JPH0339780Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a camera with a built-in strobe.

In the case of a camera with a built-in strobe, it is necessary to have a capacitor for strobe emission inside the camera at the same time, and conventionally, it was placed in a space provided inside the center of the bottom cover of the camera body to accommodate other mechanisms. ing. However, with the recent tendency for cameras to become smaller and more multifunctional, the free space inside the camera body has decreased significantly, making it difficult to incorporate a capacitor with sufficient capacity. Although there have been proposals to house batteries within the hollow core of the film take-up spool, the batteries are consumables and must be replaced, making the structure complicated to replace and shield from light. Since this is not practical, the hollow shaft core of the film take-up spool has been left as a dead space.

In view of the above-mentioned circumstances, the present invention provides a camera with a built-in strobe that can be configured in a compact size and that can efficiently incorporate a capacitor with sufficient capacity into a camera body with limited free space by utilizing dead space. With the purpose of A strobe light emitting capacitor is fitted in the camera body so as to be rotatable and electrically conductive, and the film winding spool is configured to be rotatable about the strobe light emitting capacitor as a central axis.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the first illustrated embodiment, a film take-up spool 2 is attached to a cylindrical strobe light emitting capacitor 3 which is vertically and rotatably attached to a camera body 1, with its hollow shaft core 2a being extrapolated. There is.

Small-diameter upper and lower flanges 2b, 2b are formed on the inner periphery of the hollow core portion 2a of the film take-up spool 2, and the upper and lower flanges 2b, 2b slide onto the strobe light emission capacitor 3 with a predetermined fitting tolerance. They are rotatably fitted, and the film take-up spool 2 is rotatably installed around the strobe light emission capacitor 3.

The capacitor 3 has a cylindrical negative terminal 3a and a positive terminal 3b, which are conduction terminals, protruding from the upper and lower ends of the capacitor 3.The negative terminal 3a serves as a biasing member attached to the top inner wall surface of the camera body 1. The spring-like contact piece 4 presses against the body to form a body ground, and the positive terminal 3b is pressed by the pressing force of the spring-like contact piece 4.
is pressed against a circuit board 5 mounted on the bottom inner wall surface of the camera body 1, and is electrically connected to a built-in strobe (not shown).

Like the spring-like contact piece 4, the spring-like contact piece 4 is surrounded by a cylindrical holder 41 whose lower end is closed and which is attached to the inner wall surface of the bottom of the camera body 1. The minus terminal 3a is rotatably fitted around the outer periphery of the bearing hole 41a formed in the end face. That is, holder 4
A spring-like contact piece 4 is disposed within the bearing hole 1, and the negative terminal 3a is fitted into a bearing hole 41a and connected to the spring-like contact piece 4 inside the bearing hole 41a.

A ring-shaped bearing 51 is fixed to the contact portion of the circuit board 5 with the positive terminal 3b, and the positive terminal 3b is rotatably fitted into the bearing 51, and its tip contacts the circuit board 5 in a conductive manner. It's becoming like that.

That is, the capacitor 3 has its negative terminal 3a and positive terminal 3b connected to the holder 4, respectively.
1 and the bearing 51, and the negative terminal 3a and the positive terminal 3b are connected to the spring-like contact piece 4 and the circuit board 5, respectively, by the pressing force of the spring-like contact piece 4, and the film is rotatably mounted. It is disposed within the hollow shaft core portion 2a of the take-up spool 2.

According to the above configuration, the film take-up spool 2 rotates about the capacitor 3 as a central axis, and the upper and lower end terminals 3a and 3 of the capacitor 3
b is in pressure contact with the spring-like contact piece 4 and the circuit board 5, so even if the capacitor 3 rotates due to friction with the upper and lower flanges 2b, 2b as the spool 2 rotates, the necessary electricity is It is possible to maintain a physical connection state.

Incidentally, the relative positions of the upper and lower end terminals 3a and 3b and the corresponding spring-like contact pieces 4 and circuit board 5 may also be reversed.

In a camera with a built-in strobe configured as above,
Axial core space 2a of film take-up spool 2
Since this will be used as the space for loading the capacitor 3, there is no need to secure a special space for just the capacitor 3 as in the past, and the spool shaft will be used to incorporate the capacitor 3 with sufficient capacity for strobe light emission. Even if the core space 2a is expanded, the effect on the overall size of the camera body 1 is extremely small compared to the case where its own space is secured.

As described above, according to the camera with a built-in strobe according to the present invention, the film winding spool is rotated about the strobe light emitting capacitor provided as a central axis by inserting its hollow shaft core into the strobe light emitting capacitor provided in the camera body. This makes it possible to place the strobe light emission capacitor inside the hollow shaft core of the film take-up spool, which used to be a dead space, and allows the strobe light emission capacitor with a simple structure and sufficient capacity to be placed inside the camera body. It can be incorporated extremely efficiently into a camera, increasing the amount of strobe light emitted while making the camera smaller and more compact.
This can contribute to higher performance.

Furthermore, even if the capacitor rotates due to friction when the film take-up spool rotates about the capacitor, the capacitor can maintain the necessary electrical connection.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram showing an embodiment of a camera with a built-in strobe according to the present invention. 1... Camera body (camera body), 2... Film take-up spool, 2a... Hollow shaft core, 3
...Capacitor for strobe light emission, 3a...Minus terminal (continuity terminal), 3b...Plus terminal (continuity terminal), 4...Spring-shaped contact piece (biasing member).

Claims (1)

[Scope of utility model registration request] Conductive terminals are formed protruding from the upper and lower ends of the hollow shaft core of the film take-up spool, and one conductive terminal is pressed and biased toward the other conductive terminal by a biasing member made of a conductive material. A strobe light emitting capacitor that is rotatably and conductively held and mounted in the main body, and the film take-up spool is configured to be rotatable about the strobe light emitting capacitor as a central axis. Built-in camera.