In outdoor spaces, infants in strollers are significantly affected by thermal radiation from the ground surface due to their proximity to it. Infants are at increased risk of heat stroke while riding in a stroller. Infants are less thermally adapted to their environment and can consequently be considered to need protective measures against thermal environments. In order to treat strollers as clothing, in the present study, experiments were conducted to clarify the thermal environment of an infant riding in a stroller. Using an infant thermal manikin, the clothing area factor fcl and the clothing thermal insulation I cl of the stroller were determined. The stroller clothing area factor fcl was 3.21 and the stroller clothing thermal insulation I cl was 0.47 clo. Therefore, it can be inferred that strollers have a pronounced effect on the body heat balance between an infant and their environment.
Givoni, B., Noguchi, M., Saaroni, H., Pochter, O., Yaacov, Y., Feller, N. and Becker, S. (2003) Outdoor Comfort Research Issues. Energy and Buildings, 35, 77-86. https://doi.org/10.1016/S0378-7788(02)00082-8
Oliveira, S. and Andrade, H. (2007) An Initial Assessment of the Bioclimatic Comfort in an Outdoor Public Space in Lisbon. International Journal of Biometeorology, 52, 69-84. https://doi.org/10.1007/s00484-007-0100-0
Eliasson, I., Knez, I., Westerberg, U., Thorsson, S. and Lindberg, F. (2007) Climate and Behaviour in a Nordic City. Landscape and Urban Planning, 82, 72-84. https://doi.org/10.1016/j.landurbplan.2007.01.020
Nikolopoulou, M. and Steemers, K. (2003) Thermal Comfort and Psychological Adaptation as a Guide for Designing Urban Spaces. Energy and Buildings, 35, 95-101. https://doi.org/10.1016/S0378-7788(02)00084-1
Nikolopoulou, M. and Lykoudis, S. (2006) Thermal Comfort in Outdoor Urban Spaces: Analysis across Different European Countries. Building and Environment, 41, 1455-1470. https://doi.org/10.1016/j.buildenv.2005.05.031
Ishii, J., Horikoshi, T., Kurazumi, Y., Nagano, K. and Fukagawa, K. (2008) A Field Survey of Thermal Comfort in Outdoor Space. ICB2008 18th International Congress of Biometeorology, Tokyo, 22-26 September 2008, 1-4.
Kurazumi, Y., Tsuchikawa, T., Matsubara, N., Kondo, E. and Horikoshi, T. (2011) Evaluation of Enhanced Conduction-Corrected Modified Effective Temperature ETFe as the Outdoor Thermal Environment Evaluation Index. Energy and Buildings, 43, 2925-2937. https://doi.org/10.1016/j.buildenv.2005.05.031
Kurazumi, Y., Kondo, E., Ishii, J., Sakoi, T., Fukagawa, K., Bolashikov, Z.D., Tsuchikawa, T., Matsubara, N. and Horikoshi, T. (2013) Effect of the Environmental Stimuli upon the Human Body in Winter Outdoor Thermal Environment. Journal of Environmental and Public Health, 2013, Article ID: 418742. https://doi.org/10.1155/2013/418742
Kurazumi, Y., Ishii, J., Fukagawa, K. and Aruninta, A. (2015) The Influence of Tropical Urban Climate upon the Human Body. International Joint-Conference of SENVAR-iNTA-AVAN 2015 (SIA 2015), Johor, 24-26 November 2015, 105-114.
