WO2014025082A1 - 냉각팬을 구비한 안전모 - Google Patents

냉각팬을 구비한 안전모 Download PDF

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Publication number
WO2014025082A1
WO2014025082A1 PCT/KR2012/006854 KR2012006854W WO2014025082A1 WO 2014025082 A1 WO2014025082 A1 WO 2014025082A1 KR 2012006854 W KR2012006854 W KR 2012006854W WO 2014025082 A1 WO2014025082 A1 WO 2014025082A1
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WO
WIPO (PCT)
Prior art keywords
cooling fan
inner member
state
detecting unit
hard hat
Prior art date
Application number
PCT/KR2012/006854
Other languages
English (en)
French (fr)
Korean (ko)
Inventor
전성남
Original Assignee
주식회사 창의산업
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 창의산업 filed Critical 주식회사 창의산업
Priority to JP2014529606A priority Critical patent/JP2014523980A/ja
Publication of WO2014025082A1 publication Critical patent/WO2014025082A1/ko

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Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/28—Ventilating arrangements
    • A42B3/285—Ventilating arrangements with additional heating or cooling means
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/08—Chin straps or similar retention devices
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/10—Linings

Definitions

  • the present invention relates to a hard hat having a cooling fan, and more particularly, if the operator only writes to the head at the work site, it detects this to operate the cooling fan, which may be caused by internal temperature and humidity increase.
  • the present invention relates to a helmet having a cooling fan capable of solving various problems.
  • Conventional hard hats include a sheath of hard material to protect the operator's head from impact.
  • the invention has been registered by the present applicant with a helmet having a cooling fan for ventilating the air inside the helmet, with a forced ventilation function.
  • a helmet having a cooling fan for ventilating the air inside the helmet, with a forced ventilation function.
  • the above-mentioned problems are largely solved, thereby obtaining an excellent effect, but there is room for improvement in convenience and internal structure related to the operation of the cooling fan.
  • the present invention in order to meet the above necessity, without compromising safety, which is the original function of the helmet, the cooling fan is operated only by wearing the helmet, even if worn for a long time, unpleasant feelings caused by sweat or temperature rise, headache, It is an object of the present invention to provide a hard hat having a cooling fan that can effectively prevent hair loss.
  • Still another object of the present invention is to provide a safety helmet having a cooling fan having a simple structure for mounting a cooling fan and improved stability.
  • Still another object of the present invention is to provide a user's safety helmet equipped with a cooling fan that improves convenience by allowing the user to sense the wearable or take off the helmet in various ways, without the operation of a separate switch. To provide.
  • the present invention is formed in a shape that can be covered on the user's head, the inner member having a through portion formed with at least one through hole on one side; An outer shell member provided on an outer side of the inner member; An air passage portion provided inside the shell member and configured to communicate with a through portion of the inner member to allow air flow between the inside of the inner member and the outside of the outer member; Cooling fan provided to suck air from the inner space of the inner member and discharge it to the outside through the air passage, or to blow air into the inner space of the inner member through the air passage ; Detachable detection unit for detecting the wearing state of the state in which the inner member is written on the user's head and the state of detachment of the state separated from the user's head; And a control unit which operates the cooling fan when the detachable detecting unit detects the wearing state, and prevents the cooling fan from operating when the detachable detecting unit detects the detaching state. .
  • the air passage is formed in the inner member
  • the inner member is preferably formed as an integral member.
  • one side and the other side of the outer shell member is provided with first and second jaw strap members, respectively, each end of the first and second jaw strap members are separably coupled to each other, the detachable detection unit, the first, second It includes a chin strap member, and the detachable detection unit, it is preferable to detect that the end of each of the first and second chin strap member is coupled to each other in the wearing state, and to detect the detached state as the detached state.
  • the detachable detection unit the motion detection sensor that can detect the movement
  • the detachment detection unit when the motion detection sensor detects the movement to detect the wearing state, the motion detection sensor to detect the movement If it does not detect it is preferably configured to detect the state of the masking.
