Many ultra-bright LED lamps targeted at replacing mercury lamps, metal halide lamps and HID floodlights were exhibited at LED Next Stage 2014.
LED Next Stage 2014 is a trade show that took place from March 4 to 7, 2014, in Tokyo.
The market for LED lamps has been growing because of the needs to replace incandescent lamps. However, such needs have almost been met in Japan, and the market is even expected to shrink from now due to decreasing unit prices.
One of the measures that LED makers can take is to realize ultra-bright LED lamps with high currents and aim at the market for mercury lamps, metal halide lamps and HID floodlights used for street lamps, manufacturing plants, storehouses, gymnastic halls, stadiums, etc.
At the trade show, many LED lamps and floodlights having high outputs equivalent to 1,000-1,500W were exhibited. Many of them have a brightness equivalent to that of a metal halide lamp and a 50-70% lower power consumption.
Iwasaki Electric Co Ltd showcased its "LEDioc Flood Duell," an LED floodlight targeted at lighting systems for golf practice ranges and stadiums such as baseball stadiums.
The luminous flux of the Flood Duell is 74,500-95,000lm for a 1,000W model, which is equivalent to a 1,500W metal halide lamp. The power consumption required to realize the same brightness for an entire baseball stadium with the Flood Duell in place of metal halide lamps is 113.4kW, which is 56% smaller than in the case of using metal halide lamps.
The "LEDioc Flood Suporato," Iwasaki Electric's another LED floodlight, has a brightness equivalent to or higher than that of a 400W mercury lamp, enabling to reduce power consumption by about 70%.
The "Lanstar ZLS-300" high-brightness LED floodlight exhibited by Furukawa Co Ltd has a rated power consumption of 300W and a luminous flux of 27,000lm, which is equivalent to the brightness of a 1,200W mercury lamp.
Royal Philips NV showed an LED lamp for high ceilings. Its luminous flux is 21,000lm. If 60 mercury lamps are replaced with it in a gymnastic hall, storehouse or manufacturing plant, the brightness increases by 120% and the power consumption decreases by 48%, the company said.
The introduction cost of the LED lamp is still higher than that of a mercury lamp. But it reduces electricity cost, and it needs to be replaced less frequently.
"The cost of the LED lamp will become equivalent to that of a mercury lamp in about 2.4 years and lower than that after that," Royal Philips said.