JP2858715B2 - Film unit with lens - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit with a lens provided with a strobe device, and more particularly to a film unit with a lens in which charging of a main condenser is stopped until use.

[0002]

[Prior Art] By the applicant, "Snapshot Flash"
A film unit with a lens provided with a strobe device such as (trade name) is provided. These film units with lenses have a film box with a film and a photographic mechanism built in, and a paper box with cosmetic printing applied as an exterior body. Is widely used because of its simplicity that it can be sent directly to a developing dealer.

[0003] Such a film unit with a lens is enclosed in a packaging bag called a gusset bag at the time of sale, and is displayed at a store in a state where the entire packaging bag is hung on a hanger for product display. This packaging bag is made of a highly moisture-proof material with a layer of polyethylene, polyethylene terephthalate, ethylene vinyl alcohol, etc. on the front and back of an aluminum sheet to protect the film stored in the film unit with lens from moisture. .

Further, in the above-described film unit with lens, the power supply battery incorporated in advance cannot be replaced by the user. For this reason, at the time of flash photography, in order to prevent unnecessary consumption of the power battery, the flash is turned ON only while the flash charging switch is pressed.

On the other hand, a general strobe-equipped camera has a self-holding function and an auto cut-off function for a charge switch of a main capacitor for strobe light emission, and once the charge switch is turned on, the main capacitor is charged to a specified voltage. During the charging, it is kept in the ON state, and is turned off automatically when charging is completed. However, in the case of the above-mentioned film unit with a lens or a general camera which requires a particularly low cost, a simple flash circuit is used. No function is added. In the case of using such a charge switch, the charge switch is turned on when an external operation member is pressed so as not to waste the battery when not in use.

[0006]

[Problems to be solved by the invention] However, a film unit with a lens with a strobe device, "Snapshot Flash"
Some of the photos taken with (product name) etc. do not have the flash device working. This is because there is a difference in brightness between the photographer and the camera, and the photographer often determines that the camera is bright and does not use a strobe even if the camera is dark. In some cases, the user simply forgets to use the strobe or the charging is incomplete.

Since a film unit with a lens is sent to a developing station if one film is used up, the power supply battery has sufficient electric energy. Therefore, in order to solve the above-mentioned problem, it is sufficient to keep the strobe in a constantly charged state so as to always emit light. However, if the battery is charged immediately after manufacturing, there is a problem that the battery is consumed before the user purchases and uses the battery.

According to the present invention, the power supply battery is cut off from the production of the lens-equipped film unit with the strobe device to the sale thereof until the user starts using the film unit. It is an object of the present invention to provide a film unit with a lens of a constant charge and a constant light type.

[0009]

According to the present invention, in order to achieve the above object, one end of an insulating material is fixed to a packaging bag, and one electrode of a battery incorporated in a unit main body and a corresponding electrode. The other end of the insulating material is interposed between the contact piece and the contact piece provided so that the electric current from the battery to the strobe device is cut off when the battery is covered with the packaging bag.

[0010]

When the packaging bag is removed to use a film unit with a lens, one end of the insulating material is adhered to the packaging bag, so that the insulating material sandwiched between the contact piece and the terminal is provided. The other end is pulled out from between them, and the power supply starts from this point.

[0011]

1 schematically shows a film unit with a lens provided with the present invention. The lens-fitted film unit 2 includes a unit main body 3 having a photographing mechanism and an exterior body 4 for housing the unit main body 3. A photographing lens 5, a finder window 6, a strobe light emitting unit 1 are provided on the exterior body 4.
A hole for exposing a shutter button 0, a film counter, and a film winding dial (not shown) is provided so that a photograph can be taken while the shutter button is inserted in the exterior body 4. Further, a first display section 7 is printed on a part of the exterior body 4 immediately below the strobe light emitting section 10. The first display unit 7 displays, for example, “The use period of the strobe is
Until the month, but after opening it is two months. ", The expiration date of the built-in flash in the film unit with lens 2 is displayed.

The lens-fitted film unit 2 is packaged in a packaging bag 12 (shown by phantom lines) which is rich in light-shielding and moisture-proof properties. Both ends of the packaging bag 12 are adhered and closed in a sealed state. One of the closed ends is provided with an insertion hole 14 for a display hanger, and the tip is provided with a notch 13 for opening. In addition, insertion hole 1
A second display 8 having the same display as the first display unit 7 of the exterior body 4 is provided at an end opposite to the end 4.

