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08
2015-05

ORED Lighting Develops Driver on Board Solution for its LED Lights

ORED has applied the advanced technology in high wattage COB module lights and develops a brand new ceramic based driver on board light series which is far way different from existing SMD type modules lights.



DOB (Driver on Board) series are designed to be driven directly off of AC 110V and 220V without converters. It is becoming a brilliant solution for lighting designs within limited space.



The ceramic based DOB series lights are not only better in design of viewing angle and efficiency but also has been put a lot of efforts in protection devices of LED to make sure customers to get the most reliable products. With 90-130V AC and 200-240V AC direct input, ORED’s lights with DoB solution in protection devices from soft start, OVP (over voltage protection), to heat compensation, making certain the LED chips inside cool and safe.


ORED thrives on providing customers with design-friendly products, and the latest DoB series lights will be no different. The converter and driver are the major factors on the lifetime limitation in LED lighting products. By using the DoB chip our lights are able to achieve higher efficiency and better lifetime. The LED lights of DoB chip solution could provide lighting output from 3W to 50W with 90lm/W, PF 0.95, CRI >70 and all these features allow us to provide better new solution .


Now the industrial giants including Epistar have started to develop the DoB chip technology, many of the international distributors and customers are very interested in getting the new solution and excited about this new module released in the market.



08
2015-05

ORED Lighting Applied the latest LED – Cooling and Thermal Management Design in LED Lights

As we all know, the life span of an LED depends on the semi-conductor material used as well as the current/heat relationship. The light output of the LED becomes weaker and weaker and once it reaches 50% of its initial value, the life expectancy of the LED has, by definition, been reached. A life span of a few hundred and up to 100,000 hours is possible, but only when avoiding high temperatures which drastically reduce the length of the LED’s life.


The radiant power or the luminous flux of an LED is very much dependent on the temperature of the semi-conductor. This means that the efficiency of the LED clearly diminishes the higher the temperature is.

Even when an LED is referred to as a “cold radiator”, the entire electric energy in the LED is not converted into luminous power. Here, just like other semi-conductors, a large portion of the electric energy (70%-80%) is converted into heat. This is why; unlike thermal radiators (light bulb) thermal management (cooling) is absolutely necessary. The effectiveness or in other words, the efficiency of the LED is the relationship of radiated luminous flux to applied electrical energy and is specified in Lumens per Watt (lm/W).


Figure 1 Illustration of the latest LED cooling design



The above picture shows the latest cooling design applied in our high power LED lights. By using the ø 6mm heat pipe, the heat generated by the lighting quickly transfers to the cooling module of massive radiation fins, efficiently reduce the temperature of the LED lighting chips and extend the lifespan of the lighting source. The heat conductivity hereby reaches 383.8 w/m℃,which significantly reduces the temperature and lengthens LED lifespan.