JP2011227272A - Monitoring camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monitoring camera of which an imaging lens can widely face the outside without removing its lens cover.SOLUTION: A monitoring camera 20 comprises a lens cover 3 attached adjacent to a housing 2 so as to cover an imaging lens 22. The lens cover 3 locks cover extension parts 4 extending from the lens cover 3 toward the side of the housing 2 in the housing 2 at a position spaced at a predetermined interval from the housing 2.

Description

  The present invention relates to a surveillance camera, and more particularly to a surveillance camera with a devised lens cover structure.

In recent years, surveillance cameras are widely used for the purposes of crime prevention, disaster prevention, measurement, recording, and the like, and those equipped with an imaging lens so as to protrude from the camera body are known.
Conventionally, in order to cover the imaging lens, the camera body itself is attached with a lens cover (see, for example, Patent Document 1), or the housing that houses the camera body is attached with a lens cover (for example, Patent Documents 2 and 2). Patent document 3 etc. are known.
According to such a lens cover structure, the imaging lens exposed to the outside can be protected by the lens cover.

On the other hand, the surveillance camera needs to periodically expose the imaging lens to the outside in order to adjust, for example, focus, zoom, angle of view, and maintenance and inspection.
Incidentally, in the lens cover structures described in Patent Document 1 and Patent Document 3, the imaging lens can be exposed to the outside by removing the lens cover from the camera body or the housing. Further, in the lens cover structure described in Patent Document 2, the lens cover is formed of a double cylinder inside and outside, and either the inside or outside cylinder is provided so that the openings formed on the peripheral surfaces of the cylinders overlap each other. By rotating it, the imaging lens can be exposed to the outside through the opening.

JP 2001-69381 A Japanese Patent No. 4017946 Japanese Patent No. 3901545

However, surveillance cameras are often arranged at high places. For example, in the lens cover structures described in Patent Document 1 and Patent Document 3, a place for the lens cover removed to expose the imaging lens is secured. There is a hard problem.
In the lens cover structure described in Patent Document 2, the size of the opening that exposes the imaging lens to the outside is limited to the size of the opening formed on the peripheral surface of the lens cover. There is a problem that cannot be fully met. As a result, it may take time for adjustment and maintenance inspection of the imaging lens.
Therefore, there is a demand for a surveillance camera that can greatly expose the imaging lens to the outside without removing the lens cover.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a surveillance camera that can greatly expose an imaging lens to the outside without removing a lens cover.

  The present invention that has solved the above problem is a surveillance camera having an imaging lens so as to protrude from the camera body, and is disposed adjacent to the housing so as to cover the imaging lens and a housing that houses the camera body. A lens cover, a cover extending portion provided on the lens cover so as to extend from the lens cover toward the housing, and the lens cover provided on the housing when the lens cover is separated from the housing A guide support portion for guiding and supporting the cover extension portion along the separation direction, and a position where the lens cover is separated from the housing by a predetermined distance. And a locking means for locking the protruding portion.

  In addition, the present invention that has solved the above-described problems is a surveillance camera having an imaging lens so as to protrude from the camera body, and a housing that houses the camera body, and adjacent to the housing so as to cover the imaging lens. A lens cover, a housing extending portion provided on the housing so as to extend from the housing toward the lens cover, and the lens cover, the lens cover being separated from the housing. The housing extension at a position where the lens cover is separated by a preset distance from the housing, and the guided support part supported while being guided along the extending direction of the housing extension part. And a locking means for locking the lens cover to the portion.

  According to the present invention, it is possible to provide a surveillance camera that can greatly expose the imaging lens to the outside without removing the lens cover.

It is a perspective view of the surveillance camera which concerns on embodiment of this invention. It is a disassembled perspective view of the surveillance camera which concerns on embodiment of this invention. It is a side view of the lens cover and cover extension part which constitute the surveillance camera concerning the embodiment of the present invention. (A) is IVa-IVa sectional drawing of FIG. 2, (b) is IVb-IVb sectional drawing of FIG. (A)-(c) is sectional drawing corresponding to the VV cross section of FIG. 1 which shows operation | movement of the surveillance camera which concerns on embodiment of this invention, Comprising: Description of a camera main body is abbreviate | omitted and imaging lens It is the figure which represented only the outline with the broken line. It is structure explanatory drawing of the surveillance camera which concerns on other embodiment of this invention.

  Hereinafter, embodiments of a surveillance camera of the present invention will be described in detail with reference to the drawings as appropriate. In the following description, the front-rear, left-right, up-down directions are based on the front-rear, left-right, up-down directions of the surveillance camera shown in FIG.

