US Patent 10004919 Phototherapy patch with increased thermal insulation

A light emitting device for application near mammal tissue includes a flexible body having a front surface for facing the mammal tissue and an opposing back surface. The flexible body accommodates at least one light source which is arranged for irradiating an irradiation area of the mammal tissue. A thermally insulating layer covers the back surface of the flexible body. The thermally insulating layer has a larger surface area than the flexible body.