Members of the Nemeth family sit in their room lit by solar-charged LED strips that will help them reduce their energy bill under a programme run by the Romaversitas Foundation in Bicske, Hungary, December 15, 2016. Picture taken December 15, 2016. REUTERS/Bernadett Szabo 

Women protest against Republican presidential nominee Donald Trump and the GOP in front of Trump Tower in Manhattan, New York City, U.S., October 19, 2016. REUTERS/Eduardo Munoz TPX IMAGES OF THE DAY

Women protest against Republican presidential nominee Donald Trump and the GOP in front of Trump Tower in Manhattan, New York City, U.S., October 19, 2016. REUTERS/Eduardo Munoz 

Women protest against Republican presidential nominee Donald Trump and the GOP in front of Trump Tower in Manhattan, New York City, U.S., October 19, 2016. REUTERS/Eduardo Munoz 

Women protest against Republican presidential nominee Donald Trump and the GOP in front of Trump Tower in Manhattan, New York City, U.S., October 19, 2016. REUTERS/Brendan McDermid 

Performers take part in a dragon dance decorated with LED lights to celebrate the upcoming Mid-Autumn Festival in Hong Kong, China September 14, 2016. REUTERS/Bobby Yip 

Workers walk near vertical farming beds growing a variety of baby greens beneath light emitting diode (or "LED") lamps and using a patented growing algorithm of controlled light, nutrients and temperatures at an AeroFarms Inc. indoor vertical farming facility in a former indoor paintball arena in Newark, New Jersey, June 24, 2016. Picture taken June 24. REUTERS/Mike Segar 

A worker inspects vertical farming beds for growing a variety of baby greens beneath light emitting diode (or "LED") lamps and using a patented growing algorithm of controlled light, nutrients and temperatures at an AeroFarms Inc. indoor vertical farming facility in a former indoor paintball arena in Newark, New Jersey, June 24, 2016. Picture taken June 24, 2016. REUTERS/Mike Segar 

A worker carries a box of freshly harvested greens past vertical farming beds growing a variety of baby greens beneath light emitting diode (or "LED") lamps and using a patented growing algorithm of controlled light, nutrients and temperatures for growing baby greens at an AeroFarms Inc. indoor vertical farming facility in a former indoor paintball arena in Newark, New Jersey, June 24, 2016. Picture taken June 24. REUTERS/Mike Segar 

Baby red romaine lettuce (bottom) and arugula (top) grow in vertical farming beds beneath light emitting diode (or "LED") lamps and using a patented growing algorithm of controlled light, nutrients and temperatures for growing a variety of baby greens at an AeroFarms Inc. indoor vertical farming facility in a former indoor paintball arena in Newark, New Jersey, June 24, 2016. Picture taken June 24, 2016. REUTERS/Mike Segar 

A worker carries freshly harvested baby kale grown in vertical farming beds beneath light emitting diode (or "LED") lamps and using a patented growing algorithm of controlled light, nutrients and temperatures for growing a variety of baby greens at an AeroFarms Inc. indoor vertical farming facility in a former indoor paintball arena in Newark, New Jersey, June 24, 2016. Picture taken June 24, 2016. REUTERS/Mike Segar 

A worker rides a lift while carrying freshly harvested baby kale grown in vertical farming beds beneath light emitting diode (or "LED") lamps and using a patented growing algorithm of controlled light, nutrients and temperatures for growing a variety of baby greens at an AeroFarms Inc. indoor vertical farming facility in a former indoor paintball arena in Newark, New Jersey, June 24, 2016. Picture taken June 24. REUTERS/Mike Segar 

A worker inspects vertical farming beds growing a variety of baby greens beneath light emitting diode (or "LED") lamps and using a patented growing algorithm of controlled light, nutrients and temperatures at an AeroFarms Inc. indoor vertical farming facility in a former indoor paintball arena in Newark, New Jersey, June 24, 2016. Picture taken June 24, 2016. REUTERS/Mike Segar 

Worker Kwame Holmes inspects baby red romaine lettuce growing in a vertical farming bed beneath light emitting diode (or "LED") lamps and using a patented growing algorithm of controlled light, nutrients and temperatures for growing a variety of baby greens at an AeroFarms Inc. indoor vertical farming facility in a former indoor paintball arena in Newark, New Jersey, June 24, 2016. Picture taken June 24, 2016. REUTERS/Mike Segar TPX IMAGES OF THE DAY

