POROUS RESIN SHEET, REFLECTOR, AND LIGHTING APPARATUS AND DISPLAYING APPARATUS BOTH USING THE SAME

PROBLEM TO BE SOLVED: To prepare a porous resin sheet realizing a lighting apparatus and a displaying apparatus having high brightness, exhibiting high reflectance and having high heat resistance and heat-releasing property, and to provide the lighting apparatus and the displaying apparatus each using a reflectance body of the sheet. SOLUTION: The porous resin sheet is obtained by expanding preferably a resin sheet containing a polyolefin resin and an inorganic filler forming a specific composition. The reflectance body is obtained by using the porous resin sheet. The reflectance body is processed according to application of lamp reflector, or the like, and used for the lighting apparatus and the displaying apparatus. Since the porous resin sheet has a structure having high permeability and excellent heat-releasing property, the porous resin sheet can be used in combination with a light source having high output and be used even under high-temperature environment. COPYRIGHT: (C)2005,JPO&NCIPI