CN115942091A - Defogging heat dissipation module and camera - Google Patents
Defogging heat dissipation module and camera Download PDFInfo
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- CN115942091A CN115942091A CN202211311664.0A CN202211311664A CN115942091A CN 115942091 A CN115942091 A CN 115942091A CN 202211311664 A CN202211311664 A CN 202211311664A CN 115942091 A CN115942091 A CN 115942091A
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Abstract
The invention relates to the technical field of waterproof detection, and discloses a demisting heat dissipation module and a camera, wherein the demisting heat dissipation module comprises: a housing and a refrigerator; the refrigerator is located the casing, and the refrigerator has cold junction and hot junction, and the casing is equipped with transparent window, and the hot junction is connected with transparent window heat conduction. Among the above-mentioned defogging heat dissipation module, the refrigerator absorbs near the heat of cold junction and conducts to the hot junction to conduct transparent window, on the one hand, in time distributes away the inside heat of casing through transparent window, and on the other hand no matter is cold junction refrigeration or outside low temperature environment all causes condensation formation water smoke or frost on the transparent window easily, through heating transparent window, can prevent in advance that the formation of above-mentioned water smoke or frost influences the normal work of camera. Or when the temperature is too low, the hot end heats the transparent window and heats and melts the formed ice. The structure can simultaneously utilize the refrigerator to radiate the inside of the shell, and utilize the heat at the hot end of the refrigerator to deice or prevent icing.
Description
Technical Field
The invention relates to the technical field of waterproof detection, in particular to a demisting and heat dissipation module and a camera.
Background
At present, thermal imaging cameras are mostly applied to the fields of forest fire prevention, fishing-forbidden engineering, electric power monitoring and the like. In the long-term working process of the thermal imaging camera, a large amount of heat can be generated inside the thermal imaging camera, and the working performance is influenced; meanwhile, a transparent window used for light to pass through on the shell is easy to be cooled to form water mist or frost, and imaging quality is affected.
Disclosure of Invention
The invention discloses a defogging and heat dissipation module and a camera, which are used for simultaneously relieving the problems of insufficient heat dissipation and water fog and frost formation of a transparent window.
In order to achieve the purpose, the invention provides the following technical scheme:
in a first aspect, a defogging and heat dissipating module is provided, which includes: a housing and a refrigerator; the refrigerator is positioned in the shell and provided with a cold end and a hot end, the shell is provided with a transparent window, and the hot end is in heat conduction connection with the transparent window and the shell respectively.
In above-mentioned defogging heat dissipation module, the refrigerator absorbs near the heat of cold junction and conducts to the hot junction to conduct transparent window, on the one hand, in time distributes away the inside heat of casing through transparent window, and on the other hand, no matter cold junction refrigeration or outside low temperature environment all cause transparent window to go up the condensation and form water smoke or frost easily, through heating transparent window, can prevent the normal work that camera was influenced in advance in the formation of above-mentioned water smoke or frost. Or when the temperature is too low, the hot end heats the transparent window and heats and melts the formed ice; and the hot end is also connected with the shell in a heat conduction mode, so that the shell can be utilized to fully dissipate heat. The structure can simultaneously utilize the refrigerator to radiate the inside of the shell, and utilize the heat at the hot end of the refrigerator to deice or prevent icing.
Optionally, the defogging and heat dissipation module further comprises a humidity sensor, and the humidity sensor is fixed at the cold end of the refrigerator.
Optionally, the defogging and heat dissipation module further comprises a fixing screw; the refrigerator comprises a vertical part extending along the inner wall of the shell, and the cold end is formed on the surface of the vertical part, which faces away from the inner wall of the shell; the fixing screw penetrates through the humidity sensor and the vertical part in sequence and is fixed with the shell.
Optionally, the thickness of the transparent window is smaller than that of the shell so as to form a first step surface with the shell; and a second step surface is formed on the hot end and correspondingly contacted with the first step surface.
Optionally, the refrigerator further comprises a horizontal part vertically connected to the vertical part; the second step surface comprises a first surface, a second surface and a third surface, the first surface is a surface formed in the vertical part and far away from the cold end, the second surface is a surface formed in the horizontal part and far away from the cold end, and the third surface is a surface in the horizontal part and connecting the first surface and the second surface; the first surface is in contact with the surface of the transparent window parallel to the shell, the second surface is in contact with the transparent window, and the third surface is in contact with the surface of the transparent window perpendicular to the shell.
Optionally, the housing further includes a vertical side wall perpendicular to the transparent window, and an end surface of the vertical portion, which is away from the horizontal portion in the length direction, is in contact with the vertical side wall.
