Flasher Light System for Motor Vehicles.

摘要

1,164,990. Vehicle flasher systems. UNITED-CARR Inc. 27 Feb., 1968 [28 Feb., 1967], No. 9350/68. Heading G4Q. The invention relates to a flasher circuit as shown for causing three rear lights on a vehicle to come on in sequence and then go out together, the corresponding front light flashing in synchronism with one of the rear lights. The lights on the two sides of the vehicle may be flashed selectively or simultaneously according to the setting of a switch 13. The circuit shows the duplicated system for the two sides of the vehicle, with rear lights 14-16, front light 20 and repeater 41. When the switch 13 is moved to energize one of the circuits shown, capacitor 29 charges up through resistor 25 and after a time delay the capacitor voltage is sufficient to operate relay 30. Contacts 36 now close to light the front lamp 20, and the inboard rear lamp 14, and to start capacitor 52 charging through resistor 51. After a further time delay relay 53 is energized to close contacts 46 and thus light the centre rear lamp 15 and start capacitor 62 charging through resistor 61. After a third time delay relay 63 is energized to close contact 57, thus lighting the outboard rear light 16. Meanwhile capacitor 29 has been discharging through resistor 25 and eventually relay 30 drops out, opening contact 36 and extinguishing all the lamps. Resistor 51 is of lower value than 25, and resistor 61 is lower than 51, so that the three capacitors discharge at rates such that all three relays drop out approximately together ready for the commencement of the next cycle. The current through relay 23 increases in steps as each extra lamp is lit, and when all four are conducting the relay closes contacts 42 to light a pilot lamp 41. The lamp may be connected to terminals 33, 48, 58 via switches as long as the resistance from these terminals to earth is such as to ensure proper operation of relay 23. The different time-constants of the three relays 30, 53, 63 may be produced by different values of resistance or capacitance or both.