5. Searching the web, you will quickly find that the LED light bulb market is inundated with product. Many of these bulbs are relatively inexpensive (less than $20); however, you may find that many of these LED bulbs consist of questionable materials and dubious craftsmanship. Good LED light bulbs cost more than these cheap ones because they use high-quality chips with prices firmly set by reputable manufacturers on Trade Show Lighting like Cree. This means that though these LED light bulbs are more expensive, they are far superior.
6. Dimming an LED light bulb is tricky. LEDs require constant current to operate. Because of this, if a standard dimming method is applied, it will flicker at regular intervals, or worse, simply not work. In order to dim an LED light, a 0-10V dimming module is required in order to “trick” the LED into emitting less light. In theory, all LED lights are dimmable with this module.
7. When comparing LED light bulbs, you need to understand lumens.The Lighting Show said the lumen is a standard unit you can use to compare LED light bulbs to standard bulbs, such as incandescents and halogens. Roughly, a lumen is a measure of brightness. Lumen quantity is important, but maybe more important is lumen quality, i.e., luminous efficacy (lumen/Watt). Today's quality LEDs have a luminous efficacy between 60-70 lumens/watt.
8. Color temperature and beam spread are the other key tools for comparing LED lights. Both color temperature and beam spread are measured in degrees. Color temperature refers to the color of the light emitted. In general, 3000 Kelvin is warm white (closer to infrared light) and 5000 Kelvin is cool white (closer to ultraviolet light). Cool white is brighter because it is the natural color of LED light from LED Lighting Show, whereas chips that emit a warm white light require a phosphorous “filter” to “warm” the color temperature, thus reducing the chip's brightness. Beam spread is the angle of the light that is being emitted. The lower the number, the more like a “spot” the light is.
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1. While the initial cost per bulb is still high, the total lifetime cost of an LED light bulb is actually much lower than that of equivalent incandescent and CFL bulbs. Taking into consideration energy costs as well as time and resources required to replace shorter-lived incandescent and CFL bulbs, an LED bulb that lasts 80,000 hours has a much lower lifetime cost.
2. LEDs are diverse, and many types are useless for general lighting applications from Trade Show Lighting. The finest LED chips emit light with a Color Rendering Index of 85%. LED light bulbs that use top-quality LEDs will last much longer than the novelty bulbs that many are selling and 60% longer than many competing bulbs that use inferior LEDs.
3. LEDs do generate heat, and this heat is the biggest problem that manufacturers face developing LED lighting applications. Manufacturers can now produce individual LED chips that are as bright as a 100-watt incandescent bulb, but these LEDs are practically useless for general lighting because installing them in a fixture creates ventilation problems that have not yet been solved. LEDs installed in fixtures and bulbs must be ventilated properly, and the better the chip, the more difficult it is to properly cool. There are many LED light bulbs on the The Lighting Show that do not take this into consideration and either use cheap chips so they don't have to ventilate them, or do not ventilate their chips properly, significantly reducing its lifespan. While the typical LED light bulb is barely warm to the touch, if the chip is not properly ventilated, it can fail prematurely.
4. The life-span of an LED light bulb should be its “half-life.” LED light bulbs do not burn out; rather, they gradually fade out. When a vendor from LED Lighting Show says an LED bulb will last 80,000 hours, they mean that at that point, the chips will have reached 50% efficiency, and the bulb ought to be replaced. So, the bulb might last 100,000 hours or more, but its efficiency will have degraded greatly by that point. Using this 100,000-hour life as a selling point is therefore misleading. While LEDs don't last forever, they will last 50-75 times longer than a comparable incandescent and 6-8 times longer than a CFL.
2. LEDs are diverse, and many types are useless for general lighting applications from Trade Show Lighting. The finest LED chips emit light with a Color Rendering Index of 85%. LED light bulbs that use top-quality LEDs will last much longer than the novelty bulbs that many are selling and 60% longer than many competing bulbs that use inferior LEDs.