Kurazumi, Y., Ishii, J., Fukagawa, K., Kondo, E. and Aruninta, A. (2016) Ethnic Differences in Thermal Responses between Thai and Japanese Females in Tropical Urban Climate. American Journal of Climate Change, 5, 52-68. https://doi.org/10.4236/ajcc.2016.51007
Kurazumi, Y., Ishii, J., Fukagawa, K., Kondo, E., Nyilas, A. and Aruninta, A. (2017) Seasonal Differences of Psychological and Physiological Responses in Tropical Urban Climate. Health, 9, 896-920. https://doi.org/10.4236/health.2017.96064
Kurazumi, Y., Kondo, E., Fukagawa, K., Yamato, Y., Tobita, K. and Tsuchikawa, T. (2019) Effects of Outdoor Thermal Environment upon the Human Responses. Engineering, 11, 475-503. https://doi.org/10.4236/eng.2019.118034
Kurazumi, Y., Kondo, E. and Fukagawa, K. (2020) The Influence of Environmental Stimuli upon the Human Body in Summer. Health, 12, 781-803. https://doi.org/10.4236/health.2020.127057
Guttmann, L., Silver, J. and Wyndhum, C.H. (1958) Thermoregulation in Spinal Man. Journal of Physiology, 142, 406-419. https://doi.org/10.1113/jphysiol.1958.sp006026
Iriki, M. and Asaki, K. (1992) Koureisya no taion cyosetu. Journal of the Society of Biomechanisms Japan, 16, 31-37. (In Japanese)
Tsuchikawa, T., Kurazumi, Y., Yamato, Y., Sakamoto, H., Matsubara, N. and Horikoshi, T. (2008) Measurements of the Effective Radiation Area and Configuration Factors for the Human Body in His Wheelchair. Journal of Environmental Engineering (Transactions of AIJ), 625, 321-326. https://doi.org/10.3130/aije.73.321
Iriki, M. (1995) Taion cyosetu no shikumi. Bunkodo Co., Ltd., Tokyo. (In Japanese)
Nakayama, A. and Iriki, M. (1987) Shin seirikagaku taikei 22, Enerugi taisya Taion cyosetu no seirigaku. Igaku-Shoin Ltd., Tokyo. (In Japanese)
Kurazumi, Y., Sakoi, T., Yamashita, K., Fukagawa, K., Kondo, E. and Tsuchikawa, T. (2019) Thermal Manikin of Infant. Engineering, 11, 735-754. https://doi.org/10.4236/eng.2019.1111048
Meeh, K. (1879) Ober flächenmessungen des menschlichen körpers. Zeitschrift für Biologie, 15, 425-458.
Lissauer, W. (1903) Ueber oberflächenmessungen un säuglingen und ihre bedeutung für den nahrungsbedarf. Jahrbuch für Kinderheilkunde und Physische Erziehung. N.F., 58, 392-411.
Otani, K. (1907) Nihon syoni no taihyo menseki sokutei. Tokyo igakkai zasshi, 21, 89-117. (In Japanese)
Lassabliére, P. (1910) Evaluation de la surface cutanée chez le jeune enfant. Comptes rendus hebdomadaires des séances et mémoires de la société de biologie, 59, 339-341.
Klein, A.D. and Scammon, R.E. (1930) The Regional Growth in Surface Area of the Human Body in Prenatal Life. Proceedings of the Society for Experimental Biology and Medicine, 27, 463-466. https://doi.org/10.3181/00379727-27-4809
Oshiro, C. and Tagawa, T. (1936) Nihon nyuji no taihyo menseki sokutei seiseki. Nika zasshi, 43, 604-616. (In Japanese)
Ochi, T. and Higuchi, T. (1935) On the Body Surface Measurements and Normal Standard of Basal Metabolism of New Born Infants. Keio igaku, 15, 709-725. (In Japanese)
Kawabata, M. (1940) Isshin taihyo menseki keisan shiki. Nihon seiri gakkai zasshi, 5, 245-254. (In Japanese)
Miyajima, T. (1960) Nihon jin no taihyo menseki ni kansuru kenkyu, Dai 13 nyuji no taihyo menseki oyobi sono sansyutu shiki. Nagasaki sogo kosyu eiseigaku zasshi, 9, 484-499. (In Japanese)
Tsuchikawa, T., Kondo, E. and Kurazumi, Y. (2019) Solar Radiation Area Factors of the Infant on Buggy. Journal of Human and Living Environment, 26, 87-92.
