JP4464843B2 - Surveillance camera device - Google Patents

Description

The present invention relates to a monitoring camera apparatus having a drop under protection.

2. Description of the Related Art Conventionally, there is known a type of surveillance camera that is installed in an embedded state such as a ceiling (for example, see Patent Document 1). When practicing the surveillance camera apparatus of this type, the lock mechanism is provided to prevent under drop.

  FIG. 7 shows an example of a conventional surveillance camera device. The monitoring camera device 101 is a ceiling-embedded type and includes a camera 103 and a mounting base 105. The mounting base 105 is provided in the mounting hole 109 of the ceiling 107. The camera 103 is attached to the camera attachment surface 111 of the attachment base 105 in a posture facing downward. The camera mounting surface 111 is located higher than the ceiling surface. Thus, the body portion 113 of the camera 103 is embedded in the mounting hole 109, and only the dome portion 115 protrudes from the ceiling surface.

The locking member 117 is protruded from the camera 10 3. The lock member 117 protrudes from the upper end of the camera 103. The lock member 117 is fixed to the mounting base 105 with a lock screw 119. Thereby, the rotation of the camera 103 is prevented (rotation prevention). The drop of a camera 103 is prevented.

In the operation of fixing the lock member 117, the driver 121 is inserted into the gap on the side of the camera 103 from the entrance of the mounting hole 109. Then, using the driver 121, the lock screw 119 is passed through the hole of the lock member 117 at the back of the attachment hole 109 and tightened to the attachment base 105.
JP 2000-165710 A (pages 12-14, FIG. 1)

  However, in conventional surveillance camera devices, the back of the ceiling is often dark, the gap through which the driver beside the camera is narrow, and the lock screw tends to fall from the driver, so the locking operation may not be easy. There was a problem.

The present invention has been made to solve the conventional problems, and its object is to provide a monitoring camera apparatus capable of facilitating the locking operation for the prevention under drop.

  The surveillance camera device of the present invention includes a surveillance camera, an attachment base that holds the surveillance camera in an embedded state in an attachment hole, a camera side locking member that protrudes from the surveillance camera, and the camera side in the camera removal direction. A base-side lock member that locks the movement of the lock member; and a lock lever that is coupled to the base-side lock member by a rod that extends from the base-side lock member to the inlet of the mounting hole, and a lever for the lock lever In conjunction with the operation, the base side lock member locks the camera side lock member in the mounting hole.

  With this configuration, the base-side lock member that locks the camera-side lock member is provided, the lock lever is provided at the attachment hole entrance portion, and the lock lever and the base-side lock member are connected. Therefore, when the lock lever is operated at the attachment hole entrance, the base side lock member locks the camera side lock member in the attachment hole in conjunction with the lever operation, so that the locking operation is facilitated.

  In the surveillance camera device of the present invention, the base-side lock member is positioned at a lock location on the camera removal direction side with respect to the camera-side lock member when the angular position of the surveillance camera is a predetermined mounting angle. The camera side lock member is locked by the lock portion.

  With this configuration, when the angular position of the surveillance camera is deviated from the predetermined mounting angle in the camera removal direction, the camera-side lock member is positioned at the lock position where the base-side lock member should reach for locking. Therefore, the base side lock member hits the camera side lock member, and the movement of the lock lever connected to the base side lock member is restricted. Therefore, it can be easily confirmed whether or not the camera is attached at a fixed position.

  The surveillance camera device of the present invention is provided with a lever fixing screw for fixing the lock lever to the mounting base, and the lock lever includes a screw position when locked and a screw position when not locked. In between, there is a protrusion that abuts against the screw head and restricts the movement of the lock lever.

  With this configuration, even if the lever fixing screw is somewhat loosened, the head of the lever fixing screw comes into contact with the protrusion of the lock lever, and the movement of the lock lever is restricted. Therefore, the lock state can be prevented from being released.

