US 10,488,000 B2Granted

Thin profile surface mount lighting apparatus

AssigneeDMF, Inc.

InventorsMichael D. Danesh, Vincent Williams, Mark Jongewaard

Life of this patent

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Abstract

A thin profile surface mount LED lighting apparatus includes a housing, an LED board including multiple uniformly distributed LEDs, and a lens. The lens has a back side facing the LED board and a front side that provides a downward facing surface when the LED lighting apparatus is installed in an opening of a ceiling. The lens is disposed with respect to the LED board such that the LEDs illuminate the back side of the lens. A first spacing of the LEDs causes resulting light from the downward facing surface of the lens to be substantially uniform during operation of the apparatus. In one example, a thin front edge of a sidewall of the housing, forming a perimeter around the lens, is flush with the lens and is appreciably thin (e.g., a thickness of less than three millimeters), and a depth of the sidewall housing is less than one inch.

Claims30

Dependent claims

An LED lighting apparatus, comprising:

a housing comprising at least one sidewall having a front facing edge and a back facing edge positioned adjacent to a ceiling when the LED lighting apparatus is installed in an opening of the ceiling, wherein a depth of the at least one sidewall of the housing, between the front facing edge and the back facing edge, is less than one inch such that the apparatus does not visibly appear to protrude substantially from a surface of the ceiling when the apparatus is installed in the opening of the ceiling;
an LED board coupled to the housing, the LED board comprising a plurality of LEDs;
and
a lens coupled to the housing, the lens having a back side facing the LED board and a front side opposite to the back side, wherein the front side of the lens provides a downward facing surface when the LED lighting apparatus is installed in the opening of the ceiling, the lens being disposed with respect to the LED board such that the plurality of the LEDs illuminate the back side of the lens,
wherein:
a first spacing of the plurality of the LEDs on the LED board causes resulting light from the downward facing surface of the lens to be substantially uniform during operation of the apparatus;
and
the front side of the lens, providing the downward facing surface when the LED lighting apparatus is installed in the opening in the ceiling, is essentially flush with the front facing edge of the at least one sidewall of the housing.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/016,040Filed 22 Jun 2018 · continuation in part
Priority: 22 Jun 2017
Published: US 2018/0372284 A127 Dec 2018
Granted: 26 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

F21S 8/043
Intended only for mounting on a ceiling or the like overhead structures: mounted by means of a rigid support, e.g. bracket or arm
F21K 9/68
Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction: details of reflectors…
F21S 8/026
Of recess-mounted type, e.g. downlighters: intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
F21S 8/03
Lighting devices intended for fixed installation: of surface-mounted type

Family

Application62/523,640Us provisional application · filed 22 Jun 2017
Application62/552,126Us provisional application · filed 30 Aug 2017
Application29/648,046Parent of this continuation-in-part · filed 17 May 2018
US 2018/0372284 A1Pre-grant publication · published 27 Dec 2018
US D905,327 S1Related patent
US 10,488,000 B2This patent

From the US filing history. Foreign family members aren’t listed.