CN112532822A - Prevent condensation image acquisition device - Google Patents
Prevent condensation image acquisition device Download PDFInfo
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- CN112532822A CN112532822A CN202010912277.7A CN202010912277A CN112532822A CN 112532822 A CN112532822 A CN 112532822A CN 202010912277 A CN202010912277 A CN 202010912277A CN 112532822 A CN112532822 A CN 112532822A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/51—Housings
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/55—Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/52—Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
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- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Studio Devices (AREA)
- Cameras Adapted For Combination With Other Photographic Or Optical Apparatuses (AREA)
Abstract
The invention provides an anti-condensation image acquisition device, which comprises a shell, an image acquisition module and a temperature control module, wherein the image acquisition module comprises a camera module and a camera module; the shell is provided with a containing space which comprises an inner wall and an outer wall, the inner wall is provided with an air inlet and a first air outlet, the wall of the shell is provided with a window, the wall of the window is provided with a second air outlet, and a ventilation flow channel is arranged between the inner wall and the outer wall; the image acquisition module is arranged in the accommodating space, and a lens of the image acquisition module is positioned at the front part in the accommodating space, is opposite to the window and has a gap with the wall of the window opening; the temperature control module is positioned at the rear part in the accommodating space and is spaced from the image acquisition module, the temperature control module is provided with a heater and a fan, the heater and the fan are of an integrated structure, and an air outlet of the fan is opposite to the air inlet. The heater, the fan and the image acquisition module are structurally integrated to solve the problems of heat dissipation of the image acquisition module and condensation prevention of the lens, and the problems of uneven dissipation of the lens condensation and the like can be effectively solved.
Description
Technical Field
The invention relates to the technical field of optical imaging, in particular to an anti-condensation image acquisition device.
Background
With the development of optical imaging technology, image acquisition devices have been widely used in daily life and production.
In the image acquisition device of numerous applications, respective operational environment is also different, some can not influence image acquisition device's normal work, some can influence image acquisition device's normal work, like high temperature and high humidity or cold and hot alternate operational environment, under this kind of environment, the condensation phenomenon can often appear on image acquisition device's lens surface, to the image acquisition device who obtains dynamic image in real time, this kind of phenomenon can cause image acquisition device can't obtain the image to influence and produce the property ability.
Disclosure of Invention
The invention aims to provide an anti-condensation image acquisition device, which not only brings the heat of a heater to a lens surface, but also provides a heat dissipation mechanism for a processing chip by reasonably arranging the positions of all parts and improving a shell, thereby achieving two purposes.
In order to achieve the above purpose, the invention provides the following technical scheme:
an anti-condensation image capture device, comprising: the device comprises a shell, an image acquisition module and a temperature control module; the shell is provided with a containing space, the shell wall of the shell comprises an inner wall and an outer wall, an air inlet hole and a first air outlet hole are formed in the inner wall, a window is formed in the shell wall of the shell, a second air outlet hole is formed in the wall of the window, and a ventilation flow passage for communicating the air inlet hole with the first air outlet hole and the second air outlet hole is formed between the inner wall and the outer wall; the image acquisition module is arranged in the accommodating space, and a lens of the image acquisition module is positioned in the front part of the accommodating space, is opposite to the window and has a gap with the wall of the window opening; the temperature control module is positioned at the rear part in the accommodating space and is spaced from the image acquisition module, the temperature control module is provided with a heater and a fan, the heater and the fan are of an integral structure, and an air outlet of the fan is opposite to the air inlet.
Optionally, the window is flared in a direction from outside the housing to inside the housing.
Optionally, in a radial direction of the window, a gap is formed between the lens of the image acquisition module and the wall of the window opening.
Optionally, the inner wall comprises a front inner wall, a rear inner wall, and a circumferential side inner wall connected between the front inner wall and the rear inner wall; the air inlet is arranged on the rear inner wall; the first air outlet is arranged on the inner wall of the circumferential side and is positioned in front of the temperature control module; the window is located on the front inner wall.
Optionally, the first air outlet is located in front of the rear end surface of the image acquisition module.
