BLOG

September 30, 2011

How do you choose an LED light for your landscape lighting? It’s not easy!

CAST Landscape Lighting LED’s – 7 Reasons for Choosing CAST LED Lights

Before LED’s, selecting outdoor lights was fairly straightforward. You could assume that the bulbs were pretty much the same – cheap lights used the same bulbs as the higher quality lights. All you had to do was select the light that looked sturdy, was made by a reputable manufacturer, and had a good warranty. Of course, looks could be deceiving, and warranties are often misleading. Still, before LED’s the decision was easier.

LED’s enter the stage. On the surface, they look great. They use about 1/3 the energy. They last up to 20 years. What could be better? The reality, however, is less rosy. The majority of these outdoor LED’s have failed to live up to their promises. The Dept. of Energy (DOE) launched a testing program (Caliper) that put these products on the block. The results were staggering; nearly every product failed to meet its claims. One LED manufacturer faces a lawsuit because their products were so abysmal.

The LED problems are light, heat, moisture, color, and fixture body integrity – a lot of factors to consider. Lets not forget, LED circuits are sensitive bundles of electronics. Would you put your cell phone in a leaky box, plant it in your back yard and expect it to last 20 years? It’s not easy to manufacturer a sensitive piece of electronics that will survive the worst of Mother Nature.

That’s why CAST Lighting spent four years developing its LED landscape lights. We hired some of the best engineers in the industry to custom-design our LED’s to withstand the outdoor environment and to perform optimally for up to 20 years. You would need a degree in semi-conductors to understand how they did it, but the following 7 points will (hopefully) hit the main points and help you decide.

CAST Lighting LED Engineered Wall Light - Replaceable LED board thermally mounted to solid bronze body and copper bracket - highly effective heat sinks.

CAST Lighting LED Engineered Wall Light - Replaceable LED board thermally mounted to solid bronze body and copper bracket - highly effective heat sinks.

1. We Stay Cool

Heat is the number one enemy of LED chips. They function well up to about 150 degrees (F), but above that they start to fail. CAST LED’s transfer heat into solid bronze bodies – massive and effective heat sinks. Enclosed fixtures are like ovens and air is the worst heat conductor. Even short periods of overheating can diminish light output dramatically and reduce LED life by 50%. The thick-walled bronze is extremely effective in pulling heat away from LED’s.

2. We Stay Dry

Water is the number one enemy of electronics (just drop your cell phone in a puddle and see what happens). Water can not only short-circuit the electronics, it leads to corrosion that eats away the entire assembly. CAST LED’s are protected from water intrusion – through multiple methods. All CAST LED components use conformal coatings or epoxy potting to protect from water intrusion. Additional protection is provided with compression fittings, sealed glass lenses, and high-temp silicone gaskets.

3. We Stay Solid

CAST LED’s are the only fixtures designed to last longer than the LED’s. Aluminum, copper, and brass fixtures may claim long warranties, but these metals corrode, bend, and break long before the LED fails. CAST bronze fixtures are the only ones that will never end up in a landfill.

CAST Lighting LED Path Light Module - converts CAST Lighting Path Lights to LED

CAST Lighting LED Path Light Module - converts CAST Lighting Path Lights to LED

4. We Range Far and Wide

CAST LED’s have a wide voltage range (8 to 18) and are protected from spikes and surges. Most other LED fixtures have narrower ranges and may not perform well throughout the range. A wide voltage range gives installers a lot of flexibility and allows them to connect many more fixtures on a single wire. The protection from voltage spikes and surges is especially important since such events are more common than you might think. A single spike can take out every LED in your yard unless your LED’s are protected.

5. We are Great Drivers

The driver is the circuitry that supplies and conditions power to the LED chip. The driver design is what separates the men from the boys in the LED world. A poorly designed driver with cheap components can greatly reduce the life of an LED. CAST LED’s have extremely high quality driver components rated for extreme conditions. One common component,  the electrolytic capacitor, is very susceptible to heat damage, and often leads to failure. Nearly all LED fixture manufacturers use them – CAST does not. Our driver components are extremely robust and are selected to withstand extreme time and temperatures.

6. Our Colors are Right

CAST LED’s have tight control over color temperature & rendering to match incandescent. Most so-called “warm white” LED’s have color temps that range between 2,800K and 3,000K – noticeably cooler than incandescents. All CAST LED’s are rated at 2,700K – indistinguishable from halogen lights. Another common color problem among cheap LED’s is maintenance. A phosphor layer coats the LED chip, this layer transforms the blue light coming from the LED into a mixture of colors that combine to make white light. This phosphor layer is heat sensitive and deteriorates in time. That’s why cheap LED’s may initially have a nice white light, then gradually become bluer. We do two things to prevent deterioration: 1. We only use the highest quality Cree and Nichia chips that have superior phosphor coatings, and 2. We effectively pull heat away from the chip so it never overheats.

7. We Will Never be Discarded

CAST has the only LED Fixtures that will last longer than the LED’s themselves. (I said that before, but it bears repeating!) Despite long warranty claims of other manufacturers, CAST is the only true lifetime product. Even if the LED modules are damaged due to lightning, they are replaceable. Our fixtures will never be found in a landfill.