  Another aspect of the present invention is a camera mounting device, which is a mounting base that holds the camera in an embedded state in a mounting hole, and a camera side locking member protruding from the camera in the direction of camera removal. A base-side lock member that locks the movement of the base-side lock member, and a lock lever that is connected to the base-side lock member by a rod that extends from the base-side lock member to the inlet of the mounting hole. In conjunction with this, the base side locking member locks the camera side locking member in the mounting hole. According to this aspect, similarly to the above-described aspect of the monitoring camera device, the locking operation can be facilitated.

Another aspect is the prevention device under camera drop of the present invention. The camera drop under prevention device includes a camera-side locking member projecting from the camera held in the mounting hole in a buried state, and the base-side locking member for locking the movement of the camera-side locking member to the camera detaching direction A lock lever connected to the base side lock member by a rod extending from the base side lock member to the inlet of the mounting hole, and the base side lock member is interlocked with a lever operation on the lock lever. The camera side locking member is locked in the mounting hole. According to this aspect, similarly to the above-described aspect of the monitoring camera device, the locking operation can be facilitated.

The present invention, the base-side locking member to lock the camera-side locking member is provided, the locking lever is provided in the mounting hole inlet portion, by which the lock lever is connected to the base-side locking member, the locking operations for preventing under drop It is possible to provide a surveillance camera device having an effect that it can be easily performed.

  Hereinafter, surveillance camera devices according to embodiments of the present invention will be described with reference to the drawings.

  A surveillance camera device according to an embodiment of the present invention is shown in FIGS. FIG. 1 is a perspective view showing the surveillance camera device 10 together with its locking mechanism, and FIG. 2 shows a state where the surveillance camera device 10 is provided on the ceiling.

  As shown in FIG. 2, the monitoring camera device 10 includes a monitoring camera 12 (hereinafter simply referred to as camera 12) and a mounting base 14. The attachment base 14 is a metal fitting provided in the attachment hole 18 of the ceiling board 16. The camera 12 faces downward and is attached to the attachment base 14 in a posture embedded in the attachment hole 18.

  The mounting base 14 has an annular lower plate 20. The lower plate 20 is located on the lower side of the ceiling plate 16 along the edge of the mounting hole 18. Four support columns 22 extend upward from the lower plate 20. The upper plate 24 is supported by the four columns 22 at a position higher than the ceiling plate 16. The upper plate 24 is located in the back of the ceiling, and a bracket portion 25 is provided at the center. Although not shown, the bracket 25 is fixed to a rod hanging from the top surface of the ceiling with a nut.

  A ceiling presser 26 is attached to each column 22. The ceiling retainer 26 can be rotated between a closed position and an open position about the base mounting screw 28. In the closed position, the ceiling retainer 26 faces the tangential direction of the circle of the lower plate 20. In the open position, the four ceiling retainers 26 are radial. The ceiling retainer 26 is urged toward the open position by a spring.

  In the mounted state, the ceiling retainer 26 is in the open position. The ceiling retainer 26 is pressed downward by the base mounting screw 28, and the ceiling plate 16 is sandwiched between the ceiling retainer 26 and the lower plate 20. Thereby, the mounting base 14 is fixed to the ceiling board 16.

  The upper plate 24 is an annular plate. A mounting plate 30 is fixed to the lower center of the upper plate 24 with screws. The camera 12 is attached to the attachment plate 30 in a posture facing downward.

  The camera 12 includes a body portion 32 and a dome portion 34. The body portion 32 is buried in the mounting hole 18, and the dome portion 34 is exposed from the lower surface of the ceiling board 16. In the present embodiment, the body portion 32 is not a torso shape. The body portion 32 has a trumpet shape that expands in a conical shape from the middle.

In addition, an annular protective cover (not shown) is attached to the monitoring camera device 10 from below. The mounting base 14 is hidden by the protective cover. The gap between the mounting hole 18 and the camera 12 is also covered with a protective cover. Only the dome portion 34 of the camera 12 is exposed from the protective cover. In addition, a power cable and a video output cable are connected to the monitoring camera 12. The surveillance camera 12 is connected to the mounting base 14 with a safety wire, and the mounting base 14 is connected to the ceiling with a safety wire.

