Invention Grant
US09122137B2 Housing for projection display device and projection display device including housing for projection display device
有权
用于投影显示装置和投影显示装置的壳体，包括用于投影显示装置的壳体
- Patent Title: Housing for projection display device and projection display device including housing for projection display device
- Patent Title (中): 用于投影显示装置和投影显示装置的壳体，包括用于投影显示装置的壳体
-
Application No.: US14095473Application Date: 2013-12-03
-
Publication No.: US09122137B2Publication Date: 2015-09-01
- Inventor: Shigekazu Yamagishi , Masato Tanaka , Shu Namba
- Applicant: Panasonic Corporation
- Applicant Address: JP Osaka
- Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Hamre, Schumann, Mueller & Larson, P.C.
- Priority: JP2012-267140 20121206; JP2013-218858 20131022
- Main IPC: G03B21/14
- IPC: G03B21/14 ; G02B27/00 ; G02B7/02 ; G02B26/00 ; G02B27/10 ; G02B27/14 ; G03B5/04
Abstract:
The shield includes: a first dust-proof wall that is shiftable integrally with the projection lens, and has width a1 projecting from the projection lens to an A side; and a second dust-proof wall that is slidable within a range regulated by the regulator, and has length b1 on the A side. When the second dust-proof wall has length c2 shiftable to a B side, the projection lens and the second dust-proof wall form a space having length d1 on the A side, and the projection lens and the frame form a space having length e1 on the A side, a1≧d1, b1≧e1−d1, and b1+d1−e1≧c2 are satisfied.
Public/Granted literature
Information query
