ALARM DEVICE FOR SHOW CASE AND THE LIKE

PURPOSE:To provide an alarm device in which various abnormal states in a show case and the like can be discretely alarmed and the number of component parts is decreased. CONSTITUTION:Alarm lamps 2 and 4 are connected to a power source AC in series with each of alarm sensors 3 and 5 for detecting an...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	SHINODA SHOSAKU
Format:	Patent
Sprache:	eng
Schlagworte:	ALARM SYSTEMS BLASTING COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS HEAT PUMP SYSTEMS HEATING ICE-BOXES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING ORDER TELEGRAPHS PHYSICS REFRIGERATION OR COOLING REFRIGERATORS SIGNALLING SIGNALLING OR CALLING SYSTEMS WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To provide an alarm device in which various abnormal states in a show case and the like can be discretely alarmed and the number of component parts is decreased. CONSTITUTION:Alarm lamps 2 and 4 are connected to a power source AC in series with each of alarm sensors 3 and 5 for detecting an abnormal state of a show case and the like and closing their contact points. A relay coil 6 is connected in parallel with the alarm lamp 4. An alarm buzzer 7 is connected a remote controlled contact point of a changing-over switch 9 changed over and driven by the relay coil 6. A normal-closed contact point (a) of the changing-over switch 9 is connected between the alarm sensor 3 and the alarm lamp 2. A normal-opened contact point (b) of the chanting-over switch 9 is connected to the power source AC. The alarm buzzer 7 is constructed to be connected in parallel to the alarm lamp 2 under a condition in which the changing-over switch 9 closes the normal-closed contact point (a).