JPH0541824A - Small sized monitor camera - Google Patents

Abstract

PURPOSE:To install the camera simply in an attitude adapted to the mount environment of the mounted location by supporting a camera unit so as to be turned on a prescribed center shaft thereby adjusting the visual field. CONSTITUTION:The camera is provided with a camera unit 3 converting a video image into an electric image pickup signal by scanning the video image formed on a photoelectric conversion element through a lens 12, a peripheral circuit unit 4 including a signal conversion means converting a received image pickup signal into a video signal, a board 2 on which cases 11, 31 for the camera unit 3 and the peripheral circuit unit 4 are mounted in common, and a camera unit support section supporting the camera unit 3 onto the board 2 so as to allow the unit 3 to be turned around one center shaft. Thus, the camera is installed simply in an optimum installation attitude to the installation condition of a kind with respect to a mount wall around the monitor location.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small surveillance camera,
In particular, the mounting posture or the visual field for the monitored object can be easily set.

[0002]

2. Description of the Related Art Conventionally, a monitoring device for detecting an abnormality in a monitored object based on a video signal obtained from a television camera is, for example, a mold monitoring in an injection molding cycle of an injection molding machine, a printed wiring board, or the like. It is used as a means to check the quality of products in component mounted products like this, and to monitor abnormalities in security devices, etc., and it is a predetermined position in the display screen represented by the surveillance video signal obtained from the television camera. The change in the size of the surveillance video signal (that is, the brightness on the display screen) in the is detected as surveillance information, and the surveillance result can be evaluated based on whether the surveillance information falls within a predetermined allowable range. Things have been proposed.

[0003]

By the way, when a surveillance video signal is to be obtained by such a method, in order to obtain surveillance information adapted to the surveillance purpose, the installation position and the viewing direction of the television camera are changed. It is necessary to make detailed settings as necessary, but in practice it is necessary to image the monitored object from the required angle in a limited space, or to install in an installation mode that is inconspicuous from the monitored object. Often there is.

The present invention has been made in consideration of the above points, and it is possible to easily install a television camera on an installation target such as a mounting wall surface around the monitored target, if necessary. It aims to propose a small surveillance camera.

[0005]

In order to solve the above problems, the present invention provides a camera unit 3 for converting an image formed on a photoelectric conversion element through a lens 12 into an electric image pickup signal. A peripheral circuit unit 4 including a signal converting means for receiving an image pickup signal and converting it into a video signal, a board 2 to which the camera unit 3 and the cases 11 and 31 of the peripheral circuit unit 4 are commonly attached, and the camera unit 3 are provided in a predetermined manner. A camera unit support portion 20 is provided on the substrate 2 so that the camera unit support portion 20 can be rotated about one central axis.

[0006]

The camera unit 3 and the peripheral circuit unit 4 are mounted on the board 2 in common, and the camera unit 3 can be rotated with respect to the board 2, so that various installations can be made on the mounting wall around the monitoring place. It is possible to easily realize a small surveillance camera that can be easily installed in an installation mode that is optimal for the conditions.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings.

[1] First Embodiment In FIG. 1, reference numeral 1 denotes a small surveillance camera as a whole,
A camera unit 3 is attached to one end of a rectangular substrate 2, and a peripheral circuit unit 4 is attached to the other end.

In the case of this embodiment, the substrate 2 has a vertically elongated shape, and a pair of screw holes 5U1, 5U2 and 5L1, 5L2 are formed at the upper end and the lower end, respectively, and screws 6U1, 6U2 are respectively formed. By screwing 6L1 and 6L2 onto the mounting wall 7 to be mounted, the substrate 2, and hence the small surveillance camera 1 can be installed on the wall surface of the mounting wall 7.

The camera unit 3 is provided on a surface plate 11A of a case 11 having a substantially rectangular shape when viewed from the front so that the lens 12 is projected forward, thus the field of view FL.
An object to be imaged in D is, for example, a CCD (Chage Coupled
(Device) forms an image on the photoelectric conversion element and electrically reads it to convert the optical image into an electrical image signal, and the image signal is transmitted to the peripheral through the image signal cable 13. It is designed to be supplied to the circuit unit 4.

The image signal thus supplied is converted into a video signal of the standard television signal system by the signal conversion means in the peripheral circuit unit 4 and then, for example, via the video signal cable 14, for example, the central monitoring room. It is transmitted to the central monitoring and processing unit installed in.

The central supervisory processor thus receives the video signals transmitted from the multiple surveillance sites,
If necessary, the monitoring points set on the receiving screen are evaluated to determine whether the video part is normal or not, thereby forming monitoring information indicating whether or not an abnormality has occurred at each monitoring location, and By displaying a video signal on the monitor in accordance with the above, a monitor can visually confirm the condition of the monitored object at each monitoring place.

In the case of this embodiment, a power circuit is housed in the peripheral circuit unit 4, and a power / control signal cable 15 is provided.
For example, using a power source supplied from a commercial power source,
Power is distributed to each component of the camera unit 3 and the peripheral circuit unit 4.

A mounting plate portion 21 is provided at an upper end position of the substrate 2 so as to project forward, and a camera unit supporting portion 20 as shown in FIG. 2 is mounted at a substantially central position thereof. The camera unit supporting portion 20 has a through hole 22 penetrating the thickness of the mounting plate portion 21, and a fixing screw 23 for inserting the through hole 22 is provided on the inner surface of the top plate 24 of the case 11 as an attachment member 25U. The fixing screw 23 is screwed into the screw hole 25A of the attachment member 25U so as to sandwich the mounting plate portion 21 so that the camera unit 3 is mounted by the fixing screw 23 as a whole. It can be fixed in a state of being suspended under the plate portion 21.

Here, the direction in which the camera unit 3 is fixed can be changed by loosening the fixing screw 23 and rotating the camera unit 3 about the fixing screw 23. After setting the direction of the field of view FLD (FIG. 1) of the lens 12 around the axis L1 as desired by the user, the fixing screw 23 is tightened so that the lens unit 12 is directed in the predetermined direction. 3 can be fixed to the mounting plate portion 21. As a result, the camera unit 3 has a vertical central axis L.
The field of view FLD can be set over a range of about 180 ° in the left-right turning direction indicated by arrow K1 with 1 as the center.

