JP4871057B2 - Security lens - Google Patents

Description

  The present invention relates to a security lens that can be attached to a door and can observe the state of the outside from the room over a wide range, and particularly relates to a security lens that can add various functions depending on the installation environment of the security lens.

  Security lenses that allow visitors to observe visitors from the interior with their doors locked are becoming increasingly important as security awareness increases today.

In order to meet these expectations, the applicant has developed and manufactured various security lenses as a top manufacturer of security lenses (Patent Documents 1 to 5).
JP 2000-297583 A JP2002-30875 JP 2004-84197 A JP2004-1000045 JP 2006-16950 A

  However, on the other hand, as the importance of security lenses increases, the environment and area in which they are installed and used change and expand, and specifications in new environmental conditions are required, and there are new technical issues. appear.

Today's technical problem is first a lens antifogging measure (antifogging measure) that is likely to occur when the temperature difference between the outdoor and indoor is large. Such an event is particularly likely to occur in cold regions.
Secondly, countermeasures against salt damage (salt damage countermeasures) that are likely to occur when salt is attached. Such an event is particularly likely to occur in coastal areas.
Thirdly, it is a waterproof measure against rainwater and the security lens itself that may enter the inside of the door from the mounting hole of the security lens provided in the door.
Fourthly, there is a countermeasure (rotation countermeasure) against the danger that the security lens will be removed from the outdoor side by a suspicious person. This can complement the rotation prevention mechanism disclosed in Patent Document 1 for preventing removal.
Fifth, there is a countermeasure (back cover countermeasure) against a suspicious person who asks the interior of the room from the outside through a security lens.
This further enhances the back cover mechanism disclosed in Patent Documents 4 and 5.
Sixth, to increase the incidental value of a security lens that can take these measures.

The invention of the present application aims to provide a security lens capable of adding various functions according to the setting environment and the use environment by mainly solving the third problem among the first to sixth problems. And

In order to achieve this object, the first cylindrical body and the second cylindrical body are mounted through mounting holes provided in the door, and the first cylindrical body is a chamber of the mounting hole. An outdoor flange portion located outside, a fitting portion fitted into the attachment hole, an indoor side end portion located on the indoor side of the attachment hole, and a lens system, The second cylindrical body includes a screwed portion to be screwed from an indoor side end portion of the first cylindrical body, an eyepiece end portion facing the indoor side, and the outdoor flange portion and the A hook portion, a hook portion with a plate portion , or a plate portion that can be attached between the attachment holes and between the attachment hole and the eyepiece end portion, and a concave portion formed in the outdoor flange portion and provided in the concave portion. The outer edge of the first cylindrical body is fitted into the inner periphery of the recess, Comprising a response to hole, and an elastic sealing material which is colored black, according to security lens (claim 1, characterized in that is crimped between the exit surface of the lens disposed in the recess the recess Invention).

In the above invention, the hook portion is mounted so as to be capable of idling via an idling ring arranged so as to be idly rotatable with the fitting portion as an axis between the outdoor flange portion and the mounting hole. It is a security lens.

In the above invention, the hook portion with the plate portion is mounted so as to be capable of idling via an idling ring disposed so as to be idly rotatable with the fitting portion as an axis between the outdoor flange portion and the mounting hole. It is a security lens characterized by being.
In the above invention, the plate portion is mounted so as to be capable of idling via an idling ring disposed so as to be idly rotatable with the fitting portion as an axis between the outdoor flange portion and the mounting hole. (An invention according to claim 2).

The security lens according to the invention, wherein the hook portion is attached so as to be able to idle via an idle rotation ring portion formed in the fitting portion between the outdoor flange portion and the attachment hole. is there.

In the above invention, the hook portion with the plate portion is mounted so as to be capable of idling via an idling ring portion formed in the fitting portion between the outdoor flange portion and the mounting hole. It is a security lens.

The security lens according to the invention, wherein the plate portion is mounted so as to be idled via an idled ring portion formed in the fitting portion between the outdoor flange portion and the attachment hole. (Invention described in claim 3).

