JPH0168273U

JPH0168273U -

Info

Publication number: JPH0168273U
Application number: JP1987161961U
Authority: JP
Priority date: 1987-10-22
Filing date: 1987-10-22
Publication date: 1989-05-02

Description

[Brief explanation of drawings]

第１図は本考案のウインドデフオガ制御装置の
基本構成を示すブロツク図、第２図は本考案の一
実施例を示す回路図、第３図は第２図に示した実
施例に用いられるタイマＩＣのブロツク図、第４
図は第２図に示した実施例のタイムチヤート図、
第５図は従来のウインドデフオガ制御装置の構成
図である。１……電源回路、２……発振手段、３……制御
手段、４……タイマ回路、３１……第１のスイツ
チ手段、３２……第２のスイツチ手段、２１，４
１……タイマＩＣ、ＳＷ１……操作スイツチ、Ｈ
……電熱線、＋Ｂ……電源。 Fig. 1 is a block diagram showing the basic configuration of the wind defogger control device of the present invention, Fig. 2 is a circuit diagram showing one embodiment of the invention, and Fig. 3 is used in the embodiment shown in Fig. 2. Block diagram of timer IC, 4th
The figure is a time chart of the embodiment shown in Figure 2.
FIG. 5 is a block diagram of a conventional window defogger control device. DESCRIPTION OF SYMBOLS 1... Power supply circuit, 2... Oscillation means, 3... Control means, 4... Timer circuit, 31... First switch means, 32... Second switch means, 21, 4
1...Timer IC, SW1...Operation switch, H
...Heating wire, +B...Power supply.

Claims

[Claims for Utility Model Registration] (1) A power supply circuit that connects a heating wire attached to a car window to a power supply, and a power supply circuit that connects to the power supply via an operation switch, and generates a predetermined frequency by turning on the operation switch. oscillation means for outputting a pulse signal; a first switch means connected to the oscillation means and interposed in the power supply circuit for controlling on/off of the power supply circuit at a predetermined cycle in accordance with the pulse signal; control means comprising a second switch means that turns off when the first switch means is on and turns on when the first switch means turns off in the same cycle as the on-off control of the switch means;
A window defogger control device for an automobile, characterized in that substantially the entire output of the power supply circuit supplied to the heating wire is on/off controlled by the operation switch. (2) Practical use characterized in that the oscillation means includes a timer circuit that is activated by turning on the operating switch, and outputs the pulse signal for a predetermined period of time set by the timer circuit from turning on the operating switch. An automobile window defogger control device according to claim 1 of the patent registration claim.