As shown in FIG. 2, a negative contact piece 21 and a positive contact piece 22 are respectively installed in a battery accommodating portion 11 provided in the unit main body 3. When the power battery 20 is fitted, both terminals 20a, 20b are provided. , Respectively, so as to be energized. AA type battery is used for the power supply battery 20, and it is consumed in about two months after the power supply is started.

However, the lens-equipped film unit 2 which has not yet been taken out of the packaging bag 12 has its tip cut off between the positive contact piece 22 and the terminal 20b of the battery 20 so as to be de-energized so as not to be energized. doing. The other end of the insulating tape 15 is inserted through the insertion port 9 provided in the exterior body 4 to the outside of the exterior body 4 and adhered to the closing portion 12a of the packaging bag 12 as shown in FIG. I have.

The film unit with lens 2 is a packaging bag 1
2 is shipped from the factory in a sealed package, but at the time of this shipment, the strobe device is not energized because one end of the insulating tape 15 is sandwiched between the power supply battery 20 and the positive contact. Therefore, in this state, the power battery 20 is consumed only by spontaneous discharge, and can be used, for example, for two years after manufacturing. And from the point of manufacture,
The annual expiration date is displayed on a part of the first and second display units 7 and 8.

In use, the user tears the packaging bag 12 from the notch 13 and takes out the lens-fitted film unit 2. At this time, since the leading end of the insulating tape 15 is adhered to the closing portion 12a of the packaging bag 12, the other end of the insulating tape 15 is connected to the terminal 20b of the battery 20 and the positive contact 22 by taking out the film unit 2 with the lens. The strobe device is energized by the battery 20 from this point.

When the battery 20 starts energizing the strobe device in this way, the main capacitor and the trigger capacitor constituting the strobe device are charged. After that,
Since the strobe device is always energized, every time the photographing is performed, the photographing using the strobe device together with the constant light emission is performed.

When the lens-fitted film unit 2 taken out of the packaging bag 12 is left unused, the main condenser and the trigger condenser remain charged. In this state, the battery 20 is gradually consumed due to spontaneous discharge of each capacitor and leakage current from the strobe circuit, but the usable period is about two months. In response to this, the first and second display sections 7 and 8 have the packaging bag 1
2 shows the usable period after opening.

In this embodiment, the insulating tape 15 is bonded to the side of the packaging bag 12 where the insertion hole 14 is provided, but may be on the opposite side. In this embodiment, the insulating tape is used. However, the insulating tape is not limited to the tape as long as it is attached to the packaging bag and can cut off the current. Although the present embodiment is directed to a film unit with a lens of a constant light emission type, the present invention is also applicable to a film unit with a lens having a switch operated only when the strobe is not used.

[0020]

As described above, according to the film unit with the lens of the present invention, one end of the insulating material is adhered to the packaging bag which is not removed until the start of use by the user, and the other end is connected to one electrode of the battery. The battery is extremely consumed before the packaging bag is opened after manufacturing without using any complicated parts since the power supply is cut off by interposing between the contact piece and the contact piece. Can be prevented. In addition, since the energization is performed only by taking out the film unit with the lens from the packaging bag at the time of use, a troublesome operation for starting the energization is not added.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a film unit with a lens according to the present invention.

FIG. 2 is a partial sectional view of the film unit with a lens shown in FIG.

FIG. 3 is an explanatory diagram of the film unit with a lens shown in FIG. 1;

[Explanation of symbols]

 2 Film unit with lens 3 Unit main body 4 Exterior body 7 First display unit 8 Second display unit 9 Insertion port 12 Packaging bag 15 Insulating tape 20 Battery 21, 22 Contact piece

Claims (1)

(57) [Claims] 1. A lens which is provided with a pair of contacts on a unit body incorporating a photographing mechanism and a strobe device, between which a battery serving as a power source of the strobe device is loaded, and which is hermetically sealed in a packaging bag. In the attached film unit, the other end of the insulating material, one end of which is fixed to the packaging bag, is interposed between one of the contact pieces and one electrode of the corresponding battery to cut off the power supply to the strobe device. A film unit with a lens.