Optionally, the anti-condensation image capturing device further includes: a temperature sensor and a controller; the temperature sensor is used for sensing the temperature of the lens and transmitting the sensed temperature to the controller in real time, and the controller controls the opening and closing of the heater and the fan according to the sensed temperature.
Optionally, the heater has a vent.
Optionally, one corner of the housing comprises: the front shell wall, the middle shell wall and the right shell wall are sequentially connected, the front shell wall and the right shell wall are positioned on the same side of the middle shell wall, and the window is formed in the middle shell wall; the shell is arranged at the mounting corner part on the inner side of the cabinet body of the unmanned sales counter through a support.
Optionally, the stent comprises: the first connecting plate is provided with a first bearing surface and a first connecting surface which are opposite, a first bulge is arranged on the first bearing surface, and the first bulge is clamped with a first groove arranged on the shell; and the second connecting plate is connected with the first connecting plate to form an L shape, and is provided with a second bearing surface and a second connecting surface which are opposite, a second bulge is arranged on the second bearing surface, the second bulge is connected with a second groove arranged on the shell in a clamping manner, and the second connecting surface and/or the first connecting surface is connected with the cabinet body of the unmanned sales counter.
Optionally, the first groove is a through hole, and the through hole includes: the diameter of the first sub through hole is larger than that of the second sub through hole, and the diameter of the radial channel is smaller than that of the second sub through hole; the first projection includes: the first cylinder and the second cylinder that the axial is unanimous, the diameter of first cylinder is less than the diameter of first sub-through-hole, and is greater than the diameter of second sub-through-hole, the diameter of second cylinder is less than the diameter of second sub-through-hole.
Compared with the prior art, the invention has the following beneficial effects:
1. the anti-condensation image acquisition device provided by the invention can synchronously solve the problems of heat dissipation of the image acquisition module and lens anti-condensation.
2. The anti-condensation image acquisition device provided by the invention can structurally integrate the heater, the fan and an image acquisition module, such as an industrial camera unit.
3. The condensation-preventing image acquisition device provided by the invention can effectively improve the lens condensation dissipation efficiency by reasonably arranging the shell, and the air outlet holes are arranged at 360 degrees around the lens, so that the problem of uneven lens condensation dissipation can be effectively solved, and the fog dissipation effect is better.
4. The anti-condensation image acquisition device provided by the invention controls the start of the heater and the fan through the temperature control module.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. Wherein:
fig. 1 is a schematic structural diagram of an anti-condensation image acquisition device according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of another anti-condensation image capturing device according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of a first protrusion according to an embodiment of the present invention;
description of reference numerals:
1-a shell; 101-a front housing wall; 102-an intermediate shell wall; 103-right lateral shell wall; 104-rear housing wall; 105-left shell wall; 11-a window; 12-an inner wall; 121-front inner wall; 122-rear inner wall; 123-circumferential side inner wall; 13-outer wall; 14-a first outlet aperture; 15-a second air outlet; 16-a first groove; 161-a first sub-via; 162-a second sub-via; 17-a second groove; 18-a third groove; 19-a fourth groove;
2-a temperature control module; 21-a fan; 22-a heater; 3-an image acquisition module; 31-a camera unit; 32-lens; 4-a scaffold; 40-a guide groove; 41-a first connection plate; 42-a second connecting plate; 43-a first projection; 431-a first cylinder; 432-second cylinder.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the invention, and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit thereof. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
As shown in fig. 1, an embodiment of the present invention provides an anti-condensation image capturing device. The device includes: the device comprises a shell 1, a temperature control module 2 and an image acquisition module 3. Specifically, the housing 1 has a thickness, and includes an inner wall 12 and an outer wall 13, which are spaced apart from each other to form a ventilation flow path. An air inlet hole and a first air outlet hole 14 are arranged on the inner wall, and the air inlet hole is communicated with the first air outlet hole 14 through a ventilation flow passage. A window 11 is formed in the wall of the housing 1, and the window 11 extends through the inner wall 12 and the outer wall 13. The wall of the window opening which forms the window 11 is connected between the inner wall 12 and the outer wall 13, a second air outlet hole 15 is arranged on the wall of the window opening, and the second air outlet hole 15 is communicated with the air inlet hole through a ventilation flow passage. An accommodating space is formed inside the housing 1, and a temperature control module 2 and an image acquisition module 3 are disposed inside the accommodating space. The receiving space communicates with the external environment through a window 11. The shape of the housing 1 may be a hollow rectangular parallelepiped or a cube, or may be other shapes, which is not limited in this embodiment. In order to facilitate the flow direction of the hot air, the axial direction of the first outlet hole 14 is inclined to the window 11 side, and in fig. 1, the axial direction of the first outlet hole 14 is horizontally inclined downward.
