Radiation heat-shield for solar system

A radiation shield assembly for a solar system of the type comprising a reflector with a heat collecting element received at the focus of the reflector,

• said heat collecting element comprising a coated tube with a longitudinal axis extending between a first end and a second end;
• the coated tube being received within a coaxial evacuated enveloping glass tube;
• said enveloping glass tube being secured at respective ends thereof to the coated tube by a coaxially deformable connector element having a distant end thereof sealingly secured to the coated tube and a proximal end thereof sealingly attached to a respective end of the enveloping glass tube by a glass to metal connection;
• wherein said radiation shield assembly extends over the connector element and over the glass to metal connection;
• said radiation shield assembly is secured to the connector element by support legs engaging the connector element adjacent the proximal end, and
• further comprising an internal shield member extending between the coated tube and the enveloping glass tube adjacent the glass to metal connection zone;
• said internal shield member intersecting the longitudinal axis.