  Referring to FIG. 3, three engagement holes 36 are provided in the mounting plate 30 to which the upper surface of the camera 12 is attached. The engagement hole 36 is an arc-shaped elongated hole. The engagement hole 36 includes an end inlet 38 and a guide 40 extending from the inlet 38. The width of the inlet 38 is larger than the guide portion 40. Corresponding to the three engagement holes 36, the end face of the camera 12 is provided with three engagement protrusions (not shown). The engaging protrusion passes through the inlet 38 but does not pass through the guide portion 40. These engagement protrusions are inserted from the entrance 38 of the engagement hole 36, and the camera 12 is rotated clockwise as indicated by an arrow. Thereby, the camera 12 is attached to the attachment plate 30.

  The camera 12 is rotated until the engaging protrusion hits the end of the guide portion 40. The angle position of the camera 12 at this time is a preset attachment angle of the camera 12. In the present embodiment, the rotation angle from the inlet 38 to the mounting position is 15 degrees.

Next, a configuration of a locking mechanism for preventing under drop. As shown in FIG. 1, the locking mechanism includes a camera side locking member 50 and a base side locking tool 52 (note that the locking mechanism is not shown in FIG. 2). The base side lock tool 52 includes a base side lock member 54 and a lock lever 58 coupled to the base side lock member 54 with a rod 56. In FIG. 1, the lock mechanism is in a locked state.

  4A to 4C are perspective views of the base-side lock tool 52 as viewed from three directions. FIG. 5 is a view of the lock mechanism in the unlocked state and the locked state as viewed from below the lower plate 20, and shows the positional relationship between the base side lock member 50 and the base side lock tool 52.

  The camera-side lock member 50 is a metal fitting made of a metal plate protrusion protruding from the camera 12. The camera side lock member 50 protrudes laterally from the upper end of the camera 12, and is therefore directly below the upper plate 24.

  The base side lock member 54 is a metal fitting located at the same position as the camera side lock member 50 in the height direction. The base side lock member 54 engages with the camera side lock member 50 in the locked state shown in FIGS. 1 and 5 to prevent the camera 12 from rotating in the camera removal direction, thereby moving the camera side lock member 50. Is locked. The camera removal direction is a direction in which the camera 12 rotates when it is detached from the mounting plate 30, and is counterclockwise in this embodiment (when viewed from below).

  More specifically, the base side lock member 54 is formed by bending a metal plate and has a lock wall portion 60. In the present embodiment, the lock wall portion 60 is a lock portion, and is located at a lock location adjacent to the camera side lock member 50 in the camera removal direction. That is, the lock wall portion 60 is positioned in the direction in which the camera side lock member 50 moves when the camera 12 is removed. Thereby, the movement of the camera side locking member 50 which the camera 12 remove | deviates is blocked | prevented.

  In the present embodiment, the base side lock member 54 is in contact with the camera side lock member 50 in the locked state. However, the base side lock member 54 may not be in contact with the camera side lock member 50 and may be in the vicinity. Such an arrangement and configuration are also included in the engagement or locking of the base side lock member 54 and the camera side lock member 50.

The rod 56 extends downward from the base-side lock member 54 toward the inlet of the mounting hole 18 and functions as a shaft for rotating the base-side lock tool 42. The rod 56 extends along the support 22 to the entrance of the mounting hole 18 and reaches the lower plate 20.

  The lock lever 58 is a metal fitting made of a fan-shaped metal plate, and is attached to the tip of the rod 56. The lock lever 58 is located on the lower side of the lower plate 20 and is rotatable with respect to the lower plate 20.

  The lock lever 58, the rod 56, and the base-side lock member 54 are attached to the attachment base 14 so as to be integrally rotatable. The rotation center is a vertical axis passing through the rod 56. In the locking operation, the base-side lock plate 54 rotates as the lock lever 58 rotates. As shown in FIG. 5, the base side lock member 54 is separated from the camera side lock member 50 in the unlocked state. In the locking operation, the lock lever 58 is rotated counterclockwise as indicated by an arrow A in FIG. In conjunction with the turning operation of the lock lever 58, the base-side lock plate 54 also turns counterclockwise as indicated by an arrow B in FIG. In the locked state, the base side lock member 54 engages with the camera side lock member 50 and locks the camera side lock member 50.

