Flexible circuit board for mounting light emitting element, illumination apparatus, and vehicle lighting apparatus

Abstract

A flexible circuit board 3 a for mounting a light emitting element has base films 31 a and 31 b , a wiring pattern 32 formed on a surface of the base films 31 a and 31 b , and the cover films 33 a and 33 b that covers the base films 31 a and 31 b and the wiring pattern 32 . At least one of the base film and the cover films 33 a and 33 b have a substrate 331 and 331 a comprising a metal. The cover film 33 a and 33 b have such surface properties as to produce specular reflection or diffuse reflection of light or has substantially white reflecting films 36 and 333 on a surface of the cover film.

1 - 19 . (canceled) 
     
     
         20 . A flexible circuit board for mounting a light emitting element, comprising:
 a base film having a substrate made of a metal and insulating protective films disposed on opposite sides of the substrate;   a wiring pattern formed on a surface of the base film; and   a cover film having a substrate made of a resin material and a substantially white reflecting film formed on the resin material, the cover film covering the wiring pattern.   
     
     
         21 . The flexible circuit board for mounting a light emitting element according to  claim 20 , wherein the resin material is a polyimide film. 
     
     
         22 . The flexible circuit board for mounting a light emitting element according to  claim 20 ,
 wherein the substantially white reflecting film is a film having a thickness in a range of 10 μm to 75 μm and containing titanium oxide.   
     
     
         23 . The flexible circuit board for mounting a light emitting element according to  claim 20 ,
 wherein the substantially white reflecting film is a thermosetting solder resist film.   
     
     
         24 . An illumination apparatus, comprising:
 a flexible circuit board for mounting a light emitting element, the flexible circuit board having a base film having a substrate made of a metal and insulating protective films disposed on opposite sides of the substrate, a wiring pattern formed on a surface of the base film, and a cover film having a substrate made of a resin material and a substantially white reflecting film formed on the resin material, the cover film covering the wiring pattern; and   a light emitting element mounted on said flexible circuit board for mounting a light emitting element.