Fukazawa, T., Ikeda, S., Kim, S. and Tochihara, Y. (2009) Seasonal Clothing Variation and Thermal Resistance of Clothing Ensembles of Infants Living in Kyushu. Journal of Home Economics of Japan, 60, 635-643.
Kurazumi, Y., Fukagawa, K., Sakoi, T., Naito, A., Hashimoto, R., Kondo, E. and Tsuchikawa, T. (2021) Clothing Area Factor for Typical Seasonal Clothing of Infant. Health, 13, 378-392. https://doi.org/10.4236/health.2021.134031
Kurazumi, Y., Fukagawa, K., Sakoi, T., Naito, A., Imai, M., Hashimoto, R., Kondo, E. and Tsuchikawa, T. (2021) Clothing Thermal Insulation for Typical Seasonal Clothing of Infant with Infant Thermal Manikin. Engineering, 13, 372-387. https://doi.org/10.4236/eng.2021.137027
Kurazumi, Y., Tsuchikawa, T., Matsubara, N. and Horikoshi, T. (2008) Effect of Posture on the Heat Transfer Areas of the Human Body. Building and Environment, 43, 1555-1565. https://doi.org/10.1016/j.buildenv.2007.09.001
Kurazumi, Y., Hamanaka, K. and Kobayashi, K. (2005) Optimum Thermal Comfort Zone in Floor Cooling Condition. Transactions of the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan, 99, 31-41.
Kurazumi, Y. and Kobayashi, K. (2006) Thermal Comfort Zone in Floor Cooling. Transactions of the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan, 114, 39-49.
Kurazumi, Y., Matsubara, N., Nagai, H., Furukawa, N., Fujiwara, M., Ue, A., Ueki, Y. and Yamamoto, S. (1999) The Effect of Conductive Heat Exchange for Evaluation of the Thermal Environment on the Human Body. Transactions of the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan, 72, 25-36.
Kurazumi, Y., Tsuchikawa, T., Kakutani, K., Yamato, Y., Torii, T., Matsubara, N. and Horikoshi, T. (2004) Mean Skin Temperature Taking into Account Convective Heat Transfer Areas, Calculation Method of Seiza Sitting, Cross-Legged Sitting, Sideway Sitting, Both-Knees-Erect Sitting, Leg-Out Sitting, Lateral and Supine Positions. Journal of Environmental Engineering (Transactions of AIJ), 585, 19-26. https://doi.org/10.3130/aije.69.19_2
Kurazumi, Y. and Tsuchikawa, T. (2004) Progress in Studies on Specific Data Related to Heat Balance Equation of the Human Body. Japanese Journal of Biometeorology, 41, 109-128.
Kurazumi, Y. (2008) Evaluation of Living Space Thermal Environment. ICB2008 18th International Congress of Biometeorology, Tokyo, 22-16 September 2008, 1-4.
Kurazumi, Y., Tsuchikawa, T., Kondo, E., Horikoshi, T. and Matsubara, N. (2010) Conduction-Corrected Modified Effective Temperature as the Indices of Combined and Separate Effect of Environmental Factors on Sensational Temperature. Energy and Buildings, 42, 441-448. https://doi.org/10.1016/j.enbuild.2009.10.012
Kurazumi, Y., Tsuchikawa, T., Kondo, E., Yamato, Y., Tobita, K., Fukagawa, K., Horikoshi, T. and Matsubara, N. (2009) Validity and Evaluation Method of Combined Thermal Environmental Factors upon the Human Body. Japanese Journal of Biometeorology, 46, 121-137.