In the case of this embodiment, a gap having a predetermined width is provided between the case 11 of the camera unit 3 and the substrate 2.
This prevents the case 11 from coming into contact with the substrate 2 when the field of view FLD of the camera unit 3 is set, and the imaging signal cable 13 is attached to the case 11 from the back side of the case 2 using the gap. After pulling out in the horizontal direction, the front plate 31 of the case 31 of the peripheral circuit unit 4
It is designed to be able to be drawn into the cable drawing hole 32 provided at the upper end portion of A, so that the imaging signal cable 13 can be compactly assembled without disturbing the direction setting work of the camera unit 3. ing.

In the case of this embodiment, the camera unit 3
The case 11 has a top plate with an attachment member 25U.
In addition to the above, the same attachment members 25D, 25L, and 25R are provided on the lower plate, the left side plate, and the right side plate, and the board 2 is vertically moved by screwing the fixing screws 23 into the screw holes. The camera unit 3 can be fixed on the substrate 2 by selecting a mounting mode in which the camera unit 3 is turned upside down or turned sideways in the left-right direction, thereby increasing the degree of freedom in the mounting direction of the substrate 2. Has been done.

In addition to this, a normal display mark 35 is provided on the surface plate 11A to which the lens 12 of the case 11 is attached, and by this normal display mark 35, the CCD is formed.
So that the user can recognize the optical image in which the image is formed in the normal position (representing the horizontal and vertical scanning directions when converting the formed image into an image pickup signal) by seeing the normal position display mark 35. Has been done. In the above-described configuration, the small-sized monitoring camera 1 is installed in such a manner that the board 2 can be vertically mounted vertically depending on the status of the mounting wall 7 around the place to be monitored. As mentioned above,
The board 2 is installed with the camera unit 3 arranged on the upper side, or, as shown in FIG. 3, the board 2 is mounted on the mounting wall 7 with the camera unit 3 arranged on the lower side of the peripheral circuit unit 4. Install.

For example, as shown in FIG. 6, the small surveillance camera 1 is installed in a normal placement mode 1X1 as shown in FIG. 1 so as not to be conspicuous on the wall of the room 41 to be monitored, or is tilted as shown in FIG. The small surveillance camera 1 is installed in the switching mode 1X2.
In this way, the small surveillance camera 1 can be installed in a relatively inconspicuous position. In particular, when it is desired to monitor the monitored object from near the ceiling, near the floor, or on the floor, the small surveillance camera 1 in the normal position is installed at the mounting position 1X3 near the ceiling, or the small surveillance camera 1 in the inverted manner is installed. Install at the mounting position 1X4 near the floor or on the floor.

If the small surveillance camera 1 is to be installed near the ceiling 43 of the mounting wall 42, as shown in FIGS. 4 and 5, the left attachment member 25L (FIG. 4) and the right attachment member 25R are provided. A small surveillance camera 1 in a mounting mode in which the camera unit 3 is turned over to the left or right by screwing a fixing screw 23 into (FIG. 5).
Is installed at the mounting position 1X6 or 1X7 near the ceiling. Further, the small surveillance camera 1 in the normal mounting mode (FIG. 1) is arranged at the mounting position 1X8 on the ceiling, or the small monitoring camera 1 in the inverted mounting mode (FIG. 3) is mounted at the mounting position 1X9 on the ceiling. it can.

Further, near the side wall 42 of the ceiling 43,
The miniature surveillance camera 1 in the left overturn mounting mode (FIG. 4) or the right overturn mounting mode (FIG. 5) can be installed at the mounting position 1X10 or 1X11. Further, as shown in FIG.
If the small surveillance camera 1 in the inverted installation mode (FIG. 3) or the normal installation mode (FIG. 1) is installed in the angular spaces of A and 42B, the small surveillance camera 1 can be placed in an inconspicuous position in the room. Can be installed. In the same way, a small surveillance camera can be installed on the floor if necessary.

In this way, the small surveillance camera 1 in the normal installation mode (FIG. 1), the inverted installation mode (FIG. 3), the left sideways installation mode (FIG. 4) or the right sideways installation mode (FIG. 5) is monitored. The field of view FLD of the camera unit 3 can be swiveled in a range of 180 ° about the central axis L1 in the installation wall around the desired place, but the field of view of the monitored object can be set. The FLD setting can be made easier.

According to the above construction, by selecting the mounting mode suitable for the condition of the monitoring place according to the condition, the monitored object can be more surely placed within the visual field FLD. It can be projected. Thus, the rotation of the camera unit 3 is limited to the rotation range of the degree of freedom 1 about the central axis L1 of the fixing screw 23, whereby the setting of the visual field FLD can be further facilitated.

By the way, after the small surveillance camera 1 is installed at the mounting position as described above with reference to FIGS. 6 and 7, for example, when the small camera 1 is once removed for repair and inspection and then reattached, Since it is only necessary to adjust the central axis of the screw 23, it is possible to easily reset the setting conditions close to the setting conditions before the repair and inspection.

For example, if a mounting means having three degrees of freedom, such as a pan head, is used, it is complicated to adjust the three axes having three degrees of freedom after repair and inspection. However, according to the above-mentioned configuration, since the turning degree of freedom is 1, the reproducibility of the setting of the visual field FLD can be further improved.

[2] Modification of First Embodiment (2-1) FIGS. 8A and 8B show a modification of the first embodiment of the present invention, and FIGS. As shown by attaching the same reference numerals to the corresponding portions with and, instead of screwing the fixing screw 23 so as to sandwich the mounting plate portion 21 in the screw holes 25A of the attachment members 25U, 25D, 25L, 25R, One end of a drive shaft 41 that penetrates the through hole 22 of the mounting plate portion 21 is fixed to the attachment members 25U to 25R, and the other end is the output shaft 42 of the reversible rotation motor 42.
By connecting to A, the camera unit 3 is connected to the drive shaft 4
It is configured so that it can be rotated about the first rotation center L2.

