US 10,473,318 B2Granted

LED fixture with air gap and heat dissipation

AssigneeAppleton Grp LLC

InventorsHarsha N. Devappa, Anoop R. Zutti, Dawn M. Grandsart, Chethan S B, Timothy E. Graff

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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.

Claims9

Dependent claims

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 (212);
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 (219);
wherein, said driver housing (208) and said base (206) are arranged in a spaced apart configuration, with an air gap positioned between said driver housing (208) and said base (206), wherein said fixture (200) further comprises:
a collar (210), separate from said base (206) is directly connected to said base (206);
and
a globe (212) threadably connected to said collar (210);
wherein said collar (210) has threads complementary to threads configured on said globe (212);
and
wherein said driver housing (208) is connected to said heat sink (202) via a plurality of fasteners.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/950,653Filed 11 Apr 2018
Priority: IN 2018210004454 Jan 2018
Published: US 2019/0203924 A14 Jul 2019
Granted: 12 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

F21V 29/773
With essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section: the planes containing the fins or…
F21V 15/01
Protecting lighting devices from damage: housings, e.g. material or assembling of housing parts
F21V 17/12
Characterised by specific fastening means or way of fastening: by screwing
F21V 23/008
Enclosed in a casing: the casing being outside the housing of the lighting device