  • the detachable detecting unit may include a humidity sensor capable of measuring humidity, and the detachable detecting unit includes a humidity sensor of the inner space measured by the humidity sensor when the humidity value is greater than or equal to a preset humidity value. It is preferable that the sensor is configured to detect the wearing state and detect the detaching state when the humidity value of the inner space of the inner member measured by the humidity sensor is less than a predetermined humidity value.
  • the detachable detecting unit may include a button provided at one side of an inner surface of the inner member, and the detachable detecting unit detects the button as being worn when the button is pressed by the user's head, and the button is not pressed. If not, it is also preferred to be configured to detect this state of detachment.
  • the detachable detecting unit may include a pressure sensor provided on an inner surface of the inner member to measure a pressure, and the detachable detecting unit may be connected to the wearing state when the pressure sensor contacts the user's head. It is preferable to be configured to detect, and if there is no contact with the pressure sensor to detect the detached state.
  • the detachable detection unit the infrared ray transmitting portion provided on one side of the inner surface of the inner member, the infrared ray provided on the other side of the inner surface of the inner member so as to detect the infrared rays generated by the infrared ray transmitting portion
  • a receiving unit wherein the detachment detecting unit detects the wearing state when the infrared rays generated by the infrared ray transmitting unit do not detect the infrared receiving unit, and when the infrared rays generated by the infrared ray transmitting unit are detected by the infrared receiving unit. It is also possible to be configured to detect undressing.
  • the inner member is composed of an endothelial member and an intermediate member, the through portion is provided in the endothelial member, the air passage portion is provided in the intermediate member, the intermediate member, the inner member and the outer member and Is preferably formed as a separate member.
  • the intermediate member is preferably at least one of styrofoam, EPP, and PE foam sponge.
  • the endothelial member is a polycarbonate (PC), polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), phenol resin (PF), polystyrene (PS), ABS resin, melamine, polyvinyl chloride ( At least one of PVC).
  • PC polycarbonate
  • PE polyethylene
  • PET polyethylene terephthalate
  • PP polypropylene
  • PF phenol resin
  • PS polystyrene
  • ABS resin melamine
  • melamine polyvinyl chloride
  • the diameter of each through hole constituting the through portion provided in the endothelial member is preferably 1 mm or more and 30 mm or less.
  • At least one of a temperature sensor and a humidity sensor is provided at one side of the inner member, and the control unit calculates a temperature or humidity by a signal received from the temperature sensor or the humidity sensor, and then compares it with a preset value.
  • the cooling fan is configured to adjust the rotational speed.
  • the user can wear a hard hat, so that the detachable detection unit is configured to operate the cooling fan provided by detecting this effect that the heat inside the hard hat can be conveniently and effectively cooled Can be obtained.
  • the hard hat provided with the cooling fan of the present invention when provided with an integrally formed inner member, the production is simple, the productivity is not only high, it is possible to obtain the effect that it is easy to mount the cooling fan.
  • FIG. 1 is a perspective view of a hard hat having a cooling fan according to an embodiment of the present invention
  • FIG. 2 is a vertical cross-sectional view of FIG. 1;
  • 3 and 4 are the inner member and power supply of the helmet of Figure 1, respectively;
  • FIG. 5 is a schematic view of the helmet of FIG. 1 viewed from below;
  • FIG. 6 is a schematic cross-sectional view of a hard hat equipped with a cooling fan of another embodiment according to the present invention.
  • the hard hat 1 having the cooling fan of one embodiment according to the present invention refers to what a user wears on the head in order to protect the head from danger in a workplace such as a building site, a structure manufacturing site, various factories, and the like.
  • a user is synonymous with "worker.”
  • the hard hat 1 having the cooling fan includes an inner member 10, an outer shell member 20, an air passage part 30, a cooling fan 40, a detachable detecting unit 50, and a controller. .
  • the inner member 10 is formed in a shape that can be covered by the user's head, for example, approximately hemispherical. According to the embodiment, as long as it can be covered by the user's head, it is also possible to deform in a hemispherical shape.
  • the through portion 10 of the upper center of the inner member 10 is provided with a groove 14 on which the cooling fan 40 can be mounted, and on both sides of the groove 14 there is an air reservoir.
  • the furnace part 30 is formed. Since the inner member 10 is formed of an integral member, the inner member 10 is easy to manufacture and has an advantage of improving productivity.
