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Commercial Lighting Station / Railway

Metropolitan Intercity Railway Company, Tsukuba Express General DepotTsukubamirai City, Ibaraki Prefecture

Changing to LED lighting across the vast site of the general depot, a bright, safe lighting environment has been created whilst also contributing towards energy savings

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  • LED
  • The holding area for Tsukuba Express carriages is illuminated with LEDioc FLOOD BLITZ 80W type, providing brightness equivalent to the existing scheme whilst greatly reducing consumption.


Installation date

March, 2020

Situated in Tsukubamirai City, Ibaraki Prefecture, the facility serves as the general depot of the Tsukuba Express. Opened in August 2005, Tsukuba Express is an urban high-speed railway which connects the 58.3km between Akihabara Station (Chiyoda Ward, Tokyo), and Tsukuba City Station (Ibaraki Prefecture) with a minimum journey time of just 45 minutes. Spanning an area of 189,779.19m², the vast site is established as the main depot where overall maintenance of the carriages takes place, and as such it is equipped with facilities such as an inspection and testing area, a maintenance area and a factory, amongst others.

Coupled with the ban on mercury lamp production resulting from the Minamata Convention on Mercury, the passing of 15 years since the opening of the facility led the Metropolitan Intercity Railway Company to conclude the time was right for a refitting and upgrade of the existing lighting scheme. Subsequently, construction works for the site-wide lighting upgrade to low-energy LED lighting were carried out from 2017 through to 2019. The existing twin mercury lamp fixtures were replaced with the LED floodlight LEDioc FLOOD BLITZ 80W type for the railroad lighting; with the compact LED streetlight LEDioc ROAD S for the on-site road lighting, and with the LEDioc FLOOD NEO 60 class for the cleaning areas. The resulting scheme offers, large-scale energy savings whilst still maintaining the brightness of the existing scheme.

Careful consideration was taken with angle adjustments when installing the LED luminaires, in order to avoid light shining into the sightline of crew and staff; the layout of the luminaires was also re-evaluated through illuminance diagrams in order to reduce the number of installed units, with the end result being a pleasant and comfortable lighting environment which also contributes greatly towards energy savings.


  • LEDioc FLOOD BLITZ 80W type - 144

  • LEDioc ROAD S - 49

  • LEDioc FLOOD NEO 60 class - 19

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