As shown in FIG. 1, the lens cover structure 1 (housing 2 and lens cover 3) of the surveillance camera 20 according to this embodiment is formed of a box whose outer shape has a substantially rectangular parallelepiped shape.
In FIG. 1, reference numeral 21 denotes a camera body, reference numeral 22 denotes an imaging lens, reference numeral 2 denotes a housing, and reference numeral 3 denotes a lens cover.

The surveillance camera 20 according to the present embodiment is a fixed video camera (stationary camera), and as shown in FIG. 2, a camera main body 21 and an imaging lens provided so as to protrude forward from the camera main body 21. 22, a housing 2, and a lens cover 3.
The camera body 21 includes a circuit board 24 in which various electric circuit components are assembled between a front bracket 23 and a rear bracket 25 made of a substantially rectangular plate.
The imaging lens 22 incorporates a lens group (not shown) and an imaging element (not shown) disposed behind the lens group, and the outer shape thereof has a substantially cylindrical shape. The imaging lens 22 includes a lever 22a for adjusting the focus, zoom, angle of view, etc. of the monitoring camera 20.

  As shown in FIG. 1, the surveillance camera 20 according to the present embodiment includes a housing 2 that houses a camera body 21 and a lens cover 3 that is disposed in front of the housing 2 and adjacent to the housing 2. As shown in FIG. 4, the cover extending portion 4 provided on the lens cover 3 so as to extend from the lens cover 3 toward the housing 2 side, and the cover extending portion 4 are supported while being guided in a predetermined direction to be described later. And a guide support portion 5 for locking the cover extension portion 4 with respect to the housing 2.

As shown in FIG. 2, the housing 2 is formed of a bottomed cylindrical body having a rectangular cross-sectional shape. The size of the opening of the housing 2 is set such that the front bracket 23 and the rear bracket 25 of the camera body 21 can be accommodated. Further, the inner depth of the housing 2 (the length in the front-rear direction on the inner side) is longer than the distance between the front bracket 23 and the rear bracket 25 including the thicknesses of the front bracket 23 and the rear bracket 25. Is set to That is, the depth inside the housing 2 is set so that the front bracket 23 can substantially block the opening of the housing 2 when the camera body 21 is accommodated in the housing 2.
In FIG. 2, reference numeral 23 a denotes notches provided on both the left and right sides of the front bracket 23. This notch portion 23a enables a cover extension portion 4 (described later) to advance and retreat into the housing 2 when the front bracket 23 closes the opening of the housing 2.
Examples of the material for forming the housing 2 include resin and metal.

As shown in FIGS. 1 and 2, the lens cover 3 is formed of a cylindrical body whose cross-sectional shape is substantially the same as the cross-sectional shape of the housing 2. The size of the opening on the rear side of the lens cover 3 is set to the same size as the opening on the front side of the housing 2.
The inner depth of the lens cover 3 (the length in the front-rear direction on the inner side) is such that when the rear opening of the lens cover 3 is aligned with the front opening of the housing 2, the imaging lens 22 is positioned inside the lens cover 3. Is set to a length that fits in
The front side of the lens cover 3 is closed with a circular opening 3a facing the front end of the imaging lens 22. Incidentally, the circular opening 3a may be sealed with a light-transmitting plate material such as glass or resin.
Examples of the material for forming the lens cover 3 include a resin and a metal.

A pair of cover extending portions 4 is provided on the left and right sides of the lens cover 3 as shown in FIG.
The cover extending portions 4 and 4 are formed as flat plates that are long in the front-rear direction, and extend from the lens cover 3 toward the housing 2 as described above. More specifically, as shown in FIG. 3, the cover extension portion 4 has a base end connected to a substantially central portion in the vertical direction at the rear end of the lens cover 3, and further rearward with the same width from the base end. It extends to.
The cover extension 4 is preferably formed integrally with the lens cover 3.
Examples of a material for forming the cover extension 4 include a resin and a metal.

  As shown in FIG. 2, the guide support portion 5 is formed by grooves provided on the left and right inner walls of the housing 2. More specifically, as shown in FIG. 4A, the guide support portion 5 includes a cover extension portion 4 and a cover extension portion 4 so that the cover extension portion 4 (see FIG. 3) is accommodated in the front-rear and vertical directions of the housing 2. They are formed with substantially the same length and width. And as shown in FIG.4 (b), the outer half of the left-right direction of the cover extension part 4 (it represents with a virtual line in FIG.4 (b)) is partially in the groove | channel as the guide support part 5. As shown in FIG. To be accepted. In other words, the guide support portion 5 guides the received cover extension portion 4 so as to be slidable in the front-rear direction (direction perpendicular to the paper surface of FIG. 4B), and receives the received cover extension portion. It has the structure which supports so that 4 may not shake to an up-down direction.