  The lock lever 58 is provided with an arc-shaped long hole 62. The center of the arc is the rotation axis. A lever fixing screw 64 is passed through the elongated hole 62 and fastened to the lower plate 20. Thereby, the lever fixing screw 64 is fixed.

  The lock lever 58 is provided with two screw positions. One is a screw position 66 when not locked, and the other is a screw position 68 when locked. In the unlocked state, the lever fixing screw 64 is at the screw position 66 when not locked, and in the locked state, the lever fixing screw 64 is at the screw position 68 when locked. When the lock lever 58 is rotated, the lever fixing screw 64 moves in the elongated hole 62. However, this is a relative movement of the lever fixing screw 64 with respect to the lock lever 58. Actually, the lever fixing screw 64 does not move, and the lock lever 58 moves.

  The lock lever 58 has a protrusion 70 between a screw position 66 when not locked and a position 68 when locked. The projecting portion 70 is located substantially at the center of the elongated hole 62. The protrusion 70 contacts the screw head of the lever fixing screw 64 and restricts the movement of the lock lever 58. This limiting function is exhibited when the lever fixing screw 64 is loose enough not to exceed the protrusion 70.

  The configuration of the monitoring camera device 10 according to the present embodiment has been described above. Next, the assembly order of the monitoring camera device 10 will be described. It is assumed that a mounting hole 18 is previously formed in the ceiling board 16.

  First, the attachment base 14 is attached to the ceiling board 16. The mounting base 14 is inserted into the mounting hole 18 from below with the ceiling retainer 26 closed. The four ceiling retainers 26 are opened radially above the ceiling plate 16 by the biasing force of the springs. In this state, the base mounting screw 28 is turned. Thereby, the ceiling retainer 26 and the lower plate 20 sandwich the ceiling plate 16, and the mounting base 14 is fixed to the ceiling plate 16. Further, the central bracket portion 25 of the upper plate 24 is fixed to the rod on the back of the ceiling.

  Next, the camera 12 is attached to the attachment base 14. A mounting plate 30 is fixed to the mounting base 14 in advance. The camera 12 is lifted from below and inserted into the mounting hole 16. Then, the engagement protrusion on the end face of the camera 12 is inserted into the engagement hole 36 of the mounting plate 30, and then the camera 12 is rotated clockwise (see the arrow in FIG. 3). When the camera 12 is rotated about 15 degrees, the engaging protrusion of the camera 12 hits the end of the engaging hole 36 of the mounting hole 30. Thereby, the camera 12 is arrange | positioned in a predetermined attachment position. In this state, the body portion 32 of the camera 12 is embedded in the mounting hole 18, and the dome portion 34 protrudes from the lower surface of the ceiling plate 16.

  Next, the lock lever 58 is turned. The lock lever 58 is rotated counterclockwise (as viewed from below) as indicated by an arrow A in FIG. At this time, the lock fixing screw 64 is loosened to such an extent that it can get over the protrusion 70.

  When the lock lever 58 rotates, the rod 56 and the base side lock member 54 also rotate together with the lock lever 58 (arrow B). The base side lock member 54 rotates in the horizontal direction directly below the upper plate 24. The base side lock member 54 is rotated until it comes into contact with the camera side lock member 50. At this time, the lock wall portion 60 of the base-side lock member 54 contacts the camera-side lock member 50 from the camera removal direction.

Thus, the base side lock member 54 engages with the camera side lock member 50 to lock the movement of the camera side lock member 54. Detaching direction of rotation of the camera 12 is prevented, therefore, drop of a camera 12 is prevented.

  Furthermore, an annular protective cover is attached from below. As a result, the mounting base 5 is hidden, and the gap between the mounting hole 18 and the camera 12 is also covered with the protective cover. Then, the dome portion 34 of the camera 12 is exposed from the protective cover.

