The present invention relates to an LED light emitter, comprising: a plurality of substrates on which a plurality of LEDs, which comprise at least two from a red (R) LED, a green (G) LED, a blue (B) LED, and an infrared (IR) LED, are formed in a line； a plurality of connectors, which are arranged on each of the plurality of substrates, for electrically connecting the plurality of substrates； a covering portion, which covers the plurality of substrates and the plurality of connectors, is provided with a plurality of holes for radiating to the exterior light that is emitted from the plurality of LEDs, and which comprises a soft material for covering a body part； a controller portion for controlling at least one of an on/off frequency, a driving current, and a driving time of the plurality of LEDs which are arranged on the plurality of substrates, through the plurality of connectors； and a power portion for supplying DC power to the control portion for driving the plurality of LEDs, thereby aligning the plurality of substrates, which have a narrow width and a long length and on which LEDs are mounted, and wrapping same with the soft material, so that the LED light emitter easily wraps around a body part, and wearing comfort is provided when irradiating light on one body part (for example, the wrist area), thereby increasing convenience of use, as well as effectively activating metabolism of the body and mitigating pain by conveniently absorbing light having various wavelengths into the body part.La présente invention concerne un émetteur de lumière à LED comprenant : une pluralité de substrats sur lesquels sont alignées plusieurs LED, qui comprennent au moins deux LED parmi une LED rouge (R), une LED verte (G), une LED bleue (B), et une LED infrarouge (IR) ； une pluralité de connecteurs, qui sont disposés sur chaque substrat de la pluralité de substrats, pour connecter électriquement la pluralité de substrats ； une partie de recouvrement, qui recouvre la pluralité de s