Worker Kwame Holmes inspects baby red romaine lettuce growing in a vertical farming bed beneath light emitting diode (or "LED") lamps and using a patented growing algorithm of controlled light, nutrients and temperatures for growing a variety of baby greens at an AeroFarms Inc. indoor vertical farming facility in a former indoor paintball arena in Newark, New Jersey, June 24, 2016. Picture taken June 24. REUTERS/Mike Segar 

A worker rides a lift past racks of vertical farming beds lit with light emitting diode (or "LED") lamps and using a patented growing algorithm of controlled light, nutrients and temperatures to grow a variety of baby greens at an AeroFarms Inc. indoor vertical farming facility in a former indoor paintball arena in Newark, New Jersey, June 24, 2016. Picture taken June 24, 2016. REUTERS/Mike Segar TPX IMAGES OF THE DAY

Baby red romaine lettuce grows in a vertical farming bed beneath light emitting diode (or "LED") lamps and using a patented growing algorithm of controlled light, nutrients and temperatures, at an AeroFarms Inc. indoor vertical farming facility in a former indoor paintball arena in Newark, New Jersey, June 24, 2016. Picture taken June 24, 2016. REUTERS/Mike Segar 

Baby red romaine lettuce grows in a vertical farming bed beneath light emitting diode (or "LED") lamps and using a patented growing algorithm of controlled light, nutrients and temperatures, at an AeroFarms Inc. indoor vertical farming facility in a former indoor paintball arena in Newark, New Jersey, June 24, 2016. Picture taken June 24, 2016. REUTERS/Mike Segar 

The control centre of all the doors of a former Regional Government HQ Nuclear bunker built by the British government during the Cold War is seen after it came up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

The generator indicators light up in a former Regional Government HQ Nuclear bunker built by the British government during the Cold War which has come up for sale in Ballymena, Northern Ireland on February 4, 2016. It is owned by the Office of Northern Ireland's First Minister and Deputy First Minister and capable of accommodating 236 personnel for extended periods. A large range of the original fixtures and fittings are to be included in the sale. It is believed to be one of the most technically advanced bunkers built in the UK with an array of advanced life support systems. In the event of a nuclear attack, the building could operate in a shut-down capacity for 30 days. The lower floor is completely underground and the upper floor is mounded over with 1 cubic metre of earth. REUTERS/Clodagh Kilcoyne 

Spain's Prime Minister Mariano Rajoy (R) looks a led light from a car during celebrations for the 40th anniversary SEAT Technical Centre in their car factory of Martorell, near Barcelona, Spain, September 8, 2015. REUTERS/Albert Gea 

A member of Singapore's Starlight Alchemy performs with LED lights during a media preview of the Singapore Night Festival in Singapore August 19, 2015. The Singapore Night Festival which features performances and light installations will take place on the last 2 weekends of August. REUTERS/Edgar Su

Fireworks explode as children performers wearing LED-lit costumes dance during a Golden Jubilee celebration parade rehearsal in Singapore August 1, 2015. Singapore marks 50 years of independence on Sunday. Picture taken August 1, 2015. REUTERS/Edgar Su

Children performers wearing LED-lit costumes dance during a Golden Jubilee celebration parade rehearsal in Singapore August 1, 2015. Singapore marks 50 years of independence on August 9. REUTERS/Edgar Su TPX IMAGES OF THE DAY

Children performers wearing LED-lit costumes run to their positions during a Golden Jubilee celebration parade rehearsal in Singapore August 1, 2015. Singapore marks 50 years of independence on August 9. REUTERS/Edgar Su

A security guard stands by the entrance to the light sculpture called "Multiverse", a tunnel of lights that links the East and West Buildings of the National Gallery in Washington, May 5, 2015. The work features approximately 41,000 computer-programmed LED nodes that run through channels along the entire 200-foot-long space.
REUTERS/Kevin Lamarque TPX IMAGES OF THE DAY

Catholic faithful hold up LED candles as Pope Francis attends a meeting with Filipino families in Manila January 16, 2015. Pope Francis called on the Philippine government on Friday to tackle corruption and hear the cries of the poor suffering from "scandalous social inequalities" in Asia's most Catholic country. The Pope arrived the Philippines on Thursday for a five-day visit, the second and last leg of his week-long Asian tour.
REUTERS/Ezra Acayan (PHILIPPINES - Tags: RELIGION SOCIETY TPX IMAGES OF THE DAY) 