The temperature control module 2 is disposed inside the accommodating space, and has a heater 22 and a fan 21. The heater 22 is used to provide heat and the fan 2 is used to generate an air flow. In order to ensure a good heating effect, the heater 22 and the fan 21 are integrated, that is, the heater 22 and the fan 21 are integrated, so that not only can the occupied space be effectively saved, but also the heat energy utilization rate of the heater 22 can be improved. Preferably, the heater 22 has a vent hole to increase the air flow rate of the fan 21. The air outlet of the fan 21 is opposite to the air inlet, so that the air output by the fan 21 can directly enter the air inlet, and the loss is reduced.
The image capturing module 3 is used for capturing images, such as continuous images, and is disposed inside the accommodating space and includes a camera unit 31 and a lens 32. The camera unit 31 is arranged opposite to the lens 32 and the lens 32 is arranged opposite to the window so that the scene of the object enters the lens 32 after passing through the window 11. The scene of the object is reflected on the camera unit 31 through the lens 32, and the image of the object is processed by the camera unit 31. There is a gap between the image acquisition module 3 and the temperature control module 2.
The outer surface of the lens 32 is usually arc-shaped, and some of the lens 32 may be provided with a protective cover outside the outer surface, the protective cover is arc-shaped, at this time, in order to facilitate the hot air to flow to the lens 32, in the direction from the outside of the housing to the inside of the housing, the window 11 is flared, that is, the inner diameter of the window 11 gradually increases. Preferably, the junction of the inner edge of the window aperture wall and the inner wall 12 is formed with a chamfer.
The axial direction of the window 11 is a direction from inside the housing to outside the housing, such as up and down direction in fig. 1, and the radial direction of the window 11 is perpendicular to the axial direction of the window 11, such as left and right direction in fig. 1. In the radial direction of the window 11, there is a gap between the lens 31 of the image capturing module 3 and the wall of the window opening, but the lens 31 is not exposed outside the window 11, and at this time, the lens 31 is embedded in the window 11, and the height of the outer surface (i.e. the lower surface in fig. 1) of the lens 31 is higher than or equal to that of the outer surface of the housing 1, so as to facilitate the flow direction of hot air and the heating treatment of the lens. When the lens 31 is used, the lens may not be exposed outside the housing 1, and may also be exposed outside the housing 1 by a preset distance, where the preset distance may be 1.5mm to 2.5mm, and is preferably 2mm in this embodiment.
The inner wall 12 includes: a front inner wall 121, a rear inner wall 122, and a circumferential side inner wall 123 connected between the front inner wall 121 and the rear inner wall 122. The front inner wall 121 is a lower inner wall in fig. 1, the rear inner wall 122 is an upper inner wall in fig. 1, and the circumferential side inner wall 123 is a side inner wall formed to rotate in the axial direction of the window 11, and a part of the side inner walls, i.e., a left side inner wall and a right side inner wall, which are oppositely disposed, are shown in fig. 1. The window 11 is located on the front inner wall 121. The inlet port sets up on back inner wall 122, and the quantity of first venthole 14 is a plurality of, and a plurality of first ventholes 14 all set up on circumference side inner wall 123 to each first venthole 14 all is located temperature control module 2's the place ahead, and the height that highly is less than temperature control module 2's preceding terminal surface (like the lower terminal surface in fig. 1) of each first venthole 14 promptly, so do benefit to and reduce the influence of temperature control module 2 to the hot-blast. All first ventholes can divide into the first venthole of multiunit, and the first venthole of every group contains a plurality of first ventholes, and the first venthole of every group is the annular, along image acquisition module 3's circumference (this circumference uses the vertical axle of window in figure 1 as the direction of rotation) equipartition. Preferably, the first air outlet holes 14 are located in front of the rear end surface of the image capturing module 3, that is, the height of each first air outlet hole 14 is lower than the height of the rear end surface (e.g., the upper end surface in fig. 1) of the image capturing module 3, which is beneficial to reducing the influence of the hot air on the temperature control module 2. The outer diameter (dimension perpendicular to the axial direction of the window) of the rear end face of the temperature control module 2 is the largest outer diameter surface of the outer surfaces of the temperature control module 2, and is larger than the outer diameters of the front end face and the middle portion of the temperature control module 2.
