A high stability image acquisition device

Abstract

The present invention relates to a high-stability image acquisition device applied in the field of surveillance camera technology. When overheated, the air circulation aluminum tube is set to absorb the outside air in a concentrated manner and circulate it between the camera body and the outer cover shell in a dispersed manner, thereby greatly accelerating the air flow speed and realizing targeted heat dissipation, so that the stability of the image acquisition device is not easily affected by excessive heat. In addition, with the setting of the hole blocking strip and the temperature sensing strip, the temperature accumulation inside the camera body can be monitored over a long range. When the temperature is overheated, during the above-mentioned air circulation process, the hole blocking strip can also be separated from the camera body, so that the heat overflow long hole alternately appears in an open-closed state. Compared with the integral heat dissipation of the camera body in the prior art, the heat discharge efficiency of the camera body is greatly improved, the influence of heat on the stability of the camera body is reduced, and the quality of the acquired picture is improved.

Description

Technical Field

[0001] The present invention relates to a high-stability image acquisition device, in particular to a high-stability image acquisition device applied in the field of monitoring camera technology. Background Art

[0002] With the continuous development of information technology, real-time monitoring of scenes and real-time intelligent analysis of scene information through camera devices have become important means of intelligent image processing technology. Camera devices usually have a rotation function, which can obtain information from a large area of ​​the scene by rotating horizontally, comprehensively collect information in the scene, and dynamically track the shooting target.

[0003] Existing video cameras used for surveillance often work 24 hours a day. They are prone to overheating when working for a long time, especially when the external ambient temperature is high. The heat accumulation phenomenon is more obvious, which affects the stability of image acquisition and easily affects the image quality. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that long-term continuous work is likely to cause excessive heating, which affects the stability of image acquisition and easily affects the image quality.

[0005] To solve the above problems, the present invention provides a high-stability image acquisition device, including a mounting base plate with a control chip, a camera body and a connecting rod with both ends connected to the mounting base plate and the camera body respectively through electric rotating shafts, the upper end of the camera body is covered with an outer cover shell, two columns are connected between the outer cover shell and the upper end of the camera body, the outer cover shell does not contact the camera body, and a plurality of evenly distributed air circulation aluminum tubes are arranged between the two, the air circulation aluminum tube includes a tube body and two pressurized ball balls fixedly connected to the middle part of the tube body, a partition is fixedly connected to the middle part of the tube body, the partition is located between the two pressurized ball balls, a plurality of circulation air holes symmetrically distributed about the partition are drilled on the tube body, a plurality of circulation air holes are located at the mouth of the tube body with a one-way hole-shielding sheet fixedly connected thereto, and the connection parts of the plurality of one-way hole-shielding sheets with the tube body are all located on the side of the corresponding circulation air holes away from the pressurized ball balls.

[0006] In the above-mentioned high-stability image acquisition device, when overheating occurs, the air circulation aluminum tube is set to concentrate and absorb external air, and circulate it between the camera body and the outer cover shell in a dispersed manner, thereby greatly accelerating the air flow speed and achieving targeted heat dissipation, thereby making the stability of the image acquisition device less susceptible to excessive heat.

[0007] As a further improvement of the present application, a temperature sensor is installed in the middle of the upper end of the mounting base, the column is an electric push rod, and the extended end of the column is fixedly connected to the outer cover shell, and the electric push rod and the temperature sensor are both connected to the control chip signal.

[0008] As a further improvement of the present application, the cross-section of the pressurized ball is a hollow elliptical structure, and the pressurized ball is made of elastic material. The tube body faces the outer cover shell and is fixedly connected to the outer cover shell. The pressurized ball is in contact with the surface of the camera body. Multiple circulation air holes form a row, and the openings of the circulation air holes are all facing the surface of the camera body.