  Next, the confirmation of the camera mounting state realized by using the lock mechanism of the present embodiment will be described. As described above, when the camera 12 is fixed, the engaging protrusion is inserted into the engaging hole 36 of the mounting plate 30, and then the camera 12 is rotated to a predetermined mounting position. If the angular position of the camera 12 is at a correct mounting angle as shown in FIG. 5, the base-side lock member 54 can lock the camera-side lock member 50 by a locking operation. At this time, the lock wall portion 60 of the base-side lock member 54 is positioned at a lock location adjacent to the camera-side lock member 50 in the camera removal direction, and locks the camera-side lock member 50.

  However, in a state where the angular position of the camera 12 is deviated from a predetermined mounting angle, the camera side lock member 50 is located at the lock place where the base side lock member 54 should reach for locking. That is, the camera side lock member 50 occupies the lock place of the base side lock member 54. Therefore, the base side lock member 54 hits the camera side lock member 50 and cannot reach the lock place. Then, the movement of the lock lever 58 connected to the base side lock member 54 is restricted. Thereby, the lock lever 58 cannot be rotated to the correct position at the time of locking. The lock lever 58 cannot be rotated so that the lever fixing screw 54 reaches the screw position 58 on the lever at the time of locking.

  Therefore, in the present embodiment, whether or not the camera 12 is attached at a predetermined attachment position can be easily confirmed based on whether or not the lock lever 58 can be rotated to the lever position at the time of locking. it can.

  Next, FIG. 6 shows a divided structure of the mounting base 14. The upper plate 24 of the mounting base 14 is fixed to the four columns 22 with screws 80. By loosening the screw 80, the upper plate 24 can be removed from the column 22. Then, the mounting base 14 can be divided into a fixed portion to the ceiling board 16 and a mounting portion of the camera 12.

  Such a split configuration allows the camera 12 to be removed not only from below but also from above. In this case, the operator removes the screw 80 of the mounting base 14 and separates the upper plate 24 from the support column 22. Then, the operator removes the camera 12 from the upper plate 24.

  Conventionally, the camera 12 can be attached and detached only from under the ceiling. Therefore, even in a building with a structure where an operator can enter the back of the ceiling, the worker has prepared a ladder and removed the camera 12 from below. On the other hand, in this embodiment, when an operator puts in the back of the ceiling, the worker can perform maintenance work of the camera 12 on the back of the ceiling. Therefore, maintainability is improved.

  The surveillance camera device 10 according to the embodiment of the present invention has been described above. According to the present embodiment, the base side lock member 54 that locks the camera side lock member 50 is provided, the lock lever 58 is provided at the entrance portion of the mounting hole 18, and the lock lever 58 is connected to the base side lock member 54. Has been. Therefore, when the lock lever 58 is operated at the entrance of the mounting hole 18, the base side locking member 54 locks the camera side locking member 50 in the mounting hole 18 in conjunction with the lever operation. is there.

  In particular, as will be described below, the surveillance camera device 10 according to the present embodiment is not easily locked even if a conventional screw-type lock mechanism is provided. Therefore, the lever-type lock mechanism described above is suitable. Used. That is, in the conventional screw type locking mechanism, the locking member at the upper end of the camera is fixed to the mounting base with a screw. At this time, a driver is inserted into the gap on the side of the camera body. However, in the present embodiment, the camera body is not constricted but enlarged in a cone shape. Therefore, when a conventional locking mechanism is employed, the driver must be inserted obliquely. For this reason, it is difficult to see the screwing portion, the screw is easily dropped from the driver, and the insertion direction of the driver is inclined with respect to the tightening direction. Therefore, the tightening operation is not easy. On the other hand, according to the locking mechanism of the present embodiment, the locking operation is easy even when the camera has a cone-shaped body.

