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CS114 bảng dữ liệu(PDF) 3 Page - Lumileds Lighting Company

tên linh kiện CS114
Giải thích chi tiết về linh kiện  Illuminated Signs
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nhà sản xuất  LUMILEDS [Lumileds Lighting Company]
Trang chủ  http://www.luxeon.com
Logo LUMILEDS - Lumileds Lighting Company

CS114 bảng dữ liệu(HTML) 3 Page - Lumileds Lighting Company

  CS114 Datasheet HTML 1Page - Lumileds Lighting Company CS114 Datasheet HTML 2Page - Lumileds Lighting Company CS114 Datasheet HTML 3Page - Lumileds Lighting Company CS114 Datasheet HTML 4Page - Lumileds Lighting Company  
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CS114 Illuminated Signs Case Study 20150330 ©2015 Lumileds Holding B.V. All rights reserved.
3
Sign of the Times
With the basic concept in place, Silicon Constellations built
a 1” x 1.5” light module consisting of a single cool white
LUXEON Rebel LED mounted on a special board assembly
that maximizes thermal dissipation and allows the body of the
cabinet to be used as a heatsink. The module was named the
Rebellious I™ after the LED that made it possible.
Arrow Sign Company then used sample modules to build a
prototype of the sign for evaluation by airport architects. A live
demo in early 2008 included side-by-side comparisons of the
Rebellious I and four competing LED modules. The visible dif-
ference in performance helped seal the deal.
“The Rebellious I was twice as bright as the other modules.
That helped assure the architects that our signs would deliver
brightness levels equivalent to the exist- ing signs,” said
Charlie Stroud, CEO of Arrow Sign Company. “The lean look of
the box was a critical design element for the airport architects,
but it wouldn’t have mattered if we couldn’t also show that we
could meet the brightness benchmarks.”
Additional design and engineering support was provided by
Future Lighting Solutions, the exclusive supplier of LUXEON
LEDs. Silicon Constellations uti- lized Future’s proprietary
Usable Light Tool to calculate how many LEDs would be
required to light the signs. The firm also consulted with
Future’s engineers to identify appropri- ate dimmable LED
drivers and an optic vendor that could provide the elliptical
optic needed for the airport project as well as a full range
of other optic solutions to suit different applications for the
Noveseo product.
Lighting the Way
The first Noveseo-powered signs were installed in fall 2008 in
the airport’s outdoor ground transportation island. Like most
of the approximately 300 signs which will ulti- mately be built
to provide directional signage for airport visitors, the initial
signs are 7 feet wide and 20 inches high, with two strings of
seven Rebellious I modules running parallel to each other at
the top and bottom edges of the cabinet. In total, then, just
14 LEDs were required to light a single seven-foot sign. Other
form factors, both shorter and longer, will utilize the same
parallel configu- ration with proportionately fewer or more
LED modules based on cabinet size.
LUXEON Rebel’s high flux levels coupled with the thermal
management innova- tions of the Rebellious I module are
allowing 12” placement between modules instead of the 2”,
4” or 6” intervals used in other LED products, both lowering
material costs and simplifying the assembly process. Each
sign runs at a constant current drive of up to 700mA, requires
just 2.25 watts of power per module, and is designed to be
dimmable by remote control using Mark VII wired or ZigBee™
wireless dimming controllers.
With LUXEON LED technology leading the way, the signs
also reduce energy con- sumption by more than 70% over
fluorescent or neon backlight versions, further lower costs by
lasting at least four times longer between bulb replacements,
and provide a ROHS-compliant mercury-free and lead-free
light source.
Beyond those ‘green’ advantages that are often associated
with solid-state light- ing applications, the major achievement
of the San Jose airport wayfinding sign project remains the
ultra-slim cabinet profile and the striking new look it offers for
illuminated signage. Once again, Silicon Valley has given birth
to technology and innovation that promises to spread around
the world.
The idea proposed to David Mastrandrea, architect at Jacobs Carter Burgess was to
illuminate the signs from within by placing LED modules along the top and bottom
edge of each sign and use an acrylic diffuser panel behind the sign faces; creating
the same effect as a backlight without requiring space in the cabinet to mount a
backlight panel.


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