Exit sign illuminated by color LEDs
AssigneeDeNovo Lighting, LLC
InventorGeorgiana Hsu
Life of this patent
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Abstract
An exit sign comprising a housing, a plurality of green color LEDs and red color LEDs or bicolor green and red color LEDs positioned in the housing for emitting both a green color light and a red color light with a filter holder for holding a selected green color filter or a selected red color filter for passing the selected green color light or selected red color light to a stencil having openings for passing the selected green color light or selected red color light to an observer. Yellow color LEDs can be alternatively positioned in the housing for emitting yellow color light comprising both green color light and red color light. White color LEDs can also be alternatively positioned in the housing for emitting white color light also comprising both green color light and red color light.
Claims22
An exit sign comprising:
- a housing,
- a plurality of green color LEDs and red color LEDs positioned in said housing for concurrently emitting both green color light and red color light, wherein the plurality of green color LEDs are in an alternating arrangement with the red color LEDs,
- at least one filter holder positioned in said housing for holding one of a selected green color filter and a selected red color filter such that one of a green color light and a red color light, respectively, can pass through said one of a selected green color filter and a selected red color filter from the plurality of green color LEDs and red color LEDs,
- at least one stencil defining openings that form a symbol indicating a route of egress viewable by an observer, wherein said at least one stencil is juxtaposed to the at least one filter holder such that said one of a green color light and a red color light can pass through said at least one stencil,
- DC circuitry in a permanent operative connection with all of the plurality of green color LEDs and red color LEDs such that all of the plurality of green color LEDs and red color LEDs can be energized at a same time, and
- an AC converter for converting a source of AC electrical power to provide DC power to said DC circuitry.
An exit sign comprising:
- a housing,
- a plurality of bicolor green and red color LEDs positioned in said housing for emitting yellow color light,
- at least one filter holder positioned in said housing for holding one of a selected green color filter and a selected red color filter such that one of a green color light and a red color light, respectively, can pass through said one of a selected green color filter and a selected red color filter from the plurality of bicolor green and red color LEDs,
- at least one stencil defining openings that form a symbol indicating a route of egress viewable by an observer, wherein said at least one stencil is juxtaposed to the at least one filter holder such that said one of a green color light and a red color light can pass through said at least one stencil,
- DC circuitry in a permanent operative connection with all of the plurality of bicolor green and red color LEDs such that all of the plurality of bicolor green and red color LEDs can be energized at a same time, and
- an AC converter for converting a source of AC electrical power to provide DC power to said DC circuitry.
Dependencies are inferred from the claim text.