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LED operating life: durable light quality (2)
Source: | Author:Anonym | Published time: 2014-03-19 | 3788 Views | Share:

Mechanical effect

The causes of the occurrence of mechanical forces can be versatile. This can occur during LED manufacture, assembly or handling and during the use of certain materials which develop mechanical forces during large temperature fluctuations. If a LED is exposed to such forces, this can have a negative effect on its operating life, or can even destroy it

Power consumption

Every LED, and also every LED module, can be operated within a specific current range. The lower the current is within this range, the less energy is released and the lower the heat production is, which has a direct effect on the operating life.

Light

The particular LED's housing design plays an important role in the ageing process of the particular component, influenced by the light emitted by the chip. With many housing designs, the built-in reflector ages a lot in the first few hundred operating hours as a result of the high intensity and luminance of the light emitted by the chip.

Dampness

The LED itself is robust, non-sensitive, vibration-proof and unbreakable. If it is used properly, dampness is also not a problem: as it is not the LED itself but various metal parts, connections and electronic components inside a LED module that are sensitive and may corrode and can thus cause the module to fail. A suitable choice of materials for the LED prevents corrosion. Dampness protection is also absolutely necessary, in order to achieve the highest possible operating life of the LED modules.

Chemicals

Stress to the LED caused by chemical influences can vary greatly depending on the application location. For this reason, all environmental conditions must be taken into consideration when planning an LED lighting system. The following effects, among other things, have a negative effect on the operating life:
•Corrosive atmosphere (air with high sulfur dioxide content)
•Coastal climate with medium salt content
•Chemical industry
•Swimming pools with medium chloride content