Replaceable single LED lamp for runway sign
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Dec 6, 2016
Grant Date -
Jul 17, 2014
app pub date -
Jan 17, 2013
filing date -
Jan 17, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A replacement lamp for an airport runway sign. Light is produced by a linear array of white-light LEDs. A cylindrical lens is mounted longitudinally adjacent to the LEDs, and collects a central portion of the light emitted from the LEDs. A pair of inclined surfaces extend from the lateral edges of the LEDs to respective lateral edges of the cylindrical lens. The inclined surfaces have a rough surface texture and reflect light diffusely. The inclined surfaces collect a peripheral portion of the light emitted from the LEDs, and direct the reflected light toward the cylindrical lens. The LEDs, cylindrical lens and inclined surfaces are all mechanically supported by a heat sink. The replacement lamp is placed into a runway sign near its top or bottom edge, and illuminates both viewing surfaces of the runway sign simultaneously without a diffuser.
First Claim
Family
International Classification(s)
- E01F:ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CO....
- F21V:FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES....
- F21Y:INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21L,....
- G09F:DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLA....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- B64F:GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS
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