In this way, the user can change the field of view FLD of the camera unit 3 with high accuracy by rotating the reversible rotation motor 42 as needed. In addition to the configurations of FIGS. 8A and 8B, as shown in FIGS. 9A and 9B, in the case of this embodiment, as shown in FIG. Shaft 41 is bearing 4
1A and the reversible rotary motor 42 is held by the mounting plate 21 by the mounting screw 42B.
It is mounted on a mounting base 42C that is fixedly mounted on the base 1. The connecting gears 43A and 43B may be inserted between the drive shaft 41 and the output shaft 42A of the reversible rotation motor 42. By doing so, the field of view FLD of the camera unit 3 can be set with higher accuracy. ..

(2-2) FIG. 10 shows still another embodiment. In this case, the small surveillance camera 1 stores the camera unit 3 and the peripheral circuit unit 4 in a storage chamber 46 provided in the mounting wall 45. In addition, the substrate 2 allows the storage chamber 4
6 is closed. The board 2 is attached to the mounting wall 45 so as to be openable and closable by a turning support portion 47 formed of, for example, a hinge.
By rotating about 7 as a center, the camera unit 3 and the peripheral circuit unit 4 are drawn out as shown in FIG. 11, and thus, the small surveillance camera is put in a state in which the monitored object in the field of view FLD of the lens 12 can be imaged. 1 can be set.

If the configurations of FIGS. 10 and 11 are installed on the side of a large vehicle, for example, when the large vehicle is driven and driven, a view of the side or rear portion of the vehicle body that causes a blind spot for the driver is provided. When it is necessary to monitor, the monitoring mode shown in FIG. 11 is set, and when it is not necessary to monitor, the small surveillance camera 1 is protected by storing it in the storage state shown in FIG. You can With this configuration, it is possible to realize the small-sized surveillance camera 1 that can further diversify its function in addition to the above-described effects.

(2-3) FIG. 12 shows still another embodiment. In this case, the heater 6 is provided in the case 11 of the camera unit 3 and the case 31 of the peripheral circuit unit 4, respectively.
1 and 62 are provided, and a fan 64 is provided in each of the cases 11 and 31. Thus, when the temperature of the monitoring place is extremely low compared to the operating temperatures of the camera unit 3 and the peripheral circuit unit 4, the heaters 61 and 62 are operated to generate heat and the fan 64 is rotated to generate warm air. As a result, the operations of the camera unit 3 and the peripheral circuit unit 4 are stably maintained.

On the other hand, if the temperature of the place to be monitored is extremely high, the camera unit 3 and the peripheral circuit unit 4 are cooled to an appropriate temperature by driving the fan 64 while the heaters 61 and 62 are not heating. To do. According to the configuration of FIG. 12, even when the small surveillance camera 1 is used under a temperature condition far from the optimum operation temperature,
The camera unit 3 and the peripheral circuit unit 4 can be operated stably, but in doing so, the camera unit 3 and the peripheral circuit unit 4 are mechanically and firmly assembled on the common substrate 2 to keep the heat Alternatively, auxiliary equipment for cooling can be simply and safely equipped.

(2-4) In the case of FIG. 12, the case 11 of the camera unit 3 and the case 3 of the peripheral circuit unit 4 are shown.
Although the heat retaining or cooling means is provided in the inside of the apparatus 1, instead of this, as shown in FIG. 13, an outer case 71 for accommodating the cases 11 and 31 therein is provided on the substrate 2 and the fan is attached to the outer case 71. Attach 72. In addition to this, the case 11 of the camera unit 3 and the case 31 of the peripheral circuit unit 4 are not directly fixed to the substrate 2, but spacers 73 and 74 and the like are inserted, respectively. An air layer is provided between the four as heat insulating means.

In the structure shown in FIG. 13, when the temperature of the place to be monitored is low, an air layer is provided between the substrate 2 and the cases 11 and 31, and between the outer case 71 and the cases 11 and 31. Since the air layer is also provided, the temperatures of the cases 11 and 31 can be kept at an appropriate temperature by the air layer.

On the contrary, when the temperature of the place to be monitored is a little higher than the optimum operating temperature of the camera unit 3 and the peripheral circuit unit 4, the fan 72 is used for case 1
By radiating the temperatures of 1 and 31, the temperatures of the camera unit 3 and the peripheral circuit unit 4 can be maintained at the optimum operating temperature. By doing so, since all the components can be mounted on the common substrate 2, it is possible to easily and safely equip the equipment for heat retention and cooling.

(2-5) In the case of FIGS. 12 and 13,
The case where the equipment for maintaining the temperature of the camera unit 3 and the peripheral circuit unit 4 at the optimum operating temperature is provided has been described. However, instead of or together with this, a waterproof hood is attached on the substrate 2. The small surveillance camera 1 may be used outdoors. Even in this case, since the waterproof hood can be mounted on the common substrate 2, the waterproof hood can be easily and safely equipped.

(2-6) FIG. 14 shows still another embodiment. Especially when it is applied to a crime prevention device, the small surveillance camera 1 is disguised as functioning as a surveillance means to be monitored. It is effective to equip a camouflage means to prevent the person from being wary and alert. In this respect, according to the configuration of FIG. 1, since the camera unit 3 and the peripheral circuit unit 4 are mounted on the common substrate 2, the camera unit 3 and the peripheral circuit unit 4 can be easily stored in, for example, a case of a lighting fixture or a birdhouse. ..

When it is disguised as a lighting fixture, for example, as shown in FIG. 14, for example, a U-shaped fluorescent lamp 71 is attached to the surface of the peripheral circuit unit 4, and the U-shaped fluorescent lamp 71 is attached.
In the transformer 72 for a fluorescent lamp, which is separately provided, the illumination power generated based on the power supplied from the power outlet 73 is supplied to the U-shaped fluorescent lamp 71 through the cord 74. In this way, the small surveillance camera 1 can be disguised as a part of the lighting equipment.