  • the inner member 10 is made of a material that is rigid and suitable for molding.
  • the inner member may be made of a material of the intermediate member in the helmet 1a of another embodiment, which will be described later.
  • the through part 12 is composed of a plurality of through holes 13.
  • the penetrating portion 12 is provided in the center of the upper half of the inner member 10 in the hemispherical shape, and this position is most preferable in order to discharge heat of the inner member inner space 16.
  • the position of the through part may be changed.
  • the penetrating portion is formed in the upper portion, it may be formed in another place.
  • each through hole 13 constituting the through part 12 has a diameter of 1-3 mm.
  • the through part 12 is composed of a plurality of through holes.
  • the diameter of the through hole may be a size of 3mm or more and 30mm or less, the number provided as the diameter increases is provided to reduce.
  • the outer shell member 20 is provided outside the inner member 10.
  • the shell member 20 is made of a material used in a conventional hard hat having a rigidity to protect the user's head from impact.
  • the air passage part 30 is provided inside the shell member 20.
  • the air passage part 30 is formed in a tunnel-like shape to allow air flow between the inner space 16 of the inner member 10 and the outer space 26 of the outer shell member 20.
  • the air passage part 30 extends from the penetrating portion 12 of the inner member 10.
  • the air passage portion 30 is formed in the inner member (10).
  • the air passage part 30 is formed by removing a part of the outer surface of the inner member 10.
  • the air passage part 30 is formed so as to extend from both sides of the inner end portion 10 of the inner member 10 provided with the penetrating portion 12 to the end portion thereof.
  • the air passage portion may be formed in three directions, four directions or more, or may be formed by a space formed in the middle portion of the outer side and the inner side rather than the outer side of the inner member.
  • the cooling fan 40 sucks air including heat from the inner space 16 of the inner member 10 and discharges it to the outer space 26 via the through part 12 and the air passage part 30. In addition, the air may be sucked into the outer space 26 to blow air into the inner space 16 of the inner member 10 through the air passage part 30 and the through part 12.
  • the cooling fan 40 is a direct current centrifugal fan (centrifugal fan) is used to create an air flow from the interior 16 to the exterior 26 of the inner member. The airflow in this direction is more effective for cooling the heat in the interior space 16.
  • the cooling fan may be used as an axial flow fan, according to the embodiment, may be provided so that the air flow is reversed.
  • the detachment detecting unit 50 is configured to detect whether a user or an operator wears the inner member 10 to the head.
  • the meaning of wearing the inner member 10 is the same as the meaning of wearing a hard hat (1). That is, the detachment detecting unit 50 is a means for detecting whether the user is wearing or wearing a hard hat.
  • the 'wearing state' refers to a state in which the inner member 10 is recognized as a state written on the user's head
  • the 'detaching state' means that the inner member 10 is separated from the user's head It means the state recognized as.
  • the control unit operates the cooling fan 40 when the detachable detecting unit 50 detects the wearing state, and when the detachable detecting unit 50 detects the detaching state, the cooling fan 40 does not operate. To control.
  • the control unit receives the signal and causes the cooling fan 40 to operate.
  • the control unit receives the signal and stops the operation when the cooling fan 40 is operating. Keep going.
  • control unit may be provided attached to the cooling fan, may be provided in any portion of the helmet. Since the detailed configuration of the control unit can be easily implemented by those skilled in the art, further description thereof will be omitted.
  • the helmet of the present invention may be provided with a main switch (not shown) that can manually control the operation of the cooling fan.
  • a main switch any one of a toggle switch, a push button switch, a rocker switch, and a slide switch may be used.
  • the main switch is provided in an appropriate position that is accessible to the user.
  • the detachable detecting unit 50 includes first and second jaw strap members 52 and 54 provided on one side and the other side of the shell member.
  • the first and second jaw strap members 52 and 54 are fastening means for preventing the helmet from being unintentionally released after wearing the helmet of the present embodiment.
  • the binding of the jaw strap member is related to safety, and this is enforced by law.
  • the first jaw strap member 52 is detachably coupled to the end 53 and the end 55 of the second jaw strap member 54.
  • Each end 53, 55 is provided with a mechanical configuration or an electrical sensor, such as a limit switch, and when it is coupled to each other, it is detected as a wearing state, and when separated from each other it is detected as a detached state, in each case And output a corresponding signal.
