JP2009216792A - Lens device for monitoring and camera for monitoring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lens device for monitoring and a camera for monitoring, suppressing a trouble of electronic parts provided on an outer periphery of a lens barrel. <P>SOLUTION: The lens device for monitoring is equipped with a protection cover 35 arranged to cover the electronic parts 41 and 42 extending to the lens barrel 20 side from a mount part 30 coupled with a camera body and provided to be exposed to the outer periphery of the lens barrel on the mount part. By such constitution, the electronic parts provided to be exposed to the outer periphery of the lens barrel are covered with the protection cover, whereby the trouble of the electronic parts is suppressed when installing the camera for monitoring. By providing the protection cover on the mount part coupled to the camera body, the protection cover is firmly provided on the mount part having high rigidity. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a monitoring lens device and a monitoring camera.

  In recent years, small surveillance cameras have been frequently used in financial and retail stores. The monitoring camera is used by mounting a monitoring lens device on the camera body.

  When installing the surveillance camera, the lens device is adjusted according to the shooting conditions at the installation location. Therefore, the lens device is mounted on the camera body in a state where the optical axis direction can be adjusted in order to adjust the photographing direction, and / or a manual or electric adjustment mechanism for adjusting the zoom and focus. Have Further, the lens device may be provided with electronic components such as a meter in order to electrically control an iris, an IR cut filter, and the like.

  In general, a surveillance camera is installed on a ceiling or wall surface of a store via a support member such as a base or a suspension column for the purpose of securing a shooting range to be monitored and suppressing interference. The surveillance camera is installed by adjusting the optical axis direction of the lens and adjusting the zoom and focus in a state where the camera body on which the lens device is mounted is held on the support member.

JP 2007-310228 A JP 2004-94003 A

  When the monitoring camera is installed, there is a risk that the electronic components provided in the lens device such as an iris and IR cut filter meter may be detached or short-circuited. This type of electronic component is generally provided in a state exposed on the outer periphery of the lens barrel, or in some cases covered with a dustproof cap or the like.

  Electronic components are adjusted with the electronic components held when adjusting the optical axis direction, zoom, focus, etc. of the lens device, or mounted with the electronic components held when mounting the lens device to the camera body. Failure may occur due to being performed or being subjected to excessive impact on electronic components. Even when the dust cap is covered with a dust cap, etc., the dust cap is not firmly fixed to the lens barrel. In some cases.

  In particular, when adjustments such as zoom and focus are performed manually, the adjustment work itself becomes difficult depending on the installation conditions, and failure of electronic components is likely to occur. In addition, the demand for high-precision adjustments with the improvement in image quality of cameras and the progress of miniaturization of lens devices also increase the difficulty of adjustment work and cause failure of electronic components. It becomes easy.

  The present invention has been made in view of the above problems, and a purpose thereof is to provide a new and improved monitoring lens device and monitoring camera capable of suppressing a failure of an electronic component provided on the outer periphery of a lens barrel. Is to provide.

  In order to solve the above-described problem, according to the first aspect of the present invention, the mount portion coupled to the camera body extends from the mount portion to the lens barrel side and is exposed to the outer periphery of the lens barrel. There is provided a monitoring lens device provided with a protective cover arranged to cover the provided electronic component.

  According to such a configuration, the electronic component that is exposed on the outer periphery of the lens barrel is covered with the protective cover, so that failure of the electronic component can be suppressed when the monitoring camera is installed. Further, by providing the protective cover on the mount portion coupled to the camera body, the protective cover can be firmly provided on the highly rigid mount portion.

  The protective cover may be formed integrally with the mount portion. Thereby, the rigidity of a protective cover increases and the protection function of a protective cover is strengthened, and thereby failure of an electronic component can be suppressed.

  Further, an adjusting means for manually adjusting the lens function may be provided on the outer periphery of the lens barrel. Thereby, it is possible to suppress the failure of the electronic component even in manual adjustment of the lens function such as focus and zoom, which easily causes the failure of the electronic component.

  The monitoring lens device may be used in a monitoring camera provided with an adjusting means for manually adjusting the optical axis direction. Thereby, it is possible to suppress the failure of the electronic component even during manual adjustment in the optical axis direction in which the failure of the electronic component is likely to occur.

  The protective cover may be provided with a holding portion that can be held when adjusting the adjusting means. As a result, holding the holding portion to perform the adjustment work reduces the difficulty of manual adjustment in the lens function and / or the optical axis direction, so that failure of the electronic component can be suppressed.

  In order to solve the above problems, according to a second aspect of the present invention, there is provided a surveillance camera having the above-described surveillance lens device according to the first aspect of the present invention.