A reveller dressed up as a "stick man" holds a glass as he takes part in New Year's celebrations in Coin, near Malaga, southern Spain, early January 1, 2015. Villagers and revellers dressed up in funny costumes to take part in the New Year's celebration. REUTERS/Jon Nazca (SPAIN - Tags: SOCIETY ANNIVERSARY) 

A woman holds a sign during a rally at Union Square in New York November 24, 2014. Missouri Governor Jay Nixon urged people in the St. Louis area to show respect and restraint following a grand jury's decision on whether to criminally charge Darren Wilson, a white police officer, in the August fatal shooting of Michael Brown, an unarmed black teenager in Ferguson, Missouri.
REUTERS/Shannon Stapleton (UNITED STATES - Tags: CIVIL UNREST CRIME LAW POLITICS) 

A man in an LED light mask (2nd R) performs the live art piece "Player" as he sits among visitors during the press preview of French artist Pierre Huyghe's first major retrospective at the Los Angeles County Museum of Art (LACMA) in Los Angeles, California November 19, 2014. The show, which opens on Sunday for its only U.S. viewing, exhibits 60 of Huyghe's works over the past 28 years. It includes videos, interactive works, paintings as well as animals and fake weather that visitors have to confront. Huyghe's art, and the show as a whole, is an open environment meant to change and act randomly over time. REUTERS/Jason Redmond (UNITED STATES - Tags: ENTERTAINMENT SOCIETY TPX IMAGES OF THE DAY) 

Junkoh Nagakura walks out from the "Ruriden", a cemetery that uses high-powered LED lights to illuminate over 2,000 Buddha statues carved in crystals, in downtown Tokyo October 27, 2014. Funeral arrangements are normally left to those who have been left behind but the latest trend in Japan, which literally translates to "End of life" preparations, is for the ageing to prepare their own funerals and graves before they set off on their journey to the great beyond. With a population that is expected to shrink by nearly 30 million people over the next 50 years, the market for funerals, graves and anything related to the afterlife is still very much alive. Picture taken October 27, 2014. REUTERS/Toru Hanai (JAPAN - Tags: BUSINESS TPX IMAGES OF THE DAY RELIGION SOCIETY)

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Buddha statues carved in crystals are pictured at the "Ruriden", a cemetery that uses high-powered LED lights to illuminate over 2,000 Buddha statues, in downtown Tokyo October 27, 2014. Funeral arrangements are normally left to those who have been left behind but the latest trend in Japan, which literally translates to "End of life" preparations, is for the ageing to prepare their own funerals and graves before they set off on their journey to the great beyond. With a population that is expected to shrink by nearly 30 million people over the next 50 years, the market for funerals, graves and anything related to the afterlife is still very much alive. Picture taken October 27, 2014. REUTERS/Toru Hanai (JAPAN - Tags: BUSINESS SOCIETY RELIGION)

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Buddha statues carved in crystals are pictured at the "Ruriden", a cemetery that uses high-powered LED lights to illuminate over 2,000 Buddha statues, in downtown Tokyo October 27, 2014. Funeral arrangements are normally left to those who have been left behind but the latest trend in Japan, which literally translates to "End of life" preparations, is for the ageing to prepare their own funerals and graves before they set off on their journey to the great beyond. With a population that is expected to shrink by nearly 30 million people over the next 50 years, the market for funerals, graves and anything related to the afterlife is still very much alive. Picture taken October 27, 2014. REUTERS/Toru Hanai (JAPAN - Tags: BUSINESS SOCIETY RELIGION)

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A kid touches a Christmas illumination at Yomiuri Land amusement park in Tokyo November 8, 2014. The amusement park uses three millions LED lights for its Christmas illumination. REUTERS/Yuya Shino (JAPAN - Tags: SOCIETY) 

A boy looks at a kimono made from silkworm cocoons which glow yellow when exposed to blue LEDs, at the "Hikari the Wonder of Light" exhibition at the National Museum of Nature and Science in Tokyo October 29, 2014. REUTERS/Toru Hanai (JAPAN - Tags: ENVIRONMENT SCIENCE TECHNOLOGY SOCIETY) 