The diameter of the first venthole that sets up around camera unit 31 is greater than the second venthole diameter that sets up around camera lens 32, so set up and to guarantee to compare in the great image acquisition module 31 of camera lens 32 heat production also can realize rapid cooling. The first air outlet hole arranged around the camera unit 31 is arranged on the side wall of the shell 1 (the left side wall and the right side wall shown in fig. 1) and can dissipate heat for the image acquisition module 3 and the temperature control module 2, namely, air flow blown out from the first air outlet hole on the inner side wall of the shell 1 can directly act on the image acquisition module 3, when the air flow flows through the image acquisition module 3, heat generated by the operation of the air flow is taken away, and then the air flow flows out of the shell 1 through a gap between the window 11 and the lens 32, and the air flow also plays a corresponding role in dispersing fog or defogging on the lens 32 when flowing through the lens 32, so that the double effects are achieved.
The temperature control device 3 further includes: a temperature sensor and a controller. The temperature sensor can be used for sensing the temperature at the lens 32 and transmitting the sensed temperature to the controller in real time, the controller is connected with the temperature sensor and is also connected with the fan 21 and the heater 22 to control the heater 22 and the fan 21 to be turned on or turned off, namely the controller drives the heater 22 and the fan 21 after judging the temperature information, so that the damage of devices or safety accidents caused by the long-term operation of the heater 22 and the fan 21 is avoided. Preferably, the temperature sensor is an 18B20 temperature sensor.
In the embodiment, the fan 21 and the heater 22 are respectively provided with a temperature control switch, and when the temperature in the casing 1 reaches a preset temperature (or called action temperature), the temperature control switch is turned off, and the fan 21 and the heater 22 stop working; when the temperature in the casing reaches the reset temperature, the temperature control switch is closed, and the fan 21 and the heater 22 start to operate. The preset temperature is generally between 14 ℃ and 60 ℃, preferably 45 ℃ in this embodiment, and in other alternative embodiments, the preset temperature may be other values, and the specific temperature value is specifically determined according to the actual usage environment temperature, which is not limited in this embodiment.
Specifically, the temperature-controlled switches respectively controlling the fan 21 and the heater 22 are turned on or off, that is, the integrated device of the fan 21 and the heater 22 providing the air flow is controlled by the controller, which includes the following cases:
1. when the preset maximum temperature is reached in the casing 1, that is, when the heat generated during the operation of the image acquisition module 3 reaches the preset maximum temperature (or called action temperature, generally above 60 ℃), the temperature control switch of the fan 21 is controlled to be turned on, the temperature control switch of the heater 22 is controlled to be turned off, at this time, the fan 21 operates to dissipate heat inside the image acquisition module, and the heater 22 stops operating.
2. When the temperature in the housing 1 reaches the preset minimum temperature, that is, when the heat generated by the image capturing module 3 during operation reaches the preset minimum temperature (or called action temperature, generally below 40 ℃), the two temperature control switches respectively controlling the fan 21 and the heater 22 are both closed, at this time, the fan 21 and the heater 22 both start to operate, the fan 21 blows the heat generated by the heater 22 into the internal space of the housing 1 and around the lens 32 from the air hole 12 through the ventilation flow channel, thereby ensuring the operating temperature of the image capturing module 3, and avoiding the lens 32 from generating condensation due to the internal and external temperature difference.
