JP2003330067A - Photographing device for prevention of crime - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To photograph a subject in size by which the subject can be identified even though a distance to a monitoring range is long while securing a wide photographic viewing angle. <P>SOLUTION: A holding tool 22 for holding two film units with a lens 18 and 19 is provided inside a case. The holding tool 22 is constituted of a pair of holding members and a coupling part for coupling the holding members. Either holding member holds one side surface of either film unit 18. The other holding member holds the other side surface of the other film unit 19. The coupling part couples a pair of holding members so that the photographic optical axes 18a and 19a of the two film units 18 and 19 may be adjusted to form a specified angle. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crime prevention photography apparatus for detecting arson and the like, taking a picture of the scene, and enabling the situation of the scene to be recognized later.

[0002]

2. Description of the Related Art In recent years, suspicious fires, which are considered to be arson, have been increasing. Arsons predominantly occur at night in places other than buildings such as streets and parks. Also, arson occurs in ordinary houses and apartments even during the day. Furthermore, there is a survey result that half of the cultural property fires are caused by arson.
Therefore, the issue of monitorability is an important factor.

[0003] Japanese Utility Model Registration No. 3017131 discloses a simple type monitoring device for taking an image with a lens-fitted film unit in response to detection by an entrance detection sensor.

[0004]

By the way, in a film unit with a lens, the photographing lens generally has a focal length of 20 to 40 mm and a photographing angle of view is wide. Therefore, if the distance from the monitoring position to the monitoring range is long, the size of the subject in the print photograph may be too small to identify the criminal from the print photograph.

The present invention has been made in view of the above problems, and enables a subject to be photographed in a size that can be specified even if the distance to the surveillance range is long while ensuring a wide photographing angle of view. It is an object to provide a devised crime prevention photography device.

[0006]

In order to achieve the above object, in a crime prevention photography apparatus according to the present invention, a holder for holding the photography means, a photography execution means for causing the photography means to perform photography, and a monitoring range. A plurality of image capturing means including a security sensor for monitoring the inside, and a control means for operating the image capturing executing means in response to the detection of the security sensor, so that the total capturing range of the holder includes the monitoring range. It is intended to hold.

As the holders, a first holding member for holding one side surface of the photographing means, a second holding member for holding the other side surface of the other photographing means, and a photographing optical axis of at least two photographing means. Is preferably formed of a connecting portion that connects the first and second holding members so as to form a predetermined angle. The connecting portion has a structure capable of changing the angle with the first and second holding members so that the photographing optical axes of the two photographing means can be adjusted to a predetermined angle according to the environment of the monitoring position. It is preferable to keep it.

As the crime prevention sensor, a small micro switch which is directly attached to a door or a window to operate, an infrared sensor which detects a person's body temperature, a pressure sensor which detects a pressure change due to opening and closing of an entrance, and an abnormal sound emitted when an intrusion occurs. It is possible to use a microphone for sensing, a disconnection sensor for a circuit breaker, a flame sensor for sensing flames such as a lighter or a match. As a flame detection means,
It is preferable to use a flame sensor which is an ultraviolet sensor that does not require the use of an optical visible light cut filter such as a semiconductor sensor.

As the photographing means, a camera or a film unit with a lens in which a photographic film is preloaded at the time of manufacturing is used. In the case of a camera, load a photo film and set it. Further, it is desirable to have an automatic winding function that allows continuous shooting while the shutter release is being pressed.

The holder holds a plurality of photographing means side by side. It is difficult for a plurality of image capturing units to perform the image capturing by the image capturing executing unit at the same time, and a slight deviation occurs in the image capturing timing. If the same number of auxiliary strobe devices are provided for multiple shooting means, simply arranging the light-receiving sensor to make the slave emit light will cause all the auxiliary strobe devices to synchronize with the strobe light of the shooting means at which shooting is performed first. The remaining auxiliary strobe device may not be charged in time and the amount of light may be insufficient. Therefore, it is preferable that a part of the light receiving window is covered with a cover or a mask so that a small amount of light is not incident on the light receiving sensor so that only the stroboscopic light emission of the target photographing means is received. Alternatively, the light receiving sensor and the auxiliary strobe device may be connected one-to-one by a signal line, and the trigger signal may be directly sent from the light receiving sensor to the auxiliary strobe device.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIG. 1, on the front surface of the vertically long rectangular case 11,
Flame sensor 12, a pair of auxiliary strobe light emitting windows 13, 14,
Two photographing windows 15 and 16 are exposed and provided. The outer surface of the case 11 is opaque, and only the pair of auxiliary strobe light emitting windows 13 and 14 and the two photographing windows 15 and 16 are transparent. The flame sensor 12 is arranged in the upper center of the front view. The front surface of the case 11 is an inclined surface with both sides sandwiching the flame sensor 12 descending toward both ends. The pair of auxiliary strobe light emitting windows 13 and 14 and the photographing windows 15 and 16 are arranged along the left and right slopes. A pair of auxiliary strobe devices are built in behind the auxiliary strobe light emitting windows 13 and 14, respectively.