Silkworm cocoons glow several colours when exposed to blue LEDs at the "Hikari the Wonder of Light" exhibition at the National Museum of Nature and Science in Tokyo October 29, 2014. REUTERS/Toru Hanai (JAPAN - Tags: ENVIRONMENT SCIENCE TECHNOLOGY) 

A model presents a creation by Ukrainian designer Oleksiy Zalevskiy during Ukrainian Fashion Week in Kiev October 10, 2013. REUTERS/Gleb Garanich (UKRAINE - Tags: FASHION TPX IMAGES OF THE DAY) 

A sculpture containing 7,000 recycled plastic water bottles with LED lights, measuring 20 metres in diameter and 10 metres in height, shines at Hong Kong's Victoria Park September 14, 2013. The "Rising Moon", a giant lantern created to celebrate the upcoming Mid-Autumn Festival which falls on September 19, 2013, is designed by four local architectural designers, combining the concepts of environmental conservation and vitality, according to the official news release. REUTERS/Bobby Yip (CHINA - Tags: TRAVEL SOCIETY ENVIRONMENT TPX IMAGES OF THE DAY) 

The moon shines above a sculpture containing 7,000 recycled plastic water bottles with LED lights, measuring 20 metres in diameter and 10 metres in height, at Hong Kong's Victoria Park September 10, 2013. The "Rising Moon", a giant lantern created to celebrate the upcoming Mid-Autumn Festival which falls on September 19, 2013, is designed by four local architectural designers, combining the concepts of environmental conservation and vitality, according to the official news release. REUTERS/Bobby Yip (CHINA - Tags: ENTERTAINMENT SOCIETY) 

People with LED lights take part in forming a giant pink dot at the Speakers' Corner in Hong Lim Park in Singapore June 29, 2013. About 21,000 people took part in the Pink Dot Sg event to promote acceptance of the Lesbian, Gay, Bisexual, Transgender (LGBT) community in Singapore, the organizer said. REUTERS/Edgar Su (SINGAPORE - Tags: SOCIETY) 

A New York Police Department officer in tactical gear stands in front of a U.S. flag made from light-emitting diode (LED) lights at Times Square in New York, March 25, 2013. REUTERS/Lucas Jackson (UNITED STATES - Tags: SOCIETY CRIME LAW) 

Employees work at a production line of low energy consumption (LED) light bulbs at a factory in Nanjing, Jiangsu province May 18, 2012. Armed with nearly 2 billion yuan in cash in total, the bigger LED companies are ramping up capacity, despite a slow market, to better capture a larger share of state-backed LED lighting projects China plans to roll out this year, analysts said. Picture taken May 18, 2012. To match Analysis LED-CHINA/ REUTERS/Sean Yong (CHINA - Tags: BUSINESS) 

Journalists take pictures of the economy class cabin of the Boeing 787 Dreamliner as it is lit with rainbow colored LED lighting during an media tour of the aircraft in Singapore February 12, 2012. REUTERS/Edgar Su (SINGAPORE - Tags: TRANSPORT BUSINESS) 

Visitors walk on "Tiger and Turtle - Magic Mountain", a 20-metre (66 ft) high and 120 ton (109,000 kg) heavy galvanized curved steel sculpture that looks like a roller coaster, in Duisburg November 18, 2011. The new 2-million euro ($2.7 million) landmark of the Ruhr region was built on a former mining waste hill and is designed by two Hamburg artists Ulrich Gerth and Heike Mutter. The 249 steps of the 220-metre (0.14 miles) long walkway are illuminated by LED at night. REUTERS/Wolfgang Rattay (GERMANY - Tags: SOCIETY) 

Employees of SMBC Nikko Securities Inc. work using only LED desk lights during daytime at the company's office in Tokyo June 30, 2011, a day before a target to cut electricity use by 15 percent in regions affected by Japan's March 11 earthquake and tsunami takes effect. The cuts are aimed at helping avoid power blackouts during the peak summer demand period amid efforts to restore generating capacity lost in the disaster. Picture taken June 30, 2011.
REUTERS/Toru Hanai (JAPAN - Tags: DISASTER ENERGY BUSINESS) 

