CN212909795U - Monitoring device - Google Patents

Abstract

The utility model relates to a monitoring device, include: preceding shell, lens module and light blocking circle. The front shell is provided with a window; the lens is fixed at the window; the lens module is arranged in the front shell; the light blocking ring comprises a first part sleeved outside the lens module and a second part connected with one end of the first part, and the second part gradually expands outwards from one end connected with the first part to the other end; the first part is hermetically connected with the lens module, and the second part is hermetically connected with the lens, so that the front end of the lens module, the light blocking ring and the lens are enclosed to form a closed space. The monitoring equipment solves the problem of lens fogging and ensures the clarity of a camera shooting picture; and the influence on the field angle of the lens module is avoided as much as possible, and the performance and the quality of the monitoring equipment are ensured.

Description

Monitoring device

Technical Field

The utility model relates to a video monitoring technical field especially relates to a supervisory equipment.

Background

Monitoring has been related to aspects of our lives. The monitoring equipment, such as a camera, is provided with a glass or PC lens at a window in front of the lens. Because the lens requires higher transmissivity, the lens is usually designed to be thin and transparent, when the transparent thin lens faces some severe cooling weather, the humidity of the air in the equipment can reach saturation, and because the temperature at the lens is lower, saturated water vapor can be separated out on the lens to form water mist or condensation, so that the monitoring picture is fuzzy, and the monitoring is invalid.

In order to overcome the defect, the related art discloses an anti-fog device for monitoring equipment, which comprises a front shell fixedly connected with a lens fixing frame, front shell glass embedded in an opening in the center of the front shell and a sealing sleeve sleeved at the front end of a lens. The front shell glass, the front shell, the sealing sleeve and the front end of the lens are enclosed to form a closed space, exchange with air inside the equipment is isolated, the possibility of fogging of the inner surface of the front end glass of the lens is greatly reduced, the problem of fogging of the inner surface of the glass lens of the monitoring equipment is effectively solved, and the clear image is guaranteed.

However, in the monitoring device, the sealing sleeve is cylindrical, and the front end of the lens is fixed on the front shell by pressing the sealing sleeve to form a seal, so that the angle of view of the lens is partially blocked, the monitoring area is reduced, and the performance and quality of the monitoring device are affected.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for a monitoring device that can prevent fogging of the lens and minimize the effect on the field angle of the lens module.

The utility model provides a monitoring device, include:

a front shell provided with a window;

the lens is fixed at the window;

the lens module is arranged in the front shell; and

the stop ring comprises a first part sleeved outside the lens module and a second part connected with one end of the first part, and the second part gradually expands outwards from one end connected with the first part to the other end;

the first part is connected with the lens module in a sealing mode, and the second part is connected with the lens in a sealing mode, so that a closed space is formed by the front end of the lens module, the light blocking ring and the lens in an enclosing mode.

In one embodiment, the front end of the lens module is located at the joint of the first part and the second part, or the front end of the lens module extends into the second part.

In one embodiment, the outward expansion angle of the second portion is greater than or equal to the field angle of the lens module.

In one embodiment, the second portion is provided in a tapered cylindrical shape.

In one embodiment, an end of the second portion remote from the first portion is fixed to the lens by a dispensing seal.

In one embodiment, a sealant groove is formed at one end of the second part connected with the lens for accommodating sealant.

In one embodiment, the first portion is configured as a cylinder.

In one embodiment, the stop ring is made of metal or plastic material.

In one embodiment, the monitoring device further includes a first sealing ring disposed between the lens module and the first portion, a mounting groove is disposed on an outer side of the lens module, and the first sealing ring is mounted in the mounting groove.

In one embodiment, the monitoring device further comprises a rear shell, a cavity is arranged in the rear shell, an opening communicated with the cavity is arranged at the front end of the rear shell, and the front shell is connected to the opening in a sealing manner;

the monitoring equipment further comprises a core module, the core module is installed in the cavity, and the lens module is connected to the front end of the core module.

