The present invention is an idea IP designed to solve the problem of conference room psychology. Prior to the invention described above, a lighting device, a psychological tool, and the like were invented. In solving this task, 1. Convenience 2. Practicality 3. Verification in terms of sustainability and discussion of the same contents in color meeting rooms to verify their effectiveness. Unlike the existing invention, it is possible to use the three primary colors and light gradients so that the user can easily use the appropriate ones for the meeting according to the modern society.
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