公开(公告)号：EP1923885A4

公开(公告)日：2008-09-03

申请号：EP06731740

申请日：2006-04-13

申请人： NOK CORP

发明人： KANAYAMA TOMOKI ,  TAKAOKA SHIN ,  SEKI SHOTA

IPC分类号： G11B21/12 ,  G11B5/54 ,  G11B21/22

CPC分类号： G11B21/22 ,  G11B5/54 ,  G11B21/12

摘要： In a plate insert type lamp (1) having a resin lamp body (2) and a metal reinforcement plate (12) buried in the lamp body (2) by insert molding, a breakage prevention structure of the lamp being capable of suppressing the occurrence of breakage in a resin near the peripheral edge part of the plate (12) due to heat shrinkage without increasing the wall thickness of the resin near the peripheral edge part of the plate (12) or without reducing the thickness of the plate (12). A part or all of the peripheral edge parts (12a), (12b), (12c), and (12d) of the reinforcement plate (12) are exposed from the lamp body (2) to the front surface beforehand to prevent the resin near the peripheral edge parts (12a), (12b), (12c), and (12d) of the reinforcement plate (12) from being broken due to heat shrinkage. The portions of the plate to be exposed are clearance portions (8) between a plurality of disk insertion parts (4) formed at one of four sides of the lamp body (2) and/or the peripheral edge parts of the lamp body (2) at its other three sides.