From the photographing windows 15 and 16, the photographing lenses of the film units with lenses 18 and 19 and the stroboscopic light emission windows are exposed. The right side surface of the case 11 is formed with an opening 20 for inserting and removing the two lens-fitted film units 18 and 19. The opening 20 is
It is closed with a lid 21.

As shown in FIG. 2, a holder 22, a photographing execution means 23, auxiliary strobe devices 25 and 26, and a power supply unit 27 are housed inside the case 11. The holder 22 is removably attached to a predetermined position inside the case 11, and integrally holds the pair of lens-fitted film units 18 and 19 in a horizontal position in a horizontal position.

The photographing execution means 23 comprises a control section 28, a flame sensor control section 29, a film winding means 30, a shutter release means 31, and a strobe charge pressing means 32. The shutter release means 31 is the case 1
The shutter buttons of the lens-fitted photo film units 18 and 19 are always pressed.

The strobe charging pressing means 32 is also mounted inside the case 11 or the holder 22, and always presses the strobe charging buttons of the lens-fitted film units 18 and 19, respectively. Film unit with lens 1
The built-in strobe device of 8 and 19 incorporates auto-cut and auto-start functions. Auto cut
The auto start function is a function that cuts off the charging voltage in response to the completion of the charging of the main capacitor and automatically starts the charging when the charging voltage becomes a certain value or less.

Film unit with lens 18, 19
As is well known, the shutter button and the film winding knob for film winding operation are provided, and if the winding button is continuously rotated while the shutter button is kept pressed, one frame film winding and shutter release are performed. Since and are alternately performed, continuous shooting can be performed.

The film winding means 30 is a motor 3
4, a gear train 35, a driver 38, and a pair of friction discs 36 and 37 whose outer circumferences are in contact with the respective winding knobs. The drive of the motor 34 is reduced by the gear train 35 to form a pair of frictions. The winding knobs are transmitted to the discs 36 and 37 to rotate the winding knobs in the film winding direction. The control unit 28 drives the motor 34 via the driver 38 for a certain period of time in response to the execution signal obtained from the flame sensor control unit 29.

The flame sensor 12 is an ultraviolet sensor which does not require the use of an optical visible light cut filter like a semiconductor sensor. This sensor 12 is, for example, 18
It has a sensitivity in the wavelength range of 5 to 260 nm and sends a sensing signal to the flame sensor controller 29 in response to sensing the flame. The sensing signal is a pulse signal that is output only while sensing the flame.

The flame sensor controller 29 includes a level adjusting circuit,
It is composed of an output circuit and a timer circuit. The sensing signal is sent to the output circuit after being captured by the level adjusting circuit in the form of a pulse signal. The flame sensor 12 changes the number of output pulses according to the amount of incident ultraviolet rays. The level adjusting circuit can adjust the sensing level of the incident ultraviolet ray, that is, how many pulses are generated per unit time to be regarded as an output signal. The output circuit counts the pulse signal output from the level adjustment circuit, and outputs a continuous level signal every time a predetermined value is counted. The level signal is converted into an output signal for a fixed time by the timer circuit, and then the output signal is sent to the control unit 28 as a shooting execution signal.

The power supply unit 27 includes an external battery 40 and a booster circuit 4.
It is composed of 1. The booster circuit 41 boosts the voltage of the external battery 40 and supplies the boosted high voltage to the flame sensor 12, the driver 38, and the like. The driver 38 is composed of a switching circuit composed of a resistor and a transistor, and inputs the voltage supplied from the booster circuit 41 to the motor 34 in response to the output signal obtained from the control unit 28.

