JP2010206621A - Dome-shaped camera cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dome-shaped camera cover with which a semi-spherical imaging window of a dome-shaped camera can be kept excellent and maintenance work such as interchange can be easily performed with one hand. <P>SOLUTION: The present invention relates to a dome-shaped camera cover 1 for covering from the outside an imaging window of a dome-shaped camera 100 including a camera base part mounted onto an installation target and the imaging window which is semi-spherical and locked to the camera base part. The dome-shaped camera cover 1 includes a fixed body 2 which has a hollow portion inside and engages with an outer circumferential surface of the camera base part by inserting the camera base part through the hollow portion, and a semi-spherical cover body 3 having the property that at least light is translucent. The fixed body 2 and the cover body 3 are configured to be freely engaged/disengaged. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a dome-type camera cover that covers an imaging window of a dome-type camera from the outside, and more particularly, to a dome-type camera cover that facilitates mounting / removing work and improves stability during mounting.

2. Description of the Related Art Conventionally, a monitoring device is known in which a monitoring camera is installed on an installation target such as a ceiling and the monitoring area is monitored from the outside or image data to be captured is recorded.
In order to protect the camera unit, the surveillance camera normally includes a housing having a camera unit and a transparent or translucent material imaging window in a portion facing the imaging unit or imaging lens of the camera unit. ing.
In such a surveillance camera, since the imaging window is exposed to the outside, dust and dirt are likely to adhere, and particularly in an environment where an oil film having a high viscosity such as a kitchen is likely to adhere, such as a kitchen. Therefore, there is a problem that the image pickup window has to be cleaned frequently and laboriously.

  In order to solve this problem, Patent Document 1 proposes that the window portion of the security camera is covered with a film to prevent the window portion from being stained. In Patent Document 1, a film on a roll and a take-up portion of this film are provided so as to sandwich a window portion of a security camera, and the film covering the window portion is not soiled by sliding the film on the window portion. As a thing, the antifouling apparatus which keeps the visual field of a security camera favorable is disclosed.

Japanese Patent Laid-Open No. 2005-12737

  In the anti-smudge device of Patent Document 1, the imaging window is covered with a film from the outside, and the film can be exchanged so that the window portion can be improved even in an environment where an oil film with high viscosity adheres. It becomes possible to keep.

  However, the conventional method of Patent Document 1 is to slide a film on a planar imaging window, and does not consider any dome type camera in which the imaging window is hemispherical.

A dome type camera has a feature that a camera unit is housed inside a hemispherical imaging window, and it is difficult to determine the shooting direction from the outside. In addition, since the appearance is spherical, there is little foreign object feeling on the ceiling, and furthermore, since it has a shape similar to other devices such as a human body detector and a fire detector, it is difficult to distinguish from a camera at first glance. From such a point, in recent years, the spread of dome type cameras is in progress.
However, as described above, the conventional antifouling device does not consider covering or sliding the entire hemispherical window of the dome camera with the film, and therefore keeps the window of the dome camera good. There is a problem that can not be.

  Usually, the surveillance camera is installed at a high place such as the ceiling in order to take a wide imaging field of view. However, in a conventional anti-smudge device, when the film cartridge is replaced, it is provided on the front surface of the camera housing. The film cover is removed, and the film is filled with the film and the film is stretched between the film cartridge and the film take-up unit. Therefore, the replacement procedure becomes complicated, and the risk of working at high places increases. There is a fear.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a dome-shaped camera cover that can maintain a hemispherical imaging window well in a dome-shaped camera and can easily perform maintenance work such as replacement with one hand.

  In order to achieve the above object, a dome-shaped camera cover according to the present invention includes a camera base attached to an installation target and a hemispherical imaging window locked to the camera base. A dome-type camera cover that covers the outside from the outside, having a hollow portion inside, a fixed body that is inserted into the hollow portion and engaged with the outer peripheral surface of the camera base portion, and transmits at least light A hemispherical cover body having properties, and the fixed body and the cover body are configured to be detachable.

  In such a configuration, the dome-type camera cover is attached to the dome-type camera by inserting a base portion of a dome-type camera installed in advance into a hollow portion inside the fixed body, and a hemisphere separate from the fixed body. It acts to engage or disengage from the cover member.

