of LED drivers;

wherein, said driver housing (208) and said base (206) are arranged in a spaced apart configuration.

2. The LED fixture (200) as claimed in claim 1, wherein said fixture (200) comprises:

a collar (210) extending in an operative downward direction from said base (206); and

a globe (212) threadably connected to said collar (210).

3. The LED fixture (200) as claimed in claim 2, wherein said collar (210) has internal threads complementary to external threads configured on said globe (212).

4. The LED fixture (200) as claimed in claim 1, wherein said heat sink (202) is bowl shaped.

5. The LED fixture (200) as claimed in claim 1, wherein a drain hole (214) is configured on said driver housing (208) to drain the water accumulated on an operative top surface of said driver housing (208).

6. The LED fixture (200) as claimed in claim 1, wherein a ratio of a circumference of said heat sink (202) to a length of said fins (204) is 1:

0.3.

7. The LED fixture (200) as claimed in claim 1, wherein said driver housing (208) is connected to said heat sink (202) via a plurality of fasteners.

8. The LED fixture (200) as claimed in claim 1, wherein each of said fins (204) has chamfered edges.

9. The LED fixture (200) as claimed in claim 1, further comprising a protective guard member connected to said heat sink (202) to protect said globe (212).

10. The LED fixture (200) as claimed in claim 1, wherein said driver housing (208) includes a plurality of mounting extensions for facilitating mounting or suspension of said LED fixture (200).