  According to the present invention, it is possible to provide a monitoring lens device and a monitoring camera capable of suppressing a failure of an electronic component provided on the outer periphery of a lens barrel.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

  Hereinafter, first, a monitoring camera installation method and a conventional monitoring lens device will be described with reference to FIGS. And the monitoring lens apparatus which concerns on embodiment of this invention is demonstrated referring FIGS. 1-3.

(How to install a surveillance camera)
FIG. 4 is a perspective view showing an example of the monitoring camera 1. FIG. 5 is a cross-sectional view showing a state where the monitoring camera 1 shown in FIG. 4 is installed on the ceiling. 4 and 5, the case of the surveillance camera 1 having the dome-shaped case 4 will be described. However, the case of the surveillance camera having a case other than the dome shape or the case of the surveillance camera having no case is also described. The same can be explained.

  As shown in FIGS. 4 and 5, the monitoring camera 1 includes a base 2, a case member 3 fixed to the base 2, and a monitoring lens device 10 disposed inside the case member 3. As shown in FIG. 5, the lens device 10 is attached to the base 2 so as to be tiltable at an angle θ, and to the base 2 so as to be rotatable about the center line C as a rotation axis.

  Further, the cover member 4 is attached to the lens device 10 inside the case member 3. The cover member 4 is provided so as to cover the lens device 10. The cover member 4 is provided with an opening 5 corresponding to the tiltable range of the lens device 10. The cover member 4, together with the lens device 10, can rotate with respect to the base 2 about the center line C as a rotation axis.

  A focus ring 21, a zoom ring 22, and a focus / zoom fixing knob 23 are provided on the outer periphery of the lens barrel 20. Further, on the outer periphery of the lens barrel 20, electronic parts 41 and 42 such as an iris and IR cut filter meter are exposed.

  When installing the monitoring camera 1, the user installs the monitoring camera 1 on the ceiling, wall surface or the like of the store via the base 2 as a first work. As the second operation, the case member 3 and the cover member 4 are removed from the monitoring camera 1 (it may be removed in advance before the installation of the monitoring camera 1). As a third operation, the optical axis direction (pan direction and / or tilt direction) of the lens apparatus 10 is adjusted by rotating and tilting while holding the lens barrel 20. As a fourth operation, the focus ring 21 and the zoom ring 22 are rotated while holding the lens barrel 20 to adjust the focus and zoom, and the focus / zoom fixing knob 23 fixes the focus and zoom adjustment. To do. As a fifth operation, after confirming the adjustment state such as the optical axis direction, focus and zoom, the case member 3 and the cover member 4 are attached to the monitoring camera 1. In the case of the surveillance camera 1 having the case member 3, since the optical path length is changed by attaching the case member 3, the user generally repeats the fourth and fifth operations on a trial and error basis. Become.

  Here, when the monitoring camera 1 is installed, the optical axis direction, focus, and zoom are adjusted while the lens barrel 20 is held, so that the electronic component 41 exposed on the outer periphery of the lens barrel 20 is provided. There is a case where a strong impact is applied to 42 and the electronic components 41 and 42 are broken.

(Conventional monitoring lens device)
FIG. 6 is an explanatory view showing an example of a conventional monitoring lens device. FIG. 6 shows a top view (a), a side view (b), a front view (c), and a rear view (d) of the lens device.

  As shown in FIG. 6, the lens device 10 includes a lens barrel 20 and a mount unit 30. On the outer periphery of the lens barrel 20, a focus ring 21, a zoom ring 22, a focus / zoom fixing knob 23, an IR cut filter meter 41, and an iris meter 42 are provided.

  The focus ring 21 and the zoom ring 22 are provided corresponding to the positions of the focus lens (group) and the zoom lens (group) in the lens barrel 20, and are respectively provided on the front side (subject side) and the rear side of the lens barrel 20. Is provided. Further, the zoom ring 22 is provided with an extension portion that extends to the subject side so as to cover the outer periphery of the focus ring 21. In the vicinity of the front end portion of the lens barrel 20, the focus ring 21 and the zoom ring 22 are provided with concave and convex portions 25 and 26 for rotating operation. The focus / zoom fixing knob 23 is provided as a mechanism for fixing adjustment of focus and zoom by operating the knob 23.

  The IR cut filter meter 41 is composed of a galvanometer or the like, and is provided as a mechanism for switching the mounting state of the IR cut filter 41 by a control signal supplied from the camera body side via the cable 43 and the connector 44. The iris meter 42 is also composed of a galvanometer or the like, and is provided as a mechanism for adjusting the iris by a control signal supplied from the camera body side.

