visor 10 may be readily clamped on it in the manner shown in fig1 as shown clamp means 12 comprises a u shaped configuration with the flat surface of its leg 15 which may be a rectangular configuration secured by gluing or otherwise to the juxtapositioned flat surface 19 of add on visor 10 its other leg 16 is bent to cause its free end 20 to be biased and lie close to leg 15 thus the spring biased effect of clamp means 12 causes the free end 20 of leg 16 to frictionally engage between it and leg 15 the lower portion of the conventional vehicle mounted sun visor 18 as diagraphically shown in fig1 in order to grip the conventional sun visor 18 over an uneven area the free end of leg 16 of clamp means 12 is provided with a pad 21 which extends laterally of the longitudinal length of leg 16 this pad 21 on the end of leg 16 also serves as a pivot point so that the add on visor 10 may be pivotally rotated about the conventional sun visor at any point along its length at which the add on visor 10 is positioned fig5 7 disclose a modification of the add on sun visor 10 shown in fig1 4 this modification comprises an add on sun visor 22 having a flat shield or panel 23 similar to device 10 except that its clamp means 24 is formed integral with panel 23 as shown one leg 25 of the clamp means 24 is formed like leg 16 of clamp means 12.