Title:
RAPID-FOLD-UP LIGHT-SHIELDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/068276
Kind Code:
A1
Abstract:
A rapid-fold-up light-shielding device comprises a funnel-shaped enclosure (1) formed by folding a light-shielding plate. The light-shielding plate is provided with a first fold line (2), a fold positioning member (3) and a through hole (4) coaxial with the funnel-shaped enclosure (1). When not in use, the light-shielding device can be unfolded into a flat form, such that the volume thereof and a space occupied thereby can be greatly reduced. The light-shielding device has a light weight, is easy to store and carry, has a simple structure, and can be manufactured and processed easily. The light-shielding device has low costs, is suitable for batch production, and can be popular to photography fans.
Inventors:
YUAN GUOKUI (CN)
Application Number:
PCT/CN2019/111587
Publication Date:
April 15, 2021
Filing Date:
October 17, 2019
Export Citation:
Assignee:
ZHUHAI CUFU OPTICAL TECH CO LTD (CN)
International Classes:
G03B11/04
Foreign References:
| DE20317343U1 | 2004-02-19 | |||
| DE20317343U1 | 2004-02-19 | |||
| CN206975371U | 2018-02-06 | |||
| US4045117A | 1977-08-30 | |||
| CN103246128A | 2013-08-14 | |||
| CN209046761U | 2019-06-28 | |||
| CN207152014U | 2018-03-30 | |||
| CN208325658U | 2019-01-04 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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