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LED lights don't last long?
2020-05-09



An LED lamp or LED light bulb is an electric light for use in light fixtures that produces light using one or more light-emitting diodes (LED lights). LED lamps have a lifespan many times longer than equivalent incandescent lamps, and are significantly more efficient than most fluorescent lamps, with some LED chips able to emit up to 303 lumen per watt (as claimed by Cree and some other LED manufacturers). The most efficient commercially available LED lamps have efficiencie of 130 lumen per watt (Lm/W). Antlux led shop lights have efficiencies of 110 lumen per watt (Lm/W) However, LED lamps require an electronic LED driver circuit when operated from mains power lines, and losses from this circuit means that the efficiency of the lamp is lower than the efficiency of the LED chips it uses.


Similar to incandescent lamps (and unlike most fluorescent lamps), LED lights come to full brightness immediately with no warm-up delay. Frequent switching on and off does not reduce life expectancy as with fluorescent lighting. Light output decreases gradually over the lifetime of the LED (see Efficiency droop section).


Some LED lamps are made to be a directly compatible drop-in replacement for incandescent or fluorescent lamps. LED lamp packaging may show the light output in lumen, the power consumption in watts, the color temperature in Kelvin or a colour description such as "warm white", "cool white" or "daylight", the operating temperature range, and sometimes the equivalent wattage of an incandescent lamp delivering the same output in lumen.

 

The directional emission characteristics of LED lights affect the design of lamps. While a single power LED may produce as much light output as an incandescent lamp using several times as much power, in most general lighting applications multiple LED lights are used. This can form a lamp with improved cost, light distribution, heat dissipation and possibly also color-rendering characteristics.


What's the difference between LED life ratings and those of traditional light sources?

LED life ratings have to be measured differently than legacy lighting sources, because the technology is just so much different than anything we've ever seen.

Look at lumen maintenance and L70, not just average rated life, when purchasing LED lights.


What is average rated life?

Average rated life is:

"An average rating, in hours, indicating when 50 percent of a large group of lamps has failed (operated at nominal lamp voltage and current). Manufacturers use three hours per start for fluorescent lamps and 10 hours per start for HID lamps when performing lamp life testing procedures. Every lamp type has a unique mortality curve that depicts its average rated life."


This is the de facto metric for measuring the life expectancy of traditional light sources. LED lights, however, follow a different method for measuring life expectancy called lumen maintenance.


What is lumen maintenance?

Lumen maintenance is an approach of measuring the light output (lumen) of a brand new light source and comparing that with its light output after a certain period of time. L70 and L50 are examples of lumen maintenance benchmarks for when 70 or 50 percent of a lamp or fixture's total light output remains.


What is L70?

"Rated lumen-maintenance life is measured in hours with associated percentage of light output, noted as Lp. In other words, L70 of 30,000 hours means that the tested LEDs produce 70% of the initial light output at 30,000 hours. If an LED has L50 of 30,000 hours, its lumen output decays faster than one with L70 of 30,000 hours."


Here's how an excerpt from the DOE's report explains the conundrum of dealing with LEDs that gradually lose light output:


"The end of life for all lighting technologies is signaled by the loss of light, but this may be less evident for LED luminaires, where the light output may continuously fade or the color may slowly shift to the point where low light output or an unacceptably large color change constitutes practical failure."


Are you also concerned about your LED lights failing spontaneously, prematurely, or catastrophically? There are options for extending the warranty on your lighting. Read more here.


Buying LED wraparound lights? How long can you expect them to last?

Let's rephrase that question. How long can you expect LED lights to last, and effectively function?


After you've hit the product's L70 mark, application comes into play. It's probably not a big deal for your lighting to be slightly dimmer, or slightly shift in color, if it's in a warehouse. But if you run an art museum or chain of retail stores, a noticeable loss in light output or the slightest shift in color is more than a little problematic.


In the latter scenario, be sure to budget for new lighting around the time your existing product is scheduled to hit its L70 mark.


AntLux's led light is perfect for any application where high quality LED lighting is required for your workplace. Our 8 foot LED strip Lights provide you more brighter, cheaper and healthier lighting than traditional lights. A step up from 8ft led light fixture is not only in light but in look. It is the perfect energy-saving replacement for both remodel and new construction applications in residential and commercial needs.


Antlux LED lights are notable for being extremely long-lasting products, but they cant last forever. The average lifespan of an LED is often rated up to 50,000 hours. This is about 50 times longer than a typical incandescent, 20-25 times longer than a typical halogen and 8-10 times longer than a typical CFL. If used 12 hours a day, an LED rated at 50,000 hours will last more than 11 years. Used 8 hours a day, it will last 17 years!

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