[0009] As a further improvement of the present application, the cross-section of the one-way hole-shielding plate is a broken line shape, and a section of the one-way hole-shielding plate that is not in contact with the tube body is inclined upward and is open, and the inclined portion of the one-way hole-shielding plate just corresponds to the mouth of the circulating air hole, and the area of ​​the inclined portion is larger than the area of ​​the mouth of the circulating air hole.

[0010] As another improvement of the present application, the middle part of the compressed air ball is fixedly connected to the outer cover shell, and a plurality of long heat overflow holes corresponding to a plurality of air circulation aluminum tubes are opened at the upper end of the camera body. The inside of the long heat overflow holes is matched with hole plugging strips, and the hole plugging strips are fixedly connected to the tube body. Two electric push rods are also fixedly connected between the tube body and the outer cover shell, and the extended ends of the electric push rods are connected to the tube body.

[0011] As another improved supplement of the present application, a plurality of circulating air holes are arranged in two rows, and the two rows of circulating air holes are symmetrical about the hole-blocking strip, the central axis of the circulating air holes intersects with the camera body, and the acute angle formed at the intersection is 30-60°.

[0012] As another improvement supplement of the present application, a laser transmitter and a laser receiver are respectively installed on both sides of the mouth of the heat overflow long hole facing the camera body, and the line connecting the midpoints of the two is parallel to the central axis of the camera body.

[0013] As another improvement supplement to the present application, a light passing groove is bored at one end of the hole blocking strip facing the camera body, the light passing groove is located in the camera body, and the connection line between the laser transmitter and the laser receiver passes through the light passing groove, a temperature sensitive strip is fixedly connected to the inner wall of the hole blocking strip away from the camera body, an electromagnetic sheet is electrically connected to the top of the hole blocking strip, the on and off of the electromagnetic sheet is controlled by a control chip, the temperature sensitive strip includes a heat-sensitive bag fixedly connected to the inner wall of the hole blocking strip and a transparent film fixedly connected to a section of the heat-sensitive bag close to the camera body, the heat-sensitive bag is filled with hot-melt filler, and the filling degree of the hot-melt filler in the heat-sensitive bag is 60-70%.

[0014] As another improved supplement of the present application, the transparent bottom film includes a plurality of bottom weight strips and flexible belts respectively fixedly connected between the plurality of bottom weight strips, the bottom weight strips are transparent magnetic structures, and the flexible belts are transparent flexible structures.

[0015] As another improvement supplement of the present application, the width of the thermal capsule is 1.5-2 times the width of the light-passing slot. When energized, the electromagnetic sheet generates magnetic attraction to the thermal capsule. When the camera body is not overheated, the hot-melt filler in the thermal capsule is in a solid state, and the transparent film does not overlap with the light-passing slot.

[0016] In summary, when overheating occurs, the setting of the air circulation aluminum tube can concentrate and absorb external air, and circulate it between the camera body and the outer cover shell in a dispersed manner, thereby greatly accelerating the air flow speed and achieving targeted heat dissipation, so that the stability of the image acquisition device is not easily affected by excessive heat. In addition, with the setting of the hole blocking strip and the temperature sensing strip, the temperature accumulation inside the camera body can be monitored over a longer range. When overheating occurs, during the above-mentioned air circulation process, the hole blocking strip can also be separated from the camera body, so that the heat overflow long hole alternates between an open and closed state. Compared with the integral heat dissipation of the camera body in the prior art, the heat dissipation efficiency of the camera body is greatly improved, the influence of heat on the stability of the camera body is reduced, and the quality of the acquired picture is improved at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of the first embodiment of the present application;

[0018] Figure 2 This is a three-dimensional view of the first embodiment of the present application when the outer cover shell is removed;

[0019] Figure 3 This is a side view of a camera body according to a first embodiment of the present application;

[0020] Figure 4 This is a three-dimensional diagram of a gas circulation aluminum tube according to a first embodiment of the present application;

