CN111427222B - Thermal protection device and camera - Google Patents
Thermal protection device and camera Download PDFInfo
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- CN111427222B CN111427222B CN201910021147.1A CN201910021147A CN111427222B CN 111427222 B CN111427222 B CN 111427222B CN 201910021147 A CN201910021147 A CN 201910021147A CN 111427222 B CN111427222 B CN 111427222B
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- heat
- protection device
- thermal protection
- heat dissipation
- heat dissipating
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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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- Aviation & Aerospace Engineering (AREA)
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Abstract
The invention relates to a thermal protection device and a camera. The electromagnet is connected into the circuit and exerts magnetic attraction force on the magnetic element when electrified. The thermistor is connected into the circuit and is connected with the electromagnet in series. The elastic element is connected to the heat dissipation mechanism and is used for applying a force far away from the electromagnet to the heat dissipation mechanism. The camera comprises a shell, a camera shooting assembly and the thermal protection device, wherein the camera shooting assembly is arranged in the shell, the camera shooting assembly comprises a heating element, a first heat dissipation element is abutted with the heating element, and a second heat dissipation element is abutted with the inner wall of the shell. When the power is off or the temperature is lower than a set value, the electromagnet does not have magnetic attraction, and the heat dissipation mechanism is far away from the electromagnet under the action of the elastic element, so that the heat dissipation is disconnected. The invention can radiate heat when the temperature of the camera is overhigh, and can automatically cut off the heat radiation when the power is off and the temperature is lower than a set value, thereby entering a heat preservation mode.
Description
Technical Field
The invention relates to a thermal protection device and a camera.
Background
As shown in fig. 1, the existing thermal protection device for a camera includes a first electromagnet 01, a second electromagnet 02, a thermal bridge 03, a sliding rod 04, a camera, and a hot end 05 and a cold end 06 disposed in the camera, where the thermal bridge 03 is mounted on the sliding rod 04 and can move along the sliding rod 04.
When the camera needs to radiate, the first electromagnet 01 is electrified, the second electromagnet 02 is powered off, the thermal bridge 03 moves towards the first electromagnet 01 until contacting with the hot end 05 and the cold end 06, the hot end 05 and the cold end 06 are connected, and the radiating process at the moment is as follows: the heat of hot junction 05 is passed through thermal bridge 03 and is transmitted to cold junction 06, and cold junction 06 passes to the casing of camera with the heat and dispels the heat.
When the camera does not need to dissipate heat, the first electromagnet 01 is powered off, meanwhile, the second electromagnet 02 is powered on, the thermal bridge 03 moves towards the second electromagnet 02, the thermal bridge 03 leaves the hot end 05 and the cold end 06, and the hot end 05 and the cold end 06 are disconnected and cannot dissipate heat.
The existing camera thermal protection device has the following problems: 1. it can only be used when it is powered on all the time. 2. The switch can be switched on and off only by receiving an instruction input from the outside, and is not intelligent.
Disclosure of Invention
The invention aims to provide an intelligent thermal protection device and a camera.
The technical scheme of the invention is as follows:
a thermal protection device comprising:
the heat dissipation mechanism is provided with a magnetic element;
a circuit;
an electromagnet connected to the circuit and applying a magnetic attraction force to the magnetic element when energized;
a thermistor connected into the circuit and in series with the electromagnet;
and the elastic element is connected to the heat dissipation mechanism and is used for applying a force far away from the electromagnet to the heat dissipation mechanism.
Preferably, in the above thermal protection device, the heat dissipation mechanism includes a first heat dissipation element and a second heat dissipation element, and the first heat dissipation element is movably connected to the second heat dissipation element.
Preferably, in the above thermal protection device, the magnetic element is mounted on the second heat dissipation element.
Preferably, in the above thermal protection device, the elastic element is a tension spring, one end of the tension spring is connected to the first heat dissipation element, and the other end of the tension spring is connected to the second heat dissipation element.
Preferably, in the above thermal protection device, the second heat dissipation element is connected to the first heat dissipation element through an intermediate heat conduction element, the intermediate heat conduction element includes a first mounting section in a circular tube shape, a mounting cavity is provided in the first heat dissipation element, an outer end of the mounting cavity is an open annular port, and the first mounting section is in plug-in fit with the mounting cavity and can rotate relative to the port.
