What is LED?

LED stands for «light emitting diode.» It’s an important part of many of the electronics devices you use at home or at the office. LEDs are small light bulbs which fit inside an electrical circuit. However, unlike regular incandescent bulbs, there is no filament in them to burn out. They also don’t get particularly hot. LEDs are illuminated as electrons move in a semiconductor material. They last a long time- they have about the life span of a standard transistor.

Two elements made of processed material comprise an LED. These elements are N-type and P-type semiconductors. These elements are positioned so that they contact one another directly, forming a «PN Junction.» The primary difference between other diodes and an LED is that the LED is meant to produce photons. It has a clear package which allows visible energy or light to go straight through it.

What Are LED Lights?

So just what is LED light? In two words, it is the future. It’s the future of both household and commercial lighting. More and more homeowners are giving up their traditional incandescent bulbs and turning to the energy-efficient LED bulbs. Indeed, entire cities and states are trying to benefit the environment by adopting the new lighting technology. The LED light uses diodes. A diode hosts electrons moving inside of semiconductor material, which thus generates light. The light created within these diodes is a cool light, as opposed to the heated light in an incandescent bulbs filament.

What Are LED Lights Made Of?

They are made of materials that save consumers money while protecting the environment against the destruction caused by other forms of artificial lights. LED lights do not contain any environmental or health related toxic materials. There are no hazardous metals used in the manufacturing process and they do not contain lethal gasses. LED lights are made of a series of electronic pieces that emit photons (light waves) when energy is introduced to them. They are safe for humans and the environment alike, and are the most energy efficient source of artificial light available.

What is an LED Light Bulb?


  • Insulator
  • Contact Plate
  • Plastic Sleeve
  • Aluminum Board
  • Electronic Ballast


  • Bulb material
  • Heat Sink


  • 6 x Golden Dragon
  • Plus


What is SKY LED?

There is more than one kind of LED. There is the white light and there are the red, green, blue ones (or RGB). SKYLED has introduced a whole new world of possibilities for LED lights. Now, for instance, an LED computer monitor is capable of producing a huge range of colors- almost everything in the color spectrum. That’s because the RGB LEDs can be lit or dimmed in such a way as to combine the effects of the three primary colors to form thousands of other colors.

RGB LED lights have begun to be used for far more things than just monitors, however. One useful application is that of LED light strips. RGB LED light strips are low voltage lighting devices, usually coming in five, twelve and 24 volt versions. They’re used in such things as concealed lighting, architectural lighting, sign letter lighting, perimeter lighting, and other similar functions. In essence, they serve as replacements for older technologies such as fluorescent, incandescent, neon and halogen lights. They’re also about twice as bright as similar decorative-light options, like rope lighting.

Another new trend in RGB LED lights is that of providing accent lighting. Originally, these LED accent lights were a way of enhancing exteriors and interiors of hotels, corporate buildings and high-class restaurants.

RGB LED lights come in red, blue, yellow and green mono strips and they come in different color “temperatures,” from warm looks to cold. Certainly the variety of looks is much higher than what has been possible with conventional halogen and traditional lamps.

What Do LED Lights Look Like?

LED lights come in a wide variety of colors, shapes and sizes and they are used in a great number of applications. It is very hard to sum up what LED lights look like, because often they look just like any other source of artificial light! LED lights are commonly found in digital displays of many electronic devices, and they can be seen in lamps on the night stand, in fixtures on the ceiling, and they can even be seen lighting up the night skies in streetlights and landscaping lamps.

They do anything any other source of artificial light can do, and so much more!

Energy Efficient, Cost Effective, Eco-Friendly LED Technology

The most significant thing that LED lights do is to provide the most energy efficient source of artificial light known to man. They utilize anywhere from 30% to 80% less energy than any other source of light and are infinitely safer on the environment. LED lights do not contain any dangerous metals or gasses, last an incredibly long period of time and are durable with their solid state construction. Because they are so cost effective to operate, they are used in everything from Christmas lights to traffic lights, and that is just the beginning of what these amazing lights can do.

LED Lights for Christmas

LED lights have become available for outdoor lights as well as indoor Christmas lights. The biggest advantage to using outdoor LED lights is that they are weatherproof and will not be damaged by rain. Because they are so durable and long lived, it is rare to ever need a replacement bulb.