  Further, according to the present embodiment, the base-side lock member 54 is positioned at the lock position on the camera removal direction side with respect to the camera-side lock member 50 when the angular position of the camera 12 is a predetermined attachment angle. A lock portion is provided, and the camera side lock member 50 is locked by the lock portion. Therefore, in a state where the angular position of the camera 12 is deviated from the predetermined mounting angle in the camera removal direction, the camera side lock member 50 is located at a lock place where the base side lock member 54 should reach for locking. That is, the camera-side lock member 50 occupies the lock place. Therefore, the base side lock member 54 hits the camera side lock member 50 and the movement of the lock lever 58 connected to the base side lock member 54 is restricted. Therefore, it is possible to easily check the installation state as to whether or not the camera 12 is securely attached to the fixed position.

  Further, according to the present embodiment, the lever fixing screw 64 for fixing the lock lever 58 to the mounting base 14 is provided. The lock lever 58 has an engaging portion 70 between a screw position 66 when locked on the lever and a screw position 68 when not locked, and the engaging portion 70 comes into contact with the screw head to lock the lock lever 58. Limit movement. Therefore, even if the lever fixing screw 64 is slightly loosened and the lock lever 58 is slightly rotated, the head of the lever fixing screw 64 comes into contact with the protruding portion 70 of the lock lever 58, thereby restricting the movement of the lock lever 58. . Therefore, the lock state can be prevented from being released.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and it goes without saying that those skilled in the art can modify the above-described embodiments within the scope of the present invention.

As described above, such monitoring camera apparatus according to the present invention has an effect of facilitating the locking operation for the prevention forces may be useful as a monitoring camera apparatus or the like.

The perspective view of the surveillance camera apparatus in embodiment of this invention The front view of the surveillance camera apparatus in embodiment of this invention Diagram showing camera structure The perspective view which looked at the base side lock tool from three directions Diagram showing locking mechanism when unlocked and when locked Diagram showing split structure of mounting base The figure which shows the locking mechanism of the conventional surveillance camera apparatus

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Surveillance camera apparatus 12 Surveillance camera 14 Mounting base 16 Ceiling board 18 Mounting hole 32 Body part 34 Dome part 50 Camera side locking member 52 Base side locking tool 54 Base side locking member 56 Rod 58 Lock lever 60 Lock wall part 62 Elongated hole 64 Lever fixing screw 66 Screw position when not locked 68 Screw position when locked 70 Projection

Claims (5)

A surveillance camera,
A mounting base for holding the surveillance camera in a mounting state in a mounting hole;
A camera side locking member protruding from the surveillance camera;
A base-side lock member that locks the movement of the camera-side lock member in the camera removal direction;
A lock lever connected to the base side lock member by a rod extending from the base side lock member to the inlet of the mounting hole;
And the base side lock member locks the camera side lock member in the mounting hole in conjunction with a lever operation on the lock lever.   The base-side lock member has a lock portion located at a lock position on the camera removal direction side with respect to the camera-side lock member when the angular position of the monitoring camera is a predetermined mounting angle, and the lock portion The surveillance camera device according to claim 1, wherein the camera-side lock member is locked by means of.   A lever fixing screw for fixing the lock lever to the mounting base is provided, and the lock lever is in contact with the screw head between the screw position when locked and the screw position when not locked on the lock lever. The surveillance camera device according to claim 1, further comprising a protrusion that restricts movement of the lock lever. A mounting base that holds the camera embedded in the mounting hole;
A base side locking member that locks the movement of the camera side locking member protruding from the camera in the camera removal direction; and
A lock lever connected to the base side lock member by a rod extending from the base side lock member to the inlet of the mounting hole;
And the base side locking member locks the camera side locking member in the mounting hole in conjunction with a lever operation on the lock lever. A camera-side lock member protruding from the camera held in an embedded state in the mounting hole;
A base-side lock member that locks the movement of the camera-side lock member in the camera removal direction;
A lock lever connected to the base side lock member by a rod extending from the base side lock member to the inlet of the mounting hole;
Wherein the locking lever camera drop under prevention device the base-side locking member in conjunction with the lever operation is characterized in that for locking the camera-side locking member in the mounting hole with respect.

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