Title:
EMERGENCY NOTIFICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/135105
Kind Code:
A1
Abstract:
An emergency notification device is provided with: an audio signal output unit (11) that outputs a first audio signal to a speaker (30); a switching unit (14) for switching between a state in which the speaker and an audio device (20) that outputs a second audio signal to the speaker are connected, and a state in which the speaker and the audio signal output unit are connected, the switching unit (14) being disposed between the speaker and the audio signal output unit; internal wiring (21C) which is a part of the wiring connecting the speaker and the audio device, and in which the switching unit is intermediately disposed; a signal detection unit (15, 215, 315) that detects voltage corresponding to the current flowing to the internal wiring closer to the speaker than the switching unit; and a determination unit (13) that determines, on the basis of the voltage detected by the signal detection unit, whether the wiring between the switching unit and the speaker is interrupted.
Inventors:
MIZUTANI TAIZO (JP)
Application Number:
PCT/JP2017/040520
Publication Date:
July 26, 2018
Filing Date:
November 10, 2017
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G08B25/08; B60R11/02; G08B21/00; G08B29/10; H04R3/00; H04R29/00
Foreign References:
| JP2016107972A | 2016-06-20 | |||
| JPH10136493A | 1998-05-22 | |||
| JPS62125716A | 1987-06-08 | |||
| JP2016122274A | 2016-07-07 |
Attorney, Agent or Firm:
JIN Shunji (JP)
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