| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting device capable of eliminating a waste of a material and attaining low cost. <P>SOLUTION: Each packing member 60 includes a first end section which is thin-walled by preparing a level difference on an outer peripheral section and has a contact surface 603 on the outer peripheral section, and a second end section which is thin-walled by preparing a level difference on an inner peripheral section and has a contact surface 613 on the inner peripheral section. Further the first end section has a level difference surface 602 in a radial direction for demarcating the level difference, and the second end section has a level difference surface 612 in a radial direction for demarcating the level difference. Both end sections are brought into contact with each other while their positions are adjusted along a peripheral direction since both contact surfaces 603, 613 are brought into contact with each other by radially arranging the first end section of one packing member 60 at an inner side and by radially arranging the second end section of the other packing member 60 at an outer side. <P>COPYRIGHT: (C)2013,JPO&INPIT |
