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A Landscape Of The Future Of High Efficient LED Lighting Jul 22, 2017

The world LED lighting market has passed into the maturity stage, of which the saturation makes a few segments struggle. According to stats from LEDinside, a division of market research company TrendForce, the world LED lighting market reached a value of USD 29.6 billion in 2016 and by 2017 the number will have possibly amounted to USD 33.1 billion, suggesting more room for the penetration rate of LED lighting, currently at 52% and continually to grow. However, price wars and technology competitions that run in the low-end market rankle international LED manufacturers. Hence, as part of Tier 1 companies, fairly competitive in finance and technology, tend to focus on high efficient LED lighting and other niche markets.

With a breakdown by region, the stats of 2016 show the top three regions with most market share: Europe at around 23%, followed by North America and then China. In general, Asian-Pacific region is to witness fastest growth. LEDinside set off to visit major lighting giants and LED manufacturers and would therefore like to share the outlook for the future of high efficient LED lighting.


The Rise of High Efficient LED Tubes in US Market


As part of US economic policy, inside the lighting industry in North America the claim ‘Assembled in USA’ aims to expand the domestic market and tailor production of home companies more towards America’s market segments. LEDinside expects, just as previous changes in America’s solar PV market that led to the rise of solar PV installers, the claim will foster the growth of US domestic LED lighting solution providers for new lighting projects and traditional or first-gen LED lighting replacement. Plenty of job vacancies will also emerge because of that.


American lighting companies are being highly active in developing LED lighting businesses, leading the market share of LED products to rise continuously. The demand for commercial and jobsite LED lighting is quite strong in America’s market at the moment, and especially those for troffers, panels, tunnel and high bay luminaires grow at fastest speed, which also speeds up the development of smart lighting and visible light communication (VLC).


LEDinside’s data presents the consolidated value of the world LED commercial lighting market (mostly tubes, troffers, and panel lights) in 2017 amounts to USD 6.347 billion. The CAGR (compound annual growth rate) over the period from 2016 to 2020 is projected to be 12%. The demand for LED tubes in North America stays high, and while shipping out supply, light manufacturers and project bidders have to ensure their products meet the stringent criteria of DLC 4.0, a set of quality and efficacy standards the DesignLights Consortium advocates to accelerate the widespread adoption of high-performing, energy efficient lighting solutions, after it took effect.


So, here comes the question: how is DLC 4.0 going to affect LED light designs, choice of chips, and corporate cost structures?


Underdriving LEDs vs Overdriving LEDs


Currently, lighting companies have been cautiously choosing LED chips and components for meeting different market segments needs and applications. In general, there are two approaches for the goal: 1) to overdrive LEDs to reduce numbers of light sources, and 2) to underdrive LEDs to enhance the quality of light.


In terms of high efficient lighting, according to Max Lin, Project Director at Sales & Marketing Center of the global LED chipmaker Epistar, ever since the price of LED chip has dipped to a sweet spot,, lighting companies tend to overdrive LEDs with high current to reach high luminous efficacy for the purpose of cutting down chip number to reduce cost. This approach with the pursuit of better lumens per dollar is commonly-used in manufacturing regular LED tube and bulb products. Mainstream as it is, overdriving LEDs still encounters several challenges regarding light quality, product lifespans, and, most of all, choice of thermal modules. Qualified thermal modules certainly come with extra cost. Also, for instance, overdrive LED tubes can encounter light quality problems, such as unevenness with hot spots and dark areas, and heat dissipation issues due to low number of chips used. 


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