According to such a configuration, by attaching the fixed body to the dome type camera, it is possible to engage the hemispherical cover body from the outside and cover the outside of the imaging window of the dome type camera to prevent the imaging window from being stained.
In addition, by removing the cover body from the fixed body and replacing it, even in an environment where an oil film with a high viscosity adheres, the dome-shaped camera's imaging window is not troublesomely cleaned without trouble. It becomes possible to maintain the state. Thereby, it is possible to install a dome type camera without a burden of cleaning or the like in a monitoring target such as kitchen where oil is scattered.

  Preferably, the cover body includes a flange having flexibility and formed at a peripheral portion, and the fixed body is engaged with the flange at an end portion on the imaging window side to cover the cover. A plurality of supporting pieces for supporting the body are provided.

  In such a configuration, the dome-shaped camera cover has a flexible flange engaged with a plurality of supporting pieces of the fixed body, so that the hemispherical cover body is attached to the fixed body and the engagement is released. The cover body acts so as to be detached from the fixed body.

According to such a configuration, by fitting the cover body to the fixed body so as to press the flange, the flange bends and engages with the plurality of supporting pieces, and the cover body can be attached to the fixed body. By pulling the cover body so as to peel from the fixed body, the flange is bent, the engagement between the engaging piece and the flange is released, and the cover body is detached from the fixed body.
Thereby, in the operation | work which replaces | covers a cover body, an operator can attach / remove a cover body with one hand, and it becomes possible to perform a maintenance easily, ensuring the safety | security in high place work.

  Further, preferably, the fixed body includes a movable support auxiliary portion that can freely contact / separate the support piece from the installation target side of the support piece.

  In such a configuration, the dome-shaped camera cover includes a support auxiliary part that is movable with respect to the support piece from the installation target side such as a ceiling, and after the cover body and the fixed body are engaged, this engagement is provided. The support auxiliary portion acts to press the engaging piece engaged with the flange by its own weight.

  According to such a configuration, the engagement assisting portion presses the engagement piece engaged with the flange by its own weight, so that the engagement state between the cover body and the fixed body can be stabilized, and unexpected dropping or It becomes possible to prevent rattling.

  Preferably, the support auxiliary portion has a hollow portion inside and is provided along the inside of the fixed body, and at least an inner edge portion is formed of an elastic material.

  According to such a configuration, the support auxiliary portion is provided along the inside of the fixed body, so that the support support portion can uniformly balance the support piece with its own weight, and the fixed body Even when the support assisting portion comes into contact with the dome type camera when attached to the dome type camera, it is possible to prevent the imaging window of the camera from being damaged.

  Preferably, the cover body is formed of any one of polyethylene resin, polypropylene resin, polyvinyl chloride resin, polyvinylidene chloride resin, polystyrene resin, and polyvinyl acetate resin.

  According to such a configuration, by forming the cover body from a highly flexible resin, the entire cover body including the flange can be easily molded while having a flexible configuration. The attachment / detachment work can be performed more easily.

  According to the present invention, by attaching the fixed body to the dome type camera, it is possible to easily engage the hemispherical cover body from the outside to cover the outside of the imaging window of the dome type camera and prevent the imaging window from being stained. .

  In addition, the cover body can be easily detached from the fixed body, and by replacing the cover body, the imaging window of the dome type camera can be saved even in an environment where a highly viscous oil film adheres. It can be maintained in a good state without cleaning.

1 is an exploded perspective view showing a dome type camera cover according to the present invention and a dome type camera to which the dome type camera cover is attached. The perspective view which shows the state which attached the dome type camera cover to the dome type camera Side view of FIG. 1 viewed from the right side Partial enlarged sectional view showing the operation of attaching the fixed body to the dome type camera Partial expanded sectional view which shows the state before and behind attachment of a cover body and a fixed body Partial expanded sectional view which shows a bending of the flange at the time of engaging / detaching | releasing a cover body with a fixed body

Hereinafter, embodiments of a dome-shaped camera cover according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is an exploded perspective view showing a dome type camera cover 1 according to the present invention and a dome type camera 100 to which the dome type camera cover 1 is attached. FIG. 2 is a perspective view showing a state where the dome type camera cover 1 is attached to the dome type camera 100. FIG. 3 is a side view of FIG. 1 viewed from the right side in the drawing.