  According to the security lens of the present invention, in addition to the original function of the security lens, a new function can be attached to the door to which the security lens is attached by a hook portion or the like. In addition, the incidental value of a security lens for anti-rotation can be increased.

(First embodiment Anti-rotation measures + attached functions)
An embodiment of a security lens according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view of one half of the security lens according to the first embodiment, and FIG. 2 is an exploded perspective view of the security lens.
Note that, in these drawings and the drawings described below, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.
Further, the illustration of the lens system of the security lens may be omitted in each drawing.

The security lens A according to the first embodiment includes a first cylindrical body (inner cylinder 1) and a second cylinder that are screwed through mounting holes 30 and 40 formed in the door plates 3 and 4 of the double door. It consists of a shape body (outer cylinder 2).
The inner cylinder 1 is positioned on the indoor side of the mounting hole 30, the outdoor flange portion 10 positioned on the outdoor side of the mounting hole 30, the fitting portion 13 fitted in the mounting hole 30, and the mounting hole 30. On the other hand, the outer cylinder 2 includes a screwed portion 23 that is screwed from the indoor end 14 of the inner cylinder 1 and an eyepiece end 24 that faces the indoor side. In addition, a hook portion 60 that can be attached between the outdoor flange portion 10 and the attachment hole 30 and between the attachment hole 40 and the eyepiece end portion 25 is provided.

The hook portion 60 is formed by extending a part of a first idling ring (see FIG. 23), which will be described later, into a hook shape, and includes a first idling ring 6a and a hook piece 60a.
As a method of forming the hook portion 60, there are a method of integrally forming with the ring 6a by pressing, a method of welding the hook piece 60a and the ring 6a, and the like.

The hook portion 60 has an outer periphery of a second idling ring (details will be described later) 7a disposed between the outdoor flange portion 10 and the mounting hole 30 so as to be idling with the fitting portion 13 as an axis. It is attached so that it can idle.
On the other hand, in the hook portion 60, the first idling ring 6 a is inserted into the screwed portion 23 between the mounting hole 40 and the eyepiece end portion 24, and between the door plate 4 and the eyepiece end portion 25. It is attached to be crimped.
Therefore, the hook portion 60 is attached between the outer flange portion 10 and the attachment hole 30 or between the attachment hole 40 and the eyepiece end portion 25 or between both. . A reference numeral “1f” denotes a lens cover, and this lens cover is attached between the first idling ring 6 a of the hook portion 60 and the eyepiece end portion 24.

According to the security lens A, the outdoor flange portion 10 does not rotate in synchronism, even if the first idle ring 6a is gripped with a jig such as a spanner, and the outdoor flange portion 10 does not rotate in synchronism. It is extremely difficult to grip 10 itself, and is a countermeasure against rotation.
Further, a nameplate, a memo, and seasonal ornaments such as a Christmas wreath and a New Year decoration can be attached to the hook portion 60 on the outdoor side.
On the other hand, the hook part 60 on the indoor side can be attached by hanging ornaments such as imitation flowers, memos, writing utensils, seals and the like.

Note that the first idling ring 6 a and the second idling ring 7 a may be integrated and attached to the fitting portion 13.
In this case, as described later, “the thickness of the second idling ring 7 is slightly thicker than that of the first idling ring 6”, but the first idling ring 6a and the second idling ring 6 In the case of the hook portion 60 formed integrally with the idling ring 7a, the thickness thereof may be uniform.
In addition, by arranging the hook portion 60 and the second idling ring 7a for idling the hook portion 60 on the existing security lens, it is possible to add a function such as anti-rotation to the security lens already installed on the door. .
Although the security lens A is for a double door, the above configuration may be used for a single door security lens (see FIG. 21).

(Second embodiment Anti-rotation measures + attached functions)
As shown in FIGS. 3 and 4, instead of the second idling ring 7 a, the hook portion 60 is attached so as to be idling via an idling ring portion 131 b formed in the fitting portion 13. The lens B may be used.
Although details of the idling ring portion will be described later, the outer peripheral surface thereof is formed in a disk shape with a size that allows the first idling ring 6a of the hook portion 60 to idle.
Other configurations are the same as those of the above-described embodiment, and have the same effects.

