JPS5935926U

JPS5935926U - flash device

Info

Publication number: JPS5935926U
Application number: JP1983097623U
Authority: JP
Inventors: 善蔵中村; 恒川　十九一; 大滝　照平; 高志内山
Original assignee: キヤノン株式会社
Priority date: 1983-06-23
Filing date: 1983-06-23
Publication date: 1984-03-06

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案に係る閃光装置の一実施例を示す回路図
、第２図は第１図示の閃光装置に接続し使用するカメラ
のシャッター秒時化制御回路の一実施例を示す回路図で
ある。２・・・・・・電源、８・・・・・・コンデンサー、１
１・・・・・・ネオン管、１２・・・・・・トランジス
ター、１３・・・・・・抵抗、１５・・・・・・抵抗、
１６・・・・・・発光ダイオード、１８・・・・・・サ
イリスター、２２・・・・・・コンデンサー、２４・・
・・・・トランジスター、２５・・・・・・抵抗。才１図 ■Fig. 1 is a circuit diagram showing an embodiment of a flash device according to the present invention, and Fig. 2 is a circuit diagram showing an embodiment of a shutter speed control circuit for a camera connected to and used with the flash device shown in Fig. 1. It is. 2...Power supply, 8...Capacitor, 1
1... Neon tube, 12... Transistor, 13... Resistor, 15... Resistor,
16... Light emitting diode, 18... Thyristor, 22... Capacitor, 24...
...Transistor, 25...Resistor. 1 figure ■

Claims

[Scope of utility model registration request]

A main capacitor for storing flash energy, a detection means that detects the charge level of the capacitor and generates a detection output when the charge level reaches a predetermined potential, and a trigger circuit for the flash tube that becomes conductive when the synchronizer switch is closed. a timer circuit comprising a first semiconductor switching means for activating the first semiconductor switching means, and a resistor and the time-limiting capacitor connected to the semiconductor switching means and forming a current path of the time-limiting capacitor by conduction of the switching means to start a time-limiting operation; and a first circuit which is connected to the output of the detection means and the output of the timer circuit, switches in response to the output of the detection means, and maintains the switching state for one hour in response to the output of the timer circuit even after the output of the detection means disappears. 1. A flash device, characterized in that the second semiconductor switching means switches and maintains the photographing mode of the camera to a flash mode while the second semiconductor switching means maintains the switching state.