CN110677572A

CN110677572A - Antifog camera

Info

Publication number: CN110677572A
Application number: CN201911066196.3A
Authority: CN
Inventors: 燕燕
Original assignee: 燕燕
Current assignee: SHENZHEN FSAN INTELLIGENT TECHNOLOGY Co.,Ltd.
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-01-10
Anticipated expiration: 2039-11-04
Also published as: CN110677572B

Abstract

The invention discloses an antifogging camera which comprises a lens barrel, wherein lenses are embedded in the lens barrel, a plurality of strip-shaped grooves are formed in the side wall of the lens barrel at equal intervals along the circumferential direction of the lens barrel, a plurality of wedge-shaped air outlets communicated with the strip-shaped grooves are formed in the side wall of the lens barrel, a power generation assembly formed by connecting a plurality of thermoelectric power generation pieces in series is embedded in the lens barrel, a heating wire electrically connected with the power generation assembly is embedded in each wedge-shaped air outlet, a telescopic air bag is fixedly connected to the inner wall of each strip-shaped groove, and a driving device for driving the telescopic air bag to stretch is installed in each strip-shaped groove. The invention drives the telescopic air bag to extend back and forth through the electromagnet, high-speed air is blown out of the lens, the blown air can quickly evaporate water mist on the lens after being heated by the electric heating wire, and the monitoring definition is prevented from being influenced by long-time condensed water mist on the lens of the camera.

Description

Antifog camera

Technical Field

The invention relates to the technical field of placement of monitoring equipment, in particular to an anti-fog camera.

Background

The monitoring camera is a semiconductor imaging device and has the advantages of high sensitivity, strong light resistance, small distortion, small volume, long service life, vibration resistance and the like. In a security system for a surveillance camera.

Under the circumstances that the outside air temperature is low, humidity is big (for example in early morning or evening in autumn and winter season), the aqueous vapor of high concentration in the air, low temperature and the lens surface contact of camera, because the camera is high at the inside electronic component temperature that generates heat of during operation, microthermal aqueous vapor can liquefy and form one deck water smoke at the lens surface that the temperature is high, very big reduction the definition of camera control, because the camera that the control was used is installed aloft generally, this makes the clearance water smoke very inconvenient, and can install more camera in some key control occasions (like the bank), need longer time to remove the clearance water smoke.

Thermoelectric power generation chips, also called thermoelectric power generation chips, are devices which are manufactured by adopting a unique thin film technology to generate electric energy according to the seebeck effect principle, and are commonly used semiconductor thermoelectric couples, namely direct current power generation devices which are manufactured by connecting a group of semiconductor thermoelectric couples in series and in parallel. Each thermocouple is formed by connecting an N-type semiconductor and a P-type semiconductor in series, one end of the N-type semiconductor and the P-type semiconductor which are connected in series is contacted with a high-temperature heat source, the non-junction ends of the N-type semiconductor and the P-type semiconductor are contacted with a low-temperature heat source through leads, and the cold end of the P has negative charge accumulation to become the cathode of the generator due to the temperature difference between the hot end and the cold end; the cold end of N has positive charges accumulated to become an anode, and if the cold end is connected with an external circuit, current flows through the cold end.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides an anti-fog camera which can enable a telescopic air bag to move back and forth by switching on and off an electromagnet, so that high-speed air can be blown out of a lens, the blown air can quickly evaporate water mist on the lens after being heated by an electric heating wire, and the monitoring definition is prevented from being influenced by long-time condensed water mist on the lens of the camera; through the electromagnet on, outage, can make arc magnet drive lens make a round trip to rotate in the camera lens section of thick bamboo repeatedly for can make the defogging more thorough when the defogging speed.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an antifog camera, includes a lens barrel, the embedded lens that is equipped with of lens barrel, a plurality of bar grooves have been seted up along its circumference equidistant to the lateral wall of lens barrel, a plurality of wedge air outlets with bar groove intercommunication are seted up to the lateral wall of lens barrel, the embedded electricity generation subassembly that is equipped with a plurality of thermoelectric generation pieces series connection and forms of lens barrel, every all inlay in the wedge air outlet be equipped with electricity generation subassembly electric connection's heating wire, the flexible gasbag of fixedly connected with on the inner wall in bar groove, the flexible drive arrangement of the flexible gasbag of drive is installed to the bar inslot.