As will be described later, the locking means 6 is arranged such that the lens cover 3 shown in FIG. 2 is separated from the housing 2 at a position separated from the housing 2 by a preset distance so that the imaging lens 22 faces the outside largely. The cover extension 4 is locked to the housing 2 so that the 3 does not leave.
Specifically, the locking means 6 includes a first protrusion (convex portion) 6a provided at the tip of the cover extension portion 4 shown in FIG. 2, and a guide support portion 5 in the vicinity of the opening of the housing 2 shown in FIG. And a first hole (concave portion) 6b provided in the groove.
As shown in FIG. 2, the first protrusion 6 a has a hemispherical shape that protrudes outward in the left-right direction at the tip of the cover extension portion 4. And the 1st hole 6b is formed in the magnitude | size which can receive the 1st protrusion 6a so that fitting / detaching is possible. In addition, although the 1st hole part 6b in this embodiment is provided so that the inside and outside of the housing 2 may be penetrated, the non-through hole of the magnitude | size in which the 1st protrusion 6a is settled may be sufficient.
And the cover extension part 4 can be rotated centering on the 1st protrusion 6a by the 1st protrusion 6a fitting in the 1st hole 6b.

Further, as shown in FIG. 2, the surveillance camera 20 according to the present embodiment further includes an angle holding mechanism 7 that holds the rotation angle of the cover extending portion 4 that rotates about the first protrusion 6a at a predetermined angle. I have.
The angle holding mechanism 7 includes an inclined surface formed in front of a groove as the guide support portion 5. The inclined surface has a downward slope toward the front, and receives the cover extension 4 that rotates around the first protrusion 6a received in the first hole 6b, as will be described later. . That is, the angle holding mechanism 7 holds the rotation angle of the lens cover 3 that rotates about the first protrusion 6a via the cover extension portion 4 in accordance with the formation angle of the inclined surface. It is configured.

The surveillance camera 20 according to the present embodiment further includes auxiliary locking means 8.
The auxiliary locking means 8 includes a second hole 8b and a second protrusion 8a shown in FIG.
The second hole portion 8b has a size that allows the first protrusion 6a to be removably received when the cover extension portion 4 is inserted into a groove serving as the guide support portion 5 and fits in the guide support portion 5. It is provided at the rear. The second hole portion 8b in the present embodiment is provided so as to penetrate the inside and outside of the housing 2, but may be a non-through hole having a size that can accommodate the first protrusion 6a.
The second protrusion 8a has a cover extension portion so that it can be received in the first hole portion 6b when the cover extension portion 4 is inserted into the groove as the guide support portion 5 shown in FIG. 4 is provided at the base end.
More specifically, as shown in FIGS. 2 and 3, the second protrusion 8 a is provided with a U-shaped slit 8 d in the flat cover extension portion 4, so that the base end of the cover extension portion 4 is provided. It is provided on a tongue piece 8c formed so as to extend from the side.
As shown in FIG. 2, the second protrusion 8a has a hemispherical shape that protrudes outward in the left-right direction at the tip of the tongue piece 8c.
In the surveillance camera 20 according to this embodiment, the first protrusion 6a and the second protrusion 8a with respect to the first hole 6b and the second hole 8b can be changed by appropriately changing the heights of the first protrusion 6a and the second protrusion 8a. The fitting / removing feeling of the two protrusions 8a can be adjusted.

Next, the operation of the monitoring camera 20 according to the present embodiment will be described.
As shown in FIG. 5A, in the surveillance camera 20, when the lens cover 3 is disposed adjacent to the front of the housing 2, the lens cover 3 has a circular front end of the imaging lens 22. The periphery of the imaging lens 22 is covered so as to face the opening 3a. As a result, the lens cover 3 can protect the imaging lens 22.
At this time, the cover extension part 4 is inserted into the groove as the guide support part 5 (see FIG. 2) and the first protrusion 6a is fitted into the second hole part 8b (see FIG. 2). The second protrusion 8a is fitted in the first hole 6b (see FIG. 2). As a result, the lens cover 3 is positioned so as to be adjacent to the front of the housing 2.

