PresentationINTERPRETING A PAST TIME
The HR fixture is the outcome of an exercise of interpretation and a tribute to the gas lanterns and modernist columns of nineteenth-century towns and cities—revitalizing a legacy, by merging their light, slender lines with cutting-edge technology.
ORIGIN AND EVOLUTION
Since the first model appeared more than a decade ago, the HR series has helped restore the authenticity of urban space, reviving a time when the democratization of beauty and socialization of art were the aspirations of the generation of their creators.
After the incorporation of the latest LED technology, in 2015, the conceptual leadership of the aesthetic design line of this series was endorsed when it was named the best lighting concept in Spain by prestigious lighting magazine, Iluminet.
MATERIALS AND STRUCTURE
The HR luminaire body is made of fibreglass, a material commonly used in the naval industry to prevent the degrading effect caused by aggressive environments, such as the marine. Inside the luminaire, an extruded, anodized aluminium 6063-T6 chassis acts as a thermal sink.
The luminaire is integrated into a cylindrical section column, in the form of a truncated cone made of extruded, anodized aluminium.
The HR luminaire is based on the principle of direct thermal dissipation between the LED PCB and the compact aluminium chassis. The dissipation body comprises a continuous heat pipe of anodized aluminium 6063-T6, which achieves thermal conductivity levels of 200 W/metre Kelvin, compared to 130 W/metre Kelvin of aluminium injection. The low porosity of anodized aluminium plus a thermal pad over the contact surface between the PCB and the dissipation body significantly reduce the diode’s junction temperature.
According to the US Energy Agency, relief on the upper surface of the fixture severely hinders the dissipation process that takes place by convection, becoming a critical element for performance and life.
To overcome this challenge and to enhance the natural self-cleaning process, SETGA has equipped the HR luminaire with a completely uniform and sloped upper surface, thus preventing dirt accumulation, and the ensuing obstruction and inefficiency of the thermal dissipation system.
Here are the basic dimensions of the HR series:
Standard Photometries. The SETGA optical department can study additional configurations adapted to each project.
Architect and Urban Planner
Lighting designer (Barcelona)