Abstract: A light head for use in relining a pipe, the light head may include a proximal end cap, a distal end cap, at least one body, at least one LED-plate, and at least one spacer. The proximal end cap may include a fluid inlet. The body may be arranged between the proximal end cap and the distal end cap. The body may include a longitudinal passage extending from the proximal end cap to the center of the body. At least one lateral channel may extend from the longitudinal passage to an outlet. The LED-plate may include at least one light emitting diode. The spacer may be disposed between the LED-plate and the body. The longitudinal passage may be configured to receive fluid from the inlet such that the fluid hits the LED-plate.

Abstract: A pipe lining tool comprising a bifurcation lining unit comprising a partly flexible main body having an extension in a longitudinal direction and a radial direction. The main body comprises an envelope surface, an envelope opening, and a main body extendable portion. The bifurcation lining unit comprises an air pressure unit. The main body extendable portion being configured to be extended when subject to air pressure from the air pressure unit. The main body comprising a first light emitting diode. The improved light source can be controlled both in order to give sufficient light in a specific wavelength range for curing a liner inside a main pipe, but also for controlling heat emitted by a light source.

Abstract: A light head for use in relining a pipe is disclosed. The light head comprises a proximal end cap, a distal end cap, and at least one body between the proximal end cap and the distal end cap. The proximal end cap also has an air inlet. The body has a longitudinal hole extending from the proximal end cap through the centre of the body towards the distal end cap and at least one air channel extending radially from the longitudinal hole to a radial air outlet. The longitudinal hole is configured to receive air from the air inlet such that in use air from the air inlet passes through the body and exits at the radial air outlet. The body is configured for supporting at least one light emitting diode on the periphery of the body in order to emit light radially from the light head towards the pipe.