  • the ends 53 and 55 of the first and second jaw strap members 52 and 54 are separated from each other, and this state is detected by the detachment detecting unit.
  • the cooling fan 40 is maintained at a stop state by the control unit receiving the signal corresponding to the cooling fan 40.
  • the cooling fan 40 When the cooling fan 40 is operated, the heat generated inside the inner member 10 of the helmet 1 is discharged to the outside, the temperature does not rise above a certain temperature, so that the operator can continue to work in a comfortable state for a long time do.
  • the control unit may be configured to calculate the temperature and humidity by these sensors, and to adjust whether or not the cooling fan 40 is operated, as well as whether or not the rotational speed is in operation, according to a preset value. In the case of having such a configuration, there is an advantage that the cooling can be made more effectively and efficiently.
  • the power supply unit 70 is provided on the outer rear of the outer shell member 20.
  • the power supply unit 70 is rechargeable and is formed such that the surface contacting the outer shell member 20 has the same curvature as that of the outer shell member 20.
  • the power supply unit 70 is fixed to the shell member 20 by a coupling means such as a clip 72.
  • the power supply unit is fixed to the shell member by means such as a screw, or is bonded and mounted with a clip silicon or the like.
  • the power supply unit is not fixed to the outer shell member, the user may be fixed to the waistband and used, in this case, the power supply unit and the control unit or the cooling fan is configured to be connected by a wire.
  • the power supply unit 70 is provided with a display unit 74 displaying a charge remaining amount.
  • the display unit 74 may be provided with a plurality of light emitting elements such as LEDs, and may be configured to display a percentage (%) of the remaining amount of electricity or to display the remaining use time.
  • the display unit 74 allows the user to check the amount of electricity remaining in the power supply unit and determine whether to charge.
  • the detachable detection unit of the present invention can be variously modified as a different configuration than the above-described embodiment including the first and second jaw strap members. This is described in detail below.
  • Detachable detection unit provided in the helmet of an embodiment according to the present invention may include a motion detection sensor.
  • the motion sensor is provided at the proper position of the helmet.
  • Motion sensor is a sensor for detecting movement.
  • the detachable detection unit including a motion detection sensor detects this as a worn state and outputs a signal corresponding thereto. On the other hand, if it does not detect the movement it is configured to detect the state of the lockout and output a signal corresponding thereto or output no signal.
  • the detachable detecting part of the hard hat When the user grabs with a hand to wear a hard hat having a detachable detecting part including such a motion detecting sensor, the detachable detecting part of the hard hat, which has been detected as being undressed in a stationary state, detects movement and detects it as a wearing state. It sends a corresponding signal to the control unit. The control unit receives the signal to operate the cooling fan.
  • the cooling fan may be operated before the user actually puts it on his head, but even if this difference is ignored, the original object of the invention can be achieved.
  • the control unit is changed to the stop state of the stopped state.
  • the detachable detection unit detects the detachment state and transmits a signal corresponding thereto, the controller stops the operation of the cooling fan.
  • the detachable detection unit provided in the helmet of another embodiment according to the present invention may include a humidity sensor capable of measuring the humidity.
  • the humidity sensor is provided on the inner surface of the inner member 10 to measure the humidity value of the inner space of the inner member.
  • the detachment detecting unit is configured to detect the humidity value of the inner space of the inner member measured by the humidity sensor as a wearing state when the humidity is greater than or equal to a preset humidity value, and detect the detaching state when the humidity value is less than a preset humidity value. .
  • the detailed description of the operation will be omitted since the foregoing description is appropriately modified.
  • the detachable detection unit provided in the helmet of another embodiment according to the present invention may include a button provided on one side of the inner surface of the inner member.
  • the button 50b is illustrated around the penetrating portion 12 of the inner member 10.
  • the detachment detecting unit is configured to detect the button 50b as being worn when the user presses it by the user's head, and detect the detaching state when the button 50b is not pressed.
  • the detailed description of the operation of the present embodiment will be omitted since the foregoing description is appropriately modified.