[0021] Figure 5 This is a schematic diagram of a cross section of a gas circulation aluminum tube according to a first embodiment of the present application;

[0022] Figure 6 This is a schematic diagram of the circulation pores in different states according to the first embodiment of the present application;

[0023] Figure 7 This is a side view of the outer cover shell when the gas circulation aluminum tube is squeezed in the first embodiment of the present application;

[0024] Figure 8 This is a side view of a gas circulation aluminum tube according to a second embodiment of the present application;

[0025] Fig. 9 This is a side view of a camera body according to a second embodiment of the present application;

[0026] Fig.10This is a comparison diagram of the heat overflow long hole portion before and after overheating in the second embodiment of the present application;

[0027] Fig.11 This is a bottom perspective view of a hole plugging strip according to a second embodiment of the present application;

[0028] Fig.12 This is a comparison diagram of the side of the plugging strip before and after overheating in the second embodiment of the present application;

[0029] Fig.13 This is a diagram showing the change process of the transparent bottom film before and after overheating in the second embodiment of the present application;

[0030] Fig.14 This is a transverse cross-sectional view of a gas circulation aluminum tube according to a third embodiment of the present application.

[0031] Description of the numbers in the figure:

[0032] 1 installation base plate, 2 connecting rod, 3 camera body, 301 heat overflow long hole, 4 outer cover shell, 5 air circulation aluminum tube, 51 tube body, 52 pressure ball, 53 electric push rod, 501 circulation air hole, 502 one-way hole shielding sheet, 503 partition, 6 columns, 71 laser transmitter, 72 laser receiver, 8 blocking strip, 801 light groove, 91 thermal bag, 92 transparent film, 921 bottom pendant strip, 922 flexible belt. DETAILED DESCRIPTION

[0033] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0034] The first implementation method:

[0035] Figure 1-3 A high-stability image acquisition device is shown, including a mounting base plate 1 with a control chip, a camera body 3 and a connecting rod 2 with both ends connected to the mounting base plate 1 and the camera body 3 respectively through electric rotating shafts. The upper end of the camera body 3 is covered with an outer cover shell 4, and two columns 6 are connected between the outer cover shell 4 and the upper end of the camera body 3. The outer cover shell 4 does not contact the camera body 3, and a plurality of evenly distributed air circulation aluminum tubes 5 are provided therebetween. The air circulation aluminum tube 5 includes a tube body 51 and two pressurized air balls 52 fixedly connected to the middle of the tube body 51.

[0036] In this embodiment, a temperature sensor is installed in the middle of the upper end of the mounting base plate 1, the column 6 is an electric push rod, and the extended end of the column 6 is fixedly connected to the outer cover shell 4, the electric push rod and the temperature sensor are both connected to the control chip signal, when the temperature sensor detects that the temperature is too high, such as Figure 7The control chip can control the column 6 to shorten, thereby driving the outer cover shell 4 to approach the camera body 3, and then squeeze multiple air circulation aluminum tubes 5, so that the air in the compressed air ball 52 is discharged outward along the tube body 51, and then the column 6 is controlled to shorten, and the compressed air ball 52 gradually recovers. At this time, part of the outside air can be absorbed. In the process of controlling the continuous extension and shortening of the column 6, the outside air can be quickly circulated between the camera body 3 and the outer cover shell 4, greatly accelerating the air flow speed and accelerating the heat exchange efficiency, thereby accelerating the heat dissipation and reducing the occurrence of heat accumulation at the camera body 3, thereby effectively reducing the impact of overheating on the image quality obtained by this device.

[0037] The internal preset temperature threshold of the temperature sensor is 3-8° C. lower than the maximum limit temperature of the camera body 3 when the camera body 3 is in stable operation.