The film unit with lens 18,
A pair of light receiving sensors 43, 44 and auxiliary strobe devices 25, 26 corresponding to 19 are housed inside the case 11. The pair of light receiving sensors 43, 44 sends a trigger signal to the auxiliary strobe devices 25, 26 in response to receiving the strobe light. Each of the light receiving sensors 43 and 44 has a light receiving window partially covered with a hood so that only the strobe light of the corresponding lens-fitted film units 18 and 19 is received. The auxiliary strobe device 26 disposed on the right side of the front surface of the case 11 is attached in such a posture that the strobe irradiation range is a range including the photographing range of the lens-fitted film unit 19 disposed on the right side of the front surface of the case 11. The lens-equipped film unit 19 emits light only in synchronization with strobe light emission. In addition, the auxiliary strobe device 2 on the opposite side
5 has the same structure. These auxiliary strobe devices 2
5 and 26 are charged by the voltage supplied from the booster circuit 41.

As shown in FIGS. 3 and 4, the holder 22 has a pair of holding members 50 and 51 for detachably holding the two lens-fitted film units 18 and 19, respectively.
And a connecting portion 52 connecting them. The holding members 50 and 51 are made of elastic plastic, and the inner size of the holding members 50 and 51 is the lens-fitted film unit 1.
It is formed in a box shape which is slightly smaller than the side end portions 18a and 19a of 8 and 19. Therefore, the holding members 50, 5
The side end portions 18a, 19a once inserted in 1 cannot be carelessly removed, and the side end portions 18b, 1a on the opposite side are not removed.
If you hold 9b and pull hard, you can easily pull it out. The holding members 50, 51 have shutter buttons 54, 5
5, strobe charge buttons 56, 57, strobe light emission window 5
Notches are provided to expose the 8, 59 and the winding knobs 60, 61 to the outside.

The connecting portion 52 is a hinge having an appropriate friction, and the angle formed by the holding members 50 and 51 can be set arbitrarily.

Further, the holding members 50 and 51 are provided with a semicircular scale plate 62. The position where the free end side of the scale plate 62 fits the back surface of the lens-fitted film unit 18, 19 changes according to the angle formed by the pair of holding members 50, 51. On the scale plate 62, a plurality of indexes indicating numerical values of angles are printed in order from the free end side.

The monitoring range of the flame sensor 12 is, for example, a horizontal angle of view of 80 to 90 degrees, a vertical angle of view of 45 degrees, and a maximum distance of 10 degrees.
The range is 15m. Also, for example, the screen size of the film units 18 and 19 with lenses is 24 × 36 m.
When the Leica size is m and the focal lengths of the taking lenses 64 and 65 are 30 mm, as shown in FIG.
Is about 60 degrees. The flame sensor 12 is provided by using two such film units with lenses 18 and 19 having the same specifications.
Take a panoramic photograph of the entire surveillance area. In this case, the angles of the pair of holding members 50 and 51 are adjusted so that the photographing range covered by the photographing lenses 64 and 65 includes the entire monitoring range of the flame sensor 12.

When the distance to the monitoring range is 15 m, the holding member 5 is arranged so that the photographing ranges are connected horizontally in the monitoring range.
When the angles of 0 and 51 are adjusted, the optical axes 64a and 65a of the taking lenses 64 and 65 are slightly separated from each other.
The angle θ2 of the optical axes 64a and 65a of 5 becomes 30 degrees. By connecting the two finished prints so that there is no gap between them, it becomes a panoramic photo that reproduces the scene of the surveillance range, and the subject is captured even if the distance to the surveillance range is long while maintaining a wide shooting angle of view. Can be captured in an identifiable size.

Since the angle formed by the holding members 50 and 51 is determined according to the distance to the monitoring range, for example, if a comparison table of the angle formed by the holding members 50 and 51 and the distance to the monitoring range is prepared. , Can be adjusted quickly on site. Further, a lens-fitted film unit for telephoto incorporating a photographing lens having a long focal length may be used. In this case, since the shooting angle of view varies depending on the focal length, a comparison table between the angle formed by the holding members 50 and 51 and the distance to the monitoring range may be created for each type of the focal length of the shooting lens.

