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▣ Definition of the LED

LED is composed of two semiconductor compounds with positive and negative electrical properties. The N (Negative) type semiconductor due to prevalence of electronic and the P (Positive) type semiconductor due to prevalence of hole are attached in a form of a thin layer.



If a voltage here is charged, electrons of an N layer will move to a P layer, combining with the hole while radiating energy, i.e. light. At this time, the difference between the N layer and the P layer determines a color of light. If a difference in energy is big, short wavelength (blue lights) will come out. If smaller, red lights will come out. Beyond the visible region, ultraviolet light and infrared light it will come out. This energy difference depends on the material of the compound.

▣ Importance of heat dissipation

Why is LED ’s heat dissipation important?

Heat dissipation in LED lighting is one of the very core technologies. LED generates thermal energy of 70% in order to obtain a light energy of 30%. At this time, unless thermal energy of 70% is not dissipated, a life of LED will be significantly reduced, thereby reducing its useful life.


So we can say that this heat dissipation technology is very important.


all industrial fields does not manage to maintain a temperature of 25 ℃. Many industrial fields have their temperature maintained at 50 ~ 60 ℃or higher. So when designing Industrial LED bay lights, increased heat dissipation must be considered in design. The Ease GramLED Company developed Heat Sink for industrial purpose. As you see in the figure, the Company produces and sells a customized Heat Sink.


By making Heat Pin of the same model variable, it controls the amount of heat dissipation.


Heat Sink

▣ Comparison with traditional lighting and LED bay lights

Compared with the metal products, Industrial LED lighting enables high light-energy efficiency of 50% or more and reduced energy consumption of 50% or more.


– Installation effects in LED Bay light and others including:

1) Energy saving of 229% compared with a metal lamp
(Metal lamp 400W => Gram LED 175W)

2) Light efficiency improvement of 243% or more
(Metal lamps 230Lux => GramLED 560Lux)

3) Useful life improvement of 3000 hours or more
(Metal lamps 8000 hours => 30,000 hours or more)