(2-7) In the above-mentioned embodiment, the case where the flat plate-like one is applied as the substrate 2 has been described, but instead of this, as shown in FIG. 15, a portion to which the case 11 of the camera unit 3 is attached. , The peripheral board unit 4 is formed by bending the board 2 so that the heights of the parts to which the case 31 is attached are different from each other, or as shown in FIG. 16, the whole board 2 is formed by stacking the camera unit 3 on the case 31. It may be modified in various ways, for example, by bending it into a U shape.

(2-8) As a method of installing the small surveillance camera in the inconspicuous manner as much as possible, for example, as shown in FIG. 17, the small surveillance camera 1 is installed in front of the entrance door 78 of the residence.
When installing the dome-shaped hood 79 made of a half mirror material so as to cover the small surveillance camera 1 inside, or when installing the small surveillance camera on the office interior wall surface 80 as shown in FIG. When a semi-cylindrical hood 81 made of a mirror material is provided, and as shown in FIG. 19, the small surveillance camera 1 is installed in a water tank,
The hood 82 may be made inconspicuous by using a hood such as a hood 82 made of a waterproof material.

(2-9) In the embodiment shown in FIGS. 1 to 19, the camera unit 3 is mounted on the mounting plate 21 projecting forward from the rectangular base plate 1 so that the camera unit 3 can be rotated in the plate surface direction. Although the attached structure is described, instead of this, as shown in FIG. 20, the mounting plate portion 21X having a cross-section of a U-shaped cross section is formed so that the opposing projecting plate portions 21XA and 21XB are opposed to each other at both positions in the width direction of the substrate 2. However, it is arranged so as to project forward and is fixed to the surface of the substrate 2, and the mounting plate portion 2 that faces the mounting plate portion 2
Even if the case 11 of the camera unit 3 is rotatably attached to the 1XA and 21XB with the fixing screw 21XC provided so as to penetrate the thickness, the same effect as the above case is obtained. be able to.

[3] Second Embodiment (3-1) FIGS. 21 and 22 show a second embodiment. As shown in FIG.
On the board 2 of the small surveillance camera 1, screw holes 51L1 and 5L are provided in the peripheral circuit unit 4 side end portion thereof.
1L2 is used to connect the substrate 2 to the substrate rotating motor 85 of the substrate rotating portion 84.

The board rotating motor 85 is the ceiling mounting base 8.
It is fixed to the lower surface of 6 by a mounting screw 87, and an output gear 88 is fixed to its output shaft 85A. A cylindrical rotational force transmitting portion 89 is arranged on the ceiling mounting base 86 so as to be juxtaposed with the substrate rotating motor 85, and an upper end portion thereof is integrally fixed to the ceiling mounting base 86 by, for example, welding. ing.

A transmission shaft 91, whose upper and lower ends are rotatably held by bearings 90A and 90B, is provided on the central axis of the rotational force transmission part 89, and the transmission is attached to the upper end of the transmission shaft 91. By engaging the gear 92 with the output gear 88, the output shaft 8 of the substrate rotating motor 85
The turning force of 5A can be taken out as a rotation output of the substrate rotating portion 84 from a rotation output shaft portion 94 connected to a lower end of the transmission shaft 91 by a coupling 93 via a transmission gear 92 and a transmission shaft 91. It is done like this.

The rotation output shaft portion 94 is coupled to the prismatic coupling member 96 by a mounting screw 95, and coupling screws 97B and 97A are attached to a vertical side surface of the coupling member 96 through screw holes 5L1 and 5L2 of the substrate 2. By being screwed in, the substrate 2 is rotated about the central axis of the rotation output shaft portion 94 while maintaining the vertically extended posture.

The camera unit 2 of the small surveillance camera 1
As described above with reference to FIG. 20, a mounting plate portion 21X having a U-shaped cross section is provided, and the mounting plate portion 21X protrudes while maintaining a state of being parallel to each other.
The bottom plate portion 21XG for connecting the above is fixed on the substrate 2 by, for example, a screw in a state of being in contact with the substrate 2.

A bearing through hole 21XE is formed in the center of the tip of the pair of projecting plate portions 21XB and 21XA, through which fixing screws 21XC and 21XD are inserted so as to face each other in the horizontal direction.
And 21XF are drilled, thus fixing screws 21XC
And 21XD are attached to the case 11 of the camera unit 3 as attachment members 25L and 25R (FIG. 1).
The camera unit 3 by screwing it into the bearing through hole 2
It can be fixed in a vertically rotated position about 1XE and 21XF while being rotated as needed.

21 and 22, the ceiling mounting base 86 to be mounted is mounted on the ceiling using the mounting holes 86X. In this mounted state, the rotation output shaft portion 94 of the substrate rotation portion 84 is extended in a substantially vertical direction, so that the rotation output shaft portion of the small-sized monitoring camera 1 is maintained while the substrate 2 is maintained in the vertically extended posture. It is possible to rotate about 94 as a center by a rotation amount corresponding to the rotation drive amount of the substrate rotation motor 85.

As a result, the camera unit 3 has its field of view F.
The direction of the LD can be changed around the center line of the rotation output shaft portion 94. In addition to this, the small surveillance camera 1 has its own function of fixing screws 21XC and 21X.
By loosening D, the camera unit 3 can be vertically rotated about the bearing through holes 21XE and 21XF for extending the camera unit 3 in the horizontal direction.
The direction of D can be changed to the vertical direction.

21 and 22, the range in which the field of view FLD of the camera unit 3 can monitor the range of the camera unit 3 in the vertical turning direction by manually operating the fixing screws 21XC and 21XD. It can be set as necessary by setting the turning position, and the direction of the horizontal turning direction of the visual field FLD set in the vertical turning direction can be changed by driving the substrate turning motor 85. It is possible to further simplify the setting of the camera unit 3 for the object to be monitored which requires result monitoring.