LED Lights for Swimming Pools and Spas

Many swimming pool and spa owners are switching to highly advanced LED lighting systems that offer not just one light to illuminate the spa or pool, but multiple colors of light that cycle, creating a gorgeous wave of colorful effects that are beautiful at night. Prior to LED lights, doing something like this would expend a lot of extra energy. Thanks to the modern technological advances in LED lighting and energy conservation, this elegant look is now cost effective and more widely available.

LED for Traffic Lights

Each year, billions of tax dollars are spent on the cost of keeping traffic lights lit all year round, and that does not even include maintenance. A conservative estimate is that there are more than 50 million traffic lights in the United States alone. If each traffic light cost only $100 annually for electricity, that would equal $5 billion dollars of hard-earned tax payer dollars just for traffic lights alone. Cut that cost down to 20% by using LED lights and taxpayers are now looking at $1 billion dollars. That extra $4 billion could come in handy for health care and education.

Do LED Lights Attract Bugs

LED lights do not attract bugs because insects, in general, are attracted to ultra violet light, as this is the only light in the spectrum their vision can detect. LED lamps give off little heat, and also emit the wrong colors of the visible light spectrum. As a result, the number of bugs that are attracted will be minimal. Also, because LED lights do come in an assortment of colors, try to steer clear of bright whites or blue whites. Soft white and yellows still appear to be the least attractive to bugs, no matter what type of lighting is involved. LED lights use far less energy in order to function. For this reason, a person who uses LED light bulbs exclusively so as not to attract bugs, can save a sizeable amount on their power bills.

Do LED Lights Cause Cancer

LED Lights have not been found, in any studies, to cause cancer. The main cause of cancer in any light source seems to come from exposure to UV radiation and hazardous chemicals that may be found in incandescent and fluorescent light bulbs. LED lights neither contain mercury nor do they emit ultra violet rays, making them a less likely candidate to cause illness, when compared to the light sources that do contain cancer causing attributes. Because they utilize such a small amount of power to operate, they have an extremely small carbon footprint. Less damage is done to the ozone, which in turn helps to protect against an overabundance of naturally occurring UV radiation from the sun. So in effect, when seeking to determine, «Do LED lights cause cancer?» the best answer is, they probably even help to guard against it!

Do LED Lights Emit UV

LED lights do not emit any UV (Ultra Violet) rays. Unlike other light bulbs that do give off small amounts of UV radiation due to the particular technology inherent in them, LED light technology does not produce UV radiation. LED’s (Light Emitting Diodes) do not generate UV radiation because they are lit through a process which involves electrical current flowing to semiconductors. Unlike incandescent and CFL bulbs, LED bulbs do not require a filament or gasses which use heat as the source of light. While there is a slight amount of heat that is generated, it is not in the infrared or ultraviolet portions of the light spectrum.

Do LED Lights Give Off Heat

LED lights do produce a very small amount of heat, but not as we have come to expect it with traditional methods of lighting. Yes, they are cool to the touch and can be easily handled even after being on for long periods of time, but there is a small release of heat during the process of producing light. A basic explanation for giving off heat would be that electricity is introduced to the unit as ‘high energy.’ It then passes through from one material to another, but because of the variation in the two materials, it must release all that high energy, and transition to low energy, prior to being absorbed by the second. It is in the process of dispelling energy that two things happen. First, a very small amount of heat is given off, and secondly, the energy is released from electrons in the form of photons (light particles). Do LED lights give off heat? Yes, it’s part of the process of releasing photons, but no, not enough to cause a burn.

Do LED Lights Really Work

Recent advances in LED technology have made it possible to effectively use LED lights for a number of different purpose. LED lights are now powerful enough to use as a lighting source for a home, whereas before they were only seen in things like the digital displays on a microwave or remote controls, as well as the panel lights in vehicles.

LED Lighting in the Home

The typical three bedroom, two bath home, has anywhere from 12 to 24 light bulb sockets. If each of them is occupied by an incandescent bulb, it is estimated that between 25% and 50% of the total electric bill is spent as a direct result of lighting the house. In contrast, LED bulbs, if used in place of all of these bulbs would use about 80% less energy. This is a vast difference, and would surely allow a homeowner to realize a significant reduction in his/her electric bill each month. In addition, there is very little difference in the quality of lighting that is received from LED bulbs. So when asked, «Do LED lights really work in a home?» the answer is, without a doubt, «Yes!»

