Light therapy device

A method for disinfection treatment of fungal, bacterial and viral infections in or on a subject, the method comprises:

• (i) providing a base unit and a diffuser cap provided with a reflector element connected to the base unit, where the base unit has an inner housing, to the upper side of which at least one light source is connected, in the inner housing there is a power supply unit, under which there is a control unit, a switch is positioned on the lower part of the inner housing, breaking through the wall thereof,
• the light source has two electrical wires:
• a short leg, which is connected to the power supply unit, and a long leg, which ends between the switch and the control unit, the long leg is provided with an insulating element, wherein the inner housing is surrounded by an outer housing, on the outer housing there are at least two connecting portions, the connecting portions include an L-shaped slot having a vertical arm and a horizontal arm, the vertical arm and the horizontal arm are the continuation of each other, and
• the diffuser cap also includes connecting elements connected to the lower part of the reflector element, and the connecting elements are provided with a locking element comprising at least one pin, the locking element fixes the diffuser cap to the connecting portion of the base unit;
• and
• (ii) exposing the subject to the light source emitting light in a wavelength range of 401 to 490 nm with an intensity between 1 and 2000 J/cm2 for a period of time sufficient to kill microbial cells in or on the subject without DNA damage to the subject.