(Third embodiment Anti-rotation measures + attached functions)
Instead of the hook portion 60, as shown in FIGS. 5 and 6, a security lens C including a hook portion 61 with a plate portion 62 may be used.
The hook portion 61 is obtained by further extending the hook piece 60a of the first idling ring 6a to form a hook piece 61a and attaching a plate portion 62 to the hook piece 61a.
The plate portion 62 may be integrally formed by pressing together with the hook piece 61a, or the plate portion 62 may be welded to the hook piece 61a.
Other configurations are the same as those of the above-described embodiment, and detailed description thereof is omitted.

  According to the security lens C, the same effect as the above embodiment can be obtained, and the outdoor plate portion 62 can be used as a nameplate, and a memo or the like can be attached to the indoor and outdoor plate portion 62.

(4th embodiment Anti-rotation measures + attached functions)
Instead of the second idling ring 7a, as shown in FIG. 7, the security lens D may be configured such that the hook portion 61 can be idly attached via the idling ring portion 131b of the fitting portion 13. .
Other configurations are the same as those of the above-described embodiment, and have the same effects.

(Fifth embodiment Anti-rotation measures + attached functions)
Instead of the hook portion 60, as shown in FIGS. 8 and 9, a security lens E to which a plate portion 65 is attached may be used.
The plate portion 65 may be integrally formed by pressing together with the first idling ring 6a, or a plate plate may be welded to the ring 6a.
Since other configurations are the same as those of the first embodiment and the like, detailed description thereof is omitted.
According to the security lens E, the same effects as those of the above-described security lenses can be obtained, and a nameplate, a memo or the like can be attached to the plate portion 65 indoors or outdoors, or engraving can be performed.

(Sixth embodiment Anti-rotation measures + attached functions)
Instead of the second idling ring 7a, as shown in FIG. 10, it may be a security lens F in which the plate portion 65 is mounted so as to be idling via an idling ring portion 131b of the fitting portion 13. .
Other configurations are the same as those of the above-described embodiment, and have the same effects.

Each function can be added to each of the security lenses A to F as follows.
(Anti-fogging function)
First, the anti-fogging function will be described.
As shown in FIGS. 11 and 12, the antifogging function communicates with the space 16 defined by the lens 121 and the lens 122 of the lens system (lenses 120, 121, 122, and 123) disposed in the inner cylinder 1. A hole 17 to be formed, a sealing portion 17A for sealing the hole 17, and a gas body 19 for anti-fogging to be sealed in the space 16.
Hereinafter, the lenses 120 and 121 are also referred to as an “objective lens”, the lens 122 as an “eyepiece lens”, and the lens 123 as a “wide-angle lens”.

In the security lens G according to this embodiment, it is necessary that the tip of the sealing portion 17A that seals the gas body 19 does not disturb the field of view from the indoor side end (eyepiece end 24) 10A to the outdoor side. was there.
In this case, it is desirable to provide a hole in the fitting portion 13 that is thicker than the thin male screw portion 10B, and screw a screw as a sealing portion into the hole. If a hole is provided in the male screw portion 10B and this hole is sealed with a screw, the tip of the screw may enter the field of view.
Usually, the fitting portion has a width that allows the lenses 120 and 121 to be set inside thereof, and protrudes from the mounting hole 30 to the indoor side, but in this embodiment, the fitting portion further extends to the indoor side, In order to prevent the lenses 120 and 121 and the hole 17 from interfering with each other, a space for providing the hole 17 is secured and the fitting portion 13 is formed.

  The space 16 is hermetically sealed by the lens 121 and the lens 122, and it is effective for preventing the fogging of the lens 121 and the lens 122 to make the space 16 an atmosphere with low humidity.

  The hole 17 has a diameter that allows the gas body 19 to be injected after a vacuum is drawn from the space 16, and has a thread that can screw the sealing portion 17A.

