WO2017111241A1 - 카메라의 냉각장치 및 방법 - Google Patents

카메라의 냉각장치 및 방법 Download PDF

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Publication number
WO2017111241A1
WO2017111241A1 PCT/KR2016/008127 KR2016008127W WO2017111241A1 WO 2017111241 A1 WO2017111241 A1 WO 2017111241A1 KR 2016008127 W KR2016008127 W KR 2016008127W WO 2017111241 A1 WO2017111241 A1 WO 2017111241A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
camera
heat
temperature
thermoelectric element
Prior art date
Application number
PCT/KR2016/008127
Other languages
English (en)
French (fr)
Korean (ko)
Inventor
김응욱
Original Assignee
주식회사 이스온
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 이스온 filed Critical 주식회사 이스온
Priority to CN201680075808.3A priority Critical patent/CN108475000A/zh
Publication of WO2017111241A1 publication Critical patent/WO2017111241A1/ko

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Classifications

    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators

Definitions

  • the present invention relates to a cooling device and a method of a camera, and more particularly to a method for adjusting the temperature inside the housing so that the camera or electronic device contained inside the housing is not damaged by the influence of the external temperature.
  • cameras or imaging devices for photographing the surroundings are installed in various places to meet various purposes and purposes.
  • security cameras installed on street lamps for the prevention of streets and alleys
  • fire surveillance cameras installed in the mountains to detect wildfires
  • closed circuit cameras installed for security in certain areas.
  • a camera or imaging device that is installed in a harsh environment with a special purpose is installed or operated to protect it from external factors depending on the environment.
  • Cameras installed in low-temperature environments should not allow cold air from outside the housing to enter the interior, and should be equipped with heating devices to maintain the proper range of temperatures inside.
  • a camera installed in a high temperature environment should lower the temperature of the internal air by allowing the hot air inside the housing to be properly discharged to the outside.
  • air or liquid cooling devices using air or liquid are installed, or heat wires are installed inside a housing in which the camera is accommodated so that the camera can operate normally without being damaged.
  • air or liquid cooling devices using air or liquid are installed, or heat wires are installed inside a housing in which the camera is accommodated so that the camera can operate normally without being damaged.
  • the fan by installing a large amount of the fan in the housing to apply the system to allow the outside air to flow in and exhaust the inside air.
  • air or liquid cooling devices using air or liquid are complicated in structure and heavy in weight, and a structure in which a large amount of fans are installed in the housing is complicated in structure and generates noise due to the rotation of the fan. there was.
  • An object of the present invention is to provide a cooling apparatus and method of a camera that can be operated stably to prevent damage to the imaging device or electronic components located inside the housing even in a high temperature or low temperature external environment.
  • the cooling apparatus of the camera according to the embodiments of the present invention, a housing, an image device unit coupled to the housing, a control unit electrically connected to the image device unit, a transparent window formed on one surface of the housing, the other surface of the housing It is configured to include a heat dissipation unit.
  • the heat dissipation unit may include a fan, a thermoelectric element coupled to one surface of the fan, and a heat sink coupled to both sides of the thermoelectric element.
  • the controller may control the endothermic or exothermic operation of the thermoelectric element according to a preset temperature.
  • the preset temperature may be less than 4 ° C. or more than 35 ° C.
  • the heating operation is controlled when the preset temperature is less than 4 ° C., and when the preset temperature is more than 35 ° C., The endothermic operation can be controlled.
  • the heat radiating portion may be provided with a vent for discharging the heat of the heat sink.
  • the housing is formed in the shape of a circle or polygon may be made of extruded aluminum or synthetic resin material, the heat insulating material may be attached to the inside or outside of the housing.
  • the transparent window portion may be a vacuum double heat radiation glass.
  • the transparent window portion may be attached to a heater or a heating wire.
  • the heat dissipation portion may be hinged to the housing and opened and closed.
  • the heat dissipation unit may be fixed by screwing or bolted to the housing.
  • a method of cooling a camera in a housing includes: generating temperature measurement data by measuring a temperature inside the housing, and receiving the temperature measurement data based on a preset temperature. Generating the division data by dividing the state, and controlling the operation of the thermoelectric element according to the division data.