LED Lights in the Office

For many years offices have employed the use of long, tubular fluorescent bulbs. Not only can these bulbs begin to go bad and flicker constantly, which is extremely annoying, but they also contain momentous amounts of mercury which is well known to be a health hazard. In recent years, many scientists have recommended the use of LED lights in replacement of outdated fluorescent lights, for more than one reason. Do LED lights really work to reduce those risks? Yes, LED lights are not only safer to use and dispose of, but they also cut the expense an office incurs in energy usage bills every month.

Do LED Lights Work with a Dimmer

LED lights are famous for the fact that there is no warm up time. They immediately light up when the switch is turned on. The point is, LED lights are either on or off, and traditional dimmers have rapid cycling to reduce the voltage input which makes incandescent lights dim. By reducing voltage to an incandescent bulb, it automatically dims, but LED’s on the other hand, already convert high voltage to low voltage, so reducing the input would have no effect on the light whatsoever.

Most LED bulbs will not dim with a dimmer because of the technology described above. Cree, however, has manufactured a 9 Watts, solid state LED bulb in an Edison base that can replace any incandescent or halogen bulb in a socket connected to a dimmer switch. This is a revolutionary new product that was designed specifically to be used with dimmers. While a conventional LED will not work with external, third party dimmers, Cree’s 9 Watt, 360 lumen bulb will, indeed, dim when voltage is cut back. Because of the standard E27 screw-in base, this amazing bulb can be used in any lamp or light fixture in the home. The best part is that, like all other LED lights, Cree’s true dimmable LED bulb uses to 80% less electricity to power.

Do LED Lights Contain Mercury

LED lights do not contain even the slightest trace of mercury, which makes them the safest alternative when it comes to lighting an office or home. Other forms of light bulbs, such as the currently trendy CFL bulbs, contain mercury as well as a number of other toxic chemicals that emit vapors into the environment, making them very dangerous for personal or commercial use.

Dangers of Mercury Content in CFL Bulbs

CFL bulbs (Compact Fluorescent Bulbs) contain significant levels of mercury which is a neurotoxin that is very dangerous to human beings. It is even more dangerous to children and pregnant women as it poses a relatively high risk of birth defects should exposure occur. Most people are clueless to this hazard, and that is one of things that make it the most dangerous. If people do not know that they have light bulbs full of potentially damaging chemicals, they aren’t going to be cautious about disposing of them. In many cases there are warnings placed on the box, but sometimes labels can be disregarded.

Do LED Lights Save Money

LED light bulbs are not only safer to use, but they create less heat and will save even more on an electricity bill than any other light bulb on the market. Do LED lights save money? They save more than that! They save both you, and the environment, from exposure to toxic substances in other types of bulbs.

People who use standard, non-LED flashlights, or other battery operated light sources, are already aware of how much it costs to buy batteries. Not only are the batteries expensive, but they must replaced quite often in most cases. This is especially true if the flashlight is used on a regular basis. Since LED lights in general draw about 1/3 of the energy that other light bulbs draw, they will not drain the batteries as quickly as the other light bulbs will. For this reason, LED flashlights have become extremely popular.

ED light bulbs are made with material that is almost indestructible, short of being stomped on, or run over by a truck. That is to say that normal wear and tear, and even accidental drops, will more than likely leave an LED bulb unscathed and fully operational. This is a definite plus, and certainly a great way to save money on replacement bulbs in the event of an accident. The older light bulbs that are made with glass casings and even the newer CFL bulbs will surely shatter when they hit the ground.

Do LED Lights Get Hot

Many fires have been associated with some sort of debris or paper being within an unsafe proximity to a hot light bulb. Lamps that are kept on a bedside table have an even greater risk of causing a fire, if an extremely hot incandescent light bulb should come in contact with a piece of clothing, paper or any other flammable material or liquid. With LED light bulbs this hazard does not exist. In fact some of these light bulbs are even encased in plastic housings. This could never be done with other light bulbs, as the casing would melt. By remaining cool LED lights do not generate even the slightest temperature rise that other light bulbs do. For this reason LED lights are more efficient is conserving electricity. Another aspect of LED lights that conserves energy is their ability to illuminate a room using about a third of the electricity that other light bulbs use. Heat is one of the main factors that cause incandescent bulbs to blow. LED lights have a life span of 100,000 hours, and could possibly stay on constantly for the entire duration of their lives! Since heat is not an issue with LED lights, there will never be the occasion for one to blow as a result of overheating.