  • the detachable detection unit may include a pressure sensor instead of the button 50b of the above embodiment.
  • the pressure sensor is configured on the inner side of the inner member to measure the pressure.
  • Detachable detection unit it is configured to detect when the pressure sensor is in contact with the user's head as a wearing state, if there is no contact with the pressure sensor is detected as a state of removal.
  • the detachable detection unit provided in the helmet of another embodiment according to the present invention may be configured to include an infrared transmitter and an infrared receiver.
  • an infrared ray transmitting unit may be provided at one side of the inner member indicated by 52c, and an infrared ray receiving unit may be provided at the other side of the inner side of the inner member indicated by 54c.
  • the detachment detecting unit is configured to detect a wearing state when the infrared ray generated by the infrared ray transmitter is not detected by the infrared receiver, and detect a detached state when the infrared ray generated by the infrared ray transmitter is detected by the infrared receiver.
  • the detachable detecting unit detects the wearing state.
  • infrared light is detected at the receiver, and the detachment detecting unit detects it as a detached state.
  • FIG. 6 to 8 illustrate a hard hat 1a with a cooling fan of another embodiment according to the invention.
  • the inner member 10 of the previous embodiment is the inner skin member 11a and the intermediate member 15a in this embodiment.
  • the difference is that it consists of:
  • a configuration different from the hard hat 1 of the first embodiment will be mainly described.
  • the foregoing description is applied as it is or as appropriately modified.
  • the hard hat 1a having the cooling fan of the present embodiment includes an inner member 10a, an outer shell member 20a, an air passage part 30a, a cooling fan 40a, a detachable detecting part 50a, and a controller. do.
  • the inner member 10a is composed of an endothelial member 11a and an intermediate member 15a.
  • the endothelial member (11a) is provided with a through portion (12a).
  • the through part 12a is composed of a plurality of through holes 13a.
  • the endothelial member 11a is formed with a guide portion 17a that facilitates the assembly of the intermediate member 15a and constitutes a part of the air passage portion.
  • the pair of guide portions 17a protrude from the outer surface of the endothelial member 11a to extend.
  • the endothelial member is made of polycarbonate material.
  • Polycarbonate has the advantage of being transparent, excellent in strength and tensile strength, and is suitable as an endothelial member.
  • the endothelial member is polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), phenol resin (PF), polystyrene (PS), ABS resin, melamine, polyvinyl chloride (PVC) It is also possible to make a material of any one or a mixture of two or more of them.
  • Polyethylene is light, flexible, chemical resistant, and has excellent electrical insulation.
  • Polyethylene terephthalate PET
  • PET polyethylene terephthalate
  • PA polyamide
  • Nylon polyamide
  • PP polypropylene
  • Polyvinyl chloride has the advantage of low price, flexible degree can be adjusted according to the degree of addition of plasticizer, has the advantage of good chemical resistance, electrical insulation, polystyrene (PS) is colorless and transparent, The visible light transmittance is second only to acrylic and has the advantage of good electrical insulation and chemical resistance. Paper has the advantage of having strength, chemical resistance, oil resistance and gloss. The above advantages are taken into account when selecting the material of the endothelial member.
  • the air passage part 30a is provided in the intermediate member 15a.
  • a groove 14a which is a space for mounting the cooling fan 40a, is formed in the upper center of the intermediate member 15a.
  • the intermediate member 15a is formed as a member separate from the inner skin member 11a and the outer member 20a. In this case, the shock absorbing performance is improved.
  • the intermediate member 15a is made of at least one of styrofoam, EPP, and PE foam sponge.
  • Styrofoam expanded polystyrene
  • EPP expanded polypropylene
  • PE foamed sponge foamed polyethylene
  • foamed polyurethane PEF
  • Styrofoam (foamed polystyrene) is the oldest foamed plastic and is still the most widely used.
  • EPP is a material that strengthens physical vulnerabilities of styrofoam, such as cracking, repeated buffering, flexibility, and chemical resistance, and is widely used for packaging and industrial materials of expensive products such as electronics packaging, automotive parts, and structures. It is characterized by its strength and flexibility, which has little effect on chemical treatment and corrosion.
  • PE foamed sponge has low rigidity but good elasticity and flexibility.
  • Polyurethane foam has the advantage of obtaining a variety of foams from hard to soft by the nature of the polyol as the main raw material. The selection of the intermediate member material is made in consideration of the above advantages.