Next, the operation of the above configuration will be described. Case 1
The unit replacement lid 21 of No. 1 is opened and the holder 22 is taken out. Film unit 1 with two lenses for holder 22
Attach 8,19. The holding members 50, 51 according to the focal lengths of the photographing lenses 64, 65 and the distance to the monitoring range.
Adjust the angle of. After the adjustment, the holder 22 is housed in the case 11, the power switch 70 is turned on, and then the lid 21
Close. As shown in FIG. 2, the power switch 70 is provided in the power supply unit 27, and when turned on, the external battery 4 is turned on.
Power is supplied to the booster circuit 41 from 0.

When the holder 22 is set inside the case 11, the pair of shutter release means 31 presses the shutter buttons 54 and 55. In addition, each winding knob 60,
A pair of friction disks 36 and 37 are pressed against the outer circumference of 61.
Then, the pair of strobe charge pressing means 32 press the strobe charge buttons 56 and 57, respectively.

In response to the turning on of the power switch 70, the flame sensor 12 and the light receiving sensors 43, 44 are activated. After that,
The device 10 is attached to a high position such as an electric pole, and fixed to a place where arson is likely to occur, for example, a trash can with the monitoring range facing.

Since the flame sensor 12 does not detect sunlight (visible light), but only in the sensitivity wavelength range of 185 to 260 nm, for example, a gas or oil lighter,
And surely detect flames such as matches.

When the flame sensor 12 senses a flame, a sensing signal is sent to the flame sensor controller 29. Flame sensor control unit 29
Sends an execution signal to the control unit 28 in response to the sensing signal. The control unit 28 drives the driver 38 in response to receiving the execution signal. As a result, the driver 38 causes the motor 3
4 is supplied with power to drive the motor 34. Motor 34
Is driven by a pair of friction disks 36, 37 via a gear train 35.
Is transmitted to the pair of friction discs 36 and 37 to rotate the pair of winding knobs 60 and 61, respectively.

The rotation of the winding knob 60 transfers the photographic film inside the lens-fitted film unit 18, and the shutter charge is performed when the photographic film is transferred by the length of one frame. At this time, since the shutter release means 31 is pressing the shutter button 54, the shutter release is performed immediately without the film winding stop of the film winding mechanism, and the first photographing is completed. At this time, strobe light is emitted from the strobe light emission window 58 in synchronization with opening and closing of the shutter. This strobe light illuminates the surveillance range through the photographing window 15.

The strobe light emitted from the film unit with lens 18 is received only by the light receiving sensor 43. Upon receiving the strobe light, the light receiving sensor 43 sends a slave signal to the auxiliary strobe device 25. As a result, the auxiliary strobe device 25 is used for the film unit with lens 18
Flashes in synchronization with the flash firing of. Note that the other lens-fitted film unit 19 is also photographed in the same manner, and the other auxiliary strobe device 26 is synchronized with the strobe light emission.
Fires as a slave.

The motor 34 is continuously driven until the counter circuit inside the control unit 28 counts up a predetermined time. The shutter buttons 54 and 55 are held in a released state. As a result, immediately after the completion of the first exposure, one frame is wound up and the shutter is charged by the film transfer, and the second exposure is performed. After that, continuous shooting is continued in the procedure described above. Then, when the count up in the control unit 28 is completed, the motor 3
The drive of 4 is stopped. As a result, continuous shooting is performed by the lens-fitted film units 18 and 19, respectively.

When the flame is detected again, continuous shooting is performed from the remaining shooting frames. After the last frame is taken, the lens-fitted film units 18, 19
All the photo films already taken inside are stored in the cartridge, and the film units with lenses 18 and 19 are used.

When photographing is performed, the unit replacement lid 21 is opened and the holder 22 is taken out. The lens-fitted film units 18 and 19 are taken out from the respective holders 22 that have been taken out. The taken-out lens-fitted film units 18 and 19 are submitted to the photo lab as they are. At the developing station, as is well known, the opening / closing lids at the bottoms of the units 18 and 19 are opened to take out the cartridge, and the film developing process and the baking process are performed as usual to return the developed film and the print photograph.