Preferably, in the above thermal protection device, a heat conducting substance is filled between the outer surface of the first mounting section and the inner wall of the mounting cavity.
Preferably, in the above thermal protection device, a seal ring is disposed between the first mounting section and the port.
Preferably, in the above thermal protection device, the intermediate heat conducting element includes a second mounting section, and the second mounting section and the second heat dissipating element are connected together by welding.
Preferably, in the above thermal protection device, a surface of the second mounting section facing the second heat dissipation element is a plane, and the plane is welded to the second heat dissipation element.
Preferably, in the above thermal protection device, the first heat dissipation element is perpendicular to the second heat dissipation element, and the first mounting section is perpendicular to the second mounting section.
Preferably, in the above thermal protection device, the thermistor is mounted on the first heat dissipating element.
Preferably, in the above thermal protection device, the electromagnet is mounted on the first heat radiating element.
A camera comprises a shell, a camera shooting assembly and the thermal protection device, wherein the camera shooting assembly is arranged in the shell, the camera shooting assembly comprises a heating element, and a heat dissipation mechanism is respectively abutted to the heating element and the inner wall of the shell.
A camera comprises a shell, a camera shooting assembly and the thermal protection device, wherein the camera shooting assembly is arranged in the shell, the camera shooting assembly comprises a heating element, a first heat dissipation element is abutted with the heating element, and a second heat dissipation element is abutted with the inner wall of the shell.
Preferably, in the camera, an insulating layer is disposed on an inner wall of the housing, a gap is disposed on the insulating layer, and the second heat dissipation element abuts against the inner wall of the housing exposed outside the gap.
Preferably, in the above camera, a first thermal pad is provided between the first heat radiating member and the heat generating member.
Preferably, in the above camera, a second thermal pad is provided between the second heat radiating member and an inner wall of the housing.
The thermal protection device of the invention has the advantages that: and when the thermal protection device is installed in the equipment to be radiated, the heat radiation mechanism is respectively contacted with the hot end and the cold end of the equipment to be radiated. When the power is off, the electromagnet has no magnetic attraction, and at the moment, the heat dissipation mechanism is far away from the electromagnet and further far away from the hot end or the cold end of the equipment to be dissipated under the action of the elastic element, so that the heat dissipation is disconnected. When the temperature is lower than a set value and heat dissipation is not needed, the resistance value of the thermistor is large, even if the electromagnet is electrified, the electromagnet does not have magnetic attraction, and at the moment, under the action of the elastic element, the heat dissipation mechanism is far away from the electromagnet and further far away from the hot end or the cold end of the device to be dissipated, and heat dissipation is disconnected. The thermal protection device can not only dissipate heat when the temperature of the equipment to be dissipated is overhigh, but also automatically cut off the heat dissipation when the power is off and the temperature is lower than a set value, and then the thermal protection device enters a heat preservation mode.
The camera of the invention has the advantages that: when the heat protection device is installed in the camera, the heat dissipation mechanism is respectively contacted with the heating element of the camera and the inner wall of the shell. When the power is off, the electromagnet does not have magnetic attraction, and at the moment, the heat dissipation mechanism is far away from the electromagnet under the action of the elastic element, so that the heat dissipation is disconnected. When the temperature is lower than a set value and heat dissipation is not needed, the resistance value of the thermistor is large, the electromagnet does not have magnetic attraction even under the power-on condition, and at the moment, the heat dissipation mechanism is far away from the electromagnet under the action of the elastic element, so that heat dissipation is disconnected. The thermal protection device not only can dissipate heat when the temperature of the camera is too high, but also can automatically cut off the heat dissipation and enter a heat preservation mode when the power is off and the temperature is lower than a set value.
Drawings
FIG. 1 is a schematic diagram of a prior art thermal camera protection device;
FIG. 2 is a perspective view of a thermal shield apparatus according to an embodiment of the present invention;
FIG. 3 is a perspective view of a camera in accordance with an embodiment of the present invention;
FIG. 4 is a front view of a camera in accordance with an embodiment of the present invention;
FIG. 5 is a top view of a camera in accordance with an embodiment of the present invention;
FIG. 6 is an exploded view of an intermediate heat conducting element and a first heat dissipating element according to an embodiment of the present invention;
FIG. 7 is a cross-sectional end view of an intermediate heat conducting element and a first heat dissipating element in an embodiment of the present invention;
fig. 8 is a side cross-sectional view of the intermediate heat-conducting element and the first heat-dissipating element after being combined in an embodiment of the invention.