The utility model provides a supervisory equipment because the setting of light blocking circle forms airtight space between the front end of camera lens module and the lens, and the inside steam of supervisory equipment can not enter into airtight space to can not condense on the lens. In addition, because the distance between the lens module and the lens is small, a closed space formed between the front end of the lens module and the lens is a small space, the moisture content in the closed space is extremely small, and even if the temperature is sharply reduced, water mist cannot be formed on the lens. Therefore, the monitoring equipment has the advantages that the light blocking ring is arranged, the first part of the light blocking ring is connected with the lens module in a sealing mode, the second part of the light blocking ring is connected with the lens in a sealing mode, so that the front end of the lens module, the light blocking ring and the lens are enclosed to form an airtight space, the possibility of fogging on the inner surface of the lens is greatly reduced, the problem of fogging on the inner surface of the lens of the monitoring equipment is effectively solved, and the definition of a camera shooting picture is guaranteed. Because the light blocking ring comprises a first part sleeved outside the lens module and a second part connected with one end of the first part, the second part gradually expands outwards from one end connected with the first part to the other end. Therefore, the light blocking ring can be prevented from blocking the field angle of the lens module as much as possible; and the second part is connected with the lens in a sealing way, namely the front shell is positioned at the outer side of the second part of the light blocking ring, so that the front shell can not block the angle of view of the lens module under the condition that the light blocking ring does not block the angle of view of the lens module, thereby ensuring the visible range of the lens module. Therefore, the monitoring equipment solves the problem of lens fogging and ensures the clarity of a camera shooting picture; and the influence on the field angle of the lens module is avoided as much as possible, and the performance and the quality of the monitoring equipment are ensured.

Drawings

Fig. 1 is a cross-sectional view of a monitoring device according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a perspective view of an iris diaphragm according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of the light blocking ring shown in fig. 3.

Reference numerals: 10. a front housing; 101. a window; 20. a lens; 201. sealing the space; 30. an aperture stop; 31. a first portion; 32. a second portion; 321. dispensing a glue groove; 40. a lens module; 401. mounting grooves; 41. mounting a bracket; 50. a movement module; 60. a rear housing; 601. a cavity; 70. a first seal ring; 80. and a second seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, the present invention provides a monitoring device, which is a bolt, however, the present invention is not limited thereto, and the monitoring device may be other types of cameras.

The monitoring device includes: the lens module comprises a front shell 10, a rear shell 60, a movement module 50, a lens module 40 and a lens 20. Wherein, a cavity 601 is arranged in the rear shell 60, an opening communicated with the cavity 601 is arranged at the front end of the rear shell 60, and the front shell 10 is hermetically connected to the opening. In this manner, the front case 10 and the rear case 60 cooperate to form a housing portion of the monitoring apparatus, thereby functioning to protect elements mounted in the front case 10 and the rear case 60.

Be equipped with second sealing washer 80 between preceding shell 10 and the backshell 60, through second sealing washer 80 realize preceding shell 10 and the sealing connection between the backshell 60, prevent the inside water of supervisory equipment. Further, a desiccant may be disposed within the cavity 601 to absorb moisture from the air within the cavity 601 and reduce the moisture content within the cavity 601.

The movement module 50 is installed in the cavity 601 of the rear case 60, the lens module 40 is installed in the front case 10, and the lens module 40 is connected to the front end of the movement module 50. Specifically, the lens module 40 can be connected to the front end of the core module 50 through the mounting bracket 41, one end of the mounting bracket 41 can be connected to the core module 50 through a screw, and the other end is connected to the rear end of the lens module 40 through a screw, so that the lens module 40 can be conveniently and stably connected to the core module 50.

The front shell 10 is provided with a window 101, the lens 20 is fixed at the window 101, and the lens 20 is disposed to protect the lens module 40 and prevent the lens module 40 from being contaminated or damaged. The lens 20 can be made of glass or PC plastic, and can meet the requirement of high transmittance.

The monitoring device further comprises a light blocking ring 30, and the light blocking ring 30 is arranged between the lens module 40 and the lens 20. Specifically, the light blocking ring 30 includes a first portion 31 sleeved outside the lens module 40 and a second portion 32 connected to one end of the first portion 31, and the second portion 32 gradually expands outward from the end connected to the first portion 31 to the other end. Further, the first portion 31 is hermetically connected to the lens module 40, and the second portion 32 is hermetically connected to the lens 20, so that the front end of the lens module 40, the light-blocking ring 30 and the lens 20 enclose a sealed space 201.