[0038] like Figure 4-5 A partition 503 is fixedly connected to the middle of the tube body 51, and the partition 503 is located between the two pressure balls 52. A plurality of circulation air holes 501 symmetrically distributed about the partition 503 are drilled on the tube body 51, and a one-way hole-shielding sheet 502 is fixedly connected to the mouth of the plurality of circulation air holes 501 located in the tube body 51. The connection between the plurality of one-way hole-shielding sheets 502 and the tube body 51 is located on the side of the corresponding circulation air hole 501 away from the pressure ball 52. The cross-section of the pressure ball 52 is a hollow elliptical structure, and the pressure ball 52 is made of elastic material. The tube body 51 faces the outer cover shell 4 and is fixedly connected to the outer cover shell 4. The pressure ball 52 contacts the surface of the camera body 3. The plurality of circulation air holes 501 form a row, and the mouths of the circulation air holes 501 are all facing the surface of the camera body 3. Figure 6 In the case of overheating, when the outer cover shell 4 squeezes the air circulation aluminum tube 5 to discharge the air inside, the discharged air can push the opening of the one-way hole-shielding sheet 502 to further expand it, and part of the air can overflow along the circulating air hole 501 and be directly sprayed toward the surface of the camera body 3, thereby achieving targeted heat dissipation of the camera body 3.

[0039] The cross section of the one-way hole shielding sheet 502 is in the shape of a broken line. Under normal circumstances without overheating, a section of the one-way hole shielding sheet 502 that is not in contact with the tube body 51 is tilted upward and is open. The tilted portion of the one-way hole shielding sheet 502 just corresponds to the mouth of the circulating air hole 501, and the area of ​​the tilted portion is larger than the area of ​​the mouth of the circulating air hole 501. Figure 6 In the case of overheating, when the column 6 is extended, the pressure ball 52 recovers and absorbs part of the external air, the air entering through the mouth of the tube body 51 can push the one-way hole-shielding sheet 502 to deform toward the circulating air hole 501 and cover the circulating air hole 501. At this time, the gas can be relatively concentrated toward the pressure ball 52.

[0040] In the above-mentioned high-stability image acquisition device, when overheating occurs, the air circulation aluminum tube 5 is arranged to absorb the outside air in a concentrated manner and circulate it between the camera body 3 and the outer cover shell 4 in a dispersed manner, thereby greatly accelerating the air flow speed and achieving targeted heat dissipation, thereby making the stability of the image acquisition device less susceptible to excessive heat.

[0041] The second implementation method:

[0042] Based on the first embodiment, this embodiment adds the hole blocking strip 8 and the temperature sensing strip related settings, and modifies some settings, as follows:

[0043] Figure 8-9 As shown, in this embodiment, the middle part of the compressed air ball 52 is fixedly connected to the outer cover shell 4, and a plurality of heat overflow long holes 301 corresponding to the plurality of gas circulation aluminum tubes 5 are drilled on the upper end of the camera body 3, and the inside of the heat overflow long hole 301 is matched with a hole blocking strip 8, and the hole blocking strip 8 is fixedly connected to the tube body 51. Two electric push rods 53 are also fixedly connected between the tube body 51 and the outer cover shell 4, and the extended end of the electric push rod 53 is connected to the tube body 51. The laser emitter 71 and the laser receiver are respectively installed on both sides of the mouth of the heat overflow long hole 301 facing the camera body 3. The receiver 72, and the line between the midpoints of the two is parallel to the central axis of the camera body 3. When overheated, the control chip can control the electric push rod 53 to continuously extend and shorten, so that the tube body 51 is continuously approaching and moving away from the camera body 3, thereby driving the hole blocking strip 8 to continuously overlap and separate from the heat overflow long hole 301, so that the mouth of the heat overflow long hole 301 can be continuously opened, thereby effectively accelerating the discharge of the hot air inside it, and significantly accelerating the speed of heat exchange between the inside and the outside, thereby effectively assisting the temperature of the device to quickly reduce its stability and image quality.

