The winning design, which used LED technology, was selected by a jury from 3 finalists, and was created by architects Thomas Phifer and Partners and Office for Visual Interaction, Inc. (OVI), an architectural lighting consultancy based in New York City.
The lighting solution for the new streetlight combines current hi-flux LED technology with state-of-the-art lensing optics in a small, slim, oval-shaped profile, which provides the structural framework and heat sink for the LED modules.
|Lamp plan view|
The result is a significantly different from the standard "cobra head" luminaire. An oval profile was preferred to maximize the surface area available to provide heat sinking for the LEDs.
Within the luminaire, linear arrays of LEDs are grouped into 4 segments. Each 16-LED segment has an optical lens that incorporates light-shaping film diffuser technology to achieve the required light distribution pattern.
The design of the luminaire is modular to allow interchangeability of components between the various streetlight configurations (e.g. long and short arm versions, as well as the park/pedestrian light configuration).
Furthermore, LEDs contain no mercury and do not produce any harmful ultraviolet light. "Also, LEDs are robust and not susceptible to vibration inherent in roadway applications," added Sundin.
LED Specialists, which specializes in the design and integration of high-brightness LED technology for illumination applications, was brought in by OVI to help develop the LED elements and driver subsystem.
Using lighting specifications from the city, OVI and LED Specialists determined the type, quantity and configurations of LEDs needed to both meet the illuminance requirements and fit within the architectural/mechanical design on the complete street light system.
|Lights at sunset|
LED Specialists also determined the requirements for the electronic driver modules that provide power and control to the LED modules.
The segmented/modular luminaire design streamlines manufacturing and handling, and is inherently interchangeable to accommodate the next generation of LED technology available to the market, said Sundin. In the future, it will be possible to swap out the LED modules with another segment that may have fewer LEDs with higher power, for example. "Rather than outdating itself in 10-20 years, the proposed LED solution will be able to evolve with current technology and improve with age, becoming less costly and consuming less energy over time," said Peiniger.
The new LED streetlight is a work in progress, and the city is likely to create a working prototype within the next few years. New Yorkers can expect to see the first LED streetlights based on this design within the near future.
Project Name: City Lights Competition - New York
Client: The City of New York represented by New York City's Department of Design and Construction in partnership with the Department of Transportation
Architect: Thomas Phifer and Partners: Thomas Phifer with Christoph Timm, Joseph Sevene, Michael Frei
Structural Engineer: Werner Sobek New York - Werner Sobek, Wolfgang Rudolph
Lighting Consultant: Office for Visual Interaction, Inc. (OVI) - Jean M. Sundin, Enrique Peiniger