An employee walks past Kidney beans grown under light-emitting diodes (LEDs) inside an office of Pasona Group, an employment and staffing company, during a photo opportunity in Tokyo October 20, 2010. Vegetables, fruits and rice are grown and harvested by the employees at the company's "urban farm", aimed at creating a working environment coexisting with nature, according to the company. Negotiators from over 190 countries are gathered in Nagoya, Japan for a United Nations meeting to discuss ways to fight rising extinctions of plants and animals from pollution, climate change and habitat loss. REUTERS/Yuriko Nakao (JAPAN - Tags: BUSINESS ENVIRONMENT FOOD AGRICULTURE) 

Kidney beans grown under light-emitting diodes (LEDs) are pictured inside an office of Pasona Group, an employment and staffing company, during a photo opportunity in Tokyo October 20, 2010. Vegetables, fruits and rice are grown and harvested by the employees at the company's "urban farm", aimed at creating a working environment coexisting with nature, according to the company. Negotiators from over 190 countries are gathered in Nagoya, Japan for a United Nations meeting to discuss ways to fight rising extinctions of plants and animals from pollution, climate change and habitat loss. REUTERS/Yuriko Nakao (JAPAN - Tags: AGRICULTURE ENVIRONMENT BUSINESS FOOD IMAGES OF THE DAY) 

German Chancellor Angela Merkel (R) holds an organic light emitting diode (OLED) as she stands with Volker Bouffier, Prime Minister of the German state of Hesse during their visit to the new Material Research Center of the Merck company in Darmstadt, September 23, 2010. REUTERS/Alex Domanski (GERMANY - Tags: POLITICS BUSINESS SCI TECH) 

German Chancellor Angela Merkel holds an organic light emitting diode (OLED) as she visits the new Material Research Center of the Merck company in Darmstadt, September 23, 2010. REUTERS/Alex Domanski (GERMANY - Tags: POLITICS BUSINESS) 

A visitor is reflected on a display of Kaneka Corp's organic light emitting diodes (OLED) at the LED/OLED Lighting Technology Expo in Tokyo April 14, 2010. REUTERS/Yuriko Nakao (JAPAN - Tags: BUSINESS EMPLOYMENT) 

A visitor looks at a display of Kaneka Corp's Organic Light Emitting Diodes (OLED) at the LED/OLED Lighting Technology Expo in Tokyo April 14, 2010. REUTERS/Yuriko Nakao (JAPAN - Tags: BUSINESS EMPLOYMENT) 

A man walks past Seiwa Electric's display of light emitting diodes (LED) at the LED/OLED Lighting Technology Expo in Tokyo April 14, 2010. REUTERS/Yuriko Nakao (JAPAN - Tags: BUSINESS SOCIETY) 

A woman watches 3D TVs using light emitting diode-backlit LCD display exhibited at the main office of Samsung Electronics during a photo call in Seoul February 25, 2010. Samsung Electronics launched 3D TV sales in South Korea on Thursday, with an aggressive target as it seeks to defend flat-panel margins and gain an early lead in the emerging market. REUTERS/Lee Jae-Won (SOUTH KOREA - Tags: BUSINESS SCI TECH) 

A visitor uses a computer next to a light emitting diode (LED) television at a showroom of Samsung Electronics at the company's headquarters in Seoul January 7, 2010. Samsung Electronics Co Ltd is headed for a robust year after October-December profit estimates came above market forecasts as the company rides a recovery in memory chips, its cash cow business. REUTERS/Jo Yong-Hak (SOUTH KOREA - Tags: BUSINESS IMAGES OF THE DAY) 

Women look at Christmas decorations made of light emitting diodes (LED) in Tokyo November 24, 2009. REUTERS/Toru Hanai (JAPAN SOCIETY) 

People walk under light emitting diodes (LED) used as Christmas decorations in Tokyo November 24, 2009. REUTERS/Toru Hanai (JAPAN SOCIETY SCI TECH) 

A couple eats an ice cream under light emitting diodes (LED) used as Christmas decorations in Tokyo November 24, 2009. REUTERS/Toru Hanai (JAPAN SOCIETY SCI TECH) 

People walk under light emitting diodes (LED) used as Christmas decorations in Tokyo November 24, 2009. REUTERS/Toru Hanai (JAPAN SOCIETY SCI TECH IMAGES OF THE DAY) 

A man takes photos of white and blue light emitting diodes (LED) used as Christmas decorations at Tokyo Midtown in Tokyo November 20, 2009. REUTERS/Toru Hanai (JAPAN SOCIETY)