Do LED Lights Flicker

Technically, LED lights do flicker but it is usually at such a fast pace that it cannot be detected. Unlike certain forms of fluorescent lighting that must «heat up» before reaching their full lighting capacity, LED lights turn on through an electrical current that flows to semi-conductors. The effect is instantaneous light without the need to warm up, or flicker, when turned on. There are, however, LED lights that are made specifically to add flickering effects for aesthetic reasons, such as in holiday lights. So, they do flicker, but at a rate that is so fast, the human eye is unable to detect it.

How Long Do LED Lights Last?

Some LED lights are rated as having a life span of 100,000 hours while others are rated at 50,000 hours. It depends largely on the product and manufacturer. With this said, LED lights in general, last a lot longer than any of the other lighting sources that are available on the market today.

How Long Do LED Lights Last in Flashlights?

LED flashlight will last many times longer than a flashlight that is lit with incandescent bulbs. The life expectancy of the bulb in an LED flashlight ranges from 50,000 to 100,000 hours. Also, because LED lights are energy efficient, consumers will find that each fully charged set of batteries will last more than twice as long as when powering flashlights with incandescent bulbs.

How Long Do LED Lights Last in Traffic Lights?

Not only do LED’s, when used for traffic lights, provide a much brighter colored light, but they also save the city a lot of money in regard to regular maintenance on the lights. Standard incandescent bulbs in traffic lights can blow as often as five times per year. When a person considers the money a city will have to pay in extra labor to have these repairs done, along with the cost of the replacement bulb, it can be quite a significant amount when multiplied by the approximate all the traffic lights in the US! LED lights will last for approximately a decade, and during that time will only need to have the outer lenses cleaned every so often.

How Much Energy Do LED Lights Use?

LED lights consume about 80% less energy than incandescent light bulbs. There are other energy conserving lighting sources available on the market as well; however, they are nowhere near as efficient as LED lights, and they have also proven to be a danger to the environment.

LED lights do not produce heat so they will never create a need to run the air conditioner for climate control indoors. They certainly don’t require extra energy to cool down the interior of a building! While it is possible to save enough energy to have a reduction by as great as 50%, that would mean a total conversion to LED lights throughout the home, which would in turn require less air conditioning. The best answer, then, would be that LED lights use approximately 80% less energy than incandescent bulbs, which translates to an electric bill that is half of what it normally runs.

How Much Do LED Lights Cost?

The cost of LED lights depends on what product the LED light is being used for, and whether it is for personal or professional usage. For example, LED lights for applications such as traffic lights will obviously cost a lot more than a simple LED flashlight.

Cost of LED Christmas Lights

A standard string of bright white C6 LED Christmas lights can range from $15.00 to $25.00 dollars each, depending on where they are purchased. In many cases, these lights are sold at discount rates from different online stores, and often can be found at even lower prices.

How Much Do LED Flashlights Cost?

LED Flashlights, depending on the lumens and casing can run from $10.00 being the lower end of the price spectrum to a whopping $180.00 for the newer more advanced models that offer up to 600 lumens of light. Mini and travel flashlights can be found even cheaper for approximately $7.00 to $15.00.

Variables in the Cost of LED Light Bulbs

Depending on the amount of luminosity a person is looking for, each LED light bulb can be purchased for prices that range from $5.50 to $35.00 dollars a bulb.

How Much Do LED Lights for Cars Cost?

LED Tail lights don’t seem to vary much in price based on which car they are made for. Normally parts that are purchased for cars are based on the car itself. In this case, the lights for everything from a Ford to a Mercedes cost about $230.00 to $300.00. LED Headlights run approximately the same, at about $200.00 to $320.00.

LED Neon Tubes for Under the Car

Neon tubes that are often seen on the undercarriage of sporty cars can cost anywhere from $42.00 all the way up to $200.00. Often these LED neon tubes are sold at discount prices, and a little shopping around can make all the difference in finding the right LED neon tubes to fit a person’s budget.

