JPH063378Y2 - Strobe for lens-equipped film unit - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to
A film packaging container with a built-in cartridge (hereinafter,
The present invention relates to a strobe for a film unit with a lens used in a "film unit with a lens").

[Conventional technology]

A film unit with a lens in which a simple photographing mechanism is attached to a container containing a film is commercially available. According to this, even when the camera is not carried, it is possible to easily enjoy taking a picture simply by purchasing the lens-equipped film unit.

Such a film unit with a lens can also be used as a shutter, for example, in order to be inexpensively supplied.
A very simple one such as a one-speed shutter of about 125 (seconds) is used, and it is possible to take an image only by operating a shutter button. The latitude of the film corresponds to the level of the subject brightness, and an appropriate print density is obtained by adjusting the print processing.

However, there are many cases in which a low-luminance subject cannot be dealt with only by the latitude of the film. In consideration of such circumstances, a low-priced strobe is attached to a film unit with a lens at the time of shipment in advance, as proposed in Japanese Patent Application No. 62-87309, so that photographing using the strobe can also be performed. Attempts are being made.

By the way, the main capacitor used for strobe is
Since it is bulkier than other circuit components placed on the printed circuit board, it is soldered via lead wires to the printed circuit board without fixing it to the surface of the printed circuit board via terminals like other circuit components. , It was stored in the space between the back of the printed circuit board and the case body.

[Problems to be solved by the invention]

However, with the strobe assembled as described above,
During the transportation and transfer, there were cases where an unexpected spot on the printed circuit board was short-circuited or the main capacitor became unusable, making it unusable as a strobe.

[Purpose of device]

An object of the present invention is to provide a strobe for a film unit with a lens, which is free from a cost burden and solves a trouble during transfer which has occurred in a conventional strobe.

[Means for solving problems]

In order to solve the above problems, the present invention is based on the fact that the main cause of the failure during the transportation and transfer of the strobe up to now is the vibration of the main capacitor soldered to the printed circuit board via the lead wire. In order to prevent this main capacitor from vibrating inside the case body, in order to prevent the main capacitor from moving to the printed circuit board side by contacting with the outer periphery of the main capacitor on the front inner wall of the case body. The projections are integrally formed.

[Action]

According to the above configuration, the outer periphery of the main capacitor is restricted by the protrusions formed on the inner wall of the front surface of the case body so that the main capacitor does not vibrate even if the strobe vibrates during transportation or transportation. As a result, it does not collide with the circuit parts, wiring parts, etc. on the printed circuit board. Therefore, it is possible to surely prevent a failure such that a circuit component or a lead wire provided on the printed board is damaged or deformed, and thereby an unexpected portion on the printed board is short-circuited.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

〔Example〕

In FIG. 3 showing the appearance of the strobe of the present invention and a film unit to which the strobe is attached, the strobe has a case body 10, and a light emitting portion 11 is provided on the front surface of the case body 10.
The charging switch 12 is provided with legs 13 on its side surface. The film unit 50 also includes a taking lens 51, a finder opening 52, a release button 53, a film counter display window 54, a winding knob 55, a hot shoe 56, and the like.

At the time of shipment from the factory, the case main body 10 is attached to the lens-fitted film unit 50 and loaded in the paper box 60 shown on the left side of the drawing. The paper box 60 has openings 61 to 6 corresponding to the taking lens 51, the viewfinder 52, the release button 53, the film count display window 54, the winding knob 55, the stroboscopic light emitting section 11, and the charging switch 12.
7 is formed, and the film unit with lens 50 in which the case body 10 is attached from the paper box 60
You can shoot without taking out.

In FIGS. 1 and 2 showing the inside of the case body 10 made of plastic, a printed circuit board 20 is attached to the center so as to divide the inside into two parts.
The AA dry cell 21 and the main capacitor 22 are housed in the right block of the printed circuit board 10, and these terminals are soldered to the printed circuit board 20 via lead wires, which will be described later in detail.

A plurality of openings 20a are formed in the printed circuit board 20, and projections 24 and 25 integrally formed on the inner wall of the front surface of the case body 10 penetrate through the openings 20a and abut the left side surface of the main capacitor 22. ing. Although each of the protrusions 24 and 25 is provided in a pair in the horizontal direction, one protrusion may be provided.

The right side surface of the main capacitor 22 is engaged with a pair of engaging members 26, 27 integrally formed on the inner wall of the rear surface of the case body 10. If an insulator such as silicon or epoxy resin is used as a spacer between the printed circuit board 20 and the main capacitor 22, the movement of the main capacitor 22 can be prevented more reliably.

The left block divided by the printed circuit board 20 is provided with a light emitting section 11, a strobe circuit 30, and a charging switch 12 in this order from the top. The light emitting unit 11 includes a reflector 31 and a discharge tube 32, and the discharge tube 32 is connected to the strobe circuit 30. Further, a cover 33 made of transparent plastic is attached to the front surface of the light emitting unit 11.

The charging switch 12 is composed of a Z-shaped contact piece 34 and an L-shaped contact piece 35. The L-shaped contact piece 35 is made of a conductive metal having elasticity and is screwed to the lower end of the printed circuit board 20. This L-shaped contact piece 3
An insulating plate 36 for preventing electric shock as shown in FIG. One Z-shaped contact piece 34
Are mounted on the printed circuit board 20 behind the insulating plate 36.

