JPH0283473U

JPH0283473U -

Info

Publication number: JPH0283473U
Application number: JP16249288U
Authority: JP
Priority date: 1988-12-16
Filing date: 1988-12-16
Publication date: 1990-06-28

Description

[Brief explanation of drawings]

第１図は本考案の一実施例回路の構成を示す回
路図、第２図はその一具体的回路図、第３図は従
来の技術のエアドライヤ回路例を示す回路図であ
る。図面中、１はエアドライヤ、２はヒータ、３は
サーモスイツチ、４はバツテリ、６はスタータス
イツチ、８は断線検出装置、１２Ａは警告表示専
用ランプ、１２Ｂは作動表示専用ランプ、１５は
制御部、１９はヒータ断線検出部、２０と２１は
ランプ断線検出部である。 FIG. 1 is a circuit diagram showing the configuration of an embodiment of the circuit of the present invention, FIG. 2 is a specific circuit diagram thereof, and FIG. 3 is a circuit diagram showing an example of a conventional air dryer circuit. In the drawing, 1 is an air dryer, 2 is a heater, 3 is a thermo switch, 4 is a battery, 6 is a starter switch, 8 is a disconnection detection device, 12A is a warning lamp only, 12B is an operation display lamp, 15 is a control unit, Reference numeral 19 indicates a heater breakage detection section, and 20 and 21 indicate lamp breakage detection sections.

Claims

[Scope of utility model registration request]

In an air dryer circuit equipped with a heater, a thermoswitch, and a power switch, a warning display lamp, an operation display lamp, and a means for detecting a disconnection of the heater or its harness and lighting the warning display lamp in a predetermined mode. and a means for detecting normal operation of the heater and lighting an operation indicator lamp in a predetermined mode when the thermoswitch detects a temperature lower than the set temperature, and a means for detecting disconnection of both the warning display and operation display lamps themselves or their respective harnesses. 1. An air dryer circuit comprising means for detecting a disconnection of one lamp and causing the other normal lamp to blink at a time other than the lighting mode of the lamp.