How Much Do LED Lights Cost for Growing Plants?

When it comes to grow lights, there is quite a variety of specifications that a grower may look for. For this reason it is hard to assess exactly what the cost may be; however, grow lights are sold for as little as $45.00 all the way up to $175.00 just for the lamp, and more for the more extensive LED grow lighting systems.

How Do LED lights Work?

Unlike standard light bulbs do not have a filament. Rather, they work by an electrical current that flows to a semi-conducting device; the result of this electrical current is light. The way this process works is that electricity causes electrons in the diode to rapidly move, then, as they are passed from one material to the other, they release heat and photons, or light rays. The direct result of this change in the way light is created is a rather significant decrease in the amount of energy that is spent on lighting LED bulbs since heat is not integral to the process.

LED Lights save energy because they do not require as much power to function. They also remain cool so there is no extra heat produced in the process of lighting them. In addition, LED light bulbs last a lot longer than other bulbs, in fact, up to 100,000 hours of continuous use, which is about 10 years. This decreases the amount of light bulbs that end up in land fills, making them a very good choice in terms of the environment and waste reduction. LED lights use about 80% less electricity, or battery power in battery operated devices, than any other form of artificial light.

LED lights have become quite popular today, and there are a number of reasons that people everywhere are deciding to choose them over other, more traditional light bulbs.

LED Lights and Color Quality

LED lights provide a color that is crisp and bright like no other form of artificial light has been able to accomplish.

LED Lights and Energy Efficiency

Because LED lights do not draw energy in the same way that incandescent lights do, they cost about 80% less to operate. LED lights are even more energy efficient than CFL bulbs which contain toxic mercury. This means that by switching all of the light bulbs in a home over to LED lights, a person will realize a sizable decrease on the cost of lighting his/her home. In some cases, people have reported as much a 50% reduced electric bill as a result of using LED lights instead of other lighting sources.

LED Lights and Heat

LED lights better in terms of climate control because they generate such a minute amount of heat that these light remain cool to the touch. During the process of producing light, electricity is taken in and passed from high energy electrons to a low energy receptor. In the process of converting this high to low energy two things transpire. Heat is produced, but immediately dispelled, and photons (light rays) are give off. Because the heat is dissipated, the lights remain ‘cool.’

LED Lights a Life Expectancy

Most light bulbs have a life expectancy that is rated at approximately 2000 hours of usage. In many cases those light bulbs will fail well before those 2000 hours have passed. This is mostly due to the fact that the filaments cannot withstand electric fluctuations, such as those which occur when the light switch is flipped. LED lights do not need time to cycle or warm up, they light instantly, for this reason, and the fact that they do not get hot, they are rated at about 100,000. LED lights are also much more durable than other light bulbs and are nowhere near as breakable.

LED Lights and Electric Consumption

The best source of artificial light in terms of energy conservation is the LED light. Not only does the LED light have a gorgeous bright white look to it when used to replace home lights, but it also uses practically 80% less electricity, which is a huge improvement, to say the least. In most households the cost of lighting alone takes up a portion of about 35 to 50% of the electric bill. There are many things consumers can do; however, using LED lights in place of energy hogging bulbs is a sure way to take a step in the right direction in terms of bringing a high electric bill down.

Pesky Insects

LED lights do not produce heat and also use a different frequency of wavelength. By replacing the light bulb on the front porch, a significant decrease in insects, especially mosquitoes, can be realized. Everyone who has gone camping already knows that insects will sometimes gather around their lamps, often in large numbers. By bringing along an LED lamp, the insects would at least be minimized.

Why choose LED lights?

Because they are cost effective in terms of energy, are durable and long lasting, and they are safer for the environment just to name a few reasons. There are many more reasons to choose LED lights but the best way to find out first hand is for a person to try them out and make his/her own decision. Perhaps just changing one light bulb at a time will be a good way to assess whether or not LED light is preferred.

Why Are LED Lights More Efficient

Following are some of the main reasons that LED lights are more efficient to use.