(3-2) In the embodiment shown in FIGS. 21 and 22, the substrate 2 of the small surveillance camera 1 is automatically moved by the substrate rotating motor 85 and the turning power transmission unit 89 attached to the ceiling mounting base 86. However, instead of this, as shown in FIG. 23, the fixing of the connecting member 96 to the ceiling mounting base 86, and the fixing screw 99 by the connecting member 96.
It may be manually screwed into.

In this way, the operator sets the right and left direction of the substrate 2 to a predetermined position, and the rear fixing screw 9
By tightening 9 into the fixing member 96, the small surveillance camera 1 can be easily attached to the ceiling while maintaining the set left-right orientation.
(3-3) Also in the case of this embodiment, FIGS.
The modifications as described above for 6 can be applied as necessary.

[4] Third Embodiment (4-1) FIGS. 24 and 25 show a third embodiment. As shown by giving the same reference numerals to corresponding parts in FIG. 22,
In FIG. 22, the camera unit 3 is fixed with screws 21X for fixing.
24, the rotational position of the camera unit 3 in the vertical turning direction is fixed by inserting C and 21XD through the bearing through holes 21XE and 21XF and screwing them into the camera unit. In the case of FIG. 25, this is configured so that it can be automatically rotated by a camera unit rotating motor 101.

The camera unit rotating motor 101 is mounted on one of the pair of projecting plate portions 21XA and 21XB of the mounting plate portion 21X, for example, 21XB by a mounting screw 102, and the output shaft of the camera unit rotating motor 101. 101A is inserted into the attachment member 25L provided in the case 11 through the bearing hole 103 formed in the projecting plate portion 21XB, thus fixing screw 10
4 to attach the attachment member 25L to the output shaft 101A.
Sticks together with.

Further, the rotation shaft pin 106 is inserted into the attachment 25R of the case 11 through the bearing hole 105 formed in the other projecting plate portion 21XA, and the attachment member 25R has the fixing screw 107 at the tip thereof. It is fixed integrally by. 24 and 25, when the camera unit rotating motor 101 is driven, the output shaft 101A of the camera unit 3 is the case 1 of the camera unit 3.
1, the field of view FLD of the lens 12 of the camera unit 3 is rotated in the vertical turning direction.

24 and 25, the substrate 2 of the small surveillance camera 1 is rotated in the left-right direction by the substrate rotating motor 85 of the substrate rotating portion 84, and the camera unit 3 is mounted on the camera. It is rotated in the vertical turning direction by a unit turning motor 101. Therefore, since the visual field FLD of the camera unit 3 can be automatically rotated in the horizontal direction and the vertical direction, the positioning of the visual field FLD can be further facilitated.

(4-2) FIG. 26 shows another embodiment. In FIG. 24 and FIG. 25, the substrate rotating motor 85 is omitted and replaced with the fixing screw 99 described above with reference to FIG.
To use. According to the configuration of FIG. 26, the substrate 2 of the small-sized surveillance camera 1 can be set to a predetermined rotational position in the left-right swivel direction as needed by manually operating the fixing screw 99, and the camera unit can be set. Rotating motor 101
Since the camera unit 3 can be rotated in the vertical turning direction by using, the field of view FL of the camera unit 3 can be increased.
The D can be easily positioned.

[5] Fourth Embodiment (5-1) FIG. 27 shows a fourth embodiment. The camera unit rotating motor 110 is mounted on the board 2 in the vicinity of the mounting position of the camera unit 3 by a mounting screw 111. It is then mounted on the mounting base 112 mounted on the substrate 2 by mounting screws 113.

The board 2 is mounted with a ceiling mounting base 115 having an L-shaped cross section by means of a mounting screw 114 using the screw holes 5L1 and 5L2 provided at the end on the peripheral circuit unit 4 side. By mounting the ceiling mounting base 115 on the ceiling by means of 115X, the substrate 2 can be held in a substantially vertically suspended state. The output shaft 110A of the motor 110 for rotating the camera unit is projected downward, and the downward projecting end thereof is screwed to an attachment member 21H provided inside the connecting plate portion of the mounting plate portion 21X.

The mounting plate portion 21X is fixed by the fixing screws 21XC and 21XD which are inserted through the bearing through holes 21XE and 21F formed in the pair of projecting plate portions 21XA and 21XB in the same manner as described above with reference to FIG. The bearing through holes 21XE and 21XF can be positioned and held at a predetermined rotational position in the front-rear turning direction.

In the configuration of FIG. 27, the camera unit rotating motor 110 can automatically rotate the mounting plate portion 21X, and hence the camera unit 3, in the left-right direction.
In addition to this, the camera unit 3 for the mounting plate portion 21X
The rotational position of can be repositioned to an arbitrary rotational position as needed with the fixing screws 21XC and 21XD loosened.

Thus, according to the construction of FIG. 27, the field of view FLD of the camera unit 3 is set to the motor 1 for rotating the camera unit.
It can be positioned in the left-right direction according to the amount of rotation of 10, and the field of view FL can be determined by using the fixing screws 21XC and 21XD.
Since D can be positioned at a predetermined rotation position in the vertical direction, the field of view FLD can be easily positioned in a predetermined direction as required. Since the main parts are mounted on the substrate 2 in this way, the small surveillance camera 1 can be installed more easily.

(5-2) FIG. 28 shows another embodiment of FIG. 27, in which the screw holes 5L1, 5L2 and 5U are used.
The substrate 2 is directly attached to the ceiling by using 1, 5U2. In this case, the motor 110 for rotating the camera unit is mounted on the substrate 2 by the mounting screw 115 so that the output shaft 110A thereof projects downward, and the downward projecting end of the output shaft 110A is carried out in the same manner as in FIG. The mounting plate portion 21X holding the camera unit 3 so as to be rotatable in the front-rear direction is integrally fixed so as to be rotatable in the left-right direction.

According to the configuration of FIG. 28, the camera unit 3
The field of view FLD can be set to a predetermined rotation position in the left-right direction by the camera unit rotation motor 110, and the rotation position in the front-rear direction can be set by the fixing screws 21XC and 21XD. Thus, the field of view FLD can be easily set. In this way, by making it possible to mount all the components on the board 2, the setting of the small-sized monitoring camera 1 can be made sufficiently simple in practical use.

(5-3) FIG. 29 shows still another embodiment of FIG. 27. As shown by attaching the same reference numerals to corresponding portions with FIG. The mounting plate portion 21X is attached to the protruding end of the output shaft 110A of the attached camera unit rotating motor 110.

In addition to this, the protruding plate portion 2 of the mounting plate portion 21X
In the same manner as shown in FIG. 25, the camera unit rotating motor 101 is attached to the 1XB with the attaching screw 102, and the output shaft 101A passes through the bearing hole 103 formed in the projecting plate portion 21XB. It is fixed to the attachment member 25L provided inside the camera unit 3 with a fixing screw 104. Projection plate 21XA
A bearing hole 105 is formed at a position facing the bearing hole 103 of the above, a rotary shaft pin 106 is inserted so as to pass through the bearing hole 105, and the insertion end thereof is provided in the camera unit 3. It is fixed to the attached attachment member 25R by a fixing screw 107.

According to the configuration of FIG. 29, the camera unit 3
The horizontal direction of the field of view FLD can be set by the camera unit rotating motor 110 as required, and
The rotational position of the visual field FLD of the camera unit 3 in the front-rear direction can be positioned at a rotational position as required by the camera unit rotational motor 101. Thus Figure 2
According to the configuration of 9, the field of view of the camera unit 3 can be set more easily, and all parts can be mounted on the substrate 2, so that the small surveillance camera 1
Can be installed easily.

[6] Fifth Embodiment (6-1) FIGS. 30 to 32 show a fifth embodiment. In this case, the small surveillance camera 1 has the same reference numerals as those in FIG. 28. In addition, by mounting the camera unit rotating motor 110 on the substrate 2 to be installed, for example, on the lower surface of the body of the aircraft, the output shaft 11 of the camera unit is rotated.
The mounting plate portion 21X can be rotated by 0A. A camera unit rotating motor 101 for rotating the camera unit 3 in the front-rear direction is mounted on one of the protruding plate portions 21XA of the mounting plate portion 21X.

In the case of this embodiment, a mounting structure for mounting the camera unit rotating motor 101 on the projecting plate portion 21XA so as to rotate the camera unit 3 and the camera unit 3 is mounted so as to be rotatable on the mounting plate portion 21X. The structure described above with reference to FIG. 25 is applied to the mounting structure for this purpose, and thus the field of view F of the camera unit 3 is
The direction of the LD goes from the front to the bottom right
It is designed so that it can be rotated over a rotation range close to 180 °. The mounting plate portion 21X is provided with a rotation position detection portion 114 that detects the rotation position of the camera unit 3.

As shown in FIG. 31, the rotational position detecting portion 114 includes a photodetector 115 provided on the inner surface of the connecting plate portion of the mounting plate portion 21X and a camera unit 3 facing the connecting plate portion 21G. It is composed of a reflection mirror 116 disposed on the lower surface. In the photodetector 115, a photodetector element 117A for detecting the direction directly below, a photodetector element 117B for detecting the front turning limit and a photodetector element 117C for detecting the rearward turning limit, each having a light emitting element and a light receiving element, are mounted on a mounting substrate 118. Has been.

When the field of view FLD of the camera unit 3 is directed downward as indicated by the symbol K0, the downward detection photodetector element 117A outputs the detection light L0 emitted from the reflection mirror 1.
It is positioned at a position where it is reflected by 16 and returns to the light receiving element. The forward rotation limit detection photodetection element 117B is positioned so that the detection light L1 emitted from the emission element is returned to the light receiving element when the camera unit 3 is rotated to the front rotation allowable position. There is.

Further, the rear rotation limit detection photodetector element 117
As indicated by an arrow K2, C indicates that the detection light L2 emitted from the emitting element is reflected by the reflection mirror 116 and returned to the light receiving element when the camera unit 3 is rotated to the rearward rotation limit position. It is positioned at a position on the mounting substrate 118.

As shown in FIG. 32, the detection signals S0, S1 and S2 of the photodetecting element 117A for detecting the direction directly below, the photodetecting element 117 for detecting the front turning limit and the photodetecting element 117 for detecting the rear turning limit are detected as shown in FIG. The detection input signals S10, S supplied to the circuit unit 4 and supplied via the power / control cable 15.
11 and S12 are supplied to the signal processing device 120,
As a result, the video signal V obtained from the camera unit 3
Based on D1, the display mode of the video signal VD2 supplied to the signal processing device 120 via the peripheral circuit unit 4 and the video signal cable 14 is controlled.

In the structure shown in FIG. 30, the mounting holes 5L1, 5L2 and 5 are formed on the lower surface of the object to be mounted, that is, the aircraft body.
If the camera unit rotating motor 101 is driven with the substrate 2 attached using U1 and 5U2,
The field of view FLD of the camera unit 3 extends from the direction facing the front side of the substrate 2 (for example, the nose direction of the left aircraft) to the rear direction (direction of the tail of the left aircraft). Can be varied over a wide range.

The field of view FLD can be rotated in the left-right direction by driving the camera unit rotating motor 110, and thus the field of view FL of the camera unit 3 as a whole.
D can be easily set in a predetermined direction as needed. However, when the camera unit 3 is rotated from the front position to the rear position through the position directly below, when the camera unit 3 can capture a normal image through the field of view FLD while rotating to the front position. If the field of view FLD passes through the position directly below and is rotated to the rear position, the screen that the camera unit 3 can capture through the field of view is the same as when the top and bottom and right and left of the normal image are switched (this Is called a reverse position image).

If such a reverse position image is displayed on the monitor as it is, the observer of the monitor may feel inconvenience, and in some cases, the monitoring decision may be erroneous. In order to solve this problem, in the case of this embodiment, when the camera unit 3 picks up the reverse position image, it can be displayed on the monitor as a normal image so that it can be displayed on the monitor.
At 20, the video signal is processed. Video signal VD
2 is converted into a digital signal in the analog / digital conversion circuit 121 and then written in the frame memory 123 under the control of the write control circuit 122.

