JPS60125620U

JPS60125620U - flash device

Info

Publication number: JPS60125620U
Application number: JP1183784U
Authority: JP
Inventors: 飯田　喜和; 久寿高畑
Original assignee: 株式会社ニコン
Priority date: 1984-01-31
Filing date: 1984-01-31
Publication date: 1985-08-24

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は、従来の閃光装置の概略的な回路図を示す。第
２図〜第４図は本考案の一実施例を示し、第２図は水中
撮影用カメラ及び水中ストロボの外観図を示し、第３図
は水中ストロボのスイッチパネル部のスイッチの配置図
を示し、第４図は水中ストロボの回路図を示す。（主要部分の符号の説明）、１８・・・電源ツマミ、１
８Ａ、１８Ｂ・・・電源スィッチ、１９・・・発光量切
換ツマミ、１９Ａ・・・切換スイッチ、（１０７，１０
８，１１０・・・抵抗、１０９・・・コンデンサ、１１
１・・・トランジスタ）テスト発光手段、１１３・・・
モノマルチバイブレータ（トリガー発信回路）、１５５
・・・Ｘ接点スイッチ。FIG. 1 shows a schematic circuit diagram of a conventional flash device. Figures 2 to 4 show an embodiment of the present invention, Figure 2 shows an external view of an underwater photography camera and an underwater strobe, and Figure 3 shows a layout of switches on the switch panel of the underwater strobe. 4 shows a circuit diagram of an underwater strobe. (Explanation of symbols of main parts), 18...Power knob, 1
8A, 18B...Power switch, 19...Emission amount selection knob, 19A...Selector switch, (107, 10
8,110...Resistor, 109...Capacitor, 11
1...transistor) test light emitting means, 113...
Mono multivibrator (trigger transmission circuit), 155
...X contact switch.

Claims

[Claims for Utility Model Registration] A flash tube, a trigger circuit for causing the flash tube to emit light, a photography light emission mode in which the trigger circuit is actuated to cause the flash tube to emit the main light in response to a synchronization signal from a camera, and In a flash device, the flash device is equipped with an external operation means for switching to either one of test emission modes in which a trigger circuit is operated to cause the flash tube to emit a test emission, and when the test emission mode is set by the external operation means, the trigger A test light emitting means is provided for operating a circuit to perform the test light emission and for returning the trigger circuit to an initial state after a predetermined time after the test light emission, and even if the test light emission mode is set by the external operation means. A flash device characterized in that the trigger circuit is enabled to operate after a predetermined time by a synchronization signal from the camera side.