Resin composition for nano concave-convex structure, transparent member for monitor of vehicle navigation device and transparent member for cover of vehicle meter using same composition

A transparent cover of a vehicle navigation device comprising a nano concave-convex structure body having a transparent substrate and a cured product layer laminated on top of the transparent substrate, wherein the cured product layer has a nano concave-convex structure on the surface of the cured product layer and contains a cured product of a resin composition,

• wherein the water contact angle of the nano concave-convex structure on the surface of the cured product layer after weather resistance testing is less than 25°,
• wherein the resin composition comprising a polymerization reactive monomer component which, when a total amount of all monomers within the polymerization reactive monomer component is deemed to be 100 parts by mass, comprises 50 to 95 parts by mass of a tetrafunctional (meth)acrylate monomer (A) having 4 radical polymerizable functional groups per molecule, 5 to 35 parts by mass of a difunctional (meth)acrylate monomer (B) having 2 radical polymerizable functional groups and a polyalkylene glycol structure per molecule, in which a total number of repeating units of the alkylene glycol structure that exist in a single molecule is from 4 to 25, and not more than 15 parts by mass of a monofunctional (meth)acrylate monomer (C) which is copolymerizable with the tetrafunctional (meth)acrylate monomer (A) and the difunctional (meth)acrylate monomer (B), and has one radical polymerizable functional group per molecule,
• and further comprising, per 100 parts by mass of the polymerization reactive monomer component, 0.01 to 10 parts by mass of an active energy ray polymerization initiator (D), 0.01 to 3 parts by mass of a release agent (E), and 0.01 to 3 parts by mass of a lubricant (F),
• wherein the release agent (E) is at least one polyoxyethylene alkyl phosphate ester compound represented by general formula (I) shown below:
• wherein R1 represents an alkyl group, m represents an integer of 1 to 20, and n represents an integer of 1 to 3.