  The sealing portion 17A is typically constituted by a screw, and for example, a so-called “imine screw” may be used.

The gas body 19 may be any material as long as the space 16 can be formed in a low humidity atmosphere. In this embodiment, “dry chist” (trade name) is used. Nitrogen, dry air, etc. may be used.
Further, the gas body 19 only needs to be enclosed in the space 16 at a pressure of approximately 1 atm or higher.

  According to the security lens G configured as described above, the gas body 19 exhibits the anti-fogging effect of the lens 121 and the lens 122 in the space 16, and is installed in a place where the temperature difference between the outdoor and the indoor is large. It is a crime prevention lens that is easy to occur in a lens and prevents fogging of a lens that is likely to occur in cold regions, etc., and conforms to a specification mode under new environmental conditions.

Note that a portion where the outdoor flange portion 10 and the cap 18 are in contact, for example, a screwed portion or / and a portion where the cap 18 and the lens 123 are in contact may be sealed to improve waterproofness.
Further, by using an adhesive instead of the sealing agent for the sealing portion, the waterproofness can be enhanced, and the adhesion between the outdoor flange portion 10 and the cap 18 or the adhesion between the cap 18 and the lens 123 can be strengthened.
By increasing the waterproofing property of the security lens G in this manner, the clouding of the space 16A of the lens 123 can be prevented, and the lens 16 or the lens 120 or 121 can enter the space 16 from the periphery. Can block moisture that may come.

  In the first embodiment, the wide-angle lens 123 is attached. However, the above-described configuration may be used for a security lens that omits the wide-angle lens 123 and a security lens that omits the cap 18, and for a single door. You may use the said structure for the crime prevention lens (refer FIG. 21).

Further, for each of the security lenses, a sleeve 15 (see FIG. 17) may be disposed between the lens 122 and the lens 121. In this configuration, it is necessary to form a hole similar to the hole 17 in the sleeve 15.
Moreover, although the said hole 17 was provided in the said fitting part 13, as long as the member used for the sealing part 17A does not enter into the visual field from the said indoor side edge part 10A, you may provide in the said external thread part 10B. For example, when the sleeve 15 is disposed, since the thickness of the sleeve 15 is added to the thickness of the male screw portion 10B, the hole 17 can be provided in the male screw portion 10B.
By making the other configurations similar to those of the above embodiments, substantially the same operational effects can be obtained.

(Measures against salt damage)
FIG. 13 is a cross-sectional view of one half of the longitudinal center of the security lens with countermeasures against salt damage, and FIG. 14 is an exploded perspective view of the security lens.
The security lens H is obtained by omitting the hole 17, the sealing portion 17 </ b> A, and the gas body 19 of the security lens G and applying a coating 180 to the cap 18.

The paint for the coating 180 may be any material that can form a coating film on the material of the cap 18, for example, brass.
The color of the coating film may be any color and can be matched to the color of the door.

In this embodiment, a coating film is formed on the cap 18, but a coating film may be formed on the entire outer surface of the inner cylinder 1, and further a coating film may be formed on the entire outer surface of the outer cylinder 2. Good.
Similarly, in the case of a security lens with a cap from which the wide-angle lens 123 is omitted, a coating film having only a cap may be used. In the case of a security lens without a cap, only the outdoor flange portion may be used. Further, in each of the security lenses, a coating film may be formed on the entire outer surface of the inner cylinder and on the entire outer surface of the outer cylinder.

According to the security lens H configured as described above, the coating film 180 can avoid adhesion of salt to the portion exposed to the outdoor side, that is, the base portion of the cap 18, etc. It is a security lens that matches the specifications in new environmental conditions.
Moreover, the color of the coating film can be matched with the color of the door, and novelty can be given to the security lens.
By making the other configurations similar to those of the above embodiments, substantially the same operational effects can be obtained.

(Waterproof)
FIG. 15 is a cross-sectional view of a longitudinal center of a security lens related to waterproofing, and FIG. 16 is an exploded perspective view of the security lens.
In the security lens I, the coating film 180 of the security lens H is omitted, and a waterproof ring 100 is disposed between the outdoor flange portion 10 and the door plate 3.

