LED bulbs in the market there are two important questions:
The first identity is unclear. Found that up over half of the LED bulb LED light bulb according to ITRI test industry led lighting solutions, marked the actual luminous flux are lower than the more than 10% of the indicated value.
The second is the uneven quality. Currently on the market is no set of specifications to be able to make it clear that the relationship between the price and quality of the LED bulbs.Causing consumers often hold “apples and oranges” comparison, some more took a higher price, but did not buy a high quality product led lighting solutions, the case-by-good money for bad money is more and more serious, but also caused by Europe and the United States and other countries. highly concerned about the identity and quality of the LED lamps / bulbs.
In view of this, the Bureau of Energy, Ministry of Economic Affairs for LED bulbs also accelerated the Energy Label driven, in this matter, the author is a happy and sad at the same. Joy is that, at least in Taiwan is about to have a commonality standard, can provide consumers need to select LED bulbs. The worry is that consumers spend more money, buy LED bulbs that meet the “the Energy Label benchmark requirements project” really have a quality protection?
More official representative market norms, able to do something to do with the lamp life, it should be the case that the U.S. Environmental Protection Agency / Energy Star for LED bulbs / lamps published LM-80 specification. However, since the release of this specification, in North America has been found in a number of different voices, some reliability experts and even began to call, should immediately stop as the LM-80 lumen maintenance (L70) LED bulb or lamp life judgment only basis.
In fact, in 2006, the U.S. Department of Energy Solid State Lighting (SSL) Quality Working Group, invited 32 reliability experts, very in-depth discussion of estimation methods for reliability and service life of the LED. Considerations LED industry technical capacity, the working group decided, on behalf of the reliability of LED components and lighting will be the most significant, and also the most easily quantifiable indicators lumen maintenance (L70). Because the traditional incandescent light bulbs in the use of tungsten burned, the lamp life to LED bulbs in lumens recession is gradual and slow led lighting solutions, early in the recession, people in the visual feel of has been to wait until the light source the recession to initial light source of 70% (L70), people will feel to the bulb dims, this case will affect the illumination. Therefore, the Working Group recommends that the specification of LM-80 lumen maintenance (L70) as the sole judge basis.