NOVELTY - The shield has a heat shield part comprising multiple L-shaped profiles that are fixed to lower guide beams (2, 10) when the profiles are in mounted condition. The profiles are located close to a longitudinal side of the guide beams when the profiles are in assembled state. A space is formed between the mounting state of the profiles and the guide beams. Multiple magnetic elements i.e. permanent magnets, are utilized for magnetic attachment of the profiles with the guide beams. Multiple spacers are arranged in the assembled state of the profiles.    USE - Heat shield for shielding a bottom guide bar of an incident solar heat sliding gate (claimed) i.e. cantilevered sliding gate.    ADVANTAGE - The lower guide beams can be warped by closing a sliding gate in a line of sensors, so that closure can be stopped, thus preventing opening and closing of the sliding gate during curling of the lower guide beams. The lower guide beams are formed with an opening, so that incident sunlight of the guide beam can be distributed over an entire guide bar in an easy manner. The shield comprises a top guide bar that is small in construction than the lower guide beams, so that large temperature difference can be eliminated over the guide beams. The shield is inexpensive, easy to handle, less in labor intensity and simple to install, and can perform buckling of the lower guide beams of the sliding gate in an efficient manner. The shield can be magnetically attached to the guide beams by utilizing magnets, so that production of the sliding gate is not adjusted, thus easily and smoothly attaching a layman in the guide beams during alignment of the sliding gate.    DETAILED DESCRIPTION - The profiles are made of a plastic material and a heat absorbent material. The guide beams are made of metal.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a heat shield.    Cantilevered sliding gate (1)    Lower guide beams (2, 10)    Fill-in elements (11)    Roller blocks (12)