CASE STUDIES

POWER EFFICIENCY

Most illuminated commercial signage utilize conventional technologies, such as incandescent or fluorescent lamps for its illumination. LECDTM requirement for typical commercial signs by as much as 90 percent.

The typical efficiency of incandescent and fluorescent lights is 15 and 75 lumens per watt, respectively. While the efficiency of an LECDTM lamp can be as low as 4 lumens per watt, even a low efficiency lamp uses dramatically less power than conventional light sources for a given task. LECDTM signage is equally visible at lower overall power consumption, because the source of the light is directly viewed, rather than a reflection. A 4foot x 14foot sign using conventional T12 high output fluorescent lamps would require 550 Watts. LECDTM technology reduces the power demand to less than 12.5 Watts by forming letters and symbols with lasercut LECDTM lamp panels, thus lighting individual characters rather than the entire sign. Unlike incandescent and fluorescent lamps, the flat and uniformly lit LECDTM lamp produces virtually no heat, glare, or halo even in adverse weather conditions, therefore, little light is wasted. Reflected light configurations, widely used for illuminated signage, waste much of their energy in heat and by lighting the ground or sky.

OPERATIONAL COST REDUCTION

The initial cost outlay for LECDTM signage is comparable to conventionally lit products. With the added advantage that LECDTM signage can last up to 50,000 (or more) hours with little maintenance, lifecycle costs of LECDTM signs are significantly reduced. Their long service life reduces costs associated with frequent bulb replacement, an important for lighted signs that are difficult and/or costly to access. In applications where remote power is required to illuminate a sign, a solar-powered LECDTM solution could actually be less costly than conventional lighting alternatives. There are approximately 19 million electric signs installed in the United States with total power consumption of about 17 billion kWh per year. The current operational cost of these signs is approximately $1.7 billion per year. If all these signs used LECDTM technology, the energy cost could be reduced by at least 90 percent, with savings of approximately $1.5 billion per year or 15.3 billion kWh. Cost savings from reduced energy alone would more than repay the cost of the sign over its expected lifetime. When lower maintenance costs are included, the break-even point for replacing fluorescent and incandescent signs with LECDTM technology is approximately five to seven years (depending on the labor costs associated with lamp replacement).

VISUAL NIGHT POLLUTION REDUCTION

The solution to light pollution lies in quality lighting systems that enhance nighttime ambiance rather than reproducing inappropriate daylight conditions. A powerful design approach is to directly light the surface of objects that need to be visible with minimal use of reflected light, and matching its spectra to human eye sensitivities. Because the required light levels (and power demands) of signage can be remarkably low, surface light sources and associated fixture design are the critical parameters. LECDTM lighting systems can dramatically reduce unnecessary nighttime illumination, while cutting energy consumption and improving visibility. This produces a better, more visible sign with reduced energy use.

BUNDLED BENEFITS

LECDTM lighting has inherent mechanical strength because of its ceramic thermal fusion and steel structure. As a result, LECDTM lamps are well suited for outdoor applications with high environmental stress. Landscape lighting applications (often termed "lightscaping"), including entrance and exit signs, security warnings, building numbers, address markers, and pathway elements like flagstones, step edges, and corner markers, offer substantial market opportunities. Beyond the energy savings, LECDTM lamps provide aesthetic advantages as well. On walkways, for example, LECDTM lighting illuminates the path rather than the entire path area. The durability of the LECDTM ceramiconsteel technology also permits rough handling and outdoor exposure without damage. Low power levels and long service life provide an attractive life-cycle cost, as well as an ideal lighting platform for usage with a wide range of conventional and alternative energy solutions, including: grid power, solar (photovoltaic), wind, battery, fuel cells, etc. LECDTM lighting is also appropriate for many indoor applications for both residential and commercial buildings. Low area lighting levels can be combined with brighter LECDTM lighting for steps, lighted controls, and signs. Because they are so rugged, LECDTM lamps are also particularly well suited for locations prone to vandalism.