Optionally, the defogging and heat dissipation module further comprises a controller and an alarm; and the controller is used for controlling the alarm to give an alarm when the humidity sensor monitors that the humidity change value of the cold end in unit time is greater than a preset value after the refrigerator is started for a set time.
Optionally, the controller is further configured to turn on the refrigerator, the humidity sensor, and the alarm at regular times.
Optionally, the refrigerator is a semiconductor refrigerator.
Optionally, the casing includes along axial fixedly connected's protecgulum, well section of thick bamboo and back lid in proper order, transparent window is located the protecgulum, the refrigerator is fixed in the protecgulum is towards the surface of well section of thick bamboo.
In a second aspect, a camera, which may be a thermal imaging camera, is provided, which includes the defogging and heat dissipation module according to any one of the above aspects.
Compared with the prior art, the advantages of the camera and the defogging and radiating module are the same, and are not described again.
Drawings
Fig. 1 is a perspective view of a camera provided in an embodiment of the present application;
FIG. 2 is a schematic view showing an internal structure of a front cover portion in FIG. 1;
FIG. 3 shows a cross-sectional view of the front cover portion of FIG. 1;
fig. 4 shows a flow chart of the operation of the camera shown in fig. 1.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
With reference to fig. 1 to 4:
the defogging heat dissipation module that this application embodiment provided includes: a housing 5 and a refrigerator 3; refrigerator 3 is located casing 5, and refrigerator 3 has cold junction S1 and hot junction S2, and casing 5 is equipped with transparent window 4, and hot junction S2 is connected with transparent window 4 and casing 5 heat conduction respectively.
In above-mentioned defogging heat dissipation module, refrigerator 3 absorbs near cold junction S1 heat and conducts to hot junction S2 to conduct to transparent window 4, on the one hand, in time distribute away the inside heat of casing 5 through transparent window 4, on the other hand, no matter cold junction S1 refrigeration or outside low temperature environment all cause transparent window 4 to go up the condensation and form water smoke or frost easily, through heating transparent window 4, can prevent the normal work that camera was influenced in the formation of above-mentioned water smoke or frost in advance. Or when the temperature is too low, the hot end S2 heats the transparent window 4 and heats and melts the formed ice. The structure can simultaneously utilize the refrigerator 3 to radiate the inside of the shell 5, and utilize the heat of the hot end S2 of the refrigerator 3 to deice or prevent icing. Hot junction S2 still is connected with casing 5 heat conduction, and casing 5 specifically is the metal material, and the radiating effect is good, and refrigerator 3 absorbs the heat conduction near cold junction S1 to hot junction S2, can distribute away through metal material' S casing 5 fast.
In a specific embodiment, the defogging and heat dissipating module further includes a humidity sensor 1, and the humidity sensor 1 is fixed to the cold end S1 of the refrigerator 3. Because of cold junction S1 refrigeration, can make near the moisture condensation of cold junction S1, humidity increases, can monitor near the humidity variation of cold junction S1 at any time through humidity transducer 1.
Specifically, the defogging and heat dissipation module further comprises a fixing screw 2; the refrigerator 3 includes a vertical portion 31 extending along the inner wall of the casing 5, and the cold end S1 is formed on a surface of the vertical portion 31 facing away from the inner wall of the casing 5; the fixing screw 2 penetrates the humidity sensor 1 and the vertical portion 31 in this order, and is fixed to the housing 5. The fixing screw 2 connects the humidity sensor 1 and the vertical portion 31 at a time, simplifying the assembly process. And the space enclosed by the shell 5 is fully utilized.
In a specific embodiment, the thickness of the transparent window 4 is smaller than that of the housing 5, so as to form a first step surface with the housing 5, specifically, the edge of the transparent window 4 is embedded in a groove of the inner wall of the hollow structure of the housing 5, and the transparent window 4 is recessed relative to the housing inside the housing 5; the hot end S2 forms a second step surface which is correspondingly contacted with the first step surface, the contact surface refers to the thickened black line M, and the matching of the first step surface and the second step surface increases the total contact area of the refrigerator 3 and the shell and the transparent window 4, thereby facilitating heat exchange and timely radiating heat from the hot end S2.