[0044] It is worth noting that the heat overflow hole 301 corresponds to the middle part of the outer cover shell 4, and the lateral span of the heat overflow hole 301 is not greater than 2 / 3 of the lateral span of the outer cover shell 4, so that when the mouth of the heat overflow hole 301 is opened, it is not easily exposed to the outside world directly, and the outer cover shell 4 can shield it to a certain extent, so that external impurities, rainwater, etc. are not easily caused to open and enter the camera body 3.

[0045] like Fig.10 , multiple circulation holes 501 form two rows, and the two rows of circulation holes 501 are symmetrical about the plugging strip 8, the central axis of the circulation hole 501 intersects with the camera body 3, and the acute angle formed at the intersection is 30-60°, so that the air ejected from the circulation hole 501 can blow on the surface of the camera body 3 with a wider radiation range, and the effect of accelerating heat dissipation is better.

[0046] like Figure 11-12, in the figure, a represents laser, and a light passing groove 801 is drilled at one end of the hole blocking strip 8 facing the camera body 3. The light passing groove 801 is located in the camera body 3, and the connection line between the laser emitter 71 and the laser receiver 72 passes through the light passing groove 801. A temperature-sensitive strip is fixedly connected to the inner wall of the hole blocking strip 8 away from the camera body 3, and an electromagnetic sheet is electrically connected to the top of the hole blocking strip 8. The on and off of the electromagnetic sheet is controlled by a control chip. The temperature-sensitive strip includes a heat-sensitive capsule 91 fixedly connected to the inner wall of the hole blocking strip 8 and a transparent bottom film 92 fixedly connected to a section of the heat-sensitive capsule 91 close to the camera body 3. The heat-sensitive capsule 91 is filled with hot-melt filler. The filling degree of the hot-melt filler of the heat-sensitive capsule 91 is 60-70%, and the hot-melt filler is a colored transparent hot-melt material. The hot-melt temperature of the same transparent hot-melt material is 3-8°C lower than the maximum limit temperature of the camera body 3 during stable operation. When it is not hot-melted, it is located above the light passing groove 801. At this time, the laser receiver 72 can directly receive the laser signal emitted by the laser emitter 71, and the data of the laser receiver 72 is the largest.

[0047] The width of the thermal capsule 91 is 1.5-2 times the width of the light-passing slot 801 . When energized, the electromagnetic sheet generates a magnetic attraction to the thermal capsule 91 . When the camera body 3 is not overheated, the hot-melt filler in the thermal capsule 91 is in a solid state, and the transparent film 92 does not overlap with the light-passing slot 801 .

[0048] like Fig.13 The transparent bottom film 92 includes a plurality of bottom sinker bars 921 and a flexible belt 922 respectively fixedly connected between the plurality of bottom sinker bars 921. The bottom sinker bars 921 are transparent magnetic structures, and the flexible belt 922 is a transparent flexible structure. When a lot of heat is accumulated in the camera body 3, the hot-melt filler corresponding to the higher heat position gradually melts, causing the corresponding bottom sinker bars 921 and the flexible belt 922 to collapse downward, so that the laser emitted by the laser transmitter 71 needs to penetrate part of the temperature-sensitive strips to reach the laser receiver 72, so that the data on it becomes smaller. As the heat accumulates, the hot-melt filler melts more and more, so that the amplitude of the temperature-sensitive strip that the laser needs to penetrate becomes larger and larger, so that the data on the laser receiver 72 becomes smaller and smaller. When it is reduced to below the threshold, the control chip controls the electric push rod 53 to continuously extend and retract to accelerate the airflow exchange inside and outside, so as to accelerate the heat exchange. Before controlling the electric push rod 53 to extend and retract, the electromagnetic sheet is controlled to be energized to absorb the plurality of bottom sinker bars 921 and move upward, thereby retracting into the hole-blocking strip 8, so that the temperature-sensitive strip that collapses downward is not easy to affect the exchange of airflow at the overflow long hole 301.