Next, when the user performs operations such as adjustment of the imaging lens 22 and periodic inspection, as shown in FIG. 5B, when the lens cover 3 is moved away from the housing 2, the cover extension portion The first protrusion 6a is detached from the second hole 8b by bending the tip of 4 toward the inside. And the 2nd protrusion 8a remove | deviates from the 1st hole 6b because the front-end | tip of the tongue piece 8c bends inward.
At this time, the cover extension portion 4 is supported while being guided by the guide support portion 5, and is slidable forward in a groove as the guide support portion 5.

And as shown in FIG.5 (c), when the front-end | tip of the cover extension part 4 arrives at the front end of the guide support part 5, the front-end | tip of the cover extension part 4 which was bent will be elastically restored, and 1st protrusion 6a will be restored. Fits into the first hole 6b. As a result, the cover extension 4 can be rotated around the first protrusion 6a. That is, the lens cover 3 rotates downward about the first protrusion 6 a via the cover extension 4. That is, the imaging lens 22 faces greatly outside in front of the housing 2.
Then, the cover cover 4 that rotates around the first protrusion 6a received in the first hole 6b is received by the angle holding mechanism 7 formed of an inclined surface, so that the lens cover 3 has the imaging lens. The rotating angle with 22 facing greatly outside is maintained and held in the housing 2.
In addition, in FIG.5 (c), the code | symbol 8b is a 2nd hole part.

  According to the monitoring camera 20 as described above, when the lens cover 3 is separated from the housing 2 by a preset distance so that the imaging lens 22 faces the outside, the locking means 6 is brought into contact with the housing 2. In contrast, since the cover extension 4 is locked, unlike the conventional surveillance camera (see, for example, Patent Documents 1 and 3), the lens cover 3 is secured. There is no need.

  Further, according to the surveillance camera 20, the lens cover 3 separated from the housing 2 rotates downward about the first protrusion 6a via the cover extension portion 4, so that the imaging lens 22 is largely outside. You can face it.

  Further, according to the monitoring camera 20, the lens cover 3 can be held at a predetermined rotation angle by the angle holding mechanism 7, so that the lens cover 3 can be used during operations such as adjustment of the imaging lens 22 and periodic inspection. Can be prevented from rotating unintentionally and obstructing the work.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, It can implement with a various other form. In addition, although other embodiment of this invention is described below, the same code | symbol is attached | subjected about the component same as the said embodiment, and the detailed description is abbreviate | omitted.

  In the above embodiment, when the lens cover 3 is separated from the housing 2, the cover extending portion 3 extending from the lens cover 3 is locked to the housing 2. The lens cover 3 may be configured to be locked to the extending portion from the side. Next, FIG. 6 referred to is a configuration explanatory diagram of a surveillance camera according to another embodiment of the present invention. In addition, this FIG. 6 is a figure corresponding to FIG.5 (c) based on the said embodiment.

As shown in FIG. 6, the monitoring camera 30 includes a housing extension portion 14 that extends from the housing 2 toward the lens cover 3 side. The housing extension 14 is formed integrally with the housing 2.
The housing extension 14 is configured in the same manner as the cover extension 4 (see FIG. 2) in the above embodiment except that it extends from the housing 2, and a first protrusion is formed at the tip of the housing extension 14. 6a and a second protrusion 8a at the tip of a tongue piece 8c provided at the base end.

  Further, the surveillance camera 30 has a guided support portion 15 formed on the lens cover 3. The guided support portion 15 is formed by a groove similar to the guide support portion 5 (see FIG. 2) in the above-described embodiment, and guides the housing extension portion 14 contained in the groove so that it can slide. It becomes the structure which supports.

  Moreover, as shown in FIG. 6, the guided support part 15 is provided with the 2nd hole part 8b similarly to the guide support part 5 (refer FIG. 2) in the said embodiment. Although not shown in the drawing, the second hole portion 8b is configured such that when the lens cover 3 is disposed adjacent to the front of the housing 2, the first protrusion 6a of the housing extension portion 14 is detachably fitted. Is formed.

Moreover, the guided support part 15 is provided with the 1st hole part 6b in which the 1st protrusion 6a of the housing extension part 14 fits detachably similarly to the said embodiment. The first protrusion 6a and the first hole 6b correspond to locking means, the first protrusion 6a corresponds to a convex part, and the first hole 6b corresponds to a concave part.
Incidentally, although not shown, when the lens cover 3 is disposed in the first hole 6b so as to be adjacent to the front of the housing 2, it is formed at the base end of the housing extension 14 as in the above embodiment. The provided second protrusion 8a will be detachably fitted.

