to be inserted into the tubes 350 and 352 of u shaped bracket 330 at their other ends the bars 370 372 are pivotably coupled to second bars or rods 390 392 by means of brackets 374 and pins 376 the bars 390 392 have their adjacent ends 394 396 pivotably coupled together by means of a bracket 398 and pin 399 which may be removable if desired the end 396 of bar 392 can be inserted into the adjacent end 394 of bar 390 with the linkages and parts described the various bars can be pivoted with respect to each other so that they form a rectangular frame which when coupled to the u shaped bracket 330 can extend outwardly away from and above the tv viewing screen and when this rectangular frame is covered with a black canvas 400 shown only schematically it shields the tv screen from the ambient light and improves viewability for the audience the shielding canvas is arranged so that it can be buttoned to the console at the sides thereof and it can be stretched to fill the space between the front of the console and the door frame of the van the schematic diagram of fig1 shows typical equipment which can be mounted on the console and the manner in which the.