3. When the temperature in the housing 1 is between the preset temperatures, that is, when the heat generated by the image capturing module 3 during operation is between the preset temperatures (or called operating temperature, generally between 40 ℃ and 60 ℃), the two temperature control switches respectively controlling the fan 21 and the heater 22 are both controlled to be turned off, and at this time, the fan 21 and the heater 22 both stop operating.
In order to facilitate the uniform distribution of hot air on the lens 32, especially in the central area of the lens (the central area of the lens is convex relative to the edge of the lens), the number of the second air outlet holes 15 is multiple, the multiple second air outlet holes 15 are uniformly arranged along the circumferential direction of the window 11 and are arranged in an annular shape, and at the moment, the multiple second air outlet holes 15 are in a common circle. The housing wall of the housing with the window is provided with a groove, namely the housing wall is provided with a first bulge part protruding towards the accommodating space, the opening end of the bulge part is positioned on the inner side surface of the housing wall, the housing wall is provided with a second bulge part protruding towards the housing, the opening of the bulge part is positioned on the inner side surface of the housing wall, and the inner side surface of each housing wall refers to the side surface contacting with the ventilation flow channel. The quantity of each uplift is a plurality of, a plurality of first uplift and a plurality of second uplift interval arrangement respectively, and be array arrangement, to accommodation space, first uplift is the arch, to the ventilation runner, first uplift is the recess, the second uplift also is the recess, under the dual function of first uplift and second uplift, can change hot-blast flow direction, increase hot-blast disturbance, do benefit to hot-blast diffusion, can avoid hot-blast from the 15 back that flow out of second exhaust vent, direct very rush to the marginal flow of camera lens, can also reduce the flow resistance who increases because of setting up the rotating rib.
Referring to fig. 2 to 3, in order to improve the field of view of the present module, one corner portion of the housing 1 includes in the circumferential direction: front casing 101, middle casing 102 and right side casing 103, front casing 101 is connected with one end of middle casing 102 at one end, middle casing 102 is connected with one end of right side casing 103 at the other end, front casing 101 and right side casing 103 are located on the same side of middle casing 102, and middle casing 102 is opened with window 11. That is, one edge of the housing 1 is obliquely cut away to form an inclined plane (i.e., a plane formed by the intermediate housing wall) on which the window 11 is opened. Since the lens 32 of the image acquisition module is opposite the window 11, the lens 32 of the image acquisition module is mounted in the housing 1 in an inclined manner, which facilitates the mounting of the device in the corner of an unmanned sales counter or vending machine, referred to as the mounting corner. The corner of the device opposite the corner is connected to the mounting corner. Two housing walls forming corners opposite the corners: one can be a horizontal wall (or called a back wall, such as the top wall in fig. 2) and the other can be a vertical wall (such as the left side wall in fig. 2), which can be conveniently attached to the mounting corner of the unmanned sales counter on which the device is mounted. When the cabinet is installed, the shell 1 is arranged at the corner of the inner side of the cabinet body of the unmanned sales cabinet through the bracket 4. In particular, the housing 1 is connected to the bracket 4 by means of a snap connection, and the housing 1 is also detachably connected to the corner, for example by means of screws, so that the mounting and dismounting of the device are facilitated.
Specifically, the holder 4 includes: the first connecting plate 41 and the second connecting plate 42 are connected in an L shape, and the joint may be in a circular arc transition. The first connecting plate 41 has a first bearing surface and a first connecting surface opposite to each other, the first bearing surface is provided with a first protrusion 43, and the first protrusion 43 is engaged with a first groove 16 provided on the housing 1, such as a first groove provided on the rear wall 104. The second connection board 42 has a second carrying surface and a second connection surface opposite to each other, the second carrying surface is provided with a second protrusion (not shown), the second protrusion is connected with a second groove 17 provided on the housing 1, for example, the second groove provided on the left housing wall 105 is clamped, and the second connection surface and/or the first connection surface is connected with the cabinet body of the unmanned sales counter, so that the connection strength of the bracket 2 with the device and the cabinet body can be improved, the device is fixed and stable, and the installation angle of the device can be ensured.
