LINDUSTRY NEWS - Cree Europe...the extension arm that connects the luminaire to the pole. Ruud said...
Transcript of LINDUSTRY NEWS - Cree Europe...the extension arm that connects the luminaire to the pole. Ruud said...
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Cree Lighting announces striking street-light luminaire
05 Apr 2012
Lighting design firm Speirs + Major collaborated with Cree Lighting to develop the new Aeroblades familyof luminaires for street and area lighting applications.
We keep hearing that LEDs free lighting manufacturers to adopt all new form inproducts, and Cree certainly went that route with the new Aeroblades family ofluminaires, developed in partnership with lighting designer Speirs + Major. Thevisually-striking design is also functional in terms of good thermal properties,support for different light-distribution patterns, and modularity for different lumen-output options.
We're challenging traditional fixture design," said Christopher Ruud, Cree Lightingvice president and general manager. "Aeroblades can only be an LED-basedfixture."
“While everybody else was creating standard shoeboxes and other conventionaldesigns, we were approached with a revolutionary technology that allowed us tothrow out all preconceptions of how urban luminaires should appear,” said KeithBradshaw, director, Speirs + Major. “The result is the Aeroblades luminaire,designed for the best LED performance and the form followed.”
To control the beam pattern, the luminaire design relies on the total internalreflection (TIR) lens optics called NanoOptic that Ruud Lighting developed for the
BetaLED brand prior to being acquired by Cree. Each of the blades has 10 LEDs, and each has a NanoOptic. Thedesign can support more than 20 optical distribution or beam patterns.
Modular configuration options
The Aeroblades concept can support configurations with two, four, or six blades. Cree will offer more than 300combinations. The luminaire can be mounted in a traditional manner for street and area lighting, or according to Ruudwith the blades sideways and mounted on a wall for some security applications.
The blade design was meant to add aesthetic value, but it also adds thermal mass that helps cool the LEDs. Ruudsays that the cooling enables Cree to drive the LEDs in Aerobaldes with 1A of current, whereas a similar opticalmodule used in the existing LEDway SLM luminaire can only be driven at 750 mA.
The option of a higher drive current means that Cree can offer a range of lumen-output packages based both on thenumber of blades in a luminaire and the specified drive current. Higher current may impact the life of the fixture tosome extent. But as Cree explained in a recent LEDs Magazine feature article, the latest LEDs can reliably toleratethe high current and provide access to what has been unused lumen capacity.
The new design also introduces some changes in how the driver is implemented in a pole-mounted light. The bladesdo not afford room for a typical driver. Cree will offer versions designed for the driver to be mounted in the base of thepole. Ruud said that putting a driver in the pole base is common in many European installations, and offers the optionof servicing the driver without a bucket truck.
For traditional installations that would normally locate the driver in the luminaire, Cree will supply drivers that mount inthe extension arm that connects the luminaire to the pole. Ruud said Cree expects to sell large volumes of bothversions.
About the Author
Maury Wright is the Editor of LEDs Magazine.
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Author
Maury Wright