It is known that the light emission of an LED, like other light sources, inevitably decreases over time. However, the LED, unlike other types of sources, does not burn out over time but dims.

According to the standards established by the documents, the life of the LED is the period during which the luminous flux of the module reaches 70% of the original. This characteristic is conventionally called L70. The standard for the L70 index is 50,000 hours (which is approximately 10 years with an average duration of darkness and twilight on the planet of 14 hours).

All diode manufacturers proceed from this indicator and guarantee its implementation in the technical documentation. However, a luminaire made on the basis of LED will work for the estimated time ONLY if the crystal temperature is within the parameters specified by the manufacturer! As a rule, this temperature should be in the range of 60–65 ° C. Meanwhile, a huge number of explosion-proof luminaire manufacturers do not pay due attention to heat dissipation using incandescent lamp bodies, or they fill the LEDs with a compound. It causes the LED bulb overheating, and as a result, the rapid burnout of the lamps.

As can be seen from the graph, when the crystal temperature rises to at least 75–85 ° С, the L70 period can be reduced to 20,000–30,000 hours. More than twice!

Therefore, when purchasing lamps of the above designs, the consumer should be aware of the temperature at the point of contact of the LED substrate with the radiator and set the estimated life of the LED (according to the documentation of the LED manufacturer).

So, the higher the heating temperature, the faster its coating, a phosphor, burns out. If you do not cool the LED, then the light source will lose its brightness and strength very quickly. To prevent the LED bulb from overheating, heat must be removed. We developed our own concept based on our luminaire. Several options were tested and the ribbing of the body made it possible to increase the heat dissipation area of ​​the body, maintaining a compact size. The result is a sufficient area to extend the life of the LED without losing brightness up to 10 years or more by preventing LED lights from overheating.