The apparatus 10 can be reused by attaching a new lens-fitted film unit to the holder 22. The battery built in the lens-fitted film unit is replaced with a new one by replacing the lens-fitted film unit. The external battery 40 built in the case 11 is appropriately replaced.

In the above embodiment, one holding tool 22 is used to
Although one lens-fitted film unit is held, two or more holders 22 may be used to hold three or more lens-fitted film units.

In order to surely perform photographing, it is desirable to push the shutter release once each time the film winding stopper is operated. In this case, the shutter release means is composed of a pressing means that is movable between a pressing position for pressing the shutter button and a pressing release position retracted from the shutter release position. Drive for switching to a winding stop detecting means for detecting that the winding knob is driven, a transmission position for driving the winding knob and a shut-off position for releasing the drive application to the winding knob by the winding stop detecting means in conjunction with the detection of the winding stop.・ Provide a shutoff means. In this case, the photographing execution means is
While the film winding means is winding the film, the shutter release means is controlled to intermittently perform one operation in which the pressing means moves from the pressing release position to the pressing position and again to the pressing release position. .

In the above embodiment, the example for arson monitoring is explained, but the present invention is not necessarily limited to this. For example, it can be used later for disaster prevention in a laboratory, a test room, a manufacturing process or the like. The cause of the fire can be easily determined. Further, by using a crime prevention sensor instead of the flame sensing means, it can be used for crime prevention. Crime prevention sensors include a small micro switch that operates directly attached to a door or window, an infrared sensor that detects the body temperature of a person, a pressure sensor that detects pressure changes due to opening and closing of entrances, and a microphone that detects abnormal sounds when an intrusion occurs. ,
A disconnection detection sensor used in a circuit breaker can be used.

In the holding portion 22 of the above embodiment, the lens-fitted film units 18 and 19 are arranged side by side in a horizontal position, but they are arranged side by side in a vertical position. May be. In this case, it is preferable to hold the shutter buttons in a posture in which the shutter buttons face both sides in consideration of the arrangement space of the shutter release means.

Further, it goes without saying that a commercially available camera capable of film exchange may be used instead of the lens-fitted film unit. In this case, it is preferable to use a type in which the film is automatically rolled up for continuous shooting by holding down the shutter button. In this case, the film winding means can be omitted.

[0044]

As described above, according to the security photograph taking apparatus of the present invention, since the holder for holding the plurality of photographing means is provided so that the photographing range includes the monitoring range, the plural monitoring ranges are provided. You can take a picture with the shooting means. Therefore, it is possible to capture a subject in a size that can be specified even when the distance to the monitoring range is long while ensuring a wide shooting angle of view.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of a arson monitoring photograph taking apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory view schematically showing the internal structure of the arson monitoring photographer.

FIG. 3 is a front perspective view showing a holder for holding a plurality of lens-fitted film units.

FIG. 4 is a rear perspective view of the holder.

FIG. 5 is an explanatory view showing an angle of a photographing optical axis of a lens-fitted film unit held by a holder.

[Explanation of symbols]

10 Photographing equipment for arson monitoring 12 Flame sensor 18, 19 Lens film unit 22 Holder 31 Shutter release means 32 Strobe charging start means 50,51 holding member 52 Connection 43,44 Light receiving sensor

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G03C 3/00 575 G03C 3/00 575B 575H 575Z G08B 15/00 G08B 15/00

Claims (3)

[Claims] 1. A holder for holding a photographing means, a photographing execution means for causing the photographing means to perform photographing, a security sensor for monitoring a surveillance range, and the photographing execution means in response to detection by the security sensor. And a control unit for activating the image capturing apparatus, wherein the holder holds a plurality of image capturing units so that a total image capturing range includes a monitoring range. 2. A first holding member that holds one side surface of a photographing means, a second holding member that holds the other side surface of another photographing means, and a photographing of the two photographing means. 2. The crime prevention photography apparatus according to claim 1, wherein the optical axis is composed of a connecting portion that connects the first and second holding members so that the optical axis has a predetermined angle. 3. A light-receiving sensor and an auxiliary strobe device which emits a slave light in response to receiving the strobe light emitted from a strobe device built in said photographing means by said light-receiving sensor, in an amount corresponding to said photographing means. 3. The crime prevention image taking apparatus according to claim 1, wherein the light receiving sensor receives only strobe light emitted from a target image taking unit.