The dome type camera 100 includes a housing 103 including a camera base 101 that houses a camera unit and a hemispherical imaging window 102 that is locked to the camera base 101. The dome type camera 100 is installed on a ceiling or the like, images an area to be monitored through an imaging window 102, and sends a video signal from the camera unit to an external monitoring device or recording device (not shown).
In the present embodiment, the vertical direction will be described with reference to the direction illustrated in FIGS. 1 to 3, taking as an example the case where the dome type camera 100 is installed on the ceiling.

  The dome type camera cover 1 includes a fixed body 2 attached to the dome type camera 100 and a cover body 3 engaged with the fixed body 2. The fixed body 2 is fitted on the outer periphery of the dome type camera 100, the fixed body 2 and the dome type camera 100 are fixed, and the cover body 3 is engaged with the fixed body 2 as shown in FIG. Covers the entire imaging window 102 of the dome type camera 100. In this way, by covering the imaging window 102 of the dome type camera 100 with the cover body 3, it is possible to prevent the imaging window 102 from being contaminated with oil or the like. Further, when the cover body 3 is contaminated, it is possible to easily improve the imaging field of view of the dome type camera 100 by removing it from the fixed body 2 and replacing it with another cover body 3. Become.

First, the cover body 3 will be described.
The cover body 3 is made of a material that transmits light and is transparent or translucent. The cover body 3 has a hemispherical dome portion 31, and a flange portion 32 is provided on the peripheral portion of the dome portion 31 so as to protrude outward.

The cover body 3 is molded from a highly flexible resin material and has flexibility. As the resin material, general-purpose plastics are preferable, and examples thereof include polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyvinylidene chloride, polystyrene (PS), and polyvinyl acetate (PVAc). In this embodiment, an example of molding with polyvinyl chloride (PVC) will be described.
The dome portion 31 and the flange portion 32 may be formed of different materials. In this case, at least the dome portion 31 only needs to be transparent or translucent, and at least the flange portion 32 is flexible. What is necessary is just to shape | mold with a raw material.

Next, the fixed body 2 will be described.
The fixed body 2 includes an annular case 21 having a hollow portion 20 inside. The case 21 has a rib 22 projecting inwardly on the inner peripheral surface. A camera fixing portion 23 that engages with the base 101 of the dome type camera 100 is provided above the rib 22, and below the rib 22. Is provided with an engaging piece 24 which is engaged with the cover body 3 and supports the cover body 3. Further, the fixed body 2 has an annular support auxiliary portion 25 on its inner periphery. A plurality of camera fixing portions 23 and supporting pieces 24 are provided on the inner periphery of the case 21. In this embodiment, the camera fixing portions 23 and the engaging pieces 24 are provided at three locations at regular intervals as shown in FIG. 1.
However, the present invention is not limited to this, and the camera fixing portion 23 and the engaging piece 24 may be provided at least at two or more locations on the inner periphery of the case 21.

  The configuration of the camera fixing unit 23 will be described with reference to FIG. FIG. 4 is an enlarged cross-sectional view of a portion A indicated by a two-dot chain line in FIG. The camera fixing portion 23 has a base plate fixed to the rib 22 of the case 21 and a distal end extending upward from the inner periphery of the case 21, and is provided on the inner peripheral side of the support plate 231. A fastening piece 232 having a proximal end fixed to the rib 22 of the case 21 and a distal end extending upward from the distal end of the support plate 231 is provided. The support plate 231 is formed with a screw hole 234 through which a tightening screw 233 serving as a tightening adjusting member is inserted at the distal end side. The fastening screw 234 is inserted from the outer peripheral side of the case 21 of the support plate 231, and the tip abuts against the fastening piece 232. The fastening piece 232 is formed of a material that is thinner or more flexible than the support plate 231, such as an elastically deformable metal thin plate or a rubber material, and is deformed so as to be bent toward the inside of the case 21 by the pressing force of the fastening screw 233.