3. LEDs do generate heat, and this heat is the biggest problem that manufacturers face developing LED lighting applications. Manufacturers can now produce individual LED chips that are as bright as a 100-watt incandescent bulb, but these LEDs are practically useless for general lighting because installing them in a fixture creates ventilation problems that have not yet been solved. LEDs installed in fixtures and bulbs must be ventilated properly, and the better the chip, the more difficult it is to properly cool. There are many LED light bulbs on the The Lighting Show that do not take this into consideration and either use cheap chips so they don't have to ventilate them, or do not ventilate their chips properly, significantly reducing its lifespan. While the typical LED light bulb is barely warm to the touch, if the chip is not properly ventilated, it can fail prematurely.
4. The life-span of an LED light bulb should be its “half-life.” LED light bulbs do not burn out; rather, they gradually fade out. When a vendor from LED Lighting Show says an LED bulb will last 80,000 hours, they mean that at that point, the chips will have reached 50% efficiency, and the bulb ought to be replaced. So, the bulb might last 100,000 hours or more, but its efficiency will have degraded greatly by that point. Using this 100,000-hour life as a selling point is therefore misleading. While LEDs don't last forever, they will last 50-75 times longer than a comparable incandescent and 6-8 times longer than a CFL.
Currently the LED lamp is popular due to it's efficiency and many of LED Lighting Show believe it is a 'new' technology. The LED as we know it has been around for over 50 years. The recent development of white LEDs is what has brought it into the public eye as a replacement for other white light sources.
Common uses: indication lights on devices, small and large lamps, traffic lights, large video screens, signs, street lighting(although this is still not widespread by Trade Show Lighting).
Advantages:
-Energy efficient source of light for short distances and small areas. The typical LED requires only 30-60 milliwatts to operate
-Durable and shockproof unlike glass bulb lamp types
-Directional nature is useful for some applications like reducing stray light pollution on streetlights
Disadvantages:
-May be unreliable in outside applications with great variations in summer/winter temperatures, more work is being done now to solve this problem according to The Lighting Show.
-Semiconductors are sensitive to being damaged by heat, so large heat sinks must be employed to keep powerful arrays cool, sometimes a fan is required. This adds to cost and a fan greatly reduces the energy efficient advantage of LEDs, it is also prone to failure which leads to unit failure
-Circuit board solder and thin copper connections crack when flexed and cause sections of arrays to go out
-Rare earth metals used in LEDs are subject to price control monopolies by certain nations
-Reduced lumen output over time.
Common uses: indication lights on devices, small and large lamps, traffic lights, large video screens, signs, street lighting(although this is still not widespread by Trade Show Lighting).
Advantages:
-Energy efficient source of light for short distances and small areas. The typical LED requires only 30-60 milliwatts to operate
-Durable and shockproof unlike glass bulb lamp types
-Directional nature is useful for some applications like reducing stray light pollution on streetlights
Disadvantages:
-May be unreliable in outside applications with great variations in summer/winter temperatures, more work is being done now to solve this problem according to The Lighting Show.
-Semiconductors are sensitive to being damaged by heat, so large heat sinks must be employed to keep powerful arrays cool, sometimes a fan is required. This adds to cost and a fan greatly reduces the energy efficient advantage of LEDs, it is also prone to failure which leads to unit failure
-Circuit board solder and thin copper connections crack when flexed and cause sections of arrays to go out
-Rare earth metals used in LEDs are subject to price control monopolies by certain nations
-Reduced lumen output over time.
Technology Introduction :
The products of this sort is the lower reaches of LED industry. They are including the package, the test and experience, the designing and all the applications.
The LED package means to connect the outer wire to the poles of LED chip and form it as a LED device, and then pack them with silicone & other materials in order to protect the chip and enhance its lighting efficiency.
The processing sequence of LED packaging by the manufacturers of LED Lighting Show is Crystalline grain, Die bond, Die attached, Wire bonding, Silicone curing, Tin plating, Shear pins, Distribute bins and Testing.
The parts and components of high power LED lighting products from The Lighting Show should be proceeded two optic design before they are finished products.
The firs of stage is to make the LED IC chips into the LED light sources. It have to achieve the first optic design in order to settle on the angle of lighting, the strength of illumination, the volume of luminous flux, the range and distribution of color temperature.
This is called the Optimized Design of the Primary Optical System for LED Packages according to Trade Show Lighting.
The optimized design of the second optical system is only for high power LED lighting products.
