Hermetically sealed type electronic flash device

Details Hermetically sealed type electronic flash device Hermetically sealed type electronic flash device

1991-12-16

1992-12-15

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

With signal, indicator, or alarm

315241P, 315241S, 354 64, 362158, 362267, H01J 160, H05B 3100

Patent

active

051720310

ABSTRACT:
A hermetically sealed type electronic flash device comprises an electric circuit device comprising a main capacitor storing light emitting energy therein prior to light emission, a light emission tube for emitting light by the light emitting energy stored in the main capacitor, and a trigger circuit for applying a trigger voltage to the light emission tube prior to the light emission of the light emission tube, a housing having therein a partition wall hermetically separating the interior of the housing to form a battery chamber and an electric circuit chamber there, the battery chamber being capable of being loaded with a battery for driving the electric circuit device, the electric circuit device being provided in the electric circuit chamber, a leak detecting device provided in the battery chamber for detecting the entry of water into the battery chamber and outputting a leak signal, and a control device provided in the electric circuit chamber and capable of receiving as an input the leak signal from the leak detecting device, the control device controlling the electric circuit device so as to deenergize the trigger circuit and cause the light emitting energy in the main capacitor to be discharged on the basis of the leak signal from the leak detecting device.

REFERENCES:
patent: 2996967 (1961-08-01), Edgerton
patent: 3952190 (1976-04-01), Perkins

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