The component names and designations in the drawings are as follows: the heat radiating device comprises a first heat radiating element 10, a first abutting surface 11, a sealing ring 12, a mounting cavity 13, a port 131, a heat conducting substance 14, a second heat radiating element 20, a second abutting surface 21, an electromagnet 30, a thermistor 40, a magnetic element 50, a circuit 60, an intermediate heat conducting element 70, a first mounting section 71, a second mounting section 72, a plane 721, an elastic element 80, a shell 91, a heating element 92, a first heat conducting pad 93, a second heat conducting pad 94, a heat insulating layer 95 and a notch 951.
Detailed Description
Example 1
As shown in fig. 2, the thermal protection device of the present embodiment includes a heat dissipation mechanism, a circuit 60, an electromagnet 30, a thermistor 40, and an elastic element 80, wherein the heat dissipation mechanism is provided with a magnetic element 50; the electromagnet 30 is connected into the circuit 60 and exerts magnetic attraction force on the magnetic element 50 when electrified; the thermistor 40 is connected in the circuit 60 and in series with the electromagnet 30; the resilient member 80 is attached to the heat dissipating mechanism and is used to apply a force to the heat dissipating mechanism away from the electromagnet 30.
As shown in fig. 2 to 5, when the thermal protection device is installed in the device to be cooled, the heat dissipation mechanism is respectively contacted with the hot end and the cold end of the device to be cooled. When the power is off, the electromagnet 30 has no magnetic attraction, and at the moment, under the action of the elastic element 80, the heat dissipation mechanism is far away from the electromagnet 30, further far away from the hot end or the cold end of the equipment to be dissipated, so that the heat dissipation is disconnected. When the temperature is lower than the set value and heat dissipation is not needed, the resistance value of the thermistor 40 is large, even if the electromagnet 30 is electrified, the electromagnet 30 does not have magnetic attraction, at the moment, under the action of the elastic element 80, the heat dissipation mechanism is far away from the electromagnet 30, further far away from the hot end or the cold end of the device to be dissipated, and heat dissipation is disconnected. The heat protection device of this embodiment not only can dispel the heat when treating the heat-radiating equipment high temperature, can also be when outage and temperature are less than the setting value, and the heat dissipation of automatic disconnection gets into the mode that keeps warm.
Preferably, the heat dissipation mechanism includes a first heat dissipation element 10 and a second heat dissipation element 20, and the first heat dissipation element 10 is movably connected to the second heat dissipation element 20, so that under the action of the electromagnet 30, the heat dissipation mechanism does not need to be moved integrally, but only needs to be moved to be turned off or turned on to dissipate heat, thereby reducing the requirement on the magnetic attraction force of the electromagnet 30. Preferably, the magnetic member 50 is mounted on the second heat dissipating member 20 so that the second heat dissipating member 20 can be used as an active end of the heat dissipating mechanism, the active end being activated to turn on or off the heat dissipation. Preferably, the elastic member 80 is a tension spring having one end connected to the first heat dissipating member 10 and the other end connected to the second heat dissipating member 20, and the tension spring has a simple structure and can provide a pulling force to the second heat dissipating member 20 away from the electromagnet 30.
As shown in fig. 6 to 8, preferably, the second heat dissipating element 20 is connected to the first heat dissipating element 10 through an intermediate heat conducting element 70, the intermediate heat conducting element 70 includes a first mounting section 71 in a circular tube shape, a mounting cavity 13 is disposed in the first heat dissipating element 10, an outer end of the mounting cavity 13 is an open annular port 131, and the first mounting section 71 is in plug-fit engagement with the mounting cavity 13 and can rotate relative to the port 131. The arrangement of the intermediate heat conducting element 70 can ensure the heat dissipation effect, and the distance between the second heat dissipating element 20 and the first heat dissipating element 10 is increased, thereby realizing the movable connection between the second heat dissipating element 20 and the first heat dissipating element 10.
Preferably, the heat conducting substance 14 is filled between the outer surface of the first mounting section 71 and the inner wall of the mounting cavity 13. The thermally conductive substance 14 is preferably a thermally conductive silicone grease, and the thermally conductive substance 14 is used to improve the heat transfer efficiency between the first heat dissipating element 10 and the intermediate thermally conductive element 70. Preferably, a sealing ring 12 is disposed between the first mounting section 71 and the port 131, and the sealing ring 12 is used for preventing the heat conductive substance 14 from flowing out of the port 131.
Preferably, the intermediate heat conducting element 70 includes a second mounting section 72, and the second mounting section 72 and the second heat dissipating element 20 are connected together by welding, so that the connection reliability is good. Preferably, the surface of the second mounting section 72 facing the second heat dissipating element 20 is a flat surface 721, the flat surface 721 is welded to the second heat dissipating element 20, and the flat surface 721 can increase the welding area between the second mounting section 72 and the second heat dissipating element 20, thereby improving the connection reliability. Preferably, the first heat dissipation element 10 is perpendicular to the second heat dissipation element 20, the first mounting section 71 is perpendicular to the second mounting section 72, the heat generating device of the camera to be dissipated is perpendicular to the side wall of the housing of the camera, and the first heat dissipation element 10 is perpendicular to the second heat dissipation element 20 to adapt to the structure of the camera.
Preferably, the thermistor 40 is mounted on the first heat dissipating element 10. Preferably, the electromagnet 30 is mounted on the first heat dissipating element 10. Since the position of the first heat dissipating member 10 is fixed, it is convenient to mount the thermistor 40 and the electromagnet 30 on the first heat dissipating member 10.
When the thermal protection device is installed in the device to be cooled, the first cooling element 10 is in contact with a heating source of the device to be cooled, the second cooling element 20 is in contact with the inner wall of the shell of the device to be cooled, and the working process of installing the thermal protection device in the device to be cooled is as follows:
when the temperature of the device to be cooled is too high and heat dissipation is required, the heat of the heat source of the device to be cooled is transferred from the first heat dissipation element 10 to the second heat dissipation element 20 through the intermediate heat conduction element 70, and the second heat dissipation element 20 transfers the heat to the inner wall of the shell of the device to be cooled for heat dissipation.
When the power is off or the temperature of the device to be radiated is lower than the set value, the electromagnet 30 has no magnetic attraction, at this time, under the action of the tension spring, the second radiating element 20 is far away from the electromagnet 30 and further far away from the inner wall of the shell of the device to be radiated, the heat radiation is disconnected, and simultaneously, the first mounting section 71 of the middle heat conducting element 70 rotates relative to the port 131. The heat protection device of this embodiment not only can dispel the heat when treating the heat-radiating equipment high temperature, can also be when outage and temperature are less than the setting value, and the heat dissipation of automatic disconnection gets into the mode that keeps warm.
Example 2
As shown in fig. 3 to 8, the camera of the present embodiment includes a housing 91, an image pickup assembly mounted in the housing 91, the image pickup assembly including a heat generating element 92, and the heat dissipating mechanism abutting against the heat generating element 92 and the inner wall of the housing 91, respectively, and the above-described heat shield device.
The camera of the present embodiment has the advantages that: when the thermal protector is mounted in the camera, the heat dissipation mechanism is brought into contact with the heating element 92 of the camera and the inner wall of the housing 91, respectively. When the power is off, the electromagnet 30 has no magnetic attraction, and at this time, under the action of the elastic element 80, the heat dissipation mechanism is far away from the electromagnet 30, further far away from the heating element 92 of the camera or the inner wall of the shell 91, and the heat dissipation is disconnected. When the temperature is lower than the set value and heat dissipation is not needed, the resistance value of the thermistor 40 is large, even if the electromagnet 30 is electrified, no magnetic attraction force exists, and at the moment, under the action of the elastic element 80, the heat dissipation mechanism is far away from the electromagnet 30 and further far away from the heating element 92 of the camera or the inner wall of the shell 91, and heat dissipation is disconnected. The thermal protection device of this embodiment not only can dispel the heat when the camera temperature is too high, can also be when outage and temperature are less than the setting value, and the heat dissipation of automatic disconnection gets into the mode that keeps warm.
Example 3
As shown in fig. 3 to 8, the camera of the present embodiment includes a housing 91, an image pickup assembly mounted in the housing 91, and the above-mentioned thermal protection device, the image pickup assembly includes a heating element 92, the first heat dissipation member 10 abuts against the heating element 92, and the second heat dissipation member 20 abuts against the inner wall of the housing 91. Specifically, the first contact surface 11 of the first heat dissipating element 10 contacts the heat generating element 92, and the second contact surface 21 of the second heat dissipating element 20 contacts the inner wall of the housing 91.
Preferably, an insulating layer 95 is disposed on an inner wall of the housing 91, a notch 951 is disposed on the insulating layer 95, and the second heat dissipation element 20 abuts against the inner wall of the housing 91 exposed outside the notch 951. The insulating layer 95 is used to improve the insulating effect without heat dissipation, and the notch 951 enables the second heat dissipation element 20 to contact the housing 91 so as to dissipate heat normally when heat dissipation is required.
Preferably, a first thermal pad 93 is disposed between the first heat dissipating element 10 and the heating element 92. Preferably, a second thermal pad 94 is disposed between the second heat dissipating element 20 and the inner wall of the housing 91. The first and second thermal pads 93 and 94 are used to reduce thermal resistance at contact interfaces of different objects, respectively, thereby improving heat dissipation.
When the temperature of the camera is too high and heat dissipation is required, the heat of the heating element 92 of the camera is transferred to the inner wall of the housing 91 through the first heat conducting pad 93, the first heat dissipating element 10, the middle heat conducting element 70, the second heat dissipating element 20, and the second heat conducting pad 94 in sequence to dissipate the heat.
When the power is off or the temperature of the camera is lower than the set value, the electromagnet 30 has no magnetic attraction, at this time, under the action of the tension spring, the second abutting surface 21 of the second heat dissipation member 20 is far away from the second heat conduction pad 94, the heat dissipation is disconnected, and simultaneously, the first mounting section 71 of the intermediate heat conduction member 70 rotates relative to the port 131. The thermal protection device of this embodiment not only can dispel the heat when the camera temperature is too high, can also be when outage and temperature are less than the setting value, and the heat dissipation of automatic disconnection gets into the mode that keeps warm.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and those skilled in the art can make many variations and modifications of the technical solution of the present invention by using the method disclosed in the above disclosure without departing from the technical solution of the present invention, and the present invention is covered by the claims.
Claims (17)
1. A thermal protection device, comprising:
a heat dissipation mechanism on which a magnetic element (50) is mounted;
a circuit (60);
an electromagnet (30), the electromagnet (30) being switched into the electrical circuit (60) and exerting a magnetic attraction force on the magnetic element (50) when energized;
a thermistor (40), said thermistor (40) being switched into said circuit (60) and being connected in series with said electromagnet (30);
the elastic element (80) is connected to the heat dissipation mechanism and used for applying a force far away from the electromagnet (30) to the heat dissipation mechanism, so that the heat dissipation mechanism is far away from the hot end or the cold end of the device to be dissipated.
2. The thermal protection device according to claim 1, characterized in that said heat dissipating means comprise a first heat dissipating element (10) and a second heat dissipating element (20), said first heat dissipating element (10) being movably connected to said second heat dissipating element (20).
3. Thermal protection device according to claim 2, characterized in that said magnetic element (50) is mounted on said second heat dissipating element (20).
4. Thermal protection device according to claim 3, characterized in that said elastic element (80) is a tension spring, one end of which is connected to said first heat dissipating element (10) and the other end is connected to said second heat dissipating element (20).
5. The thermal protection device according to any one of claims 2 to 4, wherein the second heat dissipation element (20) is connected with the first heat dissipation element (10) through an intermediate heat conduction element (70), the intermediate heat conduction element (70) comprises a first mounting section (71) in a shape of a circular tube, a mounting cavity (13) is arranged in the first heat dissipation element (10), the outer end of the mounting cavity (13) is provided with an open annular port (131), and the first mounting section (71) is in plug fit with the mounting cavity (13) and can rotate relative to the port (131).
6. The thermal protection device according to claim 5, characterized in that a thermally conductive substance (14) is filled between the outer surface of the first mounting section (71) and the inner wall of the mounting cavity (13).
7. The thermal protection device according to claim 6, characterized in that a sealing ring (12) is provided between the first mounting section (71) and the port (131).
8. The thermal protection device according to claim 5, characterized in that said intermediate heat-conducting element (70) comprises a second mounting section (72), said second mounting section (72) being joined to said second heat-dissipating element (20) by means of welding.
9. The thermal protection device according to claim 8, characterized in that the face of the second mounting section (72) facing the second heat dissipating element (20) is a flat face (721), the flat face (721) being welded to the second heat dissipating element (20).
10. The thermal protection device according to claim 8, characterized in that said first heat dissipating element (10) is perpendicular to said second heat dissipating element (20), said first mounting section (71) being perpendicular to said second mounting section (72).
11. The thermal protection device according to any one of claims 2 to 4 and 6 to 10, characterized in that said thermistor (40) is mounted on said first heat-dissipating element (10).
12. Thermal protection device according to any one of claims 2 to 4 and 6 to 10, characterized in that said electromagnet (30) is mounted on said first heat dissipating element (10).
13. A camera comprising a housing (91), a camera assembly mounted in the housing (91) and comprising a heat generating element (92), and the heat dissipating mechanism abutting against the heat generating element (92) and an inner wall of the housing (91), respectively, and the thermal protection device of claim 1.
14. A camera, characterized by comprising a housing (91), a camera assembly mounted in the housing (91) and a thermal protection device according to any one of claims 2 to 12, the camera assembly comprising a heat generating element (92), the first heat dissipating element (10) being in abutment with the heat generating element (92), the second heat dissipating element (20) being in abutment with an inner wall of the housing (91).
15. The camera according to claim 14, characterized in that an insulating layer (95) is provided on an inner wall of the housing (91), a notch (951) is provided on the insulating layer (95), and the second heat dissipating element (20) abuts against the inner wall of the housing (91) exposed outside the notch (951).
16. The camera according to claim 14, characterized in that a first thermal pad (93) is arranged between the first heat dissipating element (10) and the heat generating element (92).
17. Camera according to any one of claims 14-16, characterized in that a second heat conducting pad (94) is arranged between the second heat radiating element (20) and the inner wall of the housing (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910021147.1A CN111427222B (en) | 2019-01-09 | 2019-01-09 | Thermal protection device and camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910021147.1A CN111427222B (en) | 2019-01-09 | 2019-01-09 | Thermal protection device and camera |
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| Publication Number | Publication Date |
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| CN111427222A CN111427222A (en) | 2020-07-17 |
| CN111427222B true CN111427222B (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910021147.1A Active CN111427222B (en) | 2019-01-09 | 2019-01-09 | Thermal protection device and camera |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101730439A (en) * | 2008-10-14 | 2010-06-09 | 英业达股份有限公司 | Heat radiating module |
| CN203520194U (en) * | 2013-07-31 | 2014-04-02 | 国家电网公司 | Transformer capable of automatic heat radiation |
| CN107424853A (en) * | 2017-04-24 | 2017-12-01 | 上海交通大学 | A kind of electromagnetic clutch active control contact apparatus for heating switch for cryogenic system |
| CN206743766U (en) * | 2017-09-22 | 2017-12-12 | 国家电网公司 | A kind of new electrically equipment cooling device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9079434B2 (en) * | 2011-09-30 | 2015-07-14 | Brother Kogyo Kabushiki Kaisha | Circuit board unit, cartridge, and manufacturing method thereof |
-
2019
- 2019-01-09 CN CN201910021147.1A patent/CN111427222B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101730439A (en) * | 2008-10-14 | 2010-06-09 | 英业达股份有限公司 | Heat radiating module |
| CN203520194U (en) * | 2013-07-31 | 2014-04-02 | 国家电网公司 | Transformer capable of automatic heat radiation |
| CN107424853A (en) * | 2017-04-24 | 2017-12-01 | 上海交通大学 | A kind of electromagnetic clutch active control contact apparatus for heating switch for cryogenic system |
| CN206743766U (en) * | 2017-09-22 | 2017-12-12 | 国家电网公司 | A kind of new electrically equipment cooling device |
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| CN111427222A (en) | 2020-07-17 |
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