Nihon 3B Scientific Inc. (2021) Nurse Training Baby, Asian Body Care Model Male, W17002. https://www.3bs.jp/simulator/child/w17002-w17003.htm
Ministry of Health, Labour and Welfare, Japan (2021) National Growth Survey on Preschool Children. https://www.mhlw.go.jp/toukei/list/dl/73-22-01.pdf
SG Standard (2017) CPSA001 SG Standard for Stroller. Consumer Product Safety Association, Tokyo. https://docs.wixstatic.com/ugd/f19996_be389277c3fc49e69147e94c49ebb973.pdf
European Standards (2018) EN 1888-1:2018—Child Care Articles—Wheeled Child Conveyances—Part 1: Pushchairs and Prams. European Standardization Organizations, European Union.
ASTM Standards (2019) ASTM F-833 Standard Consumer Safety Performance Specification for Carriages and Strollers. ASTM International, West Conshohocken.
British Standards (1997) British Standards BS7409 Specification for Safety Requirements for Wheeled Child Conveyances. British Standards Institution, London.
Yamato, Y., Kurazumi, Y., Hashida, M., Torii, T. and Matsubara, N. (2003) Difference of Postures on Thermal Insulation of Clothing Ensembles. Journal of Human and Living Environment, 10, 108-116.
Yamato, Y., Kurazumi, Y., Ishii, J., Fukagawa, K., Tobita, K., Matsubara, N. and Shibata, Y. (2010) The Influence of Extra Space of Clothing for Human Body on Thermal Insulation of Clothing Ensembles, Experimental Study on Woman’s Clothes. Journal of the Japan Research Association for Textile End-Uses, 51, 281-292.
Kurazumi, Y., Horiguchi, A., Sakamoto, H. and Matsubara, N. (2006) The Influence of Postures on Thermal Insulation of Clothing. Journal of Environmental Engineering (Transactions of AIJ), 605, 63-70. https://doi.org/10.3130/aije.71.63_3
Olesen, B.W., Silwinska, E., Madsen, T.L. and Fanger, P.O. (1982) Effect of Body Posture and Activity on the Thermal Insulation of Clothing; Measurements by a Movable Thermal Manikin. ASHRAE Transactions, 88, 791-805.
ISO (2007) ISO 9920:2007 Ergonomics of Thermal Environment-Estimation of the Thermal Insulation and Evaporative Resistance of a Clothing Ensemble. International Organization for Standardization, Geneva.
Tsuchikawa, T., Sakamoto, H., Kurazumi, Y., Matsubara, N. and Yamato, Y. (2006) Kurumaisu jyousya sya to kankyo tono netukoukann ni kansuru kisoteki kennkyuu. Hausklima Research, 32, 33-40. (In Japanese)
Seppanen, O., McNall, P.E. and Munson, D.M. (1972) Thermal Insulating for Typical Indoor Clothing Ensembles. ASHRAE Transactions, 78, 120-130.
P.T. Teknik (2021) Thermal Manikin. https://pt-teknik.dk/products/thermal-manikins
Oketani, Y. and Tokura, H. (1979) Circadian Rhythms of Rectal and Skin Temperatures in an Infant. Journal of Home Economics of Japan, 30, 568-570.
Whitton, J.T. and Everall, J.D. (1973) The Thickness of the Epidermis. British Journal of Dermatology, 89, 467-476. https://doi.org/10.1111/j.1365-2133.1973.tb03007.x
Fujii, T. and Imura, H. (1972) Natural-Convection Heat Transfer from a Plate with Arbitrary Inclination. International Journal of Heat and Mass Transfer, 15, 755-764. https://doi.org/10.1016/0017-9310(72)90118-4
The Japan Society of Mechanical Engineers (1986) JSME Data Book: Heat Transfer. 4th Edition, Maruzen, Tokyo.
Gagge, A.P., Burton, A.C. and Bazett, H.C. (1941) A Practical System of Units for the Description of the Heat Exchange of Man with His Environment. Science, 94, 428-430. https://doi.org/10.1126/science.94.2445.428