Light emitting diode lamp
US-9200764-B2 · Dec 1, 2015 · US
Runway sign having a replaceable single LED lamp
US9103523B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9103523-B2 |
| Application number | US-201313743808-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 17, 2013 |
| Priority date | Jan 17, 2013 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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A two-sided airfield runway sign with direct illumination by a single LED lamp. 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
Opening claim text (preview).
What is claimed is: 1. A two-sided airport runway sign ( 10 ), comprising: a rectangular, translucent front face ( 11 ), a rectangular, translucent rear face ( 11 ) generally parallel to the front face ( 11 ) and longitudinally separated from the front face ( 11 ) by first and second longitudinal edges ( 17 , 16 ), the front and rear faces ( 11 ) and the first and second longitudinal edges ( 17 , 16 ) bounding an interior volume of the runway sign ( 10 ); and a single LED la…
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Operations & Transport · mapped topic
Operations & Transport · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9103523B2 cover?
- A two-sided airfield runway sign with direct illumination by a single LED lamp. 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…
- Who is the assignee on this patent?
- Tessnow Thomas, Albright Kim, Boyd Jr Ronald E, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification F21V7/0066. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 11 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).