  Hereinafter, a case where the fixed body 2 is fixed to the dome type camera 100 will be described. FIG. 4A shows a state in which the fixed body 2 is fitted on the outer periphery of the dome type camera 100. First, as shown in FIG. 4A, the fixed body 2 is positioned by being fitted on the outer periphery of the base 101 above the imaging window 102 of the dome type camera 100. In this state, when the tightening screw 233 is screwed into the support plate 231, the tip of the tightening screw 233 presses the tightening piece 232, and the tightening piece 232 is bent toward the inside of the case 21 so that the base portion of the dome type camera 100 is obtained. 101 abuts. FIG. 4B shows a state where the fastening piece 232 is bent inward of the case 21 and is in contact with the base 101 of the dome type camera 100 as described above. Then, by similarly screwing a fastening screw 233 into each camera fixing portion 23, the base portion 232 of the dome-type camera 100 is fastened by a plurality of fastening pieces 232, and the fastening portion 2 causes the dome to be dome by this fastening force. Fixed to the mold camera 100.

Next, the support piece 24 and the support auxiliary portion 25 will be described with reference to FIG. 5 is an enlarged cross-sectional view of a portion A indicated by a two-dot chain line in FIG. 3 as in FIG.
The support piece 24 is erected with the base end fixed to the rib 21 of the case 2 and the tip facing downward. A hook-like claw 241 is formed at the tip of the engaging piece 24 so as to face the inside of the case 21. When the cover body 3 and the fixed body 2 are engaged, the hook-shaped claw 241 is engaged with the flange 32 of the cover body 3. The occlusal operation with the flange 32 will be described later. FIG. 5A shows a state before the cover body 3 and the fixed body 2 are engaged, and FIG. 5B shows a state where the cover body 3 and the fixed body 2 are engaged.

  As shown in FIG. 5, above the hook-shaped claw 241 of the support piece 24, an annular support auxiliary portion 25 having a hollow portion inside is provided along the inner periphery of the case 21. The support assisting portion 25 is provided so as to be movable between the rib 22 of the case 21 and the hook-shaped claw 241. When attached to the dome-type camera 100 oriented in the vertical direction as shown in the figure, It moves downward due to its own weight and is in contact with the hook-shaped claw 241 (FIG. 5A). Further, in a state where the hook-shaped claw 241 is engaged with the flange 32 (the cover body 3 is attached to the fixed body 2), the support auxiliary portion 25 comes into contact with the flange 32 by its own weight (see FIG. 5 (b)). As a result, the engagement between the fixed body 2 and the cover body 3 is pressed by the weight of the support auxiliary portion 25, and the engagement between both is supported to prevent rattling and the engagement is unintentionally released. Can be prevented.

In the present embodiment, the support auxiliary portion 25 is formed of hard rubber. By forming the support assisting portion 25 with an elastic material in this way, when the fixed body 2 is fitted into the dome-type camera 100, the support assisting portion 25 movable within a certain range moves up, down, left and right. Even if it comes into contact with the dome type camera 100, the imaging window 102 and the base 103 of the dome type camera 100 are not damaged.
In addition, the support auxiliary | assistant part 25 is not limited to the example which forms the whole with an elastic material, The inner edge part should just be formed with elastic materials, such as a rubber material and a flexible resin.

Next, a configuration in which the flange 32 of the cover body 3 is engaged with the engaging piece 241 of the fixed body 2 will be described with reference to FIG. 6 is an enlarged cross-sectional view of a portion A indicated by a two-dot chain line in FIG. 3 as in FIGS. 6A is a view showing the bending of the flange 32 when the cover body 3 is engaged with the fixed body 2, and FIG. 6B is a view showing that the cover body 3 is detached from the fixed body 2. It is a figure which shows the bending of the flange 3 at the time of releasing | separating.
As shown in FIG. 6 (a), when the user holds the cover body 3 with his hand and pushes the opening side of the cover body 3 into the fixed body 2, the flange 32 of the cover body 3 has a hook-like shape of the support piece 24. The flange 32 comes into contact with the claw 241 and is elastically deformed by the pushing force. At this time, the support assisting portion 25 is pushed by the cover body 3 by the pushing force and moves upward. Then, the flanged nail 241 and the flange 32 are engaged with each other by entering the inside of the gap formed between the hook-shaped claw 241 and the supporting auxiliary portion 25 so that the elastically deformed flange 32 escapes from its own elastic force. When the cover body 3 is released from the pressing force of the user, as shown in FIG. Is applied to assist the stabilization of the engaged state between the fixed body 2 and the cover body 3.

