Abstract
We have developed a meter-scale light emitting diode (LED)-embedded light fabric and its weaving machine for application to a light device for fabric ceilings, which have recently become desired for lightweight safe ceilings in Japan and other countries with frequent earthquakes. The LED fabric structure is 1.2-m-wide woven fabric that has 5-mm-wide LED chip-mounted printed circuit board (PCB) tapes as wefts. LEDs are mounted on the tape of PCBs with a reel-to-reel chip mounting system. Then, the LED-mounted tapes are woven with a developed automatic looming machine that aligns the weft with an accuracy of 0.9 mm, which is suitable for precise arrangement of LEDs and wiring to power supply. A 1.2 × 1.2 m LED-embedded light fabric weighing 320 g/m2 was woven. The luminance of the LED fabric is 353 lx at a distance of 1 m, which is the luminance of conventional office lighting. The temperature increase of LEDs without a rigid cooling aluminum plate is only 5.8 °C, and the LED fabric is flexible enough to sustain 1,000 bends down to a radius of 3 mm. This LED fabric and its weaving technology will lead to light devices that have lightweight, large area, and high flexibility for fabric ceilings, walls, and other large areas in homes and offices.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Aman M, Jasmon G, Mokhlis H, Bakar A (2013) Analysis of the performance of domestic lighting lamps. Energy Policy 52:482–500
Ayob M, Kendall G (2008) A survey of surface mount device placement machine optimisation: machine classification. Eur J Oper Res 186:893–914
Ayob M, Kendall G (2009) The optimisation of the single surface mount device placement machine in printed circuit board assembly: a survey. Inter J Syst Sci 40:553–569
Berger H (1999) Form and function of tensile structures for permanent buildings. Eng Struct 21:669–679
Bletzinger KU, Ramm E (2001) Structural optimization and form finding of light weight structures. Comput Struct 79:2053–2062
Branas C, Azcondo F, Alonso J (2013) Solid-state lighting: a system review. IEEE Ind Electron Mag 7:6–14
Bridgensa B, Birchall M (2012) Form and function: the significance of material properties in the design of tensile fabric structures. Eng Struct 44:1–12
Byun J, Hong I, Lee B, Park S (2013) Intelligent household LED lighting system considering energy efficiency and user satisfaction. IEEE Trans Consum Electron 59:70–76
Cherenack K, Zysset C, Kinkeldei T, Munzenrieder N, Troster G (2010) Woven electronic fibers with sensing and display functions for smart textiles. Adv Mater 22:5178–5182
Dubois M, Blomsterberg A (2011) Energy saving potential and strategies for electric lighting in future North European, low energy office buildings: a literature review. Energy Build 43:2572–2582
Fraser S, Raby A, Pomonis A, Goda K, Chian SC, Macabuag J, Offord M, Saito K, Sammonds P (2013) Tsunami damage to coastal defences and buildings in the March 11th 2011 M w 9.0 Great East Japan earthquake and tsunami. Bull Earthq Eng 11:205–239
Hasegawa Y, Shikida M, Ogura D, Sato K (2008) Fabrication of a wearable fabric tactile sensor produced by artificial hollow fiber. J Micromech Microeng 18:085014
Magliulo G, Pentangelo V, Maddaloni G, Capozzi V, Petrone C, Lopez P, Talamonti R, Manfredi G (2012) Shake table tests for seismic assessment of suspended continuous ceilings. Bull Earthq Eng 10:1819–1832
Maxfield C (2008) Bebop to the boolean bogie. Newnes, UK
Motosaka M, Mitsuji K (2012) Building damage during the 2011 off the Pacific coast of Tohoku Earthquake. Soils Found 52:929–944
Normalu Barrisol SAS (2014) Barrisol Stretch ceilings and walls. Normalu Barrisol SAS website. http://en.barrisol.com/products-ceilings.htm. Accessed 6 Feb 2014
Ono K, Miki M, Yoshimi M, Nishimoto T, Omi T, Adachi H, Akita M, Kasahara Y (2012) Development of an intelligent lighting system using LED ceiling lights into an actual office. Electron Comm Jpn 95:54–63
OSRAM light AG (2014) LEAF-Ceiling LED OSRAM website. http://www.osram.com. Accessed 6 Feb 2014
Sing Chan Y, Lee S (2011) Spacing optimization of high power LED arrays for solid state lighting. J Semicond 32:014005
Taguchi T (2008) Present status of energy saving technologies and future prospect in white LED lighting. IEEJ Trans Elec Electron Eng 2:21–26
Taiyo Kogyo Co. Ltd. (2014) Fabric ceiling (Maku Tenjyo) Taiyo Kogyo website. http://www.taiyokogyo.co.jp/maku_tenjyo/. Accessed 6 Feb 2014
Takamatsu S, Kobayashi T, Shibayama N, Miyake K, Itoh T (2012) Fabric pressure sensor array fabricated with die-coating and weaving techniques. Sens Actuators A 184:57–63
Takamatsu S, Yamashita T, Itoh T (2013) Development of reel to reel microchip mounting system for fabrication of meter-long LED lighting tapes. Microsyst Technol. doi:10.1007/s00542-013-1925.6
Takewaki I, Murakami S, Fujita K, Yoshitomi S, Tsuji M (2011) The 2011 off the Pacific coast of Tohoku earthquake and response of high-rise buildings under long-period ground motions. Soil Dyn Earthq Eng 31:1511–1528
Toshiba Lighting and Technology Corporation Co. (2014) LED light equipment (E-CORE LED) Toshiba lighting website. http://www.tlt.co.jp/tlt/index_e.htm. Accessed 6 Feb 2014
Acknowledgments
This research was conducted as an undertaking of the New Energy and Industrial Technology Development Organization (NEDO) Project entitled “Development of Manufacturing Technologies for Hetero-Functional Integrated Devices” (BEANS Project).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Takamatsu, S., Yamashita, T. & Itoh, T. Meter-scale large area LED-embedded light fabric for the application of fabric ceilings in rooms. Microsyst Technol 21, 1209–1217 (2015). https://doi.org/10.1007/s00542-014-2174-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00542-014-2174-z