Title:
VIDEO CAMERA
Document Type and Number:
WIPO Patent Application WO/2023/077781
Kind Code:
A1
Abstract:
A video camera is provided. The video camera comprises a lens window; a gas nozzle comprising a gas nozzle chamber that defines a rectification gas chamber (38); a gas inlet (33) that is located on a gas intake side of the rectification gas chamber (38) and is in communication with the gas intake side of the rectification gas chamber (38), the cross section of the gas inlet (33) being circular; and a gas outlet (34) that is located on a gas discharge side of the rectification gas chamber (38) and is in communication with the gas discharge side of the rectification gas chamber (38). A 3D coordinate system is generated by the following means: the direction from the gas inlet (33) to the gas outlet (34) is the X direction, the length direction of the gas outlet (34) is the Y direction, and the direction perpendicular to the X direction and the Y direction is the Z direction. In the X direction, from the gas intake side to the gas discharge side, the size of the rectification gas chamber (38) in the Y direction gradually increases, and the size thereof in the Z direction gradually decreases. The video camera is configured as follows: gas flowing out from the gas discharge side is used to clean the lens window, thereby providing good cleaning capabilities for the lens window of the video camera.
Inventors:
HUANG BIJUN (CN)
FANG ZHIQIANG (CN)
YAN CAISHENG (CN)
FANG ZHIQIANG (CN)
YAN CAISHENG (CN)
Application Number:
PCT/CN2022/095613
Publication Date:
May 11, 2023
Filing Date:
May 27, 2022
Export Citation:
Assignee:
HANGZHOU HIKVISION DIGITAL TEC (CN)
International Classes:
B08B5/02
Foreign References:
| CN113857152A | 2021-12-31 | |||
| CN113877889A | 2022-01-04 | |||
| CN216313230U | 2022-04-15 | |||
| CN206567285U | 2017-10-20 | |||
| CN212663916U | 2021-03-09 | |||
| CN210545780U | 2020-05-19 | |||
| CN206454958U | 2017-09-01 | |||
| CN212883715U | 2021-04-06 | |||
| CN213057000U | 2021-04-27 | |||
| JP2014000949A | 2014-01-09 |
Attorney, Agent or Firm:
PATENTSINO IP FIRM (CN)
Download PDF:
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