JPS60120437U - Camera with built-in electronic flash device - Google Patents

Abstract

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

Description

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the appearance of the camera according to the present invention;
The figure is a circuit diagram showing a circuit configuration of an embodiment of the present invention, and FIGS. 3 and 4 are circuit diagrams showing specific examples of circuit sections 3 and 4 in FIG. 2. E...Battery power supply, A...Manual operation member, B...Shutter button, 1, 4...Photography execution circuit section, 2...Boost control circuit, 3...Electronic flash device, C1 ... Main capacitor, 10 ... Boost circuit, Xe ... Flash discharge tube, 1
1... Charge detection circuit, 12... Trigger circuit, OR3
...Operation detection circuit.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a camera with a built-in electronic flash device including a booster circuit, a main capacitor, a trigger circuit, and a flash discharge tube, a shutter button and the like that are operated to execute photographic operations such as metering and exposure. , a manual operating member that is operated to prepare for photographing prior to operating the shirt button and is moved from a first position that prohibits careless photographing operations of the camera to a second position that allows photographing operations of the camera; , a boost control circuit that provides a boost command signal to the boost circuit for causing the boost circuit to perform charging operation when the manual operation member is set to the second position;
1. A camera comprising: a photometry circuit that provides a light emission permission signal to a trigger circuit to permit light emission of a flash discharge tube when subject volatility is below a predetermined value. 2. The manual operation member is a protective cover that can be selectively moved between a shielded position that covers the front surface of the photographic lens and an open position that opens it, and the boost control circuit responds to the movement of the protective cover from the shielded position to the open position. The camera according to claim 1, wherein the booster circuit starts operating in response to movement from the open position to the shielded position, and stops the operation in response to movement from the open position to the shielded position. 3. The camera further includes an automatic exposure control circuit that automatically controls exposure based on the output of the photometry circuit, and a common power supply that supplies power to the boost circuit, the photometry circuit, and the automatic exposure control circuit, and the boost control circuit can be manually operated. It includes an operation detection circuit that detects the operation of the member, the photometry circuit, and the automatic exposure control circuit, and starts the boost operation of the booster circuit in response to manual operation of the manually operated member for photographing preparation, and the photometering circuit and the automatic exposure control circuit. Utility model registration claim 1: When the operation of any circuit in the circuit is detected, the boost operation is interrupted for the period of the operation.
Cameras listed in section. 4 The camera further includes an automatic focus adjustment circuit that is supplied with power from a common power source and automatically adjusts the imaging position of the subject image by the photographing lens to a predetermined focus position, and the operation detection circuit further detects the operation of the automatic focus adjustment circuit and boosts the voltage. The camera according to claim 3, wherein the control circuit interrupts the boosting operation of the booster circuit during the operation period of the automatic focus adjustment circuit. 5 The camera further includes an electric film feeding device that is supplied with power from a common power source and automatically feeds the film, an operation detection circuit further detects the operation of the electric film feeding device, and a boost control circuit that detects the operation of the electric film feeding device. The camera according to any one of claims 3 and 4, wherein the boosting operation of the boosting circuit is interrupted during the operating period.