Environmental impact, reduction of consumption, increased product life length are the main objectives of the awareness campaign done in favor of LED bulbs. This new lighting technology has appeared on the market about twenty years ago and is set to become, because of its important components "green", the instrument par excellence for lighting public and private environments.
An appreciable part of all the electricity used in the world is used for the single lighting activities. In order to limit fuel consumption and reduce operating expenses, states aim for years on LED technology. Data in hand, this technology promises a bulb life of more than the 30.000 hours or a frequency parts 10 times lower than the previous incandescent. At this factor must be added that the new generation of light bulbs for lighting, It lacks sodium, mercury and fluorescent (harmful substances and unhealthy), It lacks the filament or the typical gas of the preceding bulbs (fluorescent or incandescent) and it uses electronic components that are deemed to be less polluting total.
The LED lighting is certainly a product that presents a number of interesting effects on several fronts. But are we really sure that the technology developed for this sector for twenty years now has reached the point of full maturity? We have gathered here some observations.
The actual efficiency of the LED bulb is given by the sum of the components of the product or: the quality of LED technology, the goodness of design of its thermal structure, the effectiveness of the current transformer and of the optical instrument used.
Unfortunately, there are the LED lamps market which demonstrates a lack of quality of light and whose actual duration is not reflected what is written on the packaging. Products of this kind may be the result of poor research and dedication of the manufacturing or only posts "old technologies". The result of this type of product is the emission of a light source not properly adapted to the visual comfort and a low quality of the components which deteriorates well before the "thousand hours' operation of promises.
Some technical details
To understand the reason for this difference between the promised results and those retained have to go back a few years, when between 2010 and the 2011 the prices of the "chip system and LED plastic packages" produced exclusively for large LED screens, It suffered a sharp fall in production saturation. The low prices of the components thus allowed to use technology redundant ( before too expensive) reimpiegandola in the lighting field.
These LEDs "reused" were used in the types of low- and medium-power lighting typical of the domestic environments and the technology employed structure mounts a plastic package PPA .
The PPA (acronym for polyphthalamide) It is a thermoplastic resin capable of resisting high temperatures and is allocated within the LED bulb. The resin receives a considerable amount of light reflected from the white bright surfaces of the cavity of the package in which they are integrated circuits of the LEDs (figure to the side). The constant of the plastic package LED lighting action does discolor the white surfaces of the bulb, while the blue photons emitted by the LED chip lead to discoloration of the PPA package surface starts to absorb the light with consequent depreciation of the luminous flux maintenance.
Lowering the cost of the products using unsuitable components ( In this case, use technology that was meant for the product LED TV) or low price is not always the solution to spread massively product. The risk, as evidenced, It is to market a product that runs the reliability and performance that disregards the promise.
Unlike the low-power LEDs and media mounted on plastic packages PPA, the high power LEDs that mount on ceramic base manage to have high performance and to maintain over time the initial luminous flux, color stability, ensuring energy saving and much underlined maintenance.
E 'must then optimize the technology used by switching to the disposal of LED plastic packages PPA to those mounted on ceramic looking pero' to contain the costs arising from the different components and thus making them accessible to the consumer.
A second interesting point on the optimization of tencologia LED is given by the design of the structure goodness in which it is placed.
The technology inside the bulb must in fact be preserved from high temperatures produced during its operation. Here then is to ensure proper functionality, product design takes on an important aspect of what the technology.
The LED lamps in operation are warm to the touch ( about half of the heat produced by an incandescent bulb ). The LED bulb of the bulb is in fact the part responsible for the dispersion of the heat produced while the heatsink, Another important element, It allows to maintain the power supply and electronics as much as "fresh" as possible.
When the size of the electronic components go hand in hand with the design of the product you have a proper management of airflow and resulting in a better yield of light, stability of the electronic components, durability and effective but always risparmio.Non 'This combination of elements can not find the correct proportions.
Then there is at least one other case in which LED technology has failed to "emerge" as promised: It is the case of the halogen bulb. It used very often in homes and shops, this type of lighting had the advantage of producing an intense light while occupying a very small space, It reached very high temperatures of normal operation and it was able to dissipate as much heat even with small bulbs. Current LED products do not "replace" this category of their product for a problem related to temperature. As above mentioned fact, the typical electronic circuits of LED technology must remain at lower temperatures and consequently can not dissipate the same heat in a reduced volume. Only a confirmation yet another aspect of the fact that there is still much room for research and development of new products.
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