Title:
FIRE DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/152956
Kind Code:
A1
Abstract:
The present invention provides a fire detection device capable of increasing moisture resistance of the fire detection device. A sensor 100 is a fire detection device attached to a ceiling surface 900, and comprises: an inflow space 400 provided inside the sensor 100; a detection space 300 for detecting an object to be detected, the detection space 300 provided at a position closer to the ceiling surface 900 side than the inflow space 400 inside the sensor 100; an inner cover 2 that houses the detection space 300, the inner cover 2 allowing gas containing the object to be detected to flow in and out of the detection space 300 via the inflow space 400; an outer cover 1 that houses the inner cover 2, the outer cover 1 allowing the gas to flow in and out of the inflow space 400; and a suppression unit 15 that is provided in the inflow space 400 and is formed integrally with the outer cover 1, the suppression unit 15 for suppressing the inflow of moisture contained in the gas into the detection space 300.
Inventors:
WASHIZU KEISUKE (JP)
MASUZAWA HIROKI (JP)
MASUZAWA HIROKI (JP)
Application Number:
PCT/JP2022/005633
Publication Date:
August 17, 2023
Filing Date:
February 14, 2022
Export Citation:
Assignee:
HOCHIKI CO (JP)
International Classes:
G08B17/10
Foreign References:
| JP2020013396A | 2020-01-23 | |||
| JP2019046112A | 2019-03-22 | |||
| JP2019046112A | 2019-03-22 |
Attorney, Agent or Firm:
SAITO TATSUYA (JP)
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