Posts Tagged ‘lamps’

L.A. Museum Hosting 4.5-Billion-Old Specimens Employs 21st Century LED Lighting Technology

January 7, 2011

After five years of restoration, modernization and seismic retrofitting, the historic Rotunda building of the Los Angeles County Natural History Museum in July 2010 reopened with a new face and a whole new set of lighting—decorative LED bulbs supplied by Torrance, California-based LEDtronics, Inc.

Renovation of the 97-year-old Beaux Arts-inspired building was part of a multi-phase, $107-million project that included the modernization of the electrical system to support multimedia presentations and events, improve climate control and enhance exhibition lighting in an energy-efficient manner. Modernizing of the lighting system involved a retrofit from incandescent light fixtures with custom-manufactured LED systems without compromising the historical integrity of the original fixtures, notably in the Rotunda.

LEDtronics provided 90 of 5-watt PAR38-180 Series bulbs and 160 of 1-watt DEC-G25F Series frosted bulbs through the distributor, American Electric Supply of Corona, California, to the contractor of record. The lamps were first installed in summer 2008.

Both types of bulbs offer a color temperature of 3000 Kelvin. Most of the PAR38-180 bulbs were of a narrow beam configuration, and were positioned in a crisscrossing beam fashion around the perimeter of the 57-foot-high Rotunda dome—the centerpiece of the museum building. The rest were medium beam, and were installed in recessed fixtures as down lights around the building’s upper walkway. Use of the 5-watt LED lamps represents a minimum savings of 4,000 watts when compared to the 50-to-60-watt incandescent PAR-style bulbs that might otherwise have been utilized.

The DEC-G25F-style frosted globe lamps were used as accent lighting all around the inside perimeter of the Rotunda. The complete installed set of 1-watt LED bulbs only consumes about 160 watts, compared to the 2,240 watts that would otherwise be consumed had the architect designed in a similar set of standard 14-watt G25 incandescent bulbs.

The LED bulbs were installed not only to reduce energy consumption and improve light quality but also to reduce maintenance costs. Incandescent bulbs would go out often and the poor accessibility made replacing them difficult. Based on the LED’s 50,000-hour operational lifetime and the museum’s weekly hours of operation, maintenance teams will need to replace the LEDtronics lights only about once every 15-plus years.

There is another advantage to the LED switch: The dramatic reduction in lamp-generated heat. This provides major benefits both in terms of much less air-conditioning required to keep the older bulbs cool, and also because keeping the temperature in the rotunda down is important since heat can cause the lead in the skylight to soften.

Originally dedicated when the Natural History Museum opened its doors in 1913, the Rotunda, crowned by the stained-glass skylight, is one of the museum’s most elegant and popular spaces. The colonnaded hall has often been used as a filming location, while the museum’s distinctive main building is on the National Register of Historic Places.

The museum is the largest in the western United States, and its collections include nearly 35 million specimens and artifacts and cover 4.5 billion years of history.

LED replacements for recessed T-bar fluorescent ceiling luminaires

February 4, 2010
LED replacements for recessed T-bar fluorescent ceiling luminaires

LED replacements for recessed T-bar fluorescent ceiling luminaires

Torrance, Calif., Feb. 1, 2010 — LEDtronics, Inc.®, has introduced  LED replacements for recessed T-bar fluorescent ceiling luminaires: CLL2X2-400-TPW-001W uses only 24W power and replaces 2ftx2ft standard fluorescent 64W units, while CLL2X2-800-TPW-001W consumes less than 36W and replaces 80W fluorescent fixtures. They operate on a voltage range of 100-277VAC, providing solid-state 5000K pure-white lighting that creates less heat compared to conventional lighting, reducing air conditioning demands in offices, closets, hallways, classrooms, work rooms, conference rooms and other retail or commercial indoor lighting locations.

The LEDtronics luminaires offer up to 300% longer lifespan compared to fluorescent lamps, using up to 50% less energy than standard fluorescent 2’x 2′ panels, without compromising on performance. The CLL2X2-400-TPW-001W provides a bright beam of 1,840 lumens, with an efficient power factor of 1.0, while the CLL2X2-800-TPW-001W offers 2,753 lumens and a power factor of 0.99. Both deliver a high Color Rendering Index of 75 that enhances all colors in the lighting environment.

The luminaires are easily installed using existing T-bar recessed 2ft×2ft module light fixtures, and are solidly constructed featuring a 22-gauge, cold-rolled steel housing with baked white-polyester finish; clear prismatic acrylic lens in a 20ga steel frame, with T-hinge and positive spring-loaded latch.

The housing and power supply are UL-rated, and the units are compliant with Restriction of Hazardous Substances Directive (RoHS), making them human- and environment-friendly, free of lead, mercury or other toxic metals. They also are free of harmful ultraviolet or infrared emissions as well as RFI/EMI/HD — problems related to fluorescents in hospital radiology areas, sensitive instruments, etc.

“The CLL2X2-TPW Series boasts an optical and solid-state LED design that creates a high-intensity, flicker-free, buzz-free and totally glare-free environment,” said Pervaiz Lodhie, LEDtronics president and CEO. “With their tremendous energy-saving potential, natural-looking light and elegant 2-sq.-ft form, they provide architects and lighting designers high efficiency and flexibility for suspended-ceiling applications traditionally addressed by linear fluorescents.”

The LEDtronics fixture units come with a three-year full warranty. Because LEDs have no breakable glass nor toxic gases, their solid-state design renders them impervious to shock, vibration, frequent switching and environmental extremes. With an average lifespan of more than 50,000 hours (5.7-plus years), these maintenance-free LED luminaires eliminate repeated relamping, and operate in ambient room temperatures of -22°F to +104°F [-30°C to +40°C], providing much better performance in cold freezer-type applications.

For additional information on how to incorporate the LEDtronics 24-inch-square recessed T-bar fluorescent ceiling luminaire replacements — CLL2X2-400-TPW-001W (replaces standard fluorescent 64W units, retails for $485.00) and CLL2X2-800-TPW-001W (replaces standard fluorescent 80W units, retails for $645.00) — into your facility lighting plans or architectural designs, contact LEDtronics toll free at 1-800-579-4875, telephone 310-534-1505, fax at 310-534-1424, email us at webmaster@ledtronics.com or postal mail at LEDtronics, Inc., 23105 Kashiwa Court, Torrance, CA 90505. Quantity discounts are available for qualified distributors. Availability is stock to 6 weeks.

LEDtronics LED Recessed Ceiling Luminaire Fixtures

LEDtronics LED Recessed Ceiling Luminaire Fixtures