The cabinet body generally has four bights, and in order to adapt to the bight of different positions, first recess 16 is the through-hole, and the through-hole includes: the first sub through hole 161 and the second sub through hole 162 are radially penetrated by a radial passage, the diameter of the first sub through hole 161 is larger than that of the second sub through hole 162, and the diameter of the radial passage is smaller than that of the second sub through hole 162. The first projection 43 includes: the first cylinder 431 and the second cylinder 432 are axially consistent, the diameter of the first cylinder 431 is smaller than that of the first sub through hole 161 and larger than that of the second sub through hole 162, and the diameter of the second cylinder 432 is smaller than that of the second sub through hole 162. The second protrusion may be cylindrical and correspondingly the second recess 17 may be cylindrical, and the number may be two. In fig. 2, during installation, the first cylinder 431 of the first connecting plate 41 moves downward first until entering the first sub through hole 161, the second protrusion is adjusted until being aligned with the second groove 17, then the second connecting plate 42 is pushed horizontally, so that the second protrusion is embedded into the second groove 17, and meanwhile, the first cylinder 431 and the second cylinder 432 move horizontally, the first cylinder 431 moves below the second sub through hole 162, and the second cylinder 432 enters the second sub through hole 162 through a radial channel. Since the diameter of the first cylinder 431 is larger than that of the second sub through hole 162, it is caught by the housing 1 and does not slip out of the second sub through hole 162. The radial passage may be formed by embedding the second sub through hole 162 and the first sub through hole 161, that is, the hole wall of the second sub through hole 162 intersects with the hole wall of the first sub through hole 161, and the radial passage is formed at the intersection. The first sub through hole and the second sub through hole are arc-shaped in transverse section, so that corners of different positions of the cabinet body can be used conveniently.
In order to further improve the installation stability, a third groove 18 is formed on the side wall of the housing provided with the first groove 16, the third groove 18 is used for embedding the first connecting plate 41, the cross sectional area of the third groove 18 is larger than that of the first groove 16, a fourth groove 19 is formed on the side wall of the housing provided with the second groove 17, the fourth groove 19 is used for embedding the second connecting plate 42, the cross sectional area of the fourth groove is larger than that of the second groove 17, and the groove wall or the groove bottom of each groove is in contact with the first connecting plate 41 or the second connecting plate 42 through the third groove 18 and the fourth groove 19, so that each connecting plate is stably supported.
In order to facilitate the matching of the positioning protrusion and the groove, a guide groove 40 is formed in the side wall of the housing provided with the second groove 17, correspondingly, a guide rod (not shown) is arranged on the second connecting plate 42, and during installation, the guide rod is positioned in the guide groove 40, so that the second connecting plate 42 can be rapidly moved, and the clamping of the protrusion and the groove is realized.
In conclusion, through setting up the condensation image acquisition module that prevents that this application provided in inside the casing rationally, not only can bring the heat of heater 22 to the surface of camera lens 32, can also provide the heat dissipation mechanism for each inside part of casing simultaneously, for example handle chip etc. and kill two birds with one stone. Moreover, because heater 22 and fan 21 work for a long time and cause the damage of device easily, and there is the potential safety hazard, consequently the condensation image acquisition module of preventing of this application still includes inside temperature control module 2 that has increased, the temperature sensor that temperature control module 2 includes can the temperature variation of the inside and camera lens 32 department of real-time supervision casing, and transmit the temperature information who monitors for the controller, the controller drives opening or closing of heater 22 and fan 21 according to the temperature condition, can guarantee to design safe and reliable more.
The condensation-preventing image acquisition module provided by the invention can effectively improve the lens condensation dissipation efficiency by reasonably arranging the shell, and the air outlet holes are arranged at 360 degrees around the lens, so that the problem of uneven lens condensation dissipation can be effectively solved, and the fog dispersing effect is better.
Compared with the prior art, the invention has the following beneficial effects:
1. the anti-condensation image acquisition device provided by the invention can synchronously solve the problems of heat dissipation of the image acquisition module and lens anti-condensation.
2. The anti-condensation image acquisition device provided by the invention can structurally integrate the heater, the fan and an image acquisition module, such as an industrial camera unit.
3. The condensation-preventing image acquisition device provided by the invention can effectively improve the lens condensation dissipation efficiency by reasonably arranging the shell, and the air outlet holes are arranged at 360 degrees around the lens, so that the problem of uneven lens condensation dissipation can be effectively solved, and the fog dissipation effect is better.