  • the controlling of the operation of the thermoelectric element may include receiving the division data and controlling heat generation so that the thermoelectric element generates heat in the housing when the low temperature state is received, and in the proper state. And a stop control to stop the operation of the thermoelectric element, and endothermic control so that the thermoelectric element is endothermic in the housing when the high temperature state occurs.
  • the heating control and the endothermic control when operated, it may be fed back to the step of generating the temperature measurement data.
  • the cooling device of the camera can be stably operated so as not to damage the imaging device or the electronic components located inside the housing even in an external environment of high temperature or low temperature. .
  • FIG. 1 is a view showing a substrate portion provided in a housing according to an embodiment of the present invention.
  • FIG. 2 is a view showing that the substrate portion according to the embodiment of the present invention is extracted outside the housing.
  • thermoelectric element 3 is a view showing the operation of the thermoelectric element according to the embodiment of the present invention.
  • FIG. 4 is a view showing a heat dissipation unit according to an embodiment of the present invention.
  • FIG. 5 is a flowchart illustrating an operation of a controller related to an embodiment of the present invention.
  • the housing 100 is formed in a circular or polygonal shape and composed of extruded aluminum or PVC, FRP, etc., the image device unit 220 coupled to the housing 100, the image device The control unit 230 is electrically connected to the unit 220, the transparent window 300 formed on one surface of the housing 100, the heat dissipation unit 400 is coupled to the other surface of the housing 100 is configured.
  • the housing 100 may increase the corrosion resistance and prevent discoloration by treating nickel chromium, and may be made of heat treated stainless steel, high strength aluminum, or synthetic resin to increase the rigidity of the housing 100 and improve durability.
  • the heat insulator 500 may be formed in the form of a circular or polygonal in shape, by attaching or filling the heat insulator 500 to the inside or outside of the housing 100 can minimize the heat transfer inside.
  • the housing 100 may be formed on one surface where the transparent window 300 is formed, in order to prevent foreign matter or light from interfering with the transparent window 300, a cover having an upper end protruding from the lower end thereof. Through this, the peripheral or external field of view may be clearly transmitted to the image device unit 220 inside the housing 100, and the interference of the field of view due to dust may be prevented.
  • the transparent window part 300 may be formed of glass or transparent acrylic so that the image device 220 may photograph the surroundings or the outside in the housing 100, and external air or temperature is transferred to the inside of the housing 100. It may be sealed to be combined so as not to.
  • the transparent window part 300 may be formed in a double heat dissipation structure, and may be vacuum-processed therein, and a frit may be formed at an edge to be bonded to the housing 100.
  • the transparent window 300 may prevent condensation by inserting a heater or a heating wire between or inside the double structure to prevent condensation.
  • the image device unit 220 coupled or mounted inside the housing 100 may be configured as a CMOS or a CCD capable of capturing an image of the surroundings or the outside as an image, and may include a storage device capable of storing an image.
  • the controller 230 may be electrically connected to the image device unit 220 to control the image capturing or storage of the image device 220 to the storage device, and to control the brightness of the image device and to change the sensitivity. Function can be controlled.
  • the handle 210 coupled to the image device unit 220 or the control unit 230 may be applied to various materials that are heat-dissipated without being insulated from heat or insulator to prevent electricity from flowing, and the image device unit 220 in shape.
  • the controller 230 may be formed in the form of a ring or rod to pull by the hand.
  • the heat dissipation unit 400 is an internal fan 410 rotating inside the housing 100 to flow air therein, an internal heat sink 430 coupled to one surface of the internal fan 410 to absorb or release heat, The thermoelectric element 420 coupled to the other surface of the inner heat sink 430 to absorb heat or generate heat, and the outer heat sink 431 coupled to one surface of the thermoelectric element 420 to absorb or release heat transferred from the thermoelectric element 420. ), An external fan 411 coupled to the other surface of the external heat sink 431 to discharge heat to the outside.