Due to the arrangement of the light blocking ring 30, a closed space 201 is formed between the front end of the lens module 40 and the lens 20, and therefore, no matter whether the water vapor inside the monitoring device (i.e., the water vapor in the cavity 601) is saturated or not, the water vapor cannot enter the closed space 201 between the front end of the lens module 40 and the lens 20, and therefore the water vapor cannot condense on the lens 20. Further, since the distance between the lens module 40 and the lens 20 is small, the sealed space 201 formed between the front end of the lens module 40 and the lens 20 is a small space, and the moisture content therein is extremely small, so that even if the temperature is rapidly lowered, water mist is not formed on the lens 20. Therefore, the monitoring equipment is provided with the light blocking ring 30, the first part 31 of the light blocking ring 30 is connected with the lens module 40 in a sealing mode, and the second part 32 of the light blocking ring 30 is connected with the lens 20 in a sealing mode, so that the front end of the lens module 40, the light blocking ring 30 and the lens 20 are enclosed to form the closed space 201, the possibility of inner surface fogging of the lens 20 is greatly reduced, the problem of inner surface fogging of the lens 20 of the monitoring equipment is effectively solved, and the clarity of a camera shooting picture is guaranteed.

Since the stop ring 30 includes a first portion 31 sleeved outside the lens module 40 and a second portion 32 connected to one end of the first portion 31, the second portion 32 gradually expands outward from the end connected to the first portion 31 to the other end. Thus, the stop ring 30 can be prevented from blocking the angle of view of the lens module 40 as much as possible; moreover, the second portion 32 is hermetically connected to the lens 20, that is, the front shell 10 is located outside the second portion 32 of the light blocking ring 30, so that the front shell 10 does not block the field angle of the lens module 40 under the condition that the light blocking ring 30 does not block the field angle of the lens module 40, thereby ensuring the visible range of the lens module 40. Therefore, the monitoring equipment not only solves the problem of fogging of the lens 20, but also ensures the clarity of the image; and the influence on the field angle of the lens module 40 is avoided as much as possible, and the performance and the quality of the monitoring equipment are ensured.

Referring to fig. 2, the front end of the lens module 40 is located at the connection position of the first portion 31 and the second portion 32, or the front end of the lens module 40 extends into the second portion 32. Thus, the first portion 31 can be prevented from blocking the front end of the lens module 40, and the first portion 31 can be prevented from affecting the field angle of the lens module 40.

In an embodiment, the outward expansion angle of the second portion 32 is greater than or equal to the field angle of the lens module 40, so that the second portion 32 can be prevented from blocking the field angle of the lens module 40, thereby ensuring the visible range of the lens module 40 and ensuring the monitoring performance and quality of the monitoring device.

Further, the second portion 32 is formed in a tapered cylindrical shape, which can avoid blocking the angle of view of the lens module 40, and has a simple structure and easy processing.

In one embodiment, the end of second portion 32 distal to first portion 31 is secured to lens 20 by a dispensing seal. Through the sealed second part 32 and the lens 20 of some glue, sealing performance is good, and second part 32 and lens 20 junction firm in connection, the condition that lens 20 drops is difficult for appearing, can have longer life.

Further, referring to fig. 3 and 4, a sealant groove 321 is formed at one end of the second portion 32 connected to the lens 20 for accommodating the sealant. During installation, the sealant can be dripped into the sealant dripping groove 321, the lens 20 is placed at one end of the second portion 32, and the second portion 32 and the lens 20 are connected by the sealant. Wherein, the sealant can adopt UV glue, and has good sealing effect. This embodiment provides the space for sealed glue through setting up some gluey grooves 321, and the sealed glue of being convenient for evenly sets up in second portion 32 to be favorable to forming good sealed between second portion 32 and lens 20. In this embodiment, the dispensing slot 321 is an annular groove, which is simple in structure and is beneficial to setting a sealant.

In an embodiment, the light blocking ring 30 is made of metal, but not limited thereto, and in other embodiments, the light blocking ring 30 may also be made of plastic material.

In one embodiment, the first portion 31 is cylindrical, and has a simple structure, so that the lens module 40 can be conveniently mounted.