4. The anti-condensation image acquisition device provided by the invention controls the start of the heater and the fan through the temperature control module.
The above is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An anti-condensation image capture device, comprising: the device comprises a shell, an image acquisition module and a temperature control module;
the shell is provided with a containing space, the shell wall of the shell comprises an inner wall and an outer wall, an air inlet hole and a first air outlet hole are formed in the inner wall, a window is formed in the shell wall of the shell, a second air outlet hole is formed in the wall of the window, and a ventilation flow passage for communicating the air inlet hole with the first air outlet hole and the second air outlet hole is formed between the inner wall and the outer wall;
the image acquisition module is arranged in the accommodating space, and a lens of the image acquisition module is positioned in the front part of the accommodating space, is opposite to the window and has a gap with the wall of the window opening;
the temperature control module is positioned at the rear part in the accommodating space and is spaced from the image acquisition module, the temperature control module is provided with a heater and a fan, the heater and the fan are of an integral structure, and an air outlet of the fan is opposite to the air inlet.
2. The anti-condensation image capturing device according to claim 1, wherein the window is flared in a direction from outside the housing to inside the housing.
3. The anti-condensation image capturing device according to claim 2, wherein a gap is formed between the lens of the image capturing module and the wall of the window opening in a radial direction of the window.
4. The anti-condensation image acquisition device according to claim 1, wherein the inner wall comprises a front inner wall, a rear inner wall and a circumferential side inner wall connected between the front inner wall and the rear inner wall;
the air inlet is arranged on the rear inner wall;
the first air outlet is arranged on the inner wall of the circumferential side and is positioned in front of the temperature control module;
the window is located on the front inner wall.
5. The anti-condensation image acquisition device according to claim 1, wherein the first air outlet hole is located in front of the rear end surface of the image acquisition module.
6. The anti-condensation image capture device according to claim 1, further comprising: a temperature sensor and a controller;
the temperature sensor is used for sensing the temperature of the lens and transmitting the sensed temperature to the controller in real time, and the controller controls the opening and closing of the heater and the fan according to the sensed temperature.
7. The anti-condensation image capturing device according to claim 1, wherein the heater has a vent.
8. The automatic defogging camera device recited in claim 1 wherein one corner portion of said housing comprises: the front shell wall, the middle shell wall and the right shell wall are sequentially connected, the front shell wall and the right shell wall are positioned on the same side of the middle shell wall, and the window is formed in the middle shell wall;
the shell is arranged at the mounting corner part on the inner side of the cabinet body of the unmanned sales counter through a support.
9. The automatic defogging camera device according to claim 8, wherein said bracket comprises:
the first connecting plate is provided with a first bearing surface and a first connecting surface which are opposite, a first bulge is arranged on the first bearing surface, and the first bulge is clamped with a first groove arranged on the shell; and
the second connecting plate, with first connecting plate is connected and is the L shape, has relative second loading face and second and connects the face, it is protruding to be provided with the second on the second loading face, the second protruding with the second recess joint that sets up on the shell, the second connect the face and/or first connection face with the cabinet body coupling of unmanned sales counter.
10. The automatic defogging camera device according to claim 9, wherein said first recess is a through hole, said through hole comprising: the diameter of the first sub through hole is larger than that of the second sub through hole, and the diameter of the radial channel is smaller than that of the second sub through hole;
the first projection includes: the first cylinder and the second cylinder that the axial is unanimous, the diameter of first cylinder is less than the diameter of first sub-through-hole, and is greater than the diameter of second sub-through-hole, the diameter of second cylinder is less than the diameter of second sub-through-hole.
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| CN201910847072 | 2019-09-02 | ||
| CN2019108470722 | 2019-09-02 |
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| CN112532822B CN112532822B (en) | 2022-10-11 |
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|---|---|---|---|---|
| CN116149116A (en) * | 2023-04-18 | 2023-05-23 | 江西联创电子有限公司 | Lens structure, camera module and electronic equipment |
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| CN112532822B (en) | 2022-10-11 |
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