NOVELTY - The alignment structure consists of intermediate layer (2) interposed between alignment boards (1) comprising plastic or glass plate. The layer (2) contains microparticles (11) of tungstic acid compound and/or its composite having solar radiation shielding function.    USE - For solar radiation shielding, window material for motor vehicles and aircraft, and for construction.    ADVANTAGE - The alignment structure having excellent solar radiation shielding characteristic is manufactured economically.    DETAILED DESCRIPTION - The alignment structure consists of intermediate layer (2) interposed between alignment boards (1) comprising plastic or glass plate. The layer (2) contains microparticles (11) of tungstic acid compound and/or its composite having solar radiation shielding function. The tungstic acid compound is of formula: WyOz, where z/y is between 2-3.    The composite tungstic acid compound is of formula: MxWyOz, where M is hydrogen, helium, alkali metal, alkaline earth metal or rare earth metal, such as magnesium, zirconium, chromium, manganese, iron, ruthenium, cobalt, rhodium, iridium, platinum, nickel, palladium, copper, silver, gold, zinc, cadmium, aluminum, gallium, indium, silicon, germanium, tin, lead, antimony, boron, fluorine, phosphorus, sulfur, selenium, bromine, tellurium, titanium, niobium, vanadium, molybdenum and tantalum, x/y=0.001-1 and z/y is between 2-3 (including 3).    The microparticles further contains oxide of vanadium, antimony, niobium, tantalum, tungsten, zirconium, fluorine, zinc, aluminum, titanium, lead, gallium, ruthenium, phosphorus, germanium, indium, tin, lanthanum, cerium, praseodymium, gadolinium, terbium, dysprosium, holmium, yttrium, samarium, europium, erbium, terbium, strontium and/or calcium.    The plastic is film of polycarbonate resin, acrylic resin or polyethylene terephthalate resin.    The intermediate layer has intermediate film (12) containing polyvinyl butyral resin or ethylene vinyl acetate copolymer.    DESCRIPTION OF DRAWING(S) - The figure shows the sectional drawing of alignment structure of solar radiation shielding. (Drawing includes non-English language text).    alignment board (1)    intermediate layer (2)    microparticles having solar radiation shielding function (11)    intermediate film (12)