The first step surface and the second step surface may be formed in various ways as long as the contact area can be increased, for example, a protrusion may be formed on one surface of the housing 5 and the hot end S2, and a groove matched with the protrusion may be formed on the other surface of the housing and the hot end S2, so that heat dissipation may be increased; in another specific embodiment, the refrigerator 3 further includes a horizontal portion 32 vertically connected to the vertical portion 31 to form an L-shaped structure; the second step surface includes a first surface S21, a second surface S22 and a third surface S23, the first surface S21 being a surface formed in the vertical portion 31 away from the cold end S1, the second surface S22 being a surface formed in the horizontal portion 32 away from the cold end S1, the third surface S23 being a surface of the horizontal portion 32 connecting the first surface S21 and the second surface S22; the first surface S21 is in contact with the surface of the housing 5 parallel to the transparent window 4, the second surface S22 is in contact with the transparent window 4, and the third surface S23 is in contact with the surface of the housing 5 perpendicular to the transparent window 4. The L-shaped structure of the refrigerator 3 is simple to process, and forms a second step surface that increases the heat dissipation area, and a flat surface cold end S1 that facilitates the installation of the humidity sensor 1. Moreover, the horizontal portion 32 is installed at an included angle formed by the inner walls of the hollow structures of the transparent window 4 and the housing 5, so that the edge position of the transparent window 4 can be reinforced by the horizontal portion 32, and the transparent window 4 is prevented from falling off or the edge position is prevented from being broken.
In a specific embodiment, the housing 5 further includes a vertical sidewall 511 perpendicular to the transparent window 4, and the end surface S3 of the vertical portion 31 away from the horizontal portion 32 in the length direction is in contact with the vertical sidewall 511, so that the vertical portion and the horizontal portion abut against each other, thereby preventing the refrigerator 3 from deflecting relative to the housing 5, and stabilizing the refrigerator 3 to a certain extent.
In a specific embodiment, the housing 5 includes a front cover 51, a middle cylinder 52 and a rear cover 53 fixedly connected in sequence along an axial direction to form a waterproof closed space, the transparent window 4 is located on the front cover 51, the refrigerator 3 is fixed on a surface of the front cover 51 facing the middle cylinder 52, and the front cover 51 is detachable, thereby also facilitating the detachment or installation of the humidity sensor 1 and the refrigerator 3. An imaging lens in the camera is used for viewing through the transparent window 4, and the hot end S2 can prevent the ice on the transparent window 4 from influencing the image quality.
The camera inevitably suffers from the factors of self material aging, fatigue of connecting fasteners, vibration loosening and the like in the working process to cause waterproof failure.
Thermal imaging cameras are expensive, and a large amount of property loss is caused by equipment damage and high maintenance cost caused by water inflow to a certain proportion of equipment. The waterproof performance of a camera installed for outdoor use lacks an effective detection means. The inside wet sensor that sets up of equipment is used for check out test set whether intake, and equipment intake can not play early warning in advance this moment, can not reach the purpose of timely maintenance, avoiding the loss. Under normal weather such as sunny weather, the moisture content in the camera is close to the moisture content in the environment, and the moisture sensor is difficult to detect the waterproof failure of the equipment in time; when the moisture content of the external environment temperature is large in rainy days, and external water vapor enters the camera more, although the humidity sensor detects out abnormal humidity, the water vapor in the camera easily damages components in the camera at the moment, and equipment maintenance is difficult in rainy days.
In a specific embodiment, the defogging and heat dissipating module further comprises a controller and an alarm; the refrigerator 3 and the humidity sensor 1 are positioned in the shell 5; the controller is used for controlling the alarm to give an alarm when the humidity sensor 1 monitors that the humidity change value A1 of the cold end S1 in unit time is greater than a preset value A after the refrigerator 3 is started for a set time t, wherein the alarm can be a sound alarm, a vibration alarm or an alarm using a picture displayed by a display screen as an alarm signal.
When the shell 5 has good waterproof performance, the interaction amount of the gas inside and outside the shell 5 is small, water vapor mainly comes from the gas in the internal space of the shell 5 and is carried by the gas, after the refrigerator 3 is started for a set time t, the humidity change value A1 of condensed water in unit time is far smaller than a preset value A (also called a humidity change threshold value), and an alarm cannot give an alarm; when the waterproof performance of the shell 5 is greatly reduced or even fails, the temperature inside the shell 5 is far higher than that of ambient gas, convection occurs between the gas inside and the gas outside the shell 5, the interaction amount is greatly improved, moisture in the shell 5 is condensed at the cold end S1 of the refrigerator 3, the convective air is continuously condensed near the humidity sensor 1, and the humidity is increased; and when the change value A1 of the humidity of the condensed water in unit time is greater than the preset value A, the alarm gives an alarm to remind a worker of timely maintaining the waterproof failure product.
According to the scheme, different waterproof performance test standards are set by adjusting the parameters of the humidity sensor. The internal and external gas flow channels are formed due to aging of self materials and fatigue or vibration loosening of connecting fasteners, and the like, so that possibility is provided for detecting the waterproof performance of the condensate water. Even in a clear weather, since gas exchange constantly occurs inside and outside the housing 5, the waterproof performance failure detection can be performed. In a specific embodiment, the controller is further configured to turn on the refrigerator 3, the humidity sensor 1 and the alarm at regular time, so that the defogging and heat dissipating module can self-check whether the waterproof performance is good at regular time, and the trouble of manual frequent inspection is avoided. After the refrigerator 3 is started, the fan can be used to blow the end S1 to assist the heat dissipation of the device.