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  • Helmets And Other Head Coverings (AREA)
PCT/KR2012/006854 2012-08-10 2012-08-28 냉각팬을 구비한 안전모 WO2014025082A1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014529606A JP2014523980A (ja) 2012-08-10 2012-08-28 冷却ファンを具備したヘルメット

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2012-0087989 2012-08-10
KR1020120087989A KR101450707B1 (ko) 2012-08-10 2012-08-10 냉각팬을 구비한 안전모

Publications (1)

Publication Number Publication Date
WO2014025082A1 true WO2014025082A1 (ko) 2014-02-13

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JP (1) JP2014523980A (zh)
KR (1) KR101450707B1 (zh)
TW (1) TW201406310A (zh)
WO (1) WO2014025082A1 (zh)

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EP3167735A1 (en) * 2015-11-11 2017-05-17 Jarvish Inc. Helmet with noise-reducing system
US11141309B2 (en) 2019-06-03 2021-10-12 Cooler Heads Care, Inc. Cooling cap assembly and cooling unit

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WO2016140384A1 (ko) * 2015-03-04 2016-09-09 이셀전자주식회사 카메라가 구비된 헬멧
WO2016182116A1 (ko) * 2015-05-14 2016-11-17 주식회사 한성세이프티 스마트 안전모
CN105559225B (zh) * 2015-08-28 2018-05-04 周丐社 施工安全帽
BR112018013870B1 (pt) * 2016-01-07 2022-03-15 Thi Total Healthcare Innovation Gmbh Sistema de barreira e método de controlar um dispositivo dentro de um sistema de barreira
KR102040308B1 (ko) 2016-12-20 2019-11-04 정승은 안전모에 착탈 가능한 냉각유닛
KR20170004044U (ko) 2017-05-30 2017-11-29 전성남 안전모 냉각팩
KR102170308B1 (ko) * 2018-11-06 2020-10-26 주식회사 창의산업 통풍제어 기능을 갖는 오토바이 헬멧
WO2021090683A1 (ja) * 2019-11-06 2021-05-14 株式会社辰巳菱機 情報装置
KR102358138B1 (ko) * 2020-02-14 2022-02-03 동의대학교 산학협력단 쿨링 헬멧
WO2021235307A1 (ja) * 2020-05-22 2021-11-25 株式会社セフト研究所 ヘルメット内換気装置
JP7478421B2 (ja) 2020-05-22 2024-05-07 株式会社セフト研究所 ヘルメット内換気装置
KR102534485B1 (ko) * 2021-08-08 2023-05-18 김원봉 에어펌프 송풍식 안전모
KR102584239B1 (ko) 2022-08-10 2023-10-05 주식회사 에스오디 태양광 냉온 안전모

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US20100095439A1 (en) * 2008-10-16 2010-04-22 HaberVision LLC Actively ventilated helmet systems and methods
KR101100558B1 (ko) * 2009-03-11 2011-12-29 전성남 강제통풍기능을 갖춘 안전모

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EP3167735A1 (en) * 2015-11-11 2017-05-17 Jarvish Inc. Helmet with noise-reducing system
US11141309B2 (en) 2019-06-03 2021-10-12 Cooler Heads Care, Inc. Cooling cap assembly and cooling unit
US11622881B2 (en) 2019-06-03 2023-04-11 Cooler Heads Care, Inc. Cooling cap assembly and cooling unit

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KR20140020677A (ko) 2014-02-19
KR101450707B1 (ko) 2014-10-16
TW201406310A (zh) 2014-02-16
JP2014523980A (ja) 2014-09-18

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