Title:
EMERGENCY BROADCAST SYSTEM AND SPEAKER UNIT
Document Type and Number:
WIPO Patent Application WO/2023/188353
Kind Code:
A1
Abstract:
[Problem] To make it possible to visually recognize emergency broadcast audio that is output from a speaker to residents in a coverage area of an emergency broadcast system. [Solution] The present invention comprises an emergency broadcast device 2 that can switch between any normal broadcast and an emergency broadcast that includes an emergency alert, both broadcasts being constituted by audio signals, and one or more speaker units 3 to which the audio signal is transmitted from the emergency broadcast device 2 through a speaker line 4, wherein: the speaker unit 3 includes a speaker 32 to which the audio signal of the normal broadcast and the audio signal of the emergency broadcast are input, a power receiving circuit 33 that extracts a direct-current power supply from the audio signal of the emergency broadcast, and a lighting control unit 34 that performs lighting control on a light emitting element 35 by using the direct-current power supply; and the light emitting element 35 is not lit during the normal broadcast, but is lit during then emergency broadcast.
Inventors:
ASADA KAZUMA (JP)
NISHIO MAKOTO (JP)
NISHIO MAKOTO (JP)
Application Number:
PCT/JP2022/016769
Publication Date:
October 05, 2023
Filing Date:
March 31, 2022
Export Citation:
Assignee:
TOA CORP (JP)
International Classes:
G08B27/00
Foreign References:
| KR101144972B1 | 2012-05-11 | |||
| JP2019068400A | 2019-04-25 | |||
| JP2015231185A | 2015-12-21 | |||
| JP2014013462A | 2014-01-23 | |||
| JP2004126827A | 2004-04-22 | |||
| JP2005176535A | 2005-06-30 | |||
| KR20190125902A | 2019-11-07 | |||
| KR102261742B1 | 2021-06-07 | |||
| KR20200100329A | 2020-08-26 |
Attorney, Agent or Firm:
OHTSUKI Satoshi (JP)
Download PDF: