KR101238248B1 - monitoring camera - Google Patents

Abstract

Disclosed is a surveillance camera having a rotation controller capable of adjusting a photographing direction or angle. The surveillance camera includes a front panel having an opening; A camera housing installed to be partially exposed to the outside through the opening and having a lens mounted therein; And at least one rotation control unit for rotating the camera housing within a range of a predetermined angle; The rotation control unit includes a motor installed in the front panel, a gear unit for transmitting the rotational force of the motor to the camera housing to rotate the camera housing, and the camera housing rotates over a certain range in contact with the front panel when the camera housing rotates by the gear unit. A stopper for limiting the operation, and a shock absorbing portion for allowing the camera housing to rotate further within a certain degree without stopping immediately when the rotation of the camera housing is limited.

Surveillance Camera, Camera Housing, Left and Right, Rotation, Stopper, Shock Absorber, Bar

Description

Monitoring camera

1 is a partial perspective view showing the interior of a conventional combined domed surveillance camera shown with some parts removed for illustrative purposes.

FIG. 2 is a partial perspective view of a circular opening of the front panel of the surveillance camera shown in FIG. 1. FIG.

Figure 3 is an exploded perspective view of the combined dome surveillance camera according to the present invention.

4 is a partial perspective view showing the interior of the surveillance camera shown in FIG. 3, with some parts removed for illustrative purposes.

5 and 6 are partial perspective views illustrating the left and right rotation adjustment operation of the surveillance camera shown in FIG.

FIG. 7 is a partial perspective view of a circular opening of the front panel of the surveillance camera shown in FIG. 3. FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

100: surveillance camera 105: front panel

110: camera housing 111, 112: hemispherical cover

115: tilt direction rotation control unit 120: lens holder

125: lens 132: tilt motor

151: fan rotation control unit 152: fan motor

154: fan gear unit 170: fan stopper

172, 174 protrusion 180: buffer part

181, 182: flexible bar

The present invention relates to a surveillance camera used in a closed circuit surveillance apparatus, and more particularly, to a surveillance camera having a rotation control unit that can adjust the shooting direction or angle.

Generally, in closed houses, department stores, banks, exhibition halls, factories, etc., a closed circuit television (CCTV) system, which is a closed circuit monitoring device, is installed to prevent theft or to easily check the operation status and process flow of the machine. I can do it.

Such a CCTV system captures a plurality of surveillance areas to be managed by a surveillance camera installed in each surveillance area, and transmits the captured images to a monitor installed in an office for monitoring through the monitor, or, if necessary, only a desired scene of a VCR (video). record using a cassette recorder).

In addition, the CCTV system may install an optical sensor device in the surveillance area to automatically record the image transmitted from the surveillance camera using the VCR when the intrusion is confirmed.

Surveillance cameras used in such a CCTV system is a fixed camera capable of monitoring only a designated area within the surveillance area, or a fan rotation control unit for controlling rotation in the left and right directions so as to monitor the entire area within the surveillance area. A rotating camera having a tilt direction control unit for controlling rotation is used.

Since the fixed camera is fixedly installed so that switching of the shooting direction or angle is impossible, there is a problem in that the camera must be installed at a plurality of positions by dividing the monitoring area when the monitoring area is to be wide or the space is divided.

On the contrary, the rotatable camera can adjust the shooting direction or angle of the camera up and down and / or left and right within a predetermined range by the user's remote wireless operation or wired operation or a set program. Even if you want to monitor the compartments, you can monitor with one camera without having to install cameras in multiple locations. Therefore, in recent years, the use of a rotating camera is increasing.

1 is a partial perspective view showing the inside of a conventional combination dome type surveillance camera 1 having a fan rotation control unit as a rotation type surveillance camera.

As shown in FIG. 1, the conventional combined dome type surveillance camera 1 includes a front panel 5, a camera housing 10, and a fan rotation control unit 51.

The front panel 5 forms an exterior of the surveillance camera 1, and has a circular opening 7 for projecting the front portion of the camera housing 10 to the outside.

The camera housing 10 is composed of first and second hemispherical covers 11 and 12 connected to each other in the form of a coupling dome by fixing means such as screws.

The upper and lower support protrusions (not shown) of the first and second hemispherical covers 11 and 12 are formed only near the upper and lower portions of the circular opening 7 of the front panel 5; It is rotatably supported in the support hole (not shown) of the (not shown).

On the front surface between the first and second hemispherical covers 11 and 12, a lens cover (not shown) having a lens window (not shown) is provided.

In addition, a lens holder (not shown) in the form of a hemispherical housing is disposed inside the first and second hemispherical covers 11 and 12 so that a lens (not shown) is exposed to the front through the lens window of the lens cover. It is. The lens holder is moved upward and downward in a range of a predetermined angle along the inner circumferential surfaces of the first and second hemispherical covers 11 and 12 by the tilt motor 32 of the tilt direction rotation control unit 15 (arrow A in FIG. 1). , A ') in the vertical direction), so that the lens installed in the lens holder is also rotated in the vertical direction through the lens window.

The fan rotation control unit 51 has a predetermined angle in the left and right directions (arrow (A, A ') direction of FIG. 1) with respect to the upper and lower support parts 8 of the camera housing 10 equipped with a lens holder for fixing the lens. It rotates and is equipped with the fan motor 52, the fan gear part 54, and the fan stopper 70. As shown in FIG.

The fan motor 52 is fixed to the fan motor fixing bracket 9 formed on the rear surface of the front panel 5.

The fan gear portion 54 is a worm wheel 56 having an worm gear 55 formed on the shaft 53 of the fan motor 52, and an arc gear 57 having an arc gear 58 engaged with the worm gear 55. ), And converts and rotates the rotational force of the fan motor 52 in the vertical direction and transmits it to the camera housing 10.

The worm wheel 56 rotates integrally with the camera housing 10 by receiving and fixing lower support protrusions of the first and second hemispherical covers 11 and 12 of the camera housing 10 in fixing holes (not shown). do.

The fan stopper 70 is for limiting the upper left rotational range or the upper right rotational range of the camera housing 10, and protrudes outward from the lower portions of the first and second hemispherical covers 11 and 12 of the camera housing 10, respectively. It consists of the first and second protrusions 72 and 74 formed. The first and second protrusions 72 and 74 of the fan motor 52 in which the camera housing 10 is transmitted through the worm gear 55 of the fan gear unit 54 and the arc gear 57 of the worm wheel 56 are transferred. The rotation of the camera housing 10 is limited by contact with the edge 7 '(see FIG. 2) of the circular opening 7 of the front panel 5 when rotating to the left or right over a predetermined range by the rotational force.

Therefore, in order to rotate the lens from side to side, when the fan motor 52 is driven, the rotational force of the fan motor 52 is transmitted to the arc gear 58 of the arc gear 57 through the worm gear 55. As a result, the camera housing 10 is rotated by the worm wheel 56.

At this time, when the camera housing 10 rotates to the left or the right over a predetermined range, the first protrusion 72 or the second protrusion 74 of the fan stopper 70 is the circular opening 7 of the front panel 5. Is blocked in contact with the edge 7 'of the camera, thereby limiting the rotation of the camera housing 10.

However, the conventional surveillance camera 1 configured as described above has the first projection 72 of the fan stopper 70 when controlling the camera housing 10 to be rotated to the left or the right by a user's remote control operation or a set program. ) Or the moment when the second projection 74 is blocked by the edge 7 'of the circular opening 7 of the front panel 5, the fan motor 52 may cause It may be driven for a predetermined time without being stopped or reversed immediately.

In this case, the worm gear 55 of the fan gear part 54 continues to rotate with the arc gear 58 of the arc gear 57 by the driving force of the fan motor 52, but the camera housing 10 is the first projection. Since 72 or the second projection 74 and the edge 7 'of the circular opening 7 do not rotate, the worm gear 55 and the arc gear 58 are driven by the driving force of the fan motor 52. In addition, gear bites can occur that prevent the gears from being properly engaged and pinching each other.

When such a bite occurs in a small amount, the fan motor 52 is automatically released by the driving force of the fan motor 52 when the fan motor 52 is reversed again by the user's remote control operation or the control of a set program. If generated, it is not released even by the driving force of the fan motor 52. In this case, if the fan motor 52 is excessively driven to release the gear bite, the fan motor 52 may be damaged by overload. In addition, in this case, if the gear bite is not released, a problem arises in that the user directly visits the remote site to replace the gear bite and replace or repair the surveillance camera 1.

The present invention has been made to solve the above problems, an object of the present invention is to prevent the gear bite to rotate the camera housing by the stopper limiting the rotation range of the camera housing when the left and right rotation control. It is to provide a surveillance camera having a rotation control unit.

Surveillance camera according to an embodiment of the present invention for achieving the above object, the front panel having an opening; A camera housing in which a part is installed to be exposed to the outside through an opening and a lens is mounted therein; And at least one rotation control unit for rotating the camera housing within a range of a predetermined angle; The rotation control unit includes a motor installed in the front panel, a gear unit for transmitting the rotational force of the motor to the camera housing to rotate the camera housing, and the camera housing rotates over a certain range in contact with the front panel when the camera housing rotates by the gear unit. And a stopper for limiting the operation, and a buffer for allowing the camera housing to rotate further within a certain degree without stopping immediately when the rotation of the camera housing is limited.

The stopper may be composed of at least one pair of protrusions protruding outwardly at a distance from the camera housing, and the buffer part may be configured of at least one pair of flexible bars formed on the front panel opposite to the protrusions of the stopper.

The stopper may further comprise at least a pair of reinforcement portions formed in the front panel at regular intervals to prevent the flexible bar from moving beyond a certain elastic limit.

Each of the pair of flexible bars is preferably formed in a pair of cutout grooves formed at the edge of the opening of the front panel opposite to the protrusion of the stopper.

In this case, the gear unit may include a worm gear coaxially formed on the shaft of the motor, and an worm gear meshing with the worm gear, and configured as a worm wheel fixed integrally with the camera housing.

Hereinafter, the monitoring camera according to the present invention will be described in detail with reference to the accompanying drawings.

3 is an exploded perspective view showing the combined dome type surveillance camera 100 according to the present invention.

As shown in Figure 3 and 4, the combined dome-shaped surveillance camera 100 of the present invention is a rotary camera, the front panel 105, the camera housing 110, the lens holder 120, the tilt direction control unit 115, a fan rotation controller 151, and a rear panel 190 are provided.

The front panel 105 forms an exterior of the surveillance camera 100 and has a circular opening 107 that protrudes the front portion of the camera housing 110 to the outside.

The camera housing 110 is composed of first and second hemispherical covers 111 and 112 connected to each other in the form of a coupling dome by fixing means such as screws.

The first and second hemispherical covers 111 and 112 respectively show only the upper and lower support 108; the upper support is formed near the upper and lower portions of the circular opening 107 of the front panel 105 (see FIGS. 4 to 6). And upper and lower support protrusions 111a and 111b;

A lens cover 113 having a lens window 114 is provided on the front surface between the first and second hemispherical covers 111 and 112.

In addition, the lens holder 120 is disposed inside the first and second hemispherical covers 111 and 112. The lens holder 120 includes first and second hemispherical covers 111 and 112 and a hemispherical housing installed to rotate along an inner circumferential surface of the lens cover 113. In the center of the lens holder 120, a complementary metal oxide semiconductor (CMOS) lens 125 is passed through the fixing hole 127 by the fixing member 126 to pass through the lens window 114 of the lens cover 113. It is installed to be exposed. The printed circuit board 128 equipped with a signal processing circuit for processing an image incident through the CMOS lens 125 is fixed to the lens holder 120 behind the fixing member 126.

The tilt direction rotation controller 115 rotates the lens holder 120 holding the CMOS lens 125 in a vertical direction within a range of a predetermined angle through the lens window 114. The tilt motor 132 and the tilt The gear part 134 and the stopper 140 are provided.

The tilt motor 132 is fixed to the first and second hemispherical covers 111 and 112 by the tilt motor bracket 132a (see FIG. 4).

The tilt gear unit 134 includes a first worm gear 135 and a first worm wheel 136, and converts and rotates the rotation force of the tilt motor 132 vertically to the lens holder 120.

The first worm gear 135 is formed on the shaft 133 of the tilt motor 132.

The first worm wheel 136 includes a shaft 139 and a first arc gear 137 having a first arc tooth 138. The shaft 139 is rotatably supported at both ends by the first and second support bosses 117 (only the first bosses are shown) formed on the inner circumferential surfaces of the first and second hemispherical covers 111 and 112, respectively. It is fixed to the printed circuit board 128 and the lens holder 120 at the rear of the printed circuit board 128 by the first and second high information 139a 139b extending forward. The first arc gear 138 of the first arc gear 137 protrudes backward from the center of the shaft 139 to be engaged with the first worm gear 135.

The tilt stopper 140 is moved downward and upward by the rotational force of the tilt motor 132 through which the lens holder 120 is transmitted through the first worm gear 135 and the first worm wheel 136 of the tilt gear unit 134. The first and second left sides formed at predetermined intervals on the inner circumferential surfaces of the first and second hemispherical covers 111 and 112 so as to limit the upper and lower rotation ranges of the lens holder 120 when rotating to the left (see FIG. 3). The protrusions 142 and 144 and the first and second right (refer to FIG. 3) protrusions (not shown).

The fan rotation control unit 151 has a camera housing 110 having a lens holder 120 fixing the CMOS lens 125 at a predetermined angle with respect to the upper and lower support protrusions 111a, 111b; 112a 112b. It is for rotating in the left-right direction (arrow A, A 'direction of FIG. 4), and is provided with the fan motor 152, the fan gear part 154, the fan stopper 170, and the shock absorbing part 180. As shown in FIG.

The fan motor 152 is fixed to the fan motor fixing bracket 152a fixed to the rear surface of the front panel 105.

The fan gear unit 154 has a second arc gear having a second worm gear 155 formed on the shaft 153 of the fan motor 152 and a second arc gear 158 engaged with the second worm gear 155. It is composed of a second worm wheel 156 having a 157, converts and decelerates the rotational force of the fan motor 152 in the vertical direction and transmits it to the camera housing (110).

The second worm wheel 156 receives and fixes the lower support protrusions 111b and 112b of the first and second hemispherical covers 111 and 112 of the camera housing 110 in the fixing hole 159 (see FIG. 3). Rotate integrally with the camera housing (110).

4 to 6, the fan stopper 170 is for limiting the upper left rotational range or the upper right rotational range of the camera housing 110, and the first and second hemispherical covers of the camera housing 110 ( The first and second protrusions 172 and 174 protruding outwardly with a predetermined distance from the lower portions of the 111 and 112 are provided. The first and second protrusions 172 and 174 are the camera housing 110 is transmitted through the second worm gear 155 of the fan gear unit 154 and the second arc gear 157 of the second worm wheel 156. A shock absorbing portion (described later) formed in the front panel 105, particularly the edge 107 'of the circular opening 107 of the front panel 105 when the fan motor 152 rotates to the left or the right by a rotational force or more. 180 to limit rotation of the camera housing 110.

The buffer unit 180 contacts the fan stopper 170 when the camera housing 110 rotates to limit the rotation of the camera housing 110, and at the same time, the camera housing 110 does not stop immediately and is burned within a certain degree. To further rotate sexually, it is formed near the edge 107 ′ of the circular opening 107 of the front panel 105 opposite the first and second protrusions 172, 174 of the stopper 170. It consists of first and second flexible bars 181, 182.

The first and second flexible bars 181, 182 do not protrude toward the gap from the edge 107 ′ in order to keep the gap between the camera housing 110 and the circular opening 107 of the front panel 105 at least small. Without being formed in the first and second incision grooves 107a, 107b formed on the left and right sides of the edge 107 'of the circular opening 107.

In addition, as shown in FIG. 7, the first and second flexible bars 181 and 182 are formed to protrude along a circle formed by the edge 107 ′ in the first and second incision grooves 107a and 107b. desirable. Alternatively, the first and second flexible bars (not shown) may be formed to protrude perpendicularly to the circle formed by the edge 107 in the first and second incision grooves 107a and 107b.

Referring to FIG. 3 again, the rear panel 190 may include a screw to seal the camera housing 110, the lens holder 120, the tilt rotation control unit 115, the fan rotation control unit 151, and the like described above. It is coupled to the front panel 105 as a fixing means.

In the above-described embodiment of the present invention, the fan stopper 170 has been described and illustrated as being composed of only the first and second protrusions 172 and 174, but the first and second flexible bars 181 of the shock absorbing unit 180 are described. And 182 are in contact with the first and second protrusions 172, 174 to limit rotation of the camera housing 110, causing the first and second flexible bars 181, 182 to move excessively beyond the elastic force limit. To prevent damage, the front panel may be spaced at a distance from the first and second flexible bars 181 and 182 to limit the elastic movement of the first and second flexible bars 181 and 182 beyond a certain degree. It may be configured to further include a plate-shaped first and second reinforcing portion (not shown) formed in 105.

When the left and right rotation control operation of the combined dome-type monitoring camera 100 according to the present invention configured as described above will be described in detail with reference to Figures 4 to 6 as follows.

In the following description, the left and right rotation control operation of the surveillance camera 100 is for illustration, the user by the remote wireless or wired operation or a set program, the camera housing 110 in the central position shown in FIG. It is assumed that the right turn (left and right rotation directions are based on FIG. 3) shown in FIG. 3 is moved to the upper limit position, the upper right turn position shown in FIG. 6, and then returned to the center position shown in FIG. 4. Shall be.

First, when power is applied to rotate the fan motor 152 in one direction, for example, clockwise, by a remote control operation or a set program of the user, the fan motor 152 is rotated clockwise.

The rotational force of the fan motor 152 is transmitted to the second arc gear 158 of the second arc gear 157 of the second worm wheel 156 through the second worm gear 155 of the fan gear unit 154. Therefore, the second worm wheel 156 is rotated in the counterclockwise direction (the arrow A direction in FIG. 4) in the center position shown in FIG.

As the second worm wheel 156 is rotated in the counterclockwise direction, the camera housing 110 fixed integrally with the second worm wheel 156 by the lower support protrusions 111b and 112b moves the upper and lower support portions 108. It is rotated counterclockwise (arrow A direction) to the center.

Thereafter, as shown in FIG. 5, when the first protrusion 172 of the stopper 170 contacts and blocks the first flexible bar 181 of the shock absorber 180, the fan motor 152 may be remotely operated by the user. The counter rotates in the other direction, ie counterclockwise, by a control operation or a set program.

However, at this time, if the fan motor 152 is not immediately rotated counterclockwise due to a user's operation delay or a control error of a set program, the camera housing 110 rotates the fan motor 152 in a continuous clockwise direction. It rotates further in the counterclockwise direction (arrow A direction) by the delay or error time.