The waterproof ring 100 is a ring shape attached so as to straddle the fitting portion 13, and an inner diameter thereof is substantially equal to a diameter of the fitting portion 13, and an outer diameter thereof has a width of about several mm on the inner diameter. What is necessary is just to add, and the largest outer diameter should just be substantially equal to the outer diameter of the said outdoor side flange 10. FIG.
The material of the waterproof ring 100 is rubber which is an elastic material, but is not limited thereto.

According to the security lens I having the above-described configuration, it is possible to prevent rainwater and the like entering the door from the mounting hole 30 of the door 3 and prevent the door from being damaged.
Further, since the waterproof ring 100 is pressure-bonded between the outdoor flange 10 and the door plate 3, the inner cylinder 1 is difficult to turn from the outdoor side due to the frictional force of the waterproof ring 100.
By making the other configurations similar to those of the above embodiments, substantially the same operational effects can be obtained.

(Anti-rotation measures)
FIG. 17 is a cross-sectional view of one side of the longitudinal center of the inner cylinder 1 of the security lens related to anti-rotation measures.
The security lens J omits the wide-angle lens 123, the cap 18 and the waterproof ring 100 of the security lens C, has an outdoor flange portion 10 having a thickness of about 1 mm to about 1.5 mm, and an incident surface. An objective lens 120 disposed substantially flush with the surface 101 of the outdoor flange portion 10 is provided.

If the thickness W of the outdoor flange portion 10 is about 1 millimeter mail to about 1.5 millimeter mail, it is difficult to transmit the force to turn this, and the inner cylinder 1 itself is difficult to remove.
Moreover, since the outdoor flange part 10 exposed to the outdoor side is thin, it is suitable for salt damage countermeasures.
Furthermore, since the entrance surface of the objective lens 120 is closer to the door 3, the field of view from the indoor side end 10A is expanded.
By making the other configurations similar to those of the above embodiments, substantially the same operational effects can be obtained.

(Back cover measures)
FIG. 18 is an exploded perspective view of a security lens related to the back cover countermeasure.
The security lens K omits the waterproof ring 100 and is attached via an attachment frame 2a attached to the indoor side end 10A of the outer cylinder 2 and a screw member 2b screwed to the attachment frame. And a drawable cover 1a.
The mounting frame 2a is formed by processing an elastically deformable material, for example, a steel material into a ribbon shape, and forming both ends of the free ends thereof facing up to form screw holes for the screw material 2b.

The cover 1a has a hook 1c formed on the top thereof, and the hook 1c is engaged with the screw 2b. Then, by tightening the screw member 2b, the mounting frame 2a is fixed at or near the indoor side end 10A, and the cover 1a is supported by the screw member 2b so as to be able to be pulled (turned). A tongue 10a for rotating operation is formed.
By making the other configurations similar to those of the above embodiments, substantially the same operational effects can be obtained.

The crime prevention lens K having the above-described configuration has a crime prevention effect because it cannot see the state of the room from the outside of the room, and the cover 1a can prevent the indoor temperature from directly acting on the lens 122. In this respect, the anti-fogging effect of the security lens can be exhibited.
Furthermore, it can be easily retrofitted to a security lens already installed on the door.

(Anti-fogging measure + Waterproof measure)
Next, based on FIG.19 and FIG.20, the structural example of the crime prevention lens L which combined the antifogging countermeasure and the waterproofing countermeasure is demonstrated.
This embodiment is characterized in that an elastic sealing material 5A is disposed in the recess 12 of the outdoor flange portion 10 and an elastic sealing material 5B is also disposed between the cap 18 and the wide-angle lens 123.

  As the elastic sealing material 5A, a ring-shaped rubber 5A is used. The ring-shaped rubber 5A includes an outer edge 5a fitted into the inner peripheral edge 12a of the concave portion 12 of the outdoor flange portion 10, and the inner cylinder 1. A hole 50 corresponding to the tube opening 11 is provided and colored black.