  The mount unit 30 has a CCD holder 31 and is fixed to the lens barrel 20 by fastening means such as a screw 33. The lens device 10 shown in FIG. 6 is a so-called board mount type lens device. For this reason, the mount unit 30 is coupled to the camera body in a state where the mount unit 30 is positioned by the pin 32 provided so as to correspond to the coupling unit of the camera body to be coupled. Here, the mount portion 30 is formed of, for example, a highly rigid resin or metal in order to ensure the coupling with the camera body.

  FIG. 7 is an explanatory view showing another example of a conventional monitoring lens device. FIG. 7 shows a top view (a), a side view (b), a front view (c), and a rear view (d) of the lens device. Hereinafter, the configuration of the lens device 60 illustrated in FIG. 7 will be described, but detailed description of the same configuration as the lens device 10 illustrated in FIG. 6 will be omitted.

  As shown in FIG. 7, the lens device 60 includes a lens barrel 70 and a mount unit 80. On the outer periphery of the lens barrel 70, a focus ring 71, a zoom ring 72, a focus fixing knob 73, a zoom fixing knob 74, and an iris meter 92 are provided. The iris meter 92 is covered with a resin dust cap fixed to the lens barrel 70.

  A lens device 60 shown in FIG. 7 is a so-called CS mount type lens device. Therefore, the mount portion 80 is formed in accordance with the CS mount standard, and is coupled to a camera body that conforms to the CS mount standard without requiring a separate positioning means. Here, the mount portion 80 is formed of, for example, a highly rigid resin or metal in order to ensure the coupling with the camera body.

(Monitoring lens device according to an embodiment of the present invention)
FIG. 1 is an explanatory diagram showing a monitoring lens device according to an embodiment of the present invention. FIG. 1 shows a top view (a), a side view (b), a front view (c), and a rear view (d) of the lens device. A lens apparatus 110 shown in FIG. 1 is obtained by applying a protective cover 35 to the lens apparatus 10 shown in FIG. For this reason, below, detailed description is abbreviate | omitted about the structure similar to the lens apparatus 10 shown in FIG.

  In the lens device 110 according to the present embodiment, a protective cover 35 is provided on the mount unit 30. The protective cover 35 has a shape that covers electronic components such as the IR cut filter meter 41 and the iris meter 42 that are provided exposed on the outer periphery of the lens barrel 20, and is formed integrally with the mount unit 30. ing. In FIG. 1, the portion covered with the protective cover 35 is indicated by a broken line. Here, the protective cover 35 also functions as a dust-proof cover by covering the exposed electronic components 41 and 42.

  The protective cover 35 has a shape that does not cover components used for operation, such as the focus ring 21, the zoom ring 22, and the focus / zoom fixing knob 23. The protective cover 35 is provided with an insertion hole 37 for inserting the cable 43 and the like.

  FIG. 2 is an explanatory diagram showing in detail a mount portion of the monitoring lens device shown in FIG. FIG. 2 shows a top view (a), a front view (b), a bottom view (c), a side view (d), and a rear view (e) of the mount portion.

  As shown in FIG. 2, the mount unit 30 includes a coupling unit and a protective cover 35. The coupling portion is provided with a CCD holder 31 for mounting a CCD as an image pickup device. The coupling portion is provided with a positioning pin 32, a screw hole 33, and the like for fixing the mount portion 30 to the lens barrel 20 and coupling the mount portion 30 to the camera body. An opening 36 is provided in a portion of the protective cover 35 through which the lens barrel 20 is inserted.

  In the mount unit 30 shown in FIG. 2, the protective cover 35 is formed integrally with the mount unit 30 by the same or different rigid material as the mount unit 30. However, the protective cover 35 may be formed separately from the mount portion 30 by a rigid material with appropriate rigidity, and may be fixed to the mount portion 30 by an appropriate fixing means.

  In the mount unit 30 shown in FIG. 2, the protective cover 35 is formed so as to simultaneously cover a plurality of electronic components such as the IR cut filter meter 41 and the iris meter 42. However, the protective cover 35 may be provided as a plurality of members so as to cover the plurality of electronic components 41 and 42 respectively. In addition, the protective cover 35 may be provided as, for example, a mesh member, a member having an opening, or the like after ensuring appropriate rigidity.

  The protective cover 35 may be provided with a holding portion (not shown) that can be held by the user when adjusting the optical axis direction, zoom, focus, and the like of the lens device 10. The holding portion can be configured by, for example, a concavo-convex member, a non-slip member, or the like provided on at least a part of the protective cover 35 so that the user can easily hold it. This reduces the difficulty of manual adjustment during the adjustment operation, so that failure of electronic components such as the IR cut filter meter 41 and the iris meter 42 can be suppressed.

