The invention discloses a light beam excited logical-protecting emitter coupled type alarming device for an automobile lamp. The light beam excited logical-protecting emitter coupled type alarming device for the automobile lamp mainly comprises a sound box HA, a control circuit, a triggering circuit connected with the control circuit, a light-sensitive resistor RL connected with the triggering circuit, and a capacitance multiplying circuit connected with the triggering circuit. The light beam excited logical-protecting emitter coupled type alarming device for the automobile lamp is characterized in that a light beam excited logic amplifying circuit is connected in series between the light sensitive resistor RL and the control circuit; a low-pass adjustable filter circuit is connected in series be between the light beam excited logic amplifying circuit and the negative electrode of the sound box HA; a logic-protecting emitter coupling type amplifying circuit is connected in series between the control circuit and positive electrode of the sound box HA. The light beam excited logical-protecting emitter coupled type alarming device for the automobile lamp has the advantages that the alarm can be automatically generated in case that a driver forgets to turn off the automobile lamp, and therefore, the circumstance and a vehicle-mounted storage uses up can be effectively avoided, and as a result, the service lives of an automobile bulb and a storage battery can be prolonged to the maximum.
Light beam excited logical-protecting emitter coupled type alarming device for automobile lamp
2015-04-01
Patent
Electronic Resource
English
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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