  A substantially O-ring-shaped rubber 5B is used as the elastic sealing material 5B, and this O-ring-shaped rubber 5B is disposed on the back side of the opening edge 18a of the gap 18 with which the outer edge 123a of the wide-angle lens 123 abuts. Is done.

  The rubbers 5A and 5B are thin film natural rubber or synthetic rubber, but any material may be used as long as it is a sealing material having elasticity.

According to the rubbers 5A and 5B, due to the elastic deformation, the rubber 5A and 5B are pressure-bonded between the exit surface 123b of the wide-angle lens 123 and the recess 12, and a double watertight function is exhibited together with the rubber 5B.
Accordingly, rainwater or the like that enters the concave portion 12 is blocked, and clouding of the space 16A of the lens 123 can be prevented, and also enters the space 16 from the periphery of the lens 123 or the periphery of the lens 120 and the lens 121. Can block moisture that may come in.
In addition, the rubber 5A and 5B can be removed by the intrusion of rainwater or the like, which can save the trouble of polishing and matting (inking) on the exit surface side of the wide-angle lens 123 as in the prior art. There is an effect that there is no fading.
By making the other configurations similar to those of the above embodiments, substantially the same operational effects can be obtained.

(Back cover measures)
Next, based on FIG. 21, the structural example of the security lens M which concerns on a back cover countermeasure is demonstrated.
The security lens M is formed by forming a cover attachment portion 2d in a substantially hat shape with a synthetic resin, providing a cylindrical through hole, and attaching a screw 3d for rotatably supporting the cover 1d to the edge thereof.
In order to attach the cover attaching portion 2d, the cover attaching portion 2d may be pushed in from the indoor side end (eyepiece end 24) 10A of the outer cylinder 2.
This security lens M is for a single door, and can be stably attached even if the pushing width W from the indoor side end is small.
By making the other configurations similar to those of the above embodiments, substantially the same operational effects can be obtained.

The security lens M having the above-described configuration has a crime prevention effect because the inside of the room cannot be seen from the outside, and the cover 1a can prevent the indoor temperature from directly acting on the lens 122. In this respect, the anti-fogging effect of the security lens can be exhibited.
By making the other configurations similar to those of the above embodiments, substantially the same operational effects can be obtained.

In addition, a fluorescent paint containing a fluorescent pigment (fluorescent substance) may be applied to the indoor side surface of each of the covers 1a and the like.
The fluorescent paint is known to act so that light having the same phase as the reflected light is added and the light is amplified, and the luminance is increased.
Therefore, it is easy to visually recognize the position of the cover 1a and the like, and it is possible to provide a security lens that can easily grasp the position of the viewing window 11A of the indoor side end portion 10A.
If a fluorescent pigment (fluorescent substance) is used, it is not limited to a fluorescent paint, and a fluorescent tape may be applied to the surface of the cover 1a.
The application range of the fluorescent paint and the application range of the fluorescent tape are arbitrary, and may be, for example, the center of the surface of the cover 1a or the outer edge of the surface. Further, a fluorescent paint or the like may be applied to the entire inner surface of the inner cylinder 1.
Moreover, you may attach a mirror to indoor side surfaces, such as said each cover 1a.
The resident can visually recognize the location of the cover and the position of the security lens by the light from the mirror on the indoor side of the cover without turning on the lights of the entrance.
Therefore, the visitor cannot sense the movement of the resident on the indoor side and the state of the room through the security lens, which is safe for the resident and the crime prevention effect is further enhanced.

Further, a phosphorescent paint containing a phosphorescent pigment may be applied to the indoor side surface of the cover 1a instead of the fluorescent paint.
The phosphorescent paint stores sunlight or artificial lighting light energy, and emits light for a certain period of time even in the dark.
Therefore, it can be expected to function in substantially the same manner as the fluorescent paint, and it is easy to visually recognize the position of the cover 1a, and it is possible to provide a security lens that can easily grasp the position of the viewing window 11A of the indoor side end portion 10A.
As long as a phosphorescent pigment (phosphorescent substance) is used, it is not limited to a phosphorescent paint, and a phosphorescent tape may be applied to the surface of the cover 1a.

