JPS59137838U

JPS59137838U - alarm device

Info

Publication number: JPS59137838U
Application number: JP3214883U
Authority: JP
Inventors: 真金井; 良一室井; 藤澤　紀郎
Original assignee: Toyoda Gosei Co Ltd
Current assignee: Toyoda Gosei Co Ltd
Priority date: 1983-03-04
Filing date: 1983-03-04
Publication date: 1984-09-14

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の概念を示すブロックダイアグラムであ
る。第２図は本考案の第１実施例に係る警報装置の構成
を示したブロックダイアグラムである。第３図は本考案
の第２実施例に係る警報装置の構成を示したブロックダ
イアグラムである。第４図、第５図、第６図は前２実施例において使用した
スピーカ及びマイクロフォンを装着したステアリングホ
イールの構成図である。そのうち第４図は平面図、第５
図は斜視図、第６図は断面図　　　゛である。１０・・・音響素子駆動部、２０・・・電気音響変換素
子、３０・・・音響電気変換素子、４０・・・雑音レベ
ル検出部、５０・・・利得調節部。１　　　　　　　　　　１６ｃ１− ■−−−寸ち０FIG. 1 is a block diagram showing the concept of the present invention. FIG. 2 is a block diagram showing the configuration of the alarm device according to the first embodiment of the present invention. FIG. 3 is a block diagram showing the configuration of an alarm device according to a second embodiment of the present invention. FIG. 4, FIG. 5, and FIG. 6 are configuration diagrams of a steering wheel equipped with a speaker and a microphone used in the previous two embodiments. Of these, Figure 4 is a plan view and Figure 5 is a plan view.
The figure is a perspective view, and FIG. 6 is a sectional view. DESCRIPTION OF SYMBOLS 10... Acoustic element drive part, 20... Electro-acoustic conversion element, 30... Acoustic-electric conversion element, 40... Noise level detection part, 50... Gain adjustment part. 1 16c1- ■---Dimension 0

Claims

[Scope of utility model registration request]

(1) An acoustic element drive unit that inputs a control signal and drives an electroacoustic transducer according to the control signal, and an electroacoustic transducer that generates sound according to a power signal output from the acoustic element drive unit. an acoustoelectric transducer that detects ambient noise and converts the acoustic vibration into an electrical signal; a noise level detector that determines the noise level of a noise signal output from the acoustoelectric transducer; and the noise level detector. and a gain adjustment section that adjusts the gain of the power signal output from the acoustic element drive section according to the noise level output from the acoustic element drive section.

(2) The alarm device according to claim 1, wherein at least the electroacoustic transducer is provided in a steering wheel for an automobile.

(3) The alarm device according to claim 1, wherein at least the electroacoustic transducer and the acoustoelectric transducer are provided in a steering wheel for an automobile.

(4) The scope of the utility model registration claim, characterized in that the electroacoustic transducer is provided in a headrest that supports the driver's head, which is provided in the upper part of the driver's seat of an automobile. The alarm device according to paragraph 1.