View CAST Landscape Lighting LED Products


September 15, 2010

CAST Lighting Introduces Next-Generation LED Wall Light

“Finally, an Outdoor LED Lighting Fixture that Outlives the LED Itself”

CAST Lighting LED Engineered Wall Light (CEWL5LED1)

CAST Lighting LED Engineered Wall Light (CEWL5LED1)

The use of LED’s in Landscape Lighting has become more and more widespread. This trend picked up momentum as consumers learned of the long life and energy efficiency of these electronic light sources. With the growing demand, lighting manufacturers rushed LED lights to market, and hundreds of new LED fixtures and replacement lamps found their way into gardens and lawns across the land. Unknown to consumers, however, was that the great majority of these lights will fail long before their promised lives.

CAST Lighting’s LED Research and Development

Several years ago, CAST Lighting launched an intensive research and development effort to create integrated LED lighting fixtures that live up to the company’s high standards of durability, reliability, serviceability, and performance. It was a long process because the technology continued to improve over time; many of the early LED components were unsuitable because of their susceptability to heat and moisture damage. 

The release of CAST Lighting’s LED Engineered Wall Light (CEWL5LED1) constitutes a breakthrough in the industry. It is the first in a series of  outdoor luminaires that are designed specifically for the harsh environmental conditions present in the landscape.

Long Life – For Both LED and Fixture Body

The Nichia LED chips used in this new lighting fixture were specifically chosen for their durability, brightness, and lumen maintenance. To further enhance their long life, these chips were driven with only half their maximum current. Many manufacturers push the current to the maximum to achieve greater brightness at a lower cost. By reducing the current, far less heat is produced and full brightness is maintained over a longer period of time. The CAST Lighting Engineered Wall Light is estimated to maintain at least 70% of its brightness (L70) for 50,000 hrs. – that’s over 20 years.

While many lighting manufacturers also claim an LED life of 20 years, the consumer should ask the question, “Will the lighting fixture itself last as long as the LED light source?” CAST Lighting fixtures are uniquely constructed to make this claim. The body of the wall light is made of solid sand-cast bronze – a material that resists all types of corrosion. (Bronze statues have been known to survive for over 2,000 years with minimal corrosion.) The wire used in the fixture, and throughout all components of a CAST Lighting system, are tin-coated, marine-grade No-Ox - specially made to survive the most corrosive marine environments. Other manufacturers use copper, brass, aluminum and other materials – all subject to corrosion damage from soil and atmospheric salts and acids.

Other factors that can reduce the life of an LED fixture are voltage spikes and fluctuations. The CAST Wall Light is engineered to accept a wide range of voltages (8 to 20 volts) and has built-in voltage spike protection. 

Serviceability

Many LED manufacturers that integrate LED chips and drivers into the body of the fixture, permanently seal the fixture to prevent moisture intrusion. If an LED board fails in such a fixture, the entire fixture must be discarded and replaced. The CAST LED Wall Light eliminates this problem by using a propriatary conformal coating on the LED board to protect it from water. In the unlikely event that the LED fails (a lightning strike, for example), the glass cover can be removed and the LED board replaced. This is a simple, inexpensive repair that can be done by the installer in the field.

Performance

The CAST LED Wall Light is designed to deliver a warm white (2,700 degrees kelvin) diffuse light, with a very wide beam angle (100 degrees). This light also has a very high color rendering index (86) to closely match the illumination of incandescent light. It’s light output is about 90 lumens, somewhat brighter than the incandescent version of this fixture.

CAST Lighting plans to introduce LED versions of its other popular luminaires – each one designed and engineered to provide optimal illumination for the landscape.


September 28, 2009

New CAST Lighting Bronze Foundry in Full Operation

CAST Lighting foundry - pouring bronze into sand molds for landscape lighting fixtures

CAST Lighting foundry - pouring bronze into sand molds for landscape lighting fixtures

CAST Lighting, manufacturer of the world’s most rugged and durable landscape lighting products, announced today that their new bronze foundry is in full operation.

The foundry, located in Barranquilla, Columbia, is a state-of-the-art facility that combines high-tech induction furnaces and semi-automated assembly lines with workers trained in the fine art of bronze sand-casting
The opening of the new foundry coincides with the closing of CAST’s former foundry in Venezuela. With more than 4 times the capacity of the previous facility, this new foundry greatly expands production capacity.

David Beausoleil, President and Founder of CAST Lighting, remarked, “It was a significant challenge shifting operations over to the new foundry in the midst of the economic downturn. While many lighting manufacturers wear gearing down, we were gearing up, increasing our production capacity and decreasing our product time-to-market. The new foundry was essential for us to meet growing demands for our landscape lighting products.”

CAST Lighting’s commitment to manufacturing their own products differs from their competitors who largely outsource landscape lighting production to the Asian market. These companies often lose control of quality and face a price war among copycat Asian manufacturers.

Beausoleil explains, “From the start, we decided to manufacture our lighting fixturesout of solid sand-cast bronze, a metal nearly impervious to corrosion. This was no small task since the process of sand-casting is so dificult and labor-intensive. The materials are also very expensive. The only way we could make it work was to build and operate our own foundries, train our own workers and hire the best engineers to monitor the work. No one has duplicated our efforts and no other lighting manufacturer can offer such high quality at such a reasonable price.”