To address the common overemphasis on technology integration over elderly user needs in smart lighting design, the work aims to develop an elderly-friendly lighting strategy based on physiological rhythms, behaviors, and psychological needs of the elderly, to enhance the comfort, safety, and health value of their home lighting environment. Through literature review, the core lighting environment needs of the elderly corresponding to their physiological decline were sorted out. With the high-risk scenario of nighttime toileting as the entry point, the activity trajectories and potential risks of the elderly in a typical home environment were deeply analyzed through user journey mapping and behavioral observation. Integrated with theories of healthy lighting and human factors engineering, design strategies were proposed and applied to develop an integrated smart floor light combining rhythm adaptation, behavior assistance, and non-intrusive interaction. The design was further verified through scenario simulation. A framework of elderly-friendly design strategies for smart home lighting was proposed, with health, safety, and usability as the core concepts, including non-intrusive safety protection strategies, human-factor optics and circadian health strategies, inclusive interaction and scenarization strategies, as well as systematic integration and expansion strategies. Smart lighting is redefined as a light medium for the elderly's home health. The established design strategy system can effectively guide the innovation of aging-oriented smart lighting products, and provides an important theoretical basis and practical path for the transformation of elderly-friendly light environment design from general lighting to active health intervention.
Key words
elderly-friendly design /
smart lighting /
elderly users /
home-based elderly care /
integrated floor light
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