US 8,939,615 B2Granted

Optically efficient notification device for use in life safety wall strobe applications

AssigneeCooper Technologies Company

InventorsWei Rong, Joseph Kosich, Crystal Pierz

Life of this patent

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Abstract

A wall notification device described herein can draw a lower current by providing a more efficient reflector configuration. The reflector is designed to be positioned on a wall and provide sufficient light output in each of the requisite directions, as required by the UL 1971 standard. The notification device has a reflector unit having a base having a curved portion centered on the vertical axis and a flat portion extending from the curved portion; a reflective flange extending from a location near a top side of the base; a first and second specular protrusion extending from the curved portion of the base; a third and fourth specular protrusion extending from the base; a fifth and sixth specular protrusion extending from the curved portion of the base; and a sixth and seventh specular protrusion extending form the flat portion of the base.

Claims20

Dependent claims

A notification device comprising:

a housing;
and
a reflector unit mounted to the housing, the reflector unit comprising:
a base, wherein the housing is disposed around an outer perimeter of the base, wherein the base comprises:
a curved portion;
and
a reflective flat portion extending from the curved portion on a first side of a vertical axis and a second side of the vertical axis, wherein the reflective flat portion surrounds at least a portion of an outer perimeter of the curved portion;
and
a first specular protrusion and a second specular protrusion that extend from within a curved interior surface of the curved portion of the base, wherein the first specular protrusion and the second specular protrusion are positioned on the curved surface of the curved portion away from the outer perimeter of the curved portion, wherein a surface of the first specular protrusion and a surface of the second specular protrusion are substantially directed toward a lower edge of the base near the vertical axis, wherein the surface of the first specular protrusion and the surface of the second specular protrusion extend from the curved surface of the curved portion in a substantially orthogonal direction relative to a front surface of the reflective flat portion.

6 more elements

A reflector unit comprising:

a base comprising:
a curved portion centered on a vertical axis;
and
a flat portion extending from the curved portion on a first side of the vertical axis and a second side of the vertical axis, wherein the flat portion surrounds at least a portion of an outer perimeter of the curved portion;
a first specular protrusion and a second specular protrusion that extend from within a curved interior surface of the curved portion of the base in a substantially orthogonal direction relative to a front surface of the flat portion, wherein the first specular protrusion and the second specular protrusion are positioned on the curved interior surface of the curved portion away from the outer perimeter of the curved portion;
and
a third specular protrusion and a fourth specular protrusion extending from the flat portion and from the curved interior surface of the curved portion, wherein the third specular protrusion is positioned on the first side of the vertical axis and the fourth specular protrusion is positioned on the second side of the vertical axis, the third specular protrusion and the fourth specular protrusion each extending from a lower outer edge of the base and tapering in a direction parallel to the vertical axis, wherein a surface of the third specular protrusion is oriented to reflect light reflected by the first protrusion and wherein a surface of the fourth specular protrusion is oriented to reflect light reflected by the second protrusion.

4 more elements

A notification device, comprising:

a housing;
a reflector unit mounted to the housing, the reflector unit comprising:
a base comprising:
a curved portion;
and
a flat portion extending from the curved portion on a first side of a vertical axis and a second side of the vertical axis, wherein the flat portion surrounds at least a portion of an outer perimeter of the curved portion;
a first specular protrusion and a second specular protrusion that extend from within a curved interior surface of the curved portion of the base in a substantially orthogonal direction relative to a front surface of the flat portion, wherein the first specular protrusion and the second specular protrusion are positioned on the curved interior surface of the curved portion away from the outer perimeter of the curved portion;
and
a third specular protrusion and a fourth specular protrusion extending from the flat portion of the base and from the curved interior surface of the curved portion of the base, wherein the third specular protrusion is positioned on the first side of the vertical axis and the fourth specular protrusion is positioned on the second side of the vertical axis, and wherein the third specular protrusion and the fourth specular protrusion each taper toward the vertical axis, wherein a surface of the third specular protrusion is oriented to reflect light reflected by the first protrusion and wherein a surface of the fourth specular protrusion is oriented to reflect light reflected by the second protrusion;
and
a lens positioned over at least a portion of the reflector unit.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/953,471Filed 29 Jul 2013 · continuation
Priority: 14 Sep 2009
Published: US 2013/0308322 A121 Nov 2013
Granted: 27 Jan 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F21V 7/09
Optical design: with a combination of different curvatures
G08B 5/38
Using visible light sources: using flashing light
G09F 13/14
Signs, boards or panels, illuminated from behind the insignia: arrangements of reflectors therein
F21V
Functional features or details of lighting devices or systems thereof

Family

Application12/558,886Parent of this continuation · filed 14 Sep 2009
Application13/372,730Parent of this continuation · filed 14 Feb 2012
US 8,113,694 B2Parent of this continuation · filed 14 Feb 2012
US 2013/0308322 A1Pre-grant publication · published 21 Nov 2013
US 8,496,363 B2Parent of this continuation
US 2011/0063852 A1Published application
US 2012/0140488 A1Published application
US 8,939,615 B2This patent

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