Preferably, drive arrangement includes the electro-magnet of sliding connection on the bar inslot wall, the flexible end fixed connection of electro-magnet and flexible gasbag, just electro-magnet and power generation component electric connection, fixedly connected with iron plate on the bar inslot wall, install first touch switch and second touch switch on the inner wall in bar groove, just first touch switch and second touch switch all control the break-make of electro-magnet internal current.

Preferably, the arc-shaped magnetic block corresponding to the electromagnet is embedded on the circumferential side wall of the lens, and the arc-shaped magnetic block and the electromagnet have magnetic poles which repel each other.

The invention has the following beneficial effects:

1. the current generated by the power generation assembly enables the current inside the electromagnet to be conducted and generate magnetism, the electromagnet approaches to the iron block under the action of the magnetic force, the telescopic air bag is opened, the current inside the electromagnet is disconnected when the electromagnet is contacted with the second contact switch, the electromagnet loses the magnetism, the telescopic air bag is retracted, high-speed air is blown out of the lens at the moment, the blown air is heated by the electric heating wire and can quickly evaporate water mist on the lens, and the monitoring definition is prevented from being influenced by long-time condensation of the water mist on the camera lens;

2. through set up a plurality of arc magnetic paths corresponding with the electro-magnet and that the magnetic pole is repulsive at the lens perisporium, when the electro-magnet circular telegram, can promote the lens to rotate certain angle under the effect of magnetic force, when the electro-magnet outage, the iron core in the electro-magnet attracts arc magnet to make lens antiport, makes the lens make a round trip to rotate in the lens barrel repeatedly like this, and the increase defogging area also improves defogging efficiency simultaneously.

Drawings

Fig. 1 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A in the first embodiment of the present invention;

FIG. 3 is a schematic structural diagram according to a second embodiment;

FIG. 4 is a schematic cross-sectional view taken along line B-B in the second embodiment.

In the figure: 1 lens section of thick bamboo, 2 lenses, 3 bar grooves, 4 wedge air outlets, 5 electro-magnets, 6 iron plates, 7 flexible gasbags, 8 heating wires, 9 first touch switch, 10 second touch switch, 11 arc magnetic path.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The first embodiment is as follows:

referring to fig. 1-2, an antifogging camera comprises a lens barrel 1, a lens 2 is embedded in the lens barrel 1, a plurality of strip-shaped grooves 3 are formed in the side wall of the lens barrel 1 at equal intervals along the circumferential direction of the lens barrel, a plurality of wedge-shaped air outlets 4 communicated with the strip-shaped grooves 3 are formed in the side wall of the lens barrel 1, the lens 2 can be covered by discharged air through the wedge-shaped air outlets 4, a power generation assembly formed by connecting a plurality of thermoelectric power generation pieces in series is embedded in the lens barrel 1, a heating wire 8 electrically connected with the power generation assembly is embedded in each wedge-shaped air outlet 4, a telescopic air bag 7 is fixedly connected to the inner wall of each strip-shaped groove 3, a driving device for driving the telescopic air bag 7 to stretch is installed in each strip-shaped groove 3, the driving device comprises an electromagnet 5 slidably connected to the inner wall of each strip-shaped groove 3, the, fixedly connected with iron plate 6 on the 3 inner walls in bar groove, install first touch switch 9 and second touch switch 10 on the inner wall in bar groove 3, wherein iron plate 6 is kept away from to first touch switch 9, and second touch switch 10 is close to iron plate 6, and first touch switch 9 and second touch switch 10 all control the break-make of 5 internal currents of electro-magnet.