(Anti-rotation measures)
Next, based on FIG.22 and FIG.23, the structural example of the security lens N which concerns on a countermeasure against rotation is demonstrated.
The security lens N omits the wide-angle lens 123 of the security lens C, the cap 18 and the waterproof ring 100, and also includes the first idle ring 6 and the first idle ring between the outdoor flange portion 10 and the door plate 3. A second idling ring 7 for idling the ring 6 is arranged.
The first idling ring 6 is sized such that its inner diameter slides on the outer circumferential surface of the outer diameter of the second idling ring 7, and its outer diameter is the end of the outer circumferential surface of the outdoor flange portion 10. The end portion 10a is stably placed by chamfering formed on the first idling ring 6 so that a tapered surface continuous from the portion 10a can be formed.
The second idling ring 7 is attached to the fitting portion 13 across the fitting portion 13 of the inner cylinder 1 and has an inner diameter that can be attached to the fitting portion 13. The outer flange portion 10 is formed in a size smaller than the end portion 10a.
The thickness of the second idling ring 7 is slightly thicker than that of the first idling ring 6, and the first idling ring 6 and the door plate 3 are arranged between the outdoor flange 10 and the door plate 3. When the second idling ring 7 is arranged, the first idling ring 6 can idle even if the idling ring 7 is crimped by the door plate 3 and the outdoor flange portion 10.
In FIGS. 22 and 23, reference numeral “130” denotes a notch constituting the rotation stop mechanism of the inner cylinder 1.
According to the security lens N, even when the first idling ring 6 is grasped with a jig such as a spanner and rotated, only the first idling ring 6 rotates idly, and the outdoor flange portion 10 rotates in synchronism. There is no anti-rotation measure.
By making the other configurations similar to those of the above embodiments, substantially the same operational effects can be obtained.

(Anti-rotation measures)
Next, based on FIG.24 and FIG.25, the structural example of the crime prevention lens O which concerns on a countermeasure against rotation is demonstrated.
In this embodiment, the wide-angle lens 123, the cap 18 and the waterproof ring 100 are omitted, and the idle ring 6 is disposed between the outdoor flange portion 10 and the door 3, while the idle ring 6 is idled. An idle ring portion 131 to be operated is formed in the fitting portion 13.
The idling ring 6 is formed such that its inner diameter is capable of idling around the outer peripheral surface of the idling ring portion 131. Other configurations are the same as those of the first idling ring 6 of the security lens J.
The idling ring portion 131 is formed in a columnar step at a portion where the fitting portion 13 contacts the outdoor flange portion 10, and the diameter thereof is smaller than the end portion 10 a of the outdoor flange portion 10. It is formed in size.
Similar to the second idle ring 7, the idle ring portion 131 is formed slightly thicker than the idle ring 6, and the idle ring portion 131 idles between the outdoor flange portion 10 and the door plate 3. When the ring 6 is disposed, the idling ring 6 can be idled.
According to the security lens O, since the number of parts is smaller than that of the security lens N, it is easy to attach the security lens K to the door.
By making the other configurations similar to those of the above embodiments, substantially the same operational effects can be obtained.

Any combination of the above-described anti-fogging measures, salt damage measures, waterproof measures, anti-rotation measures, and back cover measures is optional, and can be selected and combined according to the installation environment of the security lens.
For example, the elastic sealing material 5 </ b> A may be disposed in the concave portion 12 of the outdoor flange portion 10 of the security lens H and the elastic sealing material 5 </ b> B may be disposed between the cap 18 and the wide-angle lens 123. Further, a waterproof ring 100 may be disposed between the outdoor flange portion 10 and the door plate 3. With such a configuration, a waterproof measure can be added to the salt damage countermeasure.
Also, for example, the antifogging measures, salt damage measures, waterproof measures, anti-rotation measures, and back cover measures may be combined, or the salt damage measures, waterproof measures, anti-rotation measures, and back cover measures may be combined. Each configuration of countermeasure, anti-rotation and back cover, each configuration of anti-rotation and back cover, anti-fogging, waterproof, anti-rotation and back cover may be combined.
In addition to the security lens A to which the wide-angle lens 123 is attached as described above, each configuration of the above countermeasures includes a security lens that omits this lens, a security lens that omits the cap 18, and a single door. It may be used for crime prevention lenses (for public corporations).