As a result, when the user attaches the cover body 3 to the fixed body 2 fixed in advance to the dome-type camera 100, the flange portion 32 is deformed and the engaging piece 24 is simply pushed by pushing the cover body 3. The cover body 3 can be easily attached to the fixed body 2 even with one hand, and the workability in a work at a high place can be improved.
Further, after the cover body 3 is attached to the fixed body 2, the engagement assisting portion 25 assists to stabilize the engagement state between the fixed body 2 and the cover body 3, so that the engagement is inadvertently released. Can be prevented.

  Further, in a state where the fixed body 2 and the cover body 3 are engaged, as shown in FIG. 6B, the user holds the cover body 3 by hand and removes the cover body 3 from the fixed body 2. When pulled in the separating direction (downward), the flange 32 of the cover body 3 is elastically deformed against the pressing force between the hook-shaped claw 241 and the supporting auxiliary portion 25. Further, by pulling the cover body 3 downward, the engagement between the flange 32 and the hook-shaped claw 241 is released, and the cover body 3 is detached from the fixed body 2. At this time, as shown in FIG. 5A, the support assisting portion 25 moves downward by its own weight and comes into contact with the hook-shaped claw 241.

As a result, when the cover 3 attached to the fixed body 2 needs to be replaced due to contamination or the like, the flange 32 is elastically deformed simply by pulling the cover body 3 away from the fixed body 2. The cover body 3 can be easily removed.
In the present embodiment, not only the flange 32 but also the entire cover body 3 is formed of a highly flexible resin material, so that the dome portion 31 of the cover body 3 is also elastically deformed as necessary. It becomes possible to make attachment and removal easier.

The embodiment of the dome type camera cover 1 has been described above.
In the embodiment described above, the case 21 is formed in an annular shape, and the support auxiliary portion 25 on the inner periphery of the case 21 is also formed in an annular shape. However, the present invention is not limited to this. That is, when the base of the dome type camera is not a columnar shape as shown in the present embodiment but a prismatic shape, the case of the dome type camera cover also has a rectangular shape with a rectangular hollow portion inside. It may be formed in an arbitrary shape. In this case, the support auxiliary part may also be formed in an arbitrary shape such as a rectangular shape in accordance with the shape of the inner periphery of the case.
In addition, those skilled in the art can use various modifications in accordance with the embodiment to be implemented within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Dome-type camera cover 2 Fixed body 20 Hollow part 21 Case 22 Rib 23 Camera fixing part 231 Support plate 232 Tightening piece 233 Tightening screw 234 Screw hole 24 Engagement piece 241 Hook-shaped claw 25 Engagement auxiliary part 3 Cover body 31 Dome part 32 Flange 100 Dome type camera 101 Base part 102 Imaging window 103 Housing

Claims (5)

A dome-shaped camera cover that covers the imaging window of the dome-shaped camera having a camera base attached to an installation target and a hemispherical imaging window locked to the camera base,
A fixed body which has a hollow portion on the inside and is inserted through the camera base portion into the hollow portion and engages with an outer peripheral surface of the camera base portion;
A hemispherical cover body having at least the property of transmitting light,
A dome-shaped camera cover, wherein the fixed body and the cover body are detachably configured.
Furthermore, the cover body is
A flange having flexibility and formed in the peripheral portion;
The fixed body is
The dome-shaped camera cover according to claim 1, further comprising a plurality of engaging pieces that engage with the flange and support the cover body at an end portion on the imaging window side.
Furthermore, the fixed body is
The dome-shaped camera cover according to claim 2, further comprising a movable support auxiliary part that can freely contact / separate with respect to the support piece from the installation target side of the support piece.
4. The dome-type camera cover according to claim 3, wherein the support auxiliary portion has a hollow portion inside and is provided along the inside of the fixed body, and at least an inner edge portion is formed of an elastic material.
The dome-shaped camera according to any one of claims 1 to 4, wherein the cover body is formed of any one of polyethylene resin, polypropylene resin, polyvinyl chloride resin, polyvinylidene chloride resin, polystyrene resin, and polyvinyl acetate resin. cover.

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