What is an LED?

A light-emitting diode (LED) is a semi conductor device that emits visible light when an electric current passes through it. The light is not particularly bright, but in most LED's it is monochromatic, occurring at a single wavelength. The output from an LED can range from red (at a wavelength of approximately 700 nano meters) to blue-violet (about 400 nano meters). Some LED's emit infrared (IR) energy (830 nano meters or longer); such a device is known as an infrared-emitting diode (IRED).

An LED or IRED consists of two elements of processed material called P-type semiconductors and N-type semiconductors. These two elements are placed in direct contact, forming a region called the P-N junction. In this respect, the LED or IRED resembles most other diode types, but there are important differences. The LED or IRED has a transparent package, allowing visible or IR energy to pass through. Also, the LED or IRED has a large PN-junction area whose shape is tailored to the application.

Benefits of LED's and IREDs, compared with incandescent and fluorescent illuminating devices, include:

- ​Low power requirement. Most types can be operated with battery power supplies.

​- High efficiency. ​Most of the power supplied to an LED or IRED is converted into radiation in the desired form, with minimal heat production.

​- Long Life. When properly installed, an LED or IRED can function for decades.

Feel free to leave any question, comments or suggestions in the comment section below. For more articles on new trends, latest news, installation tips in LED space, check our blog for weekly posts as well as our Facebook, Twitter, Google Plus, or LinkedIn. As always we here at Oorjam LED Store Houston are willing to step up to the plate to answer your everyday lighting questions and challenges.

 

Oorjam Inc

7800 Harwin Dr, Houston, TX 

77036, USA

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Are Smart Lights More Efficient Than Regular LEDs?

Looking at the plain numbers, smart bulbs aren't quite as efficient as the best 'dumb' Eco LEDs you can get on the market, but they're close. Philips' non-Wi-Fi enabled bulbs use 7.5 watts (a measure of energy usage) to produce 600 lumens (a measure of brightness), while the Hue bulbs draw around 8.5 watts for the same brightness. While they're far better than a traditional 50 watt lightbulb, they're still a tiny bit more of a drain than a regular LED.
Let's also have a look at LIFX — their standard bulb runs quite a bit brighter at 1100 lumens, needing to draw 11 watts to produce that brightness. Other comparable LED bulbs need around 12-14 watts for the same brightness, so the LIFX may in fact be more efficient than other LEDs, but at $US60 a bulb, it's a steep price to pay.
The other advantage of smart bulbs is, of course, the ability to control them remotely. This means that you can turn them off as long as your phone is nearby, whether someone has left the lights on while no one is home, or you just forgot to turn something off at the other end of your house. Smart lights are also dimmable — so if you don't need their full brightness, you can turn them down to consume less power.
So while smart lighting isn't necessarily any more efficient than non-connected LED bulbs, if the other benefits of the system outweigh the initial cost of buying them, they can be a worthwhile investment.


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Martineztown neighborhood first to get new LED lighting

ALBUQUERQUE, N.M. (KRQE) – The historic Martineztown neighborhood is the first to get new LED lighting from the city.

Over the past year, the city and lighting company Citelum have worked together to engineer a custom “lighting master plan” for Albuquerque.

It includes converting more than 20,000 lights to LED bulbs. The city says it makes the city safer while saving millions of dollars in electric costs.

“It’s just a night and day difference on seeing pedestrians, being able to see cyclists, seeing other vehicles. Our police department is extremely excited,” Mayor Richard J. Berry said.

The mayor says the project will also reduce the city’s carbon footprint.


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Article source courtesy : Learn about the KRQE apps

LED vs CFL vs Incandescent

Both CFLs and LEDs use considerably less electricity than traditional bulbs. As you can see, buying longer-lasting, more efficient light bulbs can really pay off over time. Over a 23-year period, it will cost you over $200 (and many trips to the hardware store) to keep one 60-watt lamp lit with incandescent bulbs.

Energy Efficiency & Energy Costs	Light Emitting Diodes (LEDs)	Incandescent Light Bulbs	Compact Fluorescents (CFLs)
Life Span (average)	50,000 hours	1,200 hours	8,000 hours
Watts of electricity used (equivalent to 60 watt bulb). LEDs use less power (watts) per unit of light generated (lumens). LEDs help reduce greenhouse gas emissions from power plants and lower electric bills	6 - 8 watts	60 watts	13-15 watts
Kilo-watts of Electricity used (30 Incandescent Bulbs per year equivalent)	329 KWh/yr	3285 KWh/yr	767 KWh/yr.
Annual Operating Cost (30 Incandescent Bulbs per year equivalent)	$32.85/year	$328.59/year	$76.65/year

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How efficient are LED light bulbs?

Compare LEDs to compact fluorescent lights (CFLs) with 55-70 lumens per watt, and traditional incandescent bulbs with 13-18 lumens per watt, and the LED advantage is bright as day. LED manufacturers are not only increasing efficiency, they're expanding options.

How much money do you save with LED lights?

The LED bulb uses only 25 cents' worth. So the LED saves $1.23 per year. Since it costs $20, it will take 16 years to recoup the cost in electricity savings. At five hours a day, the incandescent uses $15.42 in electricity annually.

What is the equivalent wattage for LED bulbs?

(The point, after all, is that they draw less energy.) For example, an LED bulb with comparable brightness to a 60W incandescent is only 8 to 12 watts. But don't bother doing the math -- there isn't a uniform way to covert incandescent watts to LED watts. Instead, a different form of measurement should be used: lumens.

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Oorjam Inc
7800 Harwin Drive, STE A3,
Houston, TX 77036, USA