This kind of products will get lens with the covers and their lighting angles are different, from 30˚ to 180˚. The second optical design will change the optic characters by the lens for the LED light Source. Simply speaking, the first optical design is to catch more light from the LED chips, and the second optical design is to make the LED devices illuminate as the demand of design.
The products of this sort is the lower reaches of LED industry. They are including the package, the test and experience, the designing and all the applications.
The LED package means to connect the outer wire to the poles of LED chip and form it as a LED device, and then pack them with silicone & other materials in order to protect the chip and enhance its lighting efficiency.
The processing sequence of LED packaging by the manufacturers of LED Lighting Show is Crystalline grain, Die bond, Die attached, Wire bonding, Silicone curing, Tin plating, Shear pins, Distribute bins and Testing.
The parts and components of high power LED lighting products from The Lighting Show should be proceeded two optic design before they are finished products.
The firs of stage is to make the LED IC chips into the LED light sources. It have to achieve the first optic design in order to settle on the angle of lighting, the strength of illumination, the volume of luminous flux, the range and distribution of color temperature.
This is called the Optimized Design of the Primary Optical System for LED Packages according to Trade Show Lighting.
The optimized design of the second optical system is only for high power LED lighting products.
This kind of products will get lens with the covers and their lighting angles are different, from 30˚ to 180˚. The second optical design will change the optic characters by the lens for the LED light Source. Simply speaking, the first optical design is to catch more light from the LED chips, and the second optical design is to make the LED devices illuminate as the demand of design.
Although LED spotlight and floodlight are commonly used by professional landscapers from The Lighting Show, the two lighting types create considerably different illumination patterns. Let's check out to see the difference.
Beam Width
LED spotlights mainly stress on the 'spot' whose function is focusing light. That is to say they output a narrower beam of light, typically less than 45 degrees wide. Most of the light from a spotlight is concentrated onto a relatively small area producing a bright spot. LED floodlights while has a stress on 'flood' whose word meaning is diffusing the light. So the floodlight output a wider beam of light, up to 120 degrees, so the light from a floodlight is spread out over a much larger area.
Application
LED spotlights can offer a variety of lighting effects such as gradual transition, color blinking, random blinking, alternating gradient and other dynamic lighting effects. Other effects can be also achieved through DMX control according to LED Lighting Show. As the spotlight light is more concentrated, it appears brighter than a floodlight but only within its narrower beam, so a spotlight is more suited to illuminating objects such as a large building, a tree and a fountain.
Consideration
LED spotlights typically appear brighter than LED floodlights, even with the same wattage bulbs, because they produce more highly concentrated beams of light. Trade Show Lighting points out that users should employ floodlights for lighting large areas and spotlights for illuminating specific items. When it comes to choose the best lights, remember that the high-purity aluminum reflector plate is the best as it offers high precision and most accurate reflection. There are a few light distribution systems such as symmetrical narrow-angle system and asymmetric wide-angle system. There is a scale panel to facilitate the adjustment of the irradiation angle.
Beam Width
LED spotlights mainly stress on the 'spot' whose function is focusing light. That is to say they output a narrower beam of light, typically less than 45 degrees wide. Most of the light from a spotlight is concentrated onto a relatively small area producing a bright spot. LED floodlights while has a stress on 'flood' whose word meaning is diffusing the light. So the floodlight output a wider beam of light, up to 120 degrees, so the light from a floodlight is spread out over a much larger area.
Application
LED spotlights can offer a variety of lighting effects such as gradual transition, color blinking, random blinking, alternating gradient and other dynamic lighting effects. Other effects can be also achieved through DMX control according to LED Lighting Show. As the spotlight light is more concentrated, it appears brighter than a floodlight but only within its narrower beam, so a spotlight is more suited to illuminating objects such as a large building, a tree and a fountain.
Consideration
LED spotlights typically appear brighter than LED floodlights, even with the same wattage bulbs, because they produce more highly concentrated beams of light. Trade Show Lighting points out that users should employ floodlights for lighting large areas and spotlights for illuminating specific items. When it comes to choose the best lights, remember that the high-purity aluminum reflector plate is the best as it offers high precision and most accurate reflection. There are a few light distribution systems such as symmetrical narrow-angle system and asymmetric wide-angle system. There is a scale panel to facilitate the adjustment of the irradiation angle.