A lead wire 37 from the L-shaped contact piece 35 is soldered to one electrode of the dry battery 21, and a lead wire 38 from the printed circuit board 20 is soldered to the other electrode so that the dry battery 21 can be easily removed. It is considered not to be. Similarly, both electrodes of the main capacitor 22 are soldered to the printed circuit board 20 via lead wires 39 and 40, respectively.

The leg portion 13 attaches the case main body 10 to the lens-equipped film unit 50, and also releases the release button 5
It is a terminal that receives a synchro signal from the film unit with lens 50 when 3 is pressed. The lens-equipped film unit 50 is preliminarily loaded with a film so that the film can be photographed, and the back cover is fixed to the lens-equipped film unit 50 by ultrasonic welding or the like, or has a function of feeding the film in only one direction. If the film is taken out and the film is taken out once, the film containing the cartridge cannot be reloaded.

The lens-fitted film unit 50 and the case body 10 which are manufactured separately are, first, the lens-fitted film unit 5
When the leg portion 13 of the case body 10 is slid into the hot shoe portion 56 of the lens-equipped film unit 50 from the front of 0, the case body 10 is attached to the side surface of the lens-equipped film unit 50.

The operation of the present invention will be described below. When the charging switch 12 is turned on by pressing the insulating plate 36, the L-shaped contact piece 35
Is contacted with the Z-shaped contact piece 34 by being bent as shown by the broken line in FIG. 2, and the main capacitor 22 is charged by the dry battery 21. When the release button 53 is pushed in after the main capacitor 22 is charged, a short circuit signal is supplied to a known trigger circuit in the strobe circuit 30 via the leg portion 13, and the high voltage charge charged in the main capacitor 22 is charged. However, it flows into the discharge tube 32 to be discharged and emitted, and auxiliary illumination is given to the subject. When the pressing of the charging switch 12 is stopped, the L-shaped contact piece 35 returns to the position shown by the solid line in FIG. 2 so that the strobe circuit 30 is deenergized and the operation of the trigger circuit is blocked.

By the way, the main capacitor 22 has a protrusion 2 on its left side surface.
4, 25, and the right side surfaces are respectively held by the engaging members 26, 27, so that the main capacitor 22 moves in the horizontal direction against vibrations, shocks, etc. during transportation or transfer, and the printed circuit board No more collisions with 20. Therefore, it is possible to prevent the circuit components arranged on the back surface of the printed circuit board 20 from being destroyed as in the conventional case. Also, the terminals of the circuit components which penetrate the printed circuit board 20 and are soldered on the back surface are not bent and short-circuited. Further, since the lead wires 39, 40 are also not pulled, the lead wires 39, 40 are not peeled off at the soldered portion to cause contact failure.

In this embodiment, the protrusions 24 and 25 and the engaging members 26 and 27 are provided on the front inner wall and the rear inner wall of the case body 10 to prevent the main capacitor 22 from moving. Is obtained. Therefore, the strobe of the present invention can stably emit light and repeat charging.

Further, the protrusion of the present invention is effective not only for restricting the movement of the dry battery 21 as well as the main capacitor 22.

[Effect of device]

As described above, according to the present invention, the case body is integrally formed with the protrusion that comes into contact with the outer periphery of the main capacitor, so that the main capacitor can be moved to the printed circuit board side due to vibration or shock during transportation or movement. Therefore, the circuit components incorporated in the back surface of the printed circuit board will not be damaged, or the lead wire will not be bent to cause an unexpected short circuit. Further, the lead wire connected to the main capacitor is not pulled, and it is possible to prevent contact failure caused by peeling at the soldering portion of the lead wire. Furthermore, since the main capacitor can be pushed into the case body by the tip while holding the printed circuit board at the middle portion of the protrusion, the work of loading the printed circuit board and the main capacitor can be easily performed. Therefore, a highly reliable strobe for a film unit with a lens can be obtained, and since the protrusion is formed integrally with the case body, the manufacturing cost does not increase.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of an embodiment of a strobe for a film unit with a lens according to the present invention. FIG. 2 is a sectional view of the embodiment shown in FIG. FIG. 3 is a perspective view showing a state before the lens-equipped film unit equipped with the strobe shown in FIG. 1 is loaded into a paper box. 10 ... Case body 20 ... Printed circuit board 22 ... Main capacitor 24, 25 ... Protrusion 39, 40 ... Lead wire 50 ... Film unit with lens.

Claims (2)

[Scope of utility model registration request] 1. A strobe for a film unit with a lens in which a printed circuit board, a main capacitor connected to the printed circuit board and the like are housed in a case body, wherein the strobe is integrally formed on the case body and has a tip that contacts an outer periphery of the main capacitor. A lens-attached film, characterized in that it has a protrusion in contact with it and an opening formed in the printed circuit board and through which the protrusion is inserted so as to prevent the main capacitor from moving to the printed circuit board side in the case body. Strobe for unit. 2. The utility model registration claim, wherein the main capacitor is sandwiched between the protrusion provided on the inner wall of the front surface of the case body and the protrusion formed on the inner wall of the rear surface of the case body. Strobe for a film unit with a lens according to claim 1.