  FIG. 3 is an explanatory diagram showing a modification of the monitoring lens device shown in FIG. FIG. 3 shows a top view (a), a side view (b), a front view (c), and a rear view (d) of the lens device. A lens device 160 shown in FIG. 3 is obtained by applying a protective cover 85 to the lens device 60 shown in FIG. For this reason, below, detailed description is abbreviate | omitted about the structure similar to the lens apparatus 60 shown in FIG.

  In the lens device 160 according to this modification, a protective cover 85 is provided on the mount unit 80. The protective cover 85 has a shape that covers electronic components such as the iris meter 92, and is formed integrally with the mount portion 80. In FIG. 3, a portion covered by the protective cover 85 is indicated by a broken line. In this case, the dust-proof cap (see FIG. 7) covering the iris meter 92 can be omitted.

  The protective cover 85 has a shape that does not cover components used for operation, such as the focus ring 71, the zoom ring 72, the focus fixing knob 73, and the zoom fixing knob 74. The protective cover 85 is provided with an insertion hole 87 through which the iris control cable 93 and the like are inserted.

  As described above, according to the monitoring lens devices 110 and 160 according to the present embodiment, the electronic components 41, 42, and 92 exposed on the outer periphery of the lens barrels 20 and 70 are protected by the protective covers 35 and 85. By covering, failure of the electronic components 41, 42, 92 can be suppressed when the monitoring camera 1 is installed. Further, by providing the protective covers 35 and 85 on the mount portions 30 and 80 coupled to the camera body, the protective covers 35 and 85 can be firmly provided on the mount portions 30 and 80 having high rigidity.

  Thus, when the surveillance camera 1 is installed, the electronic component 41 provided on the outer periphery of the lens barrels 20 and 70 is adjusted even when the optical axis direction, focus and zoom are adjusted with the lens barrels 20 and 70 held. , 42 and 92 are prevented from being subjected to a strong impact. Therefore, even when the adjustment work itself is difficult, when high-precision adjustment is required, or even when the lens apparatuses 110 and 160 are downsized, it is possible to reliably suppress the failure of the electronic components 41, 42, and 92. it can.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, this invention is not limited to the example which concerns. It is obvious for those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea described in the claims. It is understood that it belongs to.

  For example, in the description of the above embodiment, the IR cut filter meter 41 and the iris meters 42 and 92 are given as examples of electronic components provided on the outer periphery of the lens barrels 20 and 70. However, the embodiment of the present invention can be similarly applied to a case where another type of electronic component is provided as the electronic component.

It is explanatory drawing which shows the monitoring lens apparatus which concerns on one Embodiment of this invention. It is explanatory drawing which shows the mount part of the monitoring lens apparatus shown in FIG. 1 in detail. It is explanatory drawing which shows the modification of the monitoring lens apparatus shown in FIG. It is explanatory drawing which shows an example of the camera for monitoring. It is sectional drawing which shows the state which installed the camera for surveillance shown in FIG. 4 on the ceiling. It is explanatory drawing which shows an example of the conventional monitoring lens apparatus. It is explanatory drawing which shows the other example of the conventional monitoring lens apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Surveillance camera 10, 60, 110, 160 Lens apparatus for surveillance 20, 70 Lens barrel 30, 80 Mount part 41 IR cut filter meter (electronic component)
42, 92 Meter for iris (electronic parts)
35, 85 Protective cover

Claims (6)

  The mount unit coupled to the camera body is provided with a protective cover that extends from the mount unit to the lens barrel side and is disposed so as to cover the electronic components that are exposed on the outer periphery of the lens barrel. A monitoring lens device characterized by the above.   The monitoring lens device according to claim 1, wherein the protective cover is formed integrally with the mount portion.   The monitoring lens device according to claim 1, wherein an adjustment unit for manually adjusting a lens function is provided on an outer periphery of the lens barrel.   The monitoring lens device according to claim 1, wherein the monitoring lens device is used in a monitoring camera provided with an adjusting means for manually adjusting an optical axis direction.   The monitoring lens device according to claim 3, wherein the protective cover is provided with a holding portion that can be held when the adjustment unit is adjusted.   The mount unit coupled to the camera body is provided with a protective cover that extends from the mount unit to the lens barrel side and is disposed so as to cover the electronic components that are exposed on the outer periphery of the lens barrel. A surveillance camera comprising a lens device.

Images