Utilize above-mentioned defogging heat dissipation module, can realize simultaneously the heat dissipation to the 5 inner spaces of casing, to the removal water smoke or the deicing of transparent window 4, detect the water tightness in the space that the casing 5 encloses to and, the refrigerator 3 and humidity transducer 1 of being convenient for once only are installed fixedly with casing 5, save casing 5 inner space.
Based on the same inventive concept, the embodiment of the present application further provides a camera, which may be a thermal imaging camera, and includes the defogging and heat dissipation module provided in the above embodiment.
Wherein, refrigerator 3 absorbs the heat conduction to hot junction S2 near cold junction S1 to conduct to transparent window 4, on the one hand, in time distributes away the inside heat of casing 5 through transparent window 4, and on the other hand, no matter cold junction S1 refrigeration or outside low temperature environment all cause transparent window 4 to go up the condensation and form water smoke or frost easily, through heating transparent window 4, can prevent in advance that the formation of above-mentioned water smoke or frost influences the normal work of camera. Or when the temperature is too low, the hot end S2 heats the transparent window 4 and heats and melts the formed ice. The structure can simultaneously utilize the refrigerator 3 to radiate the inside of the shell 5, and utilize the heat of the hot end S2 of the refrigerator 3 to deice or prevent icing.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (11)
1. A defogging and heat dissipation module is characterized by comprising: a housing and a refrigerator; the refrigerator is positioned in the shell and is provided with a cold end and a hot end, the shell is provided with a transparent window, and the hot end is respectively in heat conduction connection with the transparent window and the shell.
2. The defogging and heat dissipating module of claim 1 further comprising a humidity sensor affixed to the cold end of the refrigerator.
3. The defogging and heat dissipating module according to claim 2, wherein the defogging and heat dissipating module further comprises a fixing screw;
the refrigerator comprises a vertical part extending along the inner wall of the shell, and the cold end is formed on the surface of the vertical part, which faces away from the inner wall of the shell;
the fixing screw penetrates through the humidity sensor and the vertical part in sequence and is fixed with the shell.
4. The module as set forth in claim 3, wherein the thickness of the transparent window is smaller than the thickness of the housing to form a first step surface with the housing;
and a second step surface is formed on the hot end and correspondingly contacted with the first step surface.
5. The defogging and heat dissipating module according to claim 4, wherein the refrigerator further comprises a horizontal portion vertically connected to the vertical portion;
the second step surface comprises a first surface, a second surface and a third surface, the first surface is a surface formed in the vertical part far away from the cold end, the second surface is a surface formed in the horizontal part far away from the cold end, and the third surface is a surface in the horizontal part connecting the first surface and the second surface;
the first surface is in contact with the surface of the shell parallel to the transparent window, the second surface is in contact with the transparent window, and the third surface is in contact with the surface of the shell perpendicular to the transparent window.
6. The module as claimed in claim 5, wherein the housing further comprises a vertical sidewall perpendicular to the transparent window, and the vertical portion is in contact with the vertical sidewall at an end surface of the vertical portion away from the horizontal portion in the longitudinal direction.
7. The defogging and heat dissipating module of claim 2 further comprising a controller and an alarm;
and the controller is used for controlling the alarm to give an alarm when the humidity sensor monitors that the humidity change value of the cold end in unit time is greater than a preset value after the refrigerator is started for a set time.
8. The defogging and heat dissipating module according to claim 7, wherein said controller is further configured to periodically turn on said refrigerator, said humidity sensor and said alarm.
9. The defogging and heat dissipating module of claim 1, wherein the refrigerator is a semiconductor refrigerator.
10. The module as claimed in any one of claims 1 to 9, wherein the housing includes a front cover, a middle cylinder and a rear cover fixedly connected in sequence along an axial direction, the transparent window is located on the front cover, and the refrigerator is fixed on a surface of the front cover facing the middle cylinder.
11. A camera comprising the defogging and heat dissipation module according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211311664.0A CN115942091A (en) | 2022-10-25 | 2022-10-25 | Defogging heat dissipation module and camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211311664.0A CN115942091A (en) | 2022-10-25 | 2022-10-25 | Defogging heat dissipation module and camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115942091A true CN115942091A (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211311664.0A Pending CN115942091A (en) | 2022-10-25 | 2022-10-25 | Defogging heat dissipation module and camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115942091A (en) |
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2022
- 2022-10-25 CN CN202211311664.0A patent/CN115942091A/en active Pending
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