In this embodiment, when the outside air temperature is low and a large temperature difference is generated between the outside air temperature and the inside of the camera, a thermal induction current is generated inside the power generation assembly composed of a plurality of temperature difference power generation sheets, and the current is led to the electric heating wire 8 to heat the power generation assembly, and the electric magnet 5 generates magnetism, under the action of the magnetic force, the electric magnet 5 drives the telescopic airbag 7 to move towards the iron block 6, the telescopic airbag 7 is opened, the telescopic airbag 7 sucks air from the wedge-shaped air outlet 4, the sucked air is heated by the electric heating wire 8, when the electric magnet 5 moves to contact with the second touch switch 10, the current inside the electric magnet 5 is cut off and the magnetism of the electric magnet 5 is lost, at this time, the telescopic airbag 7 retracts to spray the air inside the electric magnet out from the wedge-shaped air outlet 4, and is heated by the electric heating wire 8 again during spraying, so that the sprayed air has a high temperature, and, the surface of the camera is prevented from condensing water mist for a long time, and the water mist on the surface of the camera does not need to be cleaned manually;

when the telescopic airbag 7 retracts to the initial state, the electromagnet 5 is driven to be in contact with the first touch switch 9, at the moment, the first touch switch 9 conducts the current inside the electromagnet 5 to enable the electromagnet 5 to generate magnetism, the electromagnet 5 is attracted by the iron block 6 again and moves towards the direction of the iron block 6, and therefore the device can operate circularly.

Example two:

referring to fig. 3-4, different from the first embodiment, the lens 2 slides in a sealing manner with the inner wall of the lens barrel 1 to ensure that the lens 2 can rotate freely along the central axis thereof, the arc-shaped magnetic block 11 corresponding to the electromagnet 5 is embedded on the circumferential side wall of the lens 2, the arc-shaped magnetic block 11 and the electromagnet 5 repel each other in magnetic pole, and when the electromagnet 5 is energized, the electromagnet 5 and the corresponding arc-shaped magnetic block 11 repel each other in magnetic pole.

In this embodiment, when electro-magnet 5 circular telegram, will produce the repulsion to arc magnetic path 11, make 2 anticlockwise rotations certain angles of lens, when 5 outage of electro-magnet, iron core in the electro-magnet 5 can attract arc magnetic path 11, and drive 2 clockwise rotations certain angles of lens, when 5 circular telegrams once more of electro-magnet, lens 2 will anticlockwise rotation certain angle again, make lens 2 make a round trip to rotate at lens barrel 1 repeatedly like this, the hot-air that wedge air outlet 4 blew out can be more comprehensive covers the surface of lens 2, can make the defogging more thoroughly again when accelerating defogging speed.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides an antifog camera, includes a lens barrel (1), embedded lens (2) that are equipped with in lens barrel (1), its characterized in that, a plurality of bar grooves (3) have been seted up along its circumference equidistant to the lateral wall of lens barrel (1), wedge air outlet (4) a plurality of and bar groove (3) intercommunication are seted up to the lateral wall of lens barrel (1), the embedded electricity generation subassembly that forms that is equipped with a plurality of thermoelectric generation piece series connection in lens barrel (1), every all inlay in wedge air outlet (4) and be equipped with heating wire (8) with electricity generation subassembly electric connection, fixedly connected with flexible gasbag (7) on the inner wall in bar groove (3), install the flexible drive arrangement of drive flexible gasbag (7) in bar groove (3).

2. The anti-fog camera according to claim 1, wherein the driving device comprises an electromagnet (5) slidably connected to an inner wall of the bar-shaped groove (3), the electromagnet (5) is fixedly connected with a telescopic end of a telescopic air bag (7), the electromagnet (5) is electrically connected with the power generation assembly, an iron block (6) is fixedly connected to the inner wall of the bar-shaped groove (3), a first touch switch (9) and a second touch switch (10) are installed on the inner wall of the bar-shaped groove (3), and the first touch switch (9) and the second touch switch (10) both control on-off of an internal current of the electromagnet (5).

3. The anti-fog camera as claimed in claim 1 or 2, wherein the arc-shaped magnetic block (11) corresponding to the electromagnet (5) is embedded on the circumferential side wall of the lens (2), and the magnetic poles of the arc-shaped magnetic block (11) and the electromagnet (5) repel each other.