At this time, since the first flexible bar 181 has an elastic force, even if the camera housing 110 further rotates counterclockwise, the first flexible bar 181 is pushed by the first protrusion 172 to counterclockwise of the camera housing 110. Enable rotation Accordingly, the second worm gear 155 of the fan gear unit 154 has a second arc gear 157 of the second worm wheel 156 by the distance that the first flexible bar 181 is pushed and moved by the first protrusion 172. The rotational force of the fan motor 152 is transmitted to the camera housing 110 without generating a gear bite which is abnormally engaged with the second arc gear 158 of the).

Then, when the fan motor 152 is normally reversed by the user's remote control operation or a set program, the camera housing 110 is subjected to the power transmission operation of the second worm gear 155 and the second arc gear 158 described above. By the clockwise direction (arrow A 'direction), it moves to the upper left rotational position of FIG. 6 via the center position of FIG.

When the camera housing 110 reaches the upper left rotation position, as described above, if the fan motor 152 does not immediately rotate clockwise due to a user's operation delay or a control error of a set program, the camera housing 110 ) Rotates further clockwise (arrow A 'direction) by a delay or error time by the continuous counterclockwise rotation of the fan motor 152. At this time, the second flexible bar 182 is pushed by the second protrusion 174 to enable the clockwise rotation of the camera housing 110. Accordingly, the second worm gear 155 of the fan gear unit 154 has a second arc gear 157 of the second worm wheel 156 by the distance that the second flexible bar 182 is pushed and moved by the second protrusion 174. The rotational force of the fan motor 152 is transmitted to the camera housing 110 without generating a gear bite which is abnormally engaged with the second arc gear 158 of the).

Then, when the fan motor 152 is normally rotated back by the user's remote control operation or a set program, the camera housing 110 performs power transmission operation of the second worm gear 155 and the second arc gear 158 described above. Rotates in the counterclockwise direction (arrow A direction), moves to the center position shown in FIG. 4, and stops by the user's remote control operation or a set program.

As described above, in the surveillance camera according to the present invention, when the rotation of the camera housing is limited by the fan stopper during left and right rotation adjustment, the fan motor is immediately stopped or reversed due to user's operation delay or control error of the set program. Even if not rotated, the camera housing is provided with a buffer to allow the camera housing to be rotated more elastically within a certain degree, so that the camera housing, which is caused by the continuous rotation of the fan motor without stopping or counter-rotation with the rotation of the camera housing limited, No gear bites occur in the fan gear portion that rotates the gears. Therefore, the user is forced to drive the fan motor to loosen the gear bite to damage the fan motor, or to visit the remote site directly to repair or replace the surveillance camera is prevented.

In the above, certain preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiments, and any person having ordinary skill in the art to which the present invention pertains without departing from the spirit and spirit of the present invention as claimed in the claims may have various modifications and Modifications may be made.

Claims (5)

A front panel having an opening; A camera housing having a portion installed to be exposed to the outside through the opening and having a lens mounted therein; And At least one rotation control unit for rotating the camera housing within a range of a predetermined angle; The rotation control unit, a motor installed in the front panel, a gear unit for transmitting the rotational force of the motor to the camera housing to rotate the camera housing, the contact with the front panel when the camera housing is rotated by the gear unit And a stopper for restricting the rotation of the camera housing to a predetermined range or more, and a shock absorbing portion for allowing the camera housing to be further rotated within a certain degree without being stopped when the rotation of the camera housing is limited. The stopper includes at least a pair of protrusions protruding outwardly at a distance from the camera housing, And the buffer unit includes at least one pair of flexible bars formed on the front panel opposite the protrusions of the stopper. delete The method of claim 1, And the stopper further comprises at least one pair of reinforcement portions formed in the front panel at a predetermined interval to prevent the flexible bar from moving above a certain elastic limit. The surveillance camera according to claim 1, wherein the pair of flexible bars are each formed in a pair of cutout grooves formed at an edge of the opening of the front panel opposite the protrusion of the stopper. The method of claim 1, wherein the gear unit, A worm gear coaxially formed on the shaft of the motor; And Surveillance camera comprising an worm wheel meshing with the worm gear, the worm wheel fixed to the camera housing.

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