The video signal written in the frame memory 123 is read out as a digital read video signal VD4 under the control of the read control circuit 124, and the digital / digital signal is read.
The analog video signal is converted into the analog video signal VD5 in the analog conversion circuit and then supplied to the video processing circuit 126. The video processing circuit 126 processes the analog video signal VD5 as necessary, and one of the processes is the monitor 1
On the monitor 27, the monitor 127 can monitor the scene currently being captured by the camera unit 3.

In addition to the above configuration, the input detection signal S10 input on the basis of the detection signal S0 of the photodetecting element 117A for detecting the direction directly below is a clock input end of the forward / reverse position discriminating circuit 130 which is a JK flip-flop circuit, for example. CK
, And each time the input detection signal S10 is obtained, Q
The logic level of the discrimination output obtained at the output end is switched.

In the case of this embodiment, when the camera unit 3 is reset from the rearward rotating position to the frontward rotating position through the position directly below, and when the camera unit 3 passes directly downward, it is for detecting the direction directly below. The input detection signal S10 input based on the detection signal S0 obtained from the photodetector 117A.
Accordingly, the normal position / reverse position discriminating circuit 130 outputs the discrimination output S21 of the logic "0" level.

In this state, when the camera unit 3 is again set from the front pivot position to the bottom pivot position and back to the rear pivot position, it is input based on the detection signal S0 obtained from the photo detector element 117A for detecting the bottom direction. The normal position / reverse position discriminating circuit 130 switches the logic level of the discrimination output S21 from the logic "0" to the logic "1" in response to the input detection signal S10. The discriminating output S21 of the normal position / reverse position discriminating circuit 130 is the order of the D flip-flop circuit.
It is given to the D input terminal of the inverse control signal forming circuit 131.

At the clock input terminal CK of the forward / reverse control signal forming circuit 131, the synchronizing signal S22 sent from the synchronizing separating circuit 132 which receives the video signal VD2 is fed to the inverter 1.
33, and thus the vertical synchronization signal S2
At the timing when 2 is obtained, the logic level of the discrimination output S21 is read by the forward / reverse control signal forming circuit 131.

Thus, when the camera unit 3 is in the forward rotation position, the discrimination output S21 which becomes the logical "0" level is written in the forward / reverse control signal forming circuit 131 at the timing when the vertical synchronizing signal S22 is obtained. The Q output of logic "0" is supplied to the read control circuit 124 as the forward / reverse control signal S22. The frame memory 123 is composed of a two-port memory capable of independently writing or reading a shared memory array for writing and reading, and a first-in first-out (FIFO, FIRST-IN).
-FIRST-OUT) operation and first in last out (FILO, FIRST-IN-LAST-OU)
T) operation can be selected according to the logic level of the forward / reverse control signal S22 applied to the read control circuit 124.

Thus, the frame memory 123 writes the normal position image in the memory array as a fast-in-first operation when the forward / reverse control signal S22 is at the logic "0" level, and reads the normal position image as it is to the monitor 127. Can be displayed. On the other hand, when the forward / reverse control signal S22 is switched to the logic "1" level, the normal position image read in the memory array is read out by the first-in-last-out operation, so that the normal position image is read out. The image is read out as an inverted position image which is horizontally inverted and vertically inverted and is displayed on the monitor 127.

As a result, the video signal written in the frame memory 123 is displayed on the monitor 127 as a normal position image.
Displayed above. When the camera unit 3 is turned to the rearward turning position in this state, the forward / reverse control signal S22 of the forward / reverse control signal forming circuit 131 is switched to the logic "1" level, and the frame memory 123 is read. By performing a first-in last-out operation by the control circuit 124, the reverse position image obtained by horizontally reversing and vertically reversing the image captured by the camera unit 3 by the visual field FLD is displayed on the monitor 127.

As described above, according to the configurations of FIGS. 30 to 32, even when the camera unit 3 picks up a so-called "upside-down picture" by the rotation operation of the camera unit, this is monitored as a normal image. Can be displayed on the camera. The input detection signal S11 is applied to the reset terminal R of the forward / reverse position discriminating circuit 130 based on the detection signal S1 of the front rotation limit detection photodetector 117B, whereby the camera unit 3 exceeds the front rotation limit. When it is rotated up to the rotating position, the normal position / reverse position judging circuit 130 is reset so that the judgment output S21 is forcibly reset to the logic "1" level.

By doing so, even if the state of the forward position / reverse position discriminating circuit 130 is in the reverse setting state for some reason when the camera unit 3 is in the forward rotation position, it is set to the correct state. Can be modified to In the case of this embodiment, the input detection signal S1 input based on the front and rear rotation limit detection photodetection elements S1 and S2.
1 and the input detection signal S11 input based on S12
And S12 are motor control circuits 14 for rotating the camera unit.
0, and the drive control signal S31 sent from the camera unit rotation motor control circuit 140 is used as a drive signal S32 via the peripheral circuit unit 4 to drive and control the camera unit rotation motor 101 to rotate the camera unit. The drive motor 101 is prevented from further rotating in the front or rear rotation direction.

(6-2) In FIGS. 30 to 32, the case where the small camera 1 is mounted on the lower surface of the body of the aircraft has been described. However, the present invention is not limited to this, and it is mounted on the lower surface of other mounting objects. Widely applicable to Furthermore, not only the lower surface but also the upper surface, the side surface and the like of the object to be mounted can obtain the same effect as the above case.

[0087]

As described above, according to the present invention, the camera unit and the peripheral circuit unit are mounted on a common substrate, and the camera unit is supported so as to be rotatable on a predetermined central axis. Since the field of view can be adjusted as needed, it is possible to easily realize a small-sized surveillance camera that can be easily installed in various modes so as to adapt to the mounting environment of the mounting location.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a small surveillance camera according to the present invention.

FIG. 2 is an enlarged exploded perspective view for explaining a holding mechanism of the camera unit shown in FIG.

FIG. 3 is a front view showing a state in which a camera unit is attached to a substrate in an inverted attachment manner.

FIG. 4 is a front view showing a state in which a camera unit is mounted on a substrate in a sideways mounting manner.

FIG. 5 is a front view showing a state in which the camera unit is mounted on the substrate in a right sideways mounting manner.

FIG. 6 is a schematic diagram for explaining a method of installing a small surveillance camera at each surveillance location in a room.

FIG. 7 is a schematic diagram used for explaining a method of installing a small surveillance camera at a corner surveillance location in a room.

8A is a front view showing a main part of a small surveillance camera in which a camera unit is directly rotated by a reversible rotation motor, and FIG. 8B is a camera in which an output shaft of the reversible rotation motor of FIG. It is sectional drawing which shows the detailed structure for couple | bonding with a unit.

9A is a front view showing a main part of a small surveillance camera in which a camera unit is rotated by a reversible rotation motor, and FIG. 9B is a camera in which an output shaft of the reversible rotation motor in FIG. It is sectional drawing which shows the detailed structure for couple | bonding with a unit.

FIG. 10 is a perspective view showing an embodiment in which a small surveillance camera is installed in a large automobile.

11 is a perspective view showing a state where the substrate of FIG. 10 is opened.

FIG. 12 is a perspective view showing a small surveillance camera equipped with a temperature adjusting means.

FIG. 13 is a perspective view showing a small surveillance camera equipped with a temperature adjusting means.

FIG. 14 is a perspective view showing a small surveillance camera disguised as a lighting fixture.

FIG. 15 is a side view showing another embodiment of the substrate.

FIG. 16 is a side view showing still another embodiment of the substrate.

FIG. 17 is a perspective view showing an application example in which a small surveillance camera is installed at the entrance of a house.

FIG. 18 is a perspective view showing an application example when the small-sized surveillance camera is applied to an office of an office.

FIG. 19 is a perspective view showing an application example in which a small surveillance camera is applied to an aquarium.

FIG. 20 is a perspective view showing a small surveillance camera using a U-shaped mounting plate portion.

FIG. 21 is a side view showing a partial cross-section of a second embodiment of the small-sized monitoring camera according to the present invention in which the small-sized monitoring camera is rotated by a substrate rotating motor.

22 is a front view of FIG. 21. FIG.

FIG. 23 is a side view partially showing a cross section of a small-sized monitoring camera in which the rotation position of the substrate can be manually set.

FIG. 24 is a front view showing a third embodiment of the surveillance camera according to the present invention in which the substrate and the camera unit are rotated by a motor.

25 is a sectional view showing a drive mechanism of the camera unit shown in FIG. 24.

FIG. 26 is a front view showing another embodiment in which the rotation position of the substrate in FIG. 24 can be manually set.

FIG. 27 is a side view showing a fourth embodiment of the small surveillance camera according to the present invention in which a motor for rotating the camera unit is mounted on the substrate.

FIG. 28 is a side view showing a small-sized surveillance camera in which a board is attached to an attachment object in the horizontal direction.

FIG. 29 is a front view showing a small surveillance camera in which a camera unit mounting plate portion rotating motor and a camera unit rotating motor are mounted on a substrate.

FIG. 30 is a fifth embodiment of a small surveillance camera according to the present invention in which a board for mounting a camera unit mounting plate rotation motor and a camera unit rotation motor on a board is mounted on the lower surface of a mounting target; It is a side view shown.

FIG. 31 is a schematic diagram showing a detailed configuration of a rotation position detection unit of FIG. 30.

32 is a block diagram showing a configuration of the signal processing device of FIG. 30.

[Explanation of symbols]

1 ... Small surveillance camera, 2 ... Board, 3 ... Camera unit, 4 ... Peripheral circuit unit, 11 ... Case, 2
1, 21X ... Mounting plate part, 21XA, 21XB ... Projection plate part, 21XC ... Fixing screw, 21XD ... Connection plate part, 85 ... Board rotating motor, 89 ... Turning power transmission part, 96 ... ... Coupling member, 99 ... Fixing screw, 101 ...
... Camera unit rotation motor, 106 ... Rotation shaft pin, 110 ... Camera unit mounting plate rotation motor,
114 ... Rotational position detector, 115 ... Photodetector, 11
6 ... Reflective mirror, 117A ... Photodetector for downward detection, 117B, 117C ... Photodetector for detecting forward / backward rotation limit, 120 ... Signal processing device, 123 ... Frame memory, 130 ... Forward / reverse position determination circuit, 1
31 ... Forward / reverse control signal forming circuit, 122 ... Write control circuit, 124 ... Read control circuit.

Claims (7)

[Claims] 1. A peripheral unit including a camera unit for converting an image formed on a photoelectric conversion element through a lens into an electric image pickup signal, and a signal conversion means for receiving the image pickup signal and converting the image signal into a video signal. A circuit unit, a board on which the case for the camera unit and the case for the peripheral circuit unit are commonly mounted, and a camera unit for supporting the camera unit on the board so that the camera unit can be rotated about a predetermined central axis. A small surveillance camera characterized by comprising a support portion. 2. The camera unit supporting portion is 90 °, 180 °, or 90 ° with respect to the scanning direction of the camera unit.
The miniature surveillance camera according to claim 1, which can be held at a position rotated by 270 °. 3. The miniature surveillance camera according to claim 1, wherein the camera unit has a visible display mark indicating the scanning direction. 4. The miniature surveillance camera according to claim 1, wherein the camera unit support portion has a reversible rotation motor for rotating the camera unit about the central axis. 5. A miniature surveillance camera according to claim 4, wherein the output shaft of said reversible rotary motor is connected to said camera unit via a gear. 6. The miniature surveillance camera according to claim 1, further comprising a substrate rotation monitor for rotating the substrate. 7. A signal processing device for receiving the video signal and switching a display mode on a monitor based on the video signal in accordance with a rotational position of the camera unit. The small surveillance camera described in the item.