Title:
火災報知設備
Document Type and Number:
Japanese Patent JP7252765
Kind Code:
B2
Abstract:
To provide fire alarm facilities that reduces an installation space by incorporating a function of emergency telephone facilities into a receiver of fire alarm facilities without impairing a function of maintenance telephone facilities, avoids individual display at the time of fire occurrence, and improves operability of fire handling and call connection.SOLUTION: A receiver 10 monitors fire by an analog fire detector 14 connected to a signal line 12-1 drawn out into facilities. The receiver includes; a maintenance telephone circuit unit 62 for detecting an incoming call by connection of a maintenance telephone slave unit 28 relative to a slave unit connection terminal 26 of a maintenance telephone line 24 to form call connection with a telephone master unit on the receiver side; and an emergency telephone circuit unit 64 for detecting an incoming call from an emergency telephone slave unit 34 connected to an emergency telephone line 32 and forms call connection with the telephone master unit to notify a reception control unit 70 of an incoming call of emergency telephone to report it. A call controller 72 of the receiver controls a call by each of the maintenance telephone circuit unit and the emergency telephone circuit unit to control a call when an incoming call from the maintenance telephone slave unit and the emergency telephone slave unit overlaps.SELECTED DRAWING: Figure 1
Inventors:
Hiroo Kikuchi
Maki Kusumi
Maki Kusumi
Application Number:
JP2019009979A
Publication Date:
April 05, 2023
Filing Date:
January 24, 2019
Export Citation:
Assignee:
Hochiki Corporation
International Classes:
G08B17/00; G08B25/00; H04M9/00
Domestic Patent References:
| JP2018017066A | ||||
| JP2018180580A | ||||
| JP2010231581A | ||||
| JP57046995U |
Foreign References:
| US20180114430 |
Attorney, Agent or Firm:
Takeuchi Susumu