Title:
UPPER AIR DUCT-BASED AIR SUPPLY MECHANISM, HEAD-MOUNTED PROTECTOR, AND ELECTRIC PROTECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/147855
Kind Code:
A1
Abstract:
An upper air duct-based air supply mechanism, a head-mounted protector (30), and an electric protection device. The upper air duct-based air supply mechanism comprises a helmet band structure (10) and an upper air supply assembly (20). The upper air supply assembly (20) comprises an arc-shaped ventilation pipe (21); the front end of the arc-shaped ventilation pipe (21) is provided with an air outlet (21a), a bottom plate (22) provided on the bottom side of the air outlet (21a) and extending towards the air outlet direction, and a cover plate (23) detachably fixed on the bottom plate (22) and provided with an opening on the end of the air outlet direction; an air outlet cavity is formed between the cover plate (23) and the bottom plate (22), and the front end of the bottom plate (22) is flared; and an air outlet area of the air outlet cavity covers an entire face area of a wearer. By fixing the upper air supply assembly (20) on the helmet band structure (10), air input from the rear portion of the upper air duct-based air supply mechanism is blown out from the front end; and by means of the bottom plate (22) provided at the front end of the arc-shaped ventilation pipe (21) and the provision of a flow guide member (24) on the bottom plate (22), a part of the air blown to a human face is transferred to both sides of the front side of the human face, thus reducing the discomfort caused by direct blowing to the front side, and improving the degree of comfort during a wearing operation.
Inventors:
GAO WEIRENG (CN)
Application Number:
PCT/CN2021/072969
Publication Date:
July 14, 2022
Filing Date:
January 21, 2021
Export Citation:
Assignee:
CHANGZHOU SHINE SCIENCE & TECH CO LTD (CN)
International Classes:
A62B18/02
Foreign References:
JP2020176340A | 2020-10-29 | |||
CN212014557U | 2020-11-27 | |||
CN201723964U | 2011-01-26 | |||
CN211960991U | 2020-11-20 | |||
CN111803815A | 2020-10-23 | |||
CN111084940A | 2020-05-01 |
Attorney, Agent or Firm:
BEIJING JINXIN CHENGTAI INTELLECTUAL PROPERTY AGENCY CO. LTD. (CN)
Download PDF: