Internal temperature automatic regulating device resistant to high-low temperature impact

Abstract

The application discloses an internal temperature automatic adjusting device resistant to high and low temperature impact, comprising: an inner wall; a heat dissipation fin, which is constructed on one side of the inner wall; an air layer, which is arranged between the inner wall and the heat dissipation fin; and two-stage adjusting hydraulic bolts, which are arranged to be extended and retracted between a camera inner cavity and the inner wall along with temperature changes, and the two-stage adjusting hydraulic bolts are in an extended state to extrude the inner wall along the thickness direction of the air layer to the heat dissipation fin. Thus, the camera heat preservation and heat dissipation problems are solved, the camera can automatically perceive internal temperature changes, and the camera internal temperature can be automatically adjusted along with temperature changes, so that the camera has the advantages of good high-temperature heat dissipation effect and good low-temperature heat preservation effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic heat dissipation, in particular to an internal temperature automatic regulating device resistant to high and low temperature impact. BACKGROUND

[0002] At present, most cameras are susceptible to external temperature interference during operation in some occasions, which requires the camera to have good high-temperature heat dissipation effect and good low-temperature heat preservation effect. However, due to the size of the camera body, the heat dissipation area is small and the heat dissipation capacity is poor, so that the traditional camera shell structure cannot meet the requirements of heat dissipation and heat preservation. In view of the problems existing in the prior art, the internal temperature automatic regulating device resistant to high and low temperature impact is provided. SUMMARY

[0003] In order to avoid and overcome the technical problems existing in the prior art, the internal temperature automatic regulating device resistant to high and low temperature impact is provided, which solves the problems of camera heat preservation and heat dissipation, enables the camera to automatically perceive the change of internal temperature, and automatically adjusts the internal temperature of the camera with the change of temperature, so that the camera has the advantages of good high-temperature heat dissipation effect and good low-temperature heat preservation effect.

[0004] In order to achieve the above purpose, the internal temperature automatic regulating device resistant to high and low temperature impact comprises:

[0005] An inner wall;

[0006] A heat dissipation fin, which is constructed on one side of the inner wall;

[0007] An air sandwich layer, which is arranged between the inner wall and the heat dissipation fin;

[0008] A two-stage regulating hydraulic bolt, which is arranged to stretch between the camera inner cavity and the inner wall with temperature, and the two-stage regulating hydraulic bolt is in an extended state to press the inner wall along the thickness direction of the air sandwich layer to the heat dissipation fin. Thus, the problems of camera heat preservation and heat dissipation are solved, the camera can automatically perceive the change of internal temperature, and automatically adjust the internal temperature of the camera with the change of temperature, so that the camera has the advantages of good high-temperature heat dissipation effect and good low-temperature heat preservation effect.

[0009] As a further optimization of the above scheme, the two-stage adjusting hydraulic bolt is axially slidably connected with a sliding partition plate, which divides the inner cavity of the two-stage adjusting hydraulic bolt into a first cavity and a second cavity. The first cavity is filled with a thermal expansion medium that expands with rising temperature. The second cavity is internally arranged with a fixed member fixed to the inner wall and a spring connected to the sliding partition plate and the fixed member. As a further specific embodiment of the two-stage adjusting hydraulic bolt, the purpose of adjusting the air sandwich thickness by the extrusion action of the inner wall with temperature change is effectively achieved through the characteristics of the thermal expansion medium with temperature change. Specifically:

[0010] When the temperature is high, the upper thermal expansion medium expands, the pressure becomes larger, the spring is compressed, the inner wall is tightly attached to the heat dissipation fins, and the heat dissipation efficiency is improved.

[0011] When the temperature is low, the upper thermal expansion medium contracts, the pressure becomes smaller, the spring is elongated, the inner wall is separated from the heat dissipation fins, and the heat dissipation efficiency is reduced.

[0012] As a further optimization of the above scheme, the thermal expansion medium is anhydrous ethanol. When the temperature is 20°C, the linear expansion coefficient of ethanol is 0.00109 m / K. If the temperature rises from -40°C to 60°C, the ethanol expands by 109 mm / m (without considering the change of the linear expansion coefficient caused by temperature change, as the change is small). Therefore, anhydrous ethanol is an excellent thermal expansion medium for the present application.

[0013] As a further optimization of the above scheme, the air sandwich is 2 mm. When the air sandwich is 2 mm, the heat preservation effect of the camera inner cavity in the low temperature state is better.

[0014] As a further optimization of the above scheme, a sealing ring is arranged on the outer circumferential surface of the sliding partition plate to ensure that the anhydrous ethanol is sealed in the first cavity.

[0015] As a further optimization of the above scheme, an annular hole is arranged in the second cavity, and the projection of the annular hole in the axial direction of the fixed member does not intersect with the fixed member. A fixed block is arranged on the annular hole, and a blowing air bag connected to the sliding partition plate and the fixed block is arranged to blow air in the axial direction of the two-stage adjusting hydraulic bolt. The output end of the blowing air bag extends to the inner wall through the fixed block. As a complementary scheme of the above scheme, during the movement of the sliding partition plate due to temperature change, in the warming state, the sliding partition plate extrudes the blowing air bag. Since the output end of the blowing air bag is staggered with the sliding partition plate, the blowing air bag directly blows air to the inner wall, and at the same time, it assists the heat dissipation fins to cool down.

[0016] As a further optimization of the above scheme, the fixed block and the blowing air bag constitute a blowing assembly. There are at least two blowing assemblies arranged in an equidistant annular array. Multiple blowing assemblies are arranged to better achieve the blowing and heat dissipation work of the camera inner cavity.

[0017] As a further optimization of the above scheme, a limiting baffle is arranged in the annular hole, the distance between the limiting baffle and the sliding partition plate is smaller than the distance between the fixed block and the sliding partition plate, the limiting baffle can limit the axial position of the sliding partition plate, and prevent the sliding partition plate from moving excessively and causing the inner wall to be damaged or the heat dissipation fins to be damaged.

[0018] As a further optimization of the above scheme, an electric fan for blowing air to the inner wall is arranged on the sliding partition plate, the electric fan is arranged between the air blowing bag and the sliding partition plate, and the electric fan is located on the annular hole; the control assembly controls the electric fan to start when the inner wall contacts the heat dissipation fins; the electric fan is arranged to start when the inner wall contacts the heat dissipation fins, that is, when the camera cavity reaches a certain temperature, to assist the heat dissipation fins in blowing air for heat dissipation, so as to quickly dissipate heat from the camera cavity in a high-temperature state.

[0019] As a further optimization of the above scheme, the control assembly comprises a first conductive sheet and a second conductive sheet arranged in the axial direction, the second conductive sheet is arranged on the side of the limiting baffle facing the sliding partition plate, and the power supply is arranged on the side of the second conductive sheet away from the first conductive sheet; the electric fan is powered on after the first conductive sheet and the second conductive sheet are in contact; as a further supplementary scheme of the above scheme, the control assembly uses the limiting baffle as a support, and by arranging the second conductive sheet on the limiting baffle, it is ensured that the electric fan starts when the thickness of the air layer is at a limit, so as to ensure that the camera cavity is blown and cooled in a high-temperature state, thereby further improving the heat dissipation effect of the camera.

[0020] The internal temperature automatic adjusting device of the present application has the following advantages:

[0021] 1. The present application designs two-stage adjusting hydraulic bolts in the camera cavity, uses the function of the two-stage adjusting hydraulic bolts in the extended state to press the inner wall to the heat dissipation fins in the thickness direction of the air layer, realizes the purpose of changing the thickness of the air layer with temperature, realizes the purpose of closely attaching the inner wall to the heat dissipation fins in a high-temperature state to improve the heat dissipation efficiency, realizes the purpose of separating the inner wall from the heat dissipation fins in a low-temperature state to reduce the heat dissipation efficiency, solves the problems of camera heat preservation and heat dissipation, makes the camera automatically sense the internal temperature change and automatically adjust the internal temperature of the camera with temperature change, and makes the camera have the advantages of good high-temperature heat dissipation effect and good low-temperature heat preservation effect.

[0022] 2. For the specific structure of the two-stage adjusting hydraulic bolts, the structure of the thermal expansion medium pushing the sliding partition plate to move is more conducive to pressing the inner wall to the heat dissipation fins, and the spring is arranged to have the functions of buffering and rebounding the sliding partition plate, so that the structure of the present application is more reasonable.

[0023] 3. The arrangement of the air blowing assembly realizes the air blowing heat dissipation for the camera inner cavity, the sliding partition plate which slides along the axis of the two-stage adjusting hydraulic bolt realizes the air suction or blowing action of the air blowing air bag during the sliding process, and realizes the air blowing heat dissipation function in the high temperature state.

[0024] 4. The internal structure of the two-stage adjusting hydraulic bolt is further improved, the electric fan and the control assembly are arranged in the inner cavity of the two-stage adjusting hydraulic bolt, after the temperature of the camera reaches a certain temperature, secondary air blowing is carried out through the electric fan, the secondary air blowing cooling of the camera inner cavity can be realized, and compared with the air blowing cooling of the air blowing assembly, the secondary cooling action is continuous air blowing cooling after the temperature is greater than a certain temperature, so that the cooling effect of the camera inner cavity in the high temperature state is ensured.

[0025] Specific embodiments of the application are disclosed in detail below with reference to the following description and drawings, indicating the principles of the application can be used, it should be understood that the embodiments of the application are not limited in scope, and the embodiments of the application include many changes, modifications and equivalents within the scope of the appended claims and clauses. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Structure diagram of internal temperature automatic adjusting device resistant to high and low temperature impact;

[0027] Figure 2 Structure diagram of two-stage adjusting hydraulic bolt in the application;

[0028] Figure 3 Temperature comparison diagram of air sandwich layer in the application;

[0029] Figure 4 Structure diagram of air blowing air bag in the application Figure 1 Enlarged structure diagram of A in the application;

[0030] Figure 5 Structure diagram of annular hole in the application;

[0031] Figure 6 Structure diagram of air blowing air bag in the application;

[0032] Figure 7 Structure diagram of air blowing air bag in the application Figure 6 Enlarged structure diagram of B in the application.

[0033] In the figure: 1, inner wall; 2, heat dissipation fin; 3, two-stage adjusting hydraulic bolt; 4, thermal expansion medium; 5, spring; 6, sealing ring; 7, fixed block; 8, limiting baffle; 9, electric fan; 31, annular hole; 71, air blowing air bag; 91, first conductive sheet; 92, second conductive sheet; 93, power supply. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of the invention.

[0035] It should be noted that when an element is referred to as "set on" or "provided with" another element, it can be directly on the other element or there may be an intermediate element. When an element is referred to as "connected to" or "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. "Fixed connection" means fixed connection. There are many ways of fixed connection, which are not within the scope of protection of this document. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in the specification herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] Please refer to the instruction manual appendix. Figures 1-7 The present invention provides a technical solution: an internal temperature automatic regulation device that can withstand high and low temperature shocks.

[0038] Depend on Figure 2 It is known that, since air is a poor conductor of heat, the heat dissipation efficiency is different when the heat dissipation fins are in close contact with the inner wall and when there is an air gap.

[0039] According to a first preferred embodiment of the present invention, reference is made to Figure 1 An air gap is designed between the inner wall 1 and the heat dissipation fins 2. Two-stage adjustable hydraulic bolts 3 are designed on the side of the inner wall 1 facing away from the heat dissipation fins 2. At high temperatures, these two-stage adjustable hydraulic bolts 3 compress the inner wall 1 towards the heat dissipation fins 2, shortening the thickness of the air gap and gradually bringing the inner wall 1 into contact with the heat dissipation fins 2, thus improving heat dissipation efficiency. At low temperatures, these two-stage adjustable hydraulic bolts 3 separate the inner wall 1 from the heat dissipation fins 2, resulting in a certain thickness of the air gap and reducing heat dissipation efficiency. Therefore, this invention possesses the advantages of high-efficiency heat dissipation at high temperatures and heat preservation at low temperatures.

[0040] In some examples, refer to Figure 3 and Figure 4 The air gap is 1-5mm, preferably 2mm in this example.

[0041] In the present embodiment, reference is made to Figure 2 The two-stage regulating hydraulic bolt 3 that changes with temperature is one of the cores of the present application, and the following will discuss the two-stage regulating hydraulic bolt in detail: Figure 3

[0042] The two-stage regulating hydraulic bolt 3 is connected with a sliding partition plate in the axial direction, the sliding partition plate divides the inner cavity of the two-stage regulating hydraulic bolt 3 into a first cavity and a second cavity, the first cavity is filled with a thermal expansion medium 4 that expands with the increase of temperature, and the second cavity is internally arranged with a fixing member fixed on the inner wall and a spring 5 connected to the sliding partition plate and the fixing member.

[0043] When the temperature is high, the thermal expansion medium 4 above expands, the pressure becomes large, the spring 5 is compressed, the inner wall 1 is tightly attached to the heat dissipation fins 2, and the heat dissipation efficiency is improved.

[0044] When the temperature is low, the thermal expansion medium 4 above shrinks, the pressure becomes small, the spring 5 is elongated, the inner wall 1 is separated from the heat dissipation fins 2, and the heat dissipation efficiency is reduced.

[0045] In some examples, the thermal expansion medium 4 above is anhydrous ethanol, when the temperature is 20℃, the linear expansion coefficient of ethanol is 0.00109m / K, if the temperature rises from-40℃ to 60℃, the ethanol expands by 109mm / m (not considering the change of the linear expansion coefficient caused by temperature change, because the change is small).

[0046] Since the anhydrous ethanol above is built into the two-stage regulating hydraulic bolt 3, it can automatically sense the internal temperature change, when the internal temperature is high, the heat dissipation efficiency is improved, when the internal temperature is low, the heat dissipation efficiency is reduced and the heat preservation effect is enhanced, on this basis, a high-low temperature device can be used to package the two-stage regulating hydraulic bolt 3 at a specific temperature, and the wall separation temperature is the packaging temperature.

[0047] Further, the heat-conducting silicone grease can be coated between the heat dissipation fins 2 and the inner wall 1, which increases the contact area between the heat dissipation fins 2 and the inner wall 1.

[0048] As a supplementary solution to the above example, the sealing ring 6 is arranged on the outer circumferential surface of the sliding partition plate to achieve the sealing effect of the anhydrous ethanol.

[0049] According to the second embodiment of the present application, reference is made to Figure 5 and Figure 6 On the basis of ensuring the internal structure of the two-stage regulating hydraulic bolt 3 in the first embodiment, the following improvements are made:

[0050] ​The annular hole 31 is arranged in the second cavity, and the projection of the annular hole 31 along the axis of the fixing member has no intersection with the fixing member. The fixing block 7 is arranged on the annular hole 31, and the fixing block 7 is connected with the sliding partition plate through a blowing air bag 71 which blows air along the axial direction of the two-stage adjusting hydraulic bolt 3. The output end of the blowing air bag 71 extends to the inner wall 1 through the fixing block 7. The fixing block 7 and the blowing air bag 71 form a blowing assembly, and there are at least two blowing assemblies arranged in an annular array at equal intervals.

[0051] The blowing assembly has a blowing and heat dissipation function during the sliding of the sliding partition plate, so as to further improve the heat dissipation effect of the camera in a high temperature state.

[0052] According to the third embodiment of the present application, the internal structure of the two-stage adjusting hydraulic bolt 3 in the second embodiment is further improved under the premise of ensuring the functions of the first embodiment and the second embodiment.

[0053] The limiting baffle 8 is arranged in the annular hole 31, and the distance between the limiting baffle 8 and the sliding partition plate is less than the distance between the fixing block 7 and the sliding partition plate. The limiting baffle 8 can limit the axial position of the sliding partition plate, so as to avoid excessive movement of the sliding partition plate and cause damage to the inner wall 1 or the heat dissipation fin 2.

[0054] According to the fourth embodiment of the present application, referring to Figure 7 The internal structure of the two-stage adjusting hydraulic bolt 3 in the third embodiment is further improved under the premise of ensuring the functions of the first embodiment, the second embodiment and the third embodiment.

[0055] The electric fan 9 blowing air to the inner wall 1 is arranged on the sliding partition plate. The electric fan 9 is arranged separately from the blowing air bag 71 and located on the annular hole 31. The control assembly controls the electric fan 9 to start when the inner wall 1 contacts the heat dissipation fin 2.

[0056] In some examples, the control assembly includes a first conductive sheet 91 and a second conductive sheet 92 arranged along the axial direction. The second conductive sheet 92 is fixed to the inner wall of the two-stage adjusting hydraulic bolt 3. The power supply 93 is arranged on the side of the second conductive sheet 92 away from the first conductive sheet 91. The electric fan 9 is powered after the first conductive sheet 91 and the second conductive sheet 92 are in contact. As a further supplement to the above-mentioned scheme, the control assembly uses the limiting baffle 8 as a support, and the second conductive sheet 92 is arranged on the limiting baffle 8. When the thickness of the air layer is at a limit value, the electric fan 9 starts to ensure that air is blown to the camera cavity in a high temperature state, thereby further improving the heat dissipation effect of the camera.

[0057] The preferred embodiments of the present application are merely used to explain the present application, not to limit the present application, any modification, equivalent replacement or improvement made in the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An internal temperature automatic regulating device resistant to high and low temperature shocks, characterized in that, The utility model relates to a heat dissipation device for camera, comprising: an inner wall; a heat dissipation fin constructed on one side of the inner wall; an air sandwich layer disposed between the inner wall and the heat dissipation fin; a two-stage adjusting hydraulic bolt configured to extend and retract between the inner cavity of the camera and the inner wall along with temperature, the two-stage adjusting hydraulic bolt in the extended state extruding the inner wall along the thickness direction of the air sandwich layer towards the heat dissipation fin; a sliding partition plate axially slidingly connected to the two-stage adjusting hydraulic bolt, the sliding partition plate dividing the inner cavity of the two-stage adjusting hydraulic bolt into a first cavity and a second cavity, the first cavity filled with a thermal expansion medium that expands with rising temperature, and the second cavity internally arranged with a fixed part fixed to the inner wall and a spring connected to the sliding partition plate and the fixed part.

2. The internal temperature self-regulating device resistant to high and low temperature shocks according to claim 1, characterized in that: The thermal expansion medium is anhydrous ethanol.

3. The internal temperature self-regulating device resistant to high and low temperature shocks according to claim 2, characterized in that: The air sandwich layer is 2mm.

4. The internal temperature self-regulating device resistant to high and low temperature shocks according to claim 3, characterized in that: A sealing ring is arranged on the outer circumferential surface of the sliding partition plate.

5. The internal temperature self-regulating device resistant to high and low temperature shocks according to claim 4, characterized in that: A ring-shaped hole is arranged in the second cavity, and the projection of the ring-shaped hole along the axial direction of the fixed part has no intersection with the fixed part, a fixed block is arranged on the ring-shaped hole, and a blowing air bag that blows air along the axial direction of the two-stage adjusting hydraulic bolt is connected between the fixed block and the sliding partition plate, the output end of the blowing air bag passes through the fixed block and extends towards the inner wall.

6. The internal temperature self-regulating device resistant to high and low temperature shocks according to claim 5, characterized in that: The fixed block and the blowing air bag constitute a blowing assembly, and there are at least two blowing assemblies arranged in an equidistant annular array.

7. The high and low temperature shock resistant internal temperature self-regulating device according to claim 6, characterized in that: A limiting baffle is arranged in the ring-shaped hole, and the distance between the limiting baffle and the sliding partition plate is less than the distance between the fixed block and the sliding partition plate.

8. The internal temperature self-regulating device resistant to high and low temperature shocks according to claim 7, characterized in that: An electric fan that blows air towards the inner wall is arranged on the sliding partition plate, the electric fan is arranged in an interval with the blowing air bag and located on the ring-shaped hole, and a control assembly controls the electric fan to start when the inner wall and the heat dissipation fin are in contact.

9. The internally temperature self-regulating device resistant to high and low temperature shocks according to claim 8, characterized in that: The control assembly comprises a first conductive sheet and a second conductive sheet arranged in the axial direction, the second conductive sheet is arranged on the side of the limiting baffle facing the sliding partition plate, a power supply is arranged on the side of the second conductive sheet away from the first conductive sheet, and the electric fan is powered on after the first conductive sheet and the second conductive sheet are in contact.

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