Less Use of Resources

Why are LED lights more efficient in terms of resources? Because LED lights only use 2-10 watts of electricity to operate, the end result is that they use around 80% less electricity than incandescent bulbs. In fact, recent studies conducted on LED lights in comparison to CFL bulbs, which are also considered energy conserving bulbs, showed that LED lights used even less electricity than they did.

Less Likely to Break

Most of the light bulbs on the market are made with fragile filaments and encased in glass bulbs. Even compact fluorescent light bulbs (CFL bulbs) are only available in glass casings. The reason for this is the heat they produce, which would melt just about any other transparent material that might be considered. With LED light bulbs, there is no chance of heat melting anything as the bulbs do not get hot. As a result, most of them are encased in a form of unbreakable plastic that if dropped, is shatter proof. Why are LED lights more efficient? Because they don’t break as easily, and therefore do not need replacements as often, if at all!

Won’t Burn Out or Blow

Unlike other bulbs that do become hot, or have a heat up time in order to operate, LED lights withstand elements such as electrical surges much better. Because of this, LED lights have the longest lifespan of any light bulb that can be purchased at this point in time. This means less bulb replacements and in turn, more money saved. LED lights are rated as lasting about 100,000 hours, or ten years. In some cases there have even been reports of LED light bulbs lasting for longer than 10 to 15 years! That is a very impressive lifespan for a light bulb.

No Extra Heat Produced

People are amazed when they realize how much extra money can be saved on the cost of cooling their homes, when light bulbs are in use that won’t produce extra heat. It doesn’t seem like something as insignificant as a light bulb can make much of a difference in terms of room temperature, but the fact is, it can. This is especially true in warmer climates which already work air conditioning systems overtime in order to keep the temperature consistent. Adding a house full of heat producing light bulbs will only make matters worse. Why are LED light more efficient in terms of climate control? Since LED light bulbs do not get hot, there is no element of extra heat involved with using them. This will enable people to save even more money on their energy bills.

Why Are LED Lights So Expensive

The truth is, they do cost more, but there are many reasons for this. One of the things people need to keep in mind is that LED lights are so much more efficient than standard light bulbs that they will surely earn their keep in a very short period of time. That is, the money spent on obtaining them will be made up for quite quickly in the form lower electricity bills, and the less frequent need to replace them.

Anytime a technology is in its early phases, the cost of that product will almost always be a bit higher. Take the microwave oven, for example. Some of the very first models cost over $3000.00 and now they can be purchased for as little as $49.00, and lower in some cases. This is because LED technology, while already excellent, is still in its infancy. As a result, the materials and man power hours that go into development are much more expensive. By the time the product reaches the store, it will almost always result in a higher price tag. As consumer demand is creating a need for more and more LED products, manufacturers are better able to mass produce these items, and this drives prices down. LED lights may be expensive and even fancy, but they are definitely a better buy! LED lights use approximately 80% less electricity or battery power to function. This is a huge savings! In fact, this type of savings would more than likely make it seem as if the LED lights had paid for themselves within a matter of a few months. And the bulbs themselves will last as many as 50 times longer than an incandescent bulb. If you are tired of changing bulbs two or three times a year, try changing LED bulbs every decade or two! The initial investment is really nothing when compared to how much money having LED lights will save.

Why Do LED Lights Look Blue

Today LED lights are blue for one of two reasons. The first and most obvious reason is because the manufacturer developed the light to be blue. However, there are times when inferior quality LED’s are manufactured that were intended to be bright white, but the result was much the same as early attempts. In other words, the second answer to the question, «Why do LED lights look blue?» is that it is merely accidental.

Type of Diode

One of the factors that determines the color of the light that is emitted by LED lights is the diode or diodes from which the light is manufactured. Each diode can only emit one color of the light spectrum, so in order to get any color other than the primary colors of the spectrum, more than one diode is lit at the same time. Diodes that produce blue light usually have a clear coating.


Each color of the rainbow has a very specific wavelength that determines the exact color, or shades of a color. Why do LED lights look blue? That’s because the energy that is emitted falls within the wavelength that determines the color blue. That wavelength is 450 and 500 nanometers.


A certain amount of voltage is applied to the diode, and that voltage is also a contributing factor to the color that will be resultant. For instance, the diode that produces the color blue needs a wavelength of 450 to 500 nm. In order to produce that wavelength, a voltage of 2.48 and 3.7 volts must be applied to the blue diode.