| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To have a lightweight and sufficient rigid and precise frame structure of a rear projection display device. <P>SOLUTION: The frame structure comprises the fixture of a bottom frame 11, right and left side frames 12, 13, and a top frame 14 molded of extrusion materials of aluminum materials with a fixed screw 10a and a spring pin 10b so as to have respective desired cross sectional shapes, composing a screen frame provided with a rectangular screen 3, and the installation of the bottom frame 11 and the right and left side frames 12, 13 with right and left frame supports 15, 16 with the fixed screws and rivets 10c in the form of a diagonal brace. The lower part of a screen 3 and an optical unit 50 are positioned to the bottom frame 11 and the upper part of the screen 3 and a projection mirror 30 are positioned to the top frame 14. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