  As shown in FIG. 6, when the lens cover 3 is separated from the housing 2 and the imaging lens 22 faces the outside, the surveillance camera 30 has a first protrusion in the first hole 6b as in the above embodiment. By fitting 6a, the lens cover 3 is locked with respect to the housing extension 14, and the lens cover 3 is rotated downward about the first protrusion 6a.

  Similarly to the above-described embodiment, the monitoring camera 30 includes an angle holding mechanism 7 formed of an inclined surface that holds the lens cover 3 rotated downward so as to have a predetermined rotation angle.

  According to such a monitoring camera 30, the same effect as that of the above embodiment can be obtained. Further, according to the monitoring camera 30, the first protrusion 6a serving as the rotation center of the lens cover 3 can be disposed closer to the tip of the imaging lens 22, so that the rotation radius of the lens cover 3 can be reduced. it can. As a result, since the surveillance camera 30 narrows the interference range of the rotating lens cover 3, the selection range of the installation location is expanded.

  Moreover, in the said embodiment, although the 2nd protrusion 8a as the auxiliary latching means 8 was provided in the base end of the cover extension part 4, the structure which abbreviate | omitted this 2nd protrusion 8a may be sufficient as this invention. In the surveillance camera 20 in which the second protrusion 8a is omitted, the distance between the notch 23a of the front bracket 23 and the inner wall of the housing 2 shown in FIG. By doing so, it is possible to more reliably prevent the tip of the cover extension portion 4 having the first protrusion 6a from slipping out of the housing 2.

  Moreover, in the said embodiment, although the guide support part 5 is provided in the inner wall of the housing 2, this invention may provide the guide support part 5 in the outer wall of the housing 2, and may be provided in wall thickness. .

  Moreover, in the said embodiment, although the 1st protrusion 6a (convex part) was provided in the cover extension part 4 side and the 1st hole part 6b (recessed part) was provided in the housing 2 side as the latching means 6, this invention. Can be provided with a concave portion on the cover extension portion 4 side and a convex portion on the housing 2 side.

DESCRIPTION OF SYMBOLS 1 Lens cover structure 2 Housing 3 Lens cover 4 Cover extension part 5 Guide support part 6 Locking means 6a 1st protrusion 6b 1st hole part 7 Angle holding mechanism 14 Housing extension part 15 Guided support part 20 Surveillance camera 21 Camera Body 22 Imaging lens 30 Surveillance camera

Claims (8)

A surveillance camera having an imaging lens so as to protrude from the camera body,
A housing for housing the camera body;
A lens cover disposed adjacent to the housing so as to cover the imaging lens;
A cover extending portion provided on the lens cover so as to extend from the lens cover toward the housing;
A guide support portion provided in the housing and supporting the cover extension portion while guiding the cover extension along the separation direction when the lens cover is separated from the housing;
Locking means for locking the cover extension to the housing at a position where the lens cover is separated from the housing by a predetermined distance;
A surveillance camera comprising: The surveillance camera according to claim 1,
The locking means is provided on one of the tip of the cover extension and the housing, and on the other end of the cover extension and the housing. It is formed with a recess that accepts removably,
The surveillance camera, wherein the lens cover is rotatable through the cover extension part around the convex part received in the concave part. The surveillance camera according to claim 2,
The surveillance camera, wherein the housing further includes an angle holding mechanism that holds the lens cover at a predetermined rotation angle set in advance. The surveillance camera according to any one of claims 1 to 3,
The surveillance camera, wherein the lens cover and the cover extension are integrally formed. A surveillance camera having an imaging lens so as to protrude from the camera body,
A housing for housing the camera body;
A lens cover disposed adjacent to the housing so as to cover the imaging lens;
A housing extension provided in the housing so as to extend from the housing toward the lens cover side;
A guided support portion provided on the lens cover and supported while being guided along the extending direction of the housing extending portion when the lens cover is separated from the housing;
Locking means for locking the lens cover to the housing extension at a position where the lens cover is separated from the housing by a preset distance;
A surveillance camera comprising: The surveillance camera according to claim 5,
The locking means is provided on one of the tip of the housing extension and the lens cover, and on the other of the tip of the housing extension and the lens cover, and the projection Formed with a recess that removably receives
The surveillance camera according to claim 1, wherein the lens cover is rotatable around the convex portion received in the concave portion. The surveillance camera according to claim 6,
The surveillance camera, further comprising an angle holding mechanism for holding the lens cover at a predetermined rotation angle set in advance. The surveillance camera according to any one of claims 5 to 7,
The surveillance camera, wherein the housing and the housing extension are integrally formed.

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