Further, referring to fig. 2, the monitoring apparatus further includes a first sealing ring 70 disposed between the lens module 40 and the first portion 31, a mounting groove 401 is disposed on an outer side of the lens module 40, and the first sealing ring 70 is mounted in the mounting groove 401. The first sealing ring 70 is provided to ensure that a good seal is formed between the first portion 31 and the lens module 40, and prevent water vapor in the cavity 601 of the rear housing 60 from entering the sealed space 201 defined by the front end of the lens module 40, the light blocking ring 30 and the lens 20. In one embodiment, the first sealing ring 70 is an O-ring, which has good sealing effect and is cheap.

The utility model provides a monitoring equipment, owing to the setting of light blocking ring 30, form airtight space 201 between the front end of camera lens module 40 and the lens 20, the inside steam of monitoring equipment can not enter into airtight space 201 to can not condense on lens 20. Further, since the distance between the lens module 40 and the lens 20 is small, the sealed space 201 formed between the front end of the lens module 40 and the lens 20 is a small space, and the moisture content therein is extremely small, so that even if the temperature is rapidly lowered, water mist is not formed on the lens 20. Therefore, the monitoring equipment is provided with the light blocking ring 30, the first part 31 of the light blocking ring 30 is connected with the lens module 40 in a sealing mode, and the second part 32 of the light blocking ring 30 is connected with the lens 20 in a sealing mode, so that the front end of the lens module 40, the light blocking ring 30 and the lens 20 are enclosed to form the closed space 201, the possibility of inner surface fogging of the lens 20 is greatly reduced, the problem of inner surface fogging of the lens 20 of the monitoring equipment is effectively solved, and the clarity of a camera shooting picture is guaranteed. Since the stop ring 30 includes a first portion 31 sleeved outside the lens module 40 and a second portion 32 connected to one end of the first portion 31, the second portion 32 gradually expands outward from the end connected to the first portion 31 to the other end. Thus, the stop ring 30 can be prevented from blocking the angle of view of the lens module 40 as much as possible; moreover, the second portion 32 is hermetically connected to the lens 20, that is, the front shell 10 is located outside the second portion 32 of the light blocking ring 30, so that the front shell 10 does not block the field angle of the lens module 40 under the condition that the light blocking ring 30 does not block the field angle of the lens module 40, thereby ensuring the visible range of the lens module 40. Therefore, the monitoring equipment not only solves the problem of fogging of the lens 20, but also ensures the clarity of the image; and the influence on the field angle of the lens module 40 is avoided as much as possible, and the performance and the quality of the monitoring equipment are ensured.

The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims (10)

1. A monitoring device, comprising:

a front shell provided with a window;

the lens is fixed at the window;

the lens module is arranged in the front shell; and

the stop ring comprises a first part sleeved outside the lens module and a second part connected with one end of the first part, and the second part gradually expands outwards from one end connected with the first part to the other end;

the first part is connected with the lens module in a sealing mode, and the second part is connected with the lens in a sealing mode, so that a closed space is formed by the front end of the lens module, the light blocking ring and the lens in an enclosing mode.

2. The monitoring device of claim 1, wherein the front end of the lens module is located at a junction of the first portion and the second portion or the front end of the lens module extends into the second portion.

3. The monitoring device of claim 1, wherein the second portion flares outwardly at an angle greater than or equal to a field angle of the lens module.

4. The monitoring device of claim 1, wherein the second portion is provided in a tapered cylindrical shape.

5. The monitoring device of claim 1, wherein an end of the second portion distal to the first portion is secured to the lens by a spot seal.

6. The monitoring device of claim 5, wherein the second portion has a sealant groove at an end thereof connected to the lens for receiving a sealant.

7. The monitoring device of claim 1, wherein the first portion is configured to be cylindrical.

8. The monitoring device as claimed in claim 1, wherein the stop is made of metal or plastic material.

9. The monitoring device of claim 1, further comprising a first sealing ring disposed between the lens module and the first portion, wherein a mounting groove is disposed on an outer side of the lens module, and the first sealing ring is mounted in the mounting groove.

10. The monitoring device of claim 1, further comprising a rear housing, wherein a cavity is formed in the rear housing, an opening communicating with the cavity is formed in a front end of the rear housing, and the front housing is hermetically connected to the opening;

the monitoring equipment further comprises a core module, the core module is installed in the cavity, and the lens module is connected to the front end of the core module.

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