The longitudinal center single side sectional view of the security lens according to the first embodiment, An exploded perspective view of the security lens, Longitudinal central cross-sectional view of the security lens according to the second embodiment, An exploded perspective view of the security lens, Longitudinal central cross-sectional view of a security lens according to a third embodiment, An exploded perspective view of the security lens, An exploded perspective view of a security lens according to a fourth embodiment, Longitudinal center cross-sectional view of a security lens according to a fifth embodiment, An exploded perspective view of the security lens, An exploded perspective view of a security lens according to a sixth embodiment, Cross-sectional view of one side of the vertical center of another security lens, The same exploded perspective view, Cross-sectional view of one side of the vertical center of another security lens, The same exploded perspective view, Cross-sectional view of one side of the vertical center of another security lens, The same exploded perspective view, Longitudinal central cross-sectional view of the inner cylinder of another example of a security lens, An exploded perspective view of another example of a security lens, Cross-sectional view of one side of the vertical center of another security lens, An exploded perspective view of the security lens, An exploded perspective view of another example of a security lens, Cross-sectional view of one side of the vertical center of another security lens, An exploded perspective view of the security lens, Cross-sectional view of one side of the vertical center of another security lens, It is a disassembled perspective view of the same security lens.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inner cylinder 1a 1d 1f Cover 2 Outer cylinder 2a Mounting frame 23 Screwed part 24 Eyepiece edge part

3a 3d 3e Pin 10a 10d Tongue portion 10 Outer side flange portion 10A Indoor side end portion 11 Cylinder port 12 Recessed portion 12a Inner peripheral edge 13 of recessed portion 13 Fitting portion 14 Indoor side end portion 15 Sleeve 16 Space 17 Hole 17A Sealing portion 18 Cap 19 Gas Body 100a Inner circumference 3 Outdoor door plate 30 Mounting hole 4 Indoor door plate 40 Mounting hole 5A Rubber 5B Rubber 50 Hole 100 Waterproof ring 101 Surface 123 Wide angle lens 180 Paint (Coating)
6 6a 1st idling ring 7 7a 2nd idling ring 130 Notch 131 idling ring part 60 61 hook part 62 65 plate part

Claims (3)

It consists of a first cylindrical body and a second cylindrical body that are attached through an attachment hole provided in the door,
The first cylindrical body has an outdoor flange portion positioned on the outdoor side of the mounting hole,
A fitting portion fitted into the attachment hole, an indoor side end located on the indoor side of the attachment hole, and a lens system ,
On the other hand, the second cylindrical body includes a screwed portion to be screwed from an indoor side end portion of the first cylindrical body, and an eyepiece end portion facing the indoor side,
A hook portion, a hook portion with a plate portion or a plate portion that can be attached between the outdoor flange portion and the attachment hole and between the attachment hole and the eyepiece end portion,
For the recess formed in the outdoor flange portion and the tube opening of the first tubular body provided in the recess, the outer edge is fitted into the inner peripheral edge of the recess, and includes a hole corresponding to the tube opening, A security lens characterized in that an elastic sealing material colored in black is pressure-bonded between the exit surface of the lens disposed in the recess and the recess . The hook portion, the hook portion with the plate portion or the plate portion is attached so as to be able to idle by way of an idle ring arranged so as to be idle with the fitting portion as an axis between the outdoor flange portion and the mounting hole. It is security lens according to claim 1, characterized in that is. The hook part, the hook part with a plate part or the plate part is mounted so as to be capable of idling via an idling ring part formed in the fitting part between the outdoor flange part and the mounting hole. The security lens according to claim 1.

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