[0049] In addition, this embodiment monitors the air inside the camera body 3 through the temperature sensing strip, and its monitoring range is larger. Compared with the temperature sensor which can only monitor the temperature of its installation part, it has a better monitoring effect on whether there is overheating and heat accumulation in the camera body 3. In specific implementation, a suitable implementation method can be selected according to actual needs.

[0050] Meanwhile, when the control chip controls the electric push rod 53 to work, it generally works continuously for about 30 minutes. When the work is finished, the hole blocking strip 8 is just located in the heat overflow long hole 301 .

[0051] In summary, when overheating occurs, the air circulation aluminum tube 5 can be used to absorb external air in a concentrated manner and circulate it between the camera body 3 and the outer cover shell 4 in a dispersed manner, thereby greatly accelerating the air flow speed and achieving targeted heat dissipation, thereby making the stability of the image acquisition device less susceptible to excessive heat. In addition, with the setting of the hole blocking strip 8 and the temperature sensing strip, the temperature accumulation inside the camera body 3 can be monitored over a longer range. When overheating occurs, during the above-mentioned air circulation process, the hole blocking strip 8 can also be separated from the camera body 3, so that the heat overflow long hole 301 alternates between an open and closed state. Compared with the integrated heat dissipation of the camera body 3 in the prior art, the heat discharge efficiency of the camera body 3 is greatly improved, the influence of heat on the stability of the camera body 3 is reduced, and the quality of the acquired picture is improved.

[0052] The third implementation method:

[0053] The gas circulation aluminum tube 5 in the first and second embodiments is replaced, and the rest of the parts are consistent with the first or second embodiment.

[0054] like Fig.14 The tube body 51 is set to be sealed at both ends, and the internal and external gas exchange is performed only through the circulating air holes 501. In this setting, corresponding to the first embodiment, every 2-4 circulating air holes 501 form a group, and corresponding to the two rows of circulating air holes 501 in the second embodiment, every 4-8 form a group. Each group of circulating air holes 501 is separated by a partition 503, so that the interior of the tube body 51 is divided into multiple independent air cavities. At the same time, multiple pressure balls 52 are also set on the tube body 51, and are correspondingly connected to the multiple air cavities, so that when squeezed, the pressure ball 52 only controls the internal and external air exchange of the corresponding 2-4 circulating air holes 501, so that the speed of the air ejected from the circulating air holes 501 is faster, which has a better effect on accelerating the air flow between the camera body 3 and the outer cover shell 4.

[0055] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A high-stability image acquisition device, characterized in that: The invention comprises a mounting base plate (1) with a control chip, a camera body (3), and a connecting rod (2) whose two ends are respectively connected to the mounting base plate (1) and the camera body (3) through electric rotating shafts; the upper end of the camera body (3) is covered with an outer cover shell (4); two columns (6) are connected between the outer cover shell (4) and the upper end of the camera body (3); the outer cover shell (4) does not contact the camera body (3); and a plurality of evenly distributed air circulation aluminum tubes (5) are arranged between the two. The air circulation aluminum tube (5) comprises a tube body (51) and a tube body (52) fixedly connected to the tube body (53). 1) two pressurized air balls (52) in the middle, a partition (503) is fixedly connected to the middle of the tube body (51), the partition (503) is located between the two pressurized air balls (52), a plurality of circulation air holes (501) symmetrically distributed about the partition (503) are drilled on the tube body (51), a one-way hole-shielding sheet (502) is fixedly connected to the mouth of the plurality of circulation air holes (501) located in the tube body (51), and the connection points of the plurality of one-way hole-shielding sheets (502) and the tube body (51) are all located on the side of the corresponding circulation air holes (501) away from the pressurized air balls (52); The middle part of the pressure ball (52) is fixedly connected to the outer cover shell (4); the upper end of the camera body (3) is provided with a plurality of long heat overflow holes (301) respectively corresponding to the plurality of air circulation aluminum tubes (5); the inside of the long heat overflow holes (301) is matched with a hole blocking strip (8); the hole blocking strip (8) is fixedly connected to the tube body (51); two electric push rods (53) are also fixedly connected between the tube body (51) and the outer cover shell (4); the extended end of the electric push rod (53) is connected to the tube body (51); one end of the hole blocking strip (8) facing the inside of the camera body (3) is provided with a light passing groove (801); the light passing groove (801) is located at the camera body (51). The head body (3) is provided with a connection line between the laser emitter (71) and the laser receiver (72) passing through the optical slot (801). The inner wall of the hole blocking bar (8) away from the camera body (3) is fixedly connected with a temperature-sensitive bar. The top of the hole blocking bar (8) is electrically connected with an electromagnetic sheet. The on and off of the electromagnetic sheet is controlled by a control chip. The temperature-sensitive bar includes a heat-sensitive capsule (91) fixedly connected to the inner wall of the hole blocking bar (8) and a transparent bottom film (92) fixedly connected to a section of the heat-sensitive capsule (91) close to the camera body (3). The heat-sensitive capsule (91) is filled with a hot-melt filler. The filling degree of the hot-melt filler in the heat-sensitive capsule (91) is 60-70%.