  • the inner fan 410 provided inside the housing 100 and the outer fan 411 provided outside are electrically connected to the controller 230, so that the rotation speed and the rotation direction may be controlled. have.
  • the internal fan 410 allows heat to be transferred to the internal heat sink 430, and the thermoelectric element 420 coupled to the internal heat sink 430 and the other surface undergoes heat absorption. To be absorbed.
  • thermoelectric element 420 One surface of the thermoelectric element 420 generates heat to transfer heat to the external heat sink 431, and the external fan 411 coupled to the other surface of the external heat sink 431 is transferred from the external heat sink 431. Let the heat out.
  • thermoelectric element 420 is electrically connected to the control unit 230, and may be controlled to endothermic or generate heat according to a preset temperature of the control unit 230.
  • thermoelectric element 420 when the preset temperature is less than 4 ° C., the thermoelectric element 420 generates heat, thereby raising the temperature inside the housing 100, and when the preset temperature is 35 ° C. or higher, the thermoelectric element The 420 is endothermic operation, it is possible to lower the temperature inside the housing 100.
  • the side or rear of the heat dissipation unit 400 is provided with a vent 440 formed to allow air to enter or exit, so that when the external fan 411 discharges the heat transferred from the external heat sink 431 to the outside The hot air may circulate through the vent 440 and rapidly circulate the air in the heat dissipation unit 400.
  • a fan is additionally provided outside the heat dissipation unit 400 to increase the heat dissipation effect.
  • the heat dissipating unit 400 is coupled to the housing 100 and the lower hinge 120, so that it is not completely separated, the fixing bolt 130 is coupled to the heat dissipating unit 400 and the housing 100 at the top Can be fixed so that.
  • the substrate 100 may be provided in the housing 100, and may be mounted in the slide grooves 110 formed on both sides of the housing 100 to slide therein.
  • the image device unit 220, the controller 230, and the handle 210 may be coupled to the substrate 200, and may be directly coupled through a screw or bolt or may be fixed and coupled through a bracket.
  • FIG. 1 is a diagram illustrating that the substrate unit 200 is provided inside the housing 100
  • FIG. 2 is a diagram illustrating that the substrate unit 200 is extracted to the outside of the housing 100.
  • the cooling device of the camera of the present invention the housing 100, the slide groove 110, the hinge 120, the fixing bolt 130, the substrate portion 200, the handle 210, the image device portion ( 220, the control unit 230, the transparent window 300, the heat dissipation unit 400, the internal fan 410, the external fan 411, the thermoelectric element 420, the internal heat sink 430, the external heat sink 431 ),
  • the ventilation holes 440, the heat insulating material 500 is configured to include.
  • the front part of the housing 100 may be formed to protrude more than the lower end thereof so as not to be disturbed by foreign matter falling, and may be formed in a triangular cover shape.
  • the housing 100 is formed of a material of extruded aluminum and has good corrosion resistance, light weight and easy processing. Through this, it can be prevented from being corroded or easily damaged even in the environment of high temperature, low temperature and high humidity.
  • the shape and the material of the housing 100 are not limited thereto, and various applications of the shape and the material may be used to prevent corrosion or damage even in a harsh environment of high temperature, low temperature, and high humidity.
  • the heat insulating material 500 may be attached or filled to the outer surface or the inner surface of the housing 100.
  • the heat insulating material 500 is not limited to the heat insulating material, heat insulating material, fireproof insulation, and the like, and may be applied to various methods of insulating the interior of the housing 100.
  • corners or the joints may be rounded or shielded to prevent occurrence of stress-intensive cracking due to impact or rapid temperature difference.
  • one surface of the housing 100 is formed of a transparent window 300, is formed so that the inside of the housing 100 can be sealed, the anti-reflective glass so that the image device unit 220 therein can be photographed outside through the front part Alternatively, a transparent material may be applied.
  • the transparent window portion 300 is formed in a double heat dissipation structure in which the outside temperature is not transferred to the inside of the housing 100, so that the inside of the housing 100 may be blocked from heat transfer.
  • a heating wire may be attached to the inside or the outside of the transparent window part 300 and connected to the control unit 230 to remove the condensation.
  • the transparent window 300 prevents external air or temperature from being transferred into the housing 100, and various applications for allowing the image device unit 220 disposed therein to photograph the outside through the transparent window 300 may be performed. It is possible.
  • the substrate unit 200 is mounted in the slide groove 110 formed in the housing 100 is movable slide.
  • the substrate part 200 which can be slidably moved may be extracted toward the opening of the heat dissipation part 400 in which the fixing bolt 130 is separated and opened.
  • the handle 210, the image device 220, and the controller 230 are coupled to the substrate 200, and the image device 220 is disposed in close proximity to the transparent window 300 so as to photograph the outside.
  • the 230 may be arranged to be electrically connected to the image device unit 220.
  • the handle 210 may be disposed on the rear surface of the substrate 200 to pull the substrate 200 from the rear to be extracted to the outside of the housing 100.
  • the maintenance unit may easily extract the substrate 200 without a risk of short circuit, and then removes the substrate 200 from the substrate 100.
  • the image device unit 220 and the controller 230 coupled on the 200 may be easily separated or replaced to maintain the same.
  • the substrate unit 200 may not be provided in the housing 100. Accordingly, the image device unit 220 and the controller 230 are coupled to the inside of the housing 100, and the handle 210 is connected to the image device unit 220. ) And the control unit 230, respectively.
  • the image device 220 may be variously controlled, such as on or off, operation time adjustment, recording time adjustment, enlargement or reduction of an image, and the like, under the control of the controller 230 electrically connected thereto.
  • the heat dissipation unit 400 is hermetically coupled to the rear portion of the housing 100, the fixing bolt 130 is coupled through the heat dissipation unit 400 and the housing 100, the heat dissipation unit 400 and the housing 100 ) Can be combined in a sealed state.
  • the hinge 120 is coupled to the lower end of the housing 100 and the heat dissipation unit 400, so that when the heat dissipation unit 400 is separated from the housing 100, the heat dissipation unit 400 can be rotated and opened without falling. It can be easily coupled to the housing 100.
  • the heat dissipation unit 400 is coupled in the order of the inner fan 410, the inner heat sink 430, the thermoelectric element 420, the outer heat sink 431, the outer fan 411 from the inside of the housing 100 It is composed.
  • the internal fan 410 of the heat dissipation unit 400 may be electrically connected to the controller 230 and rotate according to a signal of the controller 230. When the air inside the housing 100 rises or falls above a predetermined temperature, the internal fan 410 rotates to circulate the air inside the housing 100, and transfers hot or cold air to the internal heat sink 430. You can do that.
  • thermoelectric element 420 having one surface in contact with the inner heat sink 430 may endothermic or exothermic according to heat or cold delivered until the temperature inside the housing 100 reaches a temperature within an appropriate range.
  • the external heat sink 431 in contact with the heat generation or endothermic operation can be.
  • the external fan 411 in contact with one surface of the external heat sink 431 may allow the heat to be transmitted to be discharged, and may transmit heat from the housing 100 to the external heat sink 431 to raise the temperature. can do.
  • thermoelectric element 420 is operated through the application of the current of the control unit 230, the surface that is endothermic or heat generated in accordance with the current direction can be switched.
  • thermoelectric element 420 when the temperature inside the housing 100 is low, heat is generated on the inner surface of the thermoelectric element 420 and heat absorption occurs on the outer surface so that external heat can be transferred to the inside.
  • the control unit 230 may control to properly maintain the temperature inside the housing 100.
  • FIG. 3 is a diagram illustrating the operation of the thermoelectric element 420.
  • the cooling apparatus of the camera of the present invention includes a thermoelectric element 420, a cold contact 421, an on-contact 422, an N-type semiconductor 423, a P-type semiconductor 424.
  • N-type semiconductors 423 and P-type semiconductors 424 are coupled to both ends of the cold junction 421 constituting the thermoelectric element 420.
  • N-type semiconductors 423 are coupled to the left side, and P-type semiconductors are coupled to the right side. 424 may be combined.
  • the on-contact point 422 is coupled, and the P-type semiconductor 424 is a separate on-contact point separated from the on-contact point 422 coupled at the other end of the N-type semiconductor 423 ( 422) and the other end thereof.
  • the on-contact point 422 coupled at the other end of the N-type semiconductor 423 and the on-contact point 422 coupled at the other end of the P-type semiconductor 424 may be electrically connected to each other to constitute one closed circuit.
  • FIG. 4 is a diagram illustrating the heat dissipation unit 400.
  • the cooling device of the camera of the present invention comprises a heat dissipation unit 400, an external fan 411, an external heat sink 431, a vent 440.
  • Heat emitted from the external heat sink 431 is moved into the heat dissipation unit 400 by the external fan 411 coupled to one surface, and transfers heat to the air inside the heat dissipation unit 400.
  • a long rectangular vent 440 is formed on the rear side of the heat dissipation unit 400, so that the outside air is quickly introduced to allow the heat inside the heat dissipation unit 400 to escape to the outside.
  • vent 440 it is possible to apply a variety of forms, such as circular, polygonal to allow the heat inside the heat dissipation unit 400 to escape or enter the outside.
  • the ventilation hole 440 it is not limited to the rear of the heat dissipation unit 400 may be formed on the side or the corner of the heat dissipation unit 400.
  • FIG. 5 is a flowchart illustrating the operation of the controller.
  • the cooling method of the camera of the present invention is a temperature measurement step (S10), state classification step (S20), low temperature state (S21), appropriate state (S22), high temperature state (S23), thermoelectric element control step ( S30), the heat generation operation control (S31), endothermic operation control (S32), it may be configured to include a stop control (S33).
  • temperature measurement data may be generated.
  • the temperature change can be continuously measured to calculate an average value or the temperature can be measured according to a specific date or time to generate temperature measurement data.
  • the state classification step (S20) may receive the temperature measurement data measured in the temperature measurement step (S10) to generate the classification data by classifying the state according to a predetermined temperature.
  • the state classification step (S20) when the preset temperature is set to less than 4 ° C or more than 35 ° C, in the state classification step (S20), if less than 4 ° C, it is divided into low-temperature state to generate the classification data, 35 ° C or more, The data can be generated by dividing by high temperature. If less than 35 °C in more than 4 °C state classification step (S20) can be divided into the appropriate state to generate the classification data.
  • the temperature range is not limited thereto, and may be set to various temperature ranges according to the operating temperature range of the apparatus.
  • the classification of the state according to the preset temperature it is not limited thereto, and may be classified into a state such as ultra low temperature, low temperature, low temperature, titration, high temperature, ultra high temperature, and the like according to the temperature step.
  • thermoelectric element control step S30 the division data divided in the state division step S20 may be received to control the thermoelectric element 420 differently according to each division data.
  • thermoelectric element 420 In the state classification step (S20) is divided into a low temperature state (S21), when the classification data is received, the thermoelectric element 420 to control the heat generation operation to generate heat in the interior of the housing 100 (S31), high temperature state (S23) In the case of receiving classification data divided by), the thermoelectric element 420 may control the endothermic operation (S32) such that the thermoelectric element 420 becomes endothermic inside the housing 100.
  • the stop control S33 may be performed to stop the operation of the thermoelectric element 420.
  • thermoelectric element 420 in the heat generation operation control (S31) or endothermic operation control (S32) step to control the thermoelectric element 420 and fed back to the temperature measurement step (S10) can be measured again the temperature to generate temperature measurement data.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Devices (AREA)
PCT/KR2016/008127 2015-12-23 2016-07-26 카메라의 냉각장치 및 방법 WO2017111241A1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680075808.3A CN108475000A (zh) 2015-12-23 2016-07-26 摄像机冷却装置及其方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20150185298 2015-12-23
KR10-2015-0185298 2015-12-23

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WO2017111241A1 true WO2017111241A1 (ko) 2017-06-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112584020A (zh) * 2020-12-09 2021-03-30 李保林 一种室外停车场摄像头散热装置
CN112682656A (zh) * 2020-12-30 2021-04-20 四川尘就工程技术有限公司 一种基于物联网的动力环境监控装置

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CN109443383A (zh) * 2018-10-31 2019-03-08 歌尔股份有限公司 飞行时间测距相机的标定方法、装置及可读存储介质

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112584020A (zh) * 2020-12-09 2021-03-30 李保林 一种室外停车场摄像头散热装置
CN112584020B (zh) * 2020-12-09 2022-02-11 深圳市超越智能电子有限公司 一种室外停车场摄像头散热装置
CN112682656A (zh) * 2020-12-30 2021-04-20 四川尘就工程技术有限公司 一种基于物联网的动力环境监控装置

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