2. A high stability image acquisition device according to claim 1, characterized in that: A temperature sensor is installed in the middle of the upper end of the mounting base plate (1); the column (6) is an electric push rod, and the extended end of the column (6) is fixedly connected to the outer cover shell (4); the electric push rod and the temperature sensor are both connected to the control chip signal.

3. A high stability image acquisition device according to claim 2, characterized in that: The cross-section of the pressure ball (52) is a hollow elliptical structure, and the pressure ball (52) is made of elastic material. The tube body (51) faces the outer cover shell (4) and is fixedly connected to the outer cover shell (4). The pressure ball (52) is in contact with the surface of the camera body (3). The plurality of circulation holes (501) form a row, and the mouths of the circulation holes (501) are all facing the surface of the camera body (3).

4. The high stability image acquisition device according to claim 3, characterized in that: The cross section of the one-way hole-shielding sheet (502) is in the shape of a broken line. A section of the one-way hole-shielding sheet (502) that is not in contact with the tube body (51) is inclined upward and is open. The inclined portion of the one-way hole-shielding sheet (502) just corresponds to the mouth of the circulation pore (501), and the area of ​​the inclined portion is larger than the area of ​​the mouth of the circulation pore (501).

5. The high stability image acquisition device according to claim 1, characterized in that: The plurality of circulating air holes (501) form two rows, and the two rows of circulating air holes (501) are symmetrical about the hole-blocking strip (8); the central axis of the circulating air holes (501) intersects with the camera body (3), and the acute angle formed at the intersection is 30-60°.

6. The high stability image acquisition device according to claim 5, characterized in that: A laser transmitter (71) and a laser receiver (72) are respectively installed on both sides of the opening of the heat spill hole (301) facing the camera body (3), and the line connecting the midpoints of the two is parallel to the central axis of the camera body (3).

7. The high stability image acquisition device according to claim 6, characterized in that: The transparent bottom film (92) comprises a plurality of bottom weight strips (921) and a flexible belt (922) respectively fixedly connected between the plurality of bottom weight strips (921); the bottom weight strips (921) are transparent magnetic structures, and the flexible belt (922) is a transparent flexible structure.

8. The high stability image acquisition device according to claim 7, characterized in that: The width of the thermal capsule (91) is 1.5-2 times the width of the light-passing slot (801). When energized, the electromagnetic sheet generates a magnetic attraction force on the thermal capsule (91). When the camera body (3) is not overheated, the hot-melt filler in the thermal capsule (91) is in a solid state, and the transparent film (92) does not overlap with the light-passing slot (801).

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