KR20140020677A - Helmet with cooling fan - Google Patents

Abstract

The present invention relates to a safety helmet with a cooling fan, wherein the safety helmet comprises: an inner member having such a shape to cover the head of a user and provided with a penetration part having at least one penetration hole formed in one side thereof; an outer cover member provided outside the inner member; an air passage part provided inside the outer cover member and communicating with the penetration part of the inner member so as to enable the air flow between an inside of the inner member and an outside of the outer cover member; a cooling fan for absorbing air from an inner space of the inner member to discharge the air through the air passage part, or absorbing air from the outside to flow out to the inner space of the inner member through the air passage part; a wear and separation state sensing part for sensing the wear state in which the inner member is put on the head of the user and the separation state in which the inner member is separated from the head of the user; and a controller for operating the cooling fan when the wear and separation state sensing part senses the wear state, and stopping the operation of the cooling fan when the wear and separation state sensing part senses the separation state.

Description

Helmet with cooling fan "

The present invention relates to a helmet provided with a cooling fan. More particularly, the present invention relates to a helmet having a cooling fan, and more particularly, The present invention relates to a helmet provided with a cooling fan capable of solving the above problems.

In workplaces such as construction sites and manufacturing plants, workers must wear helmets for their own safety. This is because there is always a risk of falling, collision, or falling.

Most workers are voluntarily wearing helmets because they have a belief in the safety of helmets, and employers are also encouraged to wear safety helmets to prevent industrial accidents. Conventional helmets include a hard shell to protect the operator's head from impact.

However, apart from these safety considerations, if a worker wears a helmet for a long time, he or she feels discomfort and heat due to an increase in internal temperature and humidity, and may cause headache or hair loss. For this reason, workers are often reluctant to wear continuously during their working hours.

Particularly, in the case of hot summer, the heat generated from the operator's head is added to the hot air of the outside air, and the temperature inside the safety cap is greatly increased. As a result, due to a large amount of sweat in the helmet and an increase in temperature, the operator repeatedly wears off the helmet to cool the heat.

This hassle and discomfort causes workers to avoid wearing safety helmets, which in turn can pose a great risk to the personal safety of workers and the employer.

On the other hand, the invention relating to a helmet having a forced ventilation function is provided with a cooling fan for ventilating the air inside the helmet, which has been registered by the present applicant. However, in the case of the safety helmet having the forced ventilation function of the patented invention, the above-described problems are largely solved to obtain excellent effects, but there is room for improvement in ease of operation and internal structure of the cooling fan.

Patent Registration No. 1100558

It is an object of the present invention to provide a cooling fan capable of satisfying the above-mentioned need, and it is an object of the present invention to provide a cooling fan, And to provide a helmet provided with a cooling fan that can effectively prevent hair loss, hair loss, and the like.

It is still another object of the present invention to provide a helmet provided with a cooling fan having a simple structure for mounting the cooling fan and improved stability.

It is a further object of the present invention to provide a safety helmet having a cooling fan with improved convenience by enabling the user to sense the helmet by wearing or removing the helmet in various ways, .

According to an aspect of the present invention, there is provided an electronic device comprising: an inner member having a through-hole formed in a shape that can be covered by a user's head and having at least one through-hole formed at one side thereof; A cover member provided on the outer side of the inner member; An air passage portion provided on the inner side of the outer shell member and configured to communicate with a penetration portion of the inner member so that air can flow between the inside of the inner member and the outside of the outer shell member; A cooling fan for sucking air from the inner space of the inner member and discharging the air through the air passage portion to the outside or blowing air into the inner space of the inner member through the air passage portion by sucking outside air, ; A detachment detecting unit for detecting a wearing state of the inner member in a state in which the inner member is written on the user's head and a detaching state in a state of being separated from the user's head; And a control unit for activating the cooling fan when the detachable sensing unit senses the wearing state and preventing the cooling fan from operating when the detachable sensing unit senses the detachment state, .

Meanwhile, it is preferable that the air passage portion is formed in the inner member, and the inner member is formed as an integral member.

Each of the first and second tiebelt members may have a first and a second tiebone member, and the first and second tiebreaker members may be detachably coupled to each other. And the detachable state detection unit senses that the ends of the first and second chin rest members are coupled to each other and senses the detached state as the mutually separated state.

The attachment / detachment sensing unit may include a motion detection sensor capable of sensing motion. The detachment detection unit senses movement of the motion detection sensor as the wear state, and when the motion detection sensor detects motion, And if it is not detected, detect it in the state of the detachment.

When the humidity value of the inner space of the inner member measured by the humidity sensor is equal to or greater than a predetermined humidity value, the detachment detection unit detects the humidity of the inner space, And detects the state of wear when the humidity value of the inner space of the inner member measured by the humidity sensor becomes less than a predetermined humidity value.

The detachable detection unit may include a button provided on one side of the inner surface of the inner member. The detachable detection unit senses the pressed state of the button when the button is depressed by the user's head, It is preferable to detect it as the above-mentioned state of detachment.

The attachment / detachment sensing unit may include a pressure sensor provided on an inner surface of the inner member to measure pressure, and the detachment / detection unit may detect the attachment / detachment of the pressure sensor when the pressure sensor is in contact with the user's head And when the pressure sensor is not in contact with the pressure sensor, the pressure sensor is preferably configured to detect the state of the pressure sensor.

The attachment / detachment detection unit may include an infrared ray transmission unit provided on one side of the inner surface of the inner member, an infrared ray sensor provided on the other side of the inner side surface of the inner member and configured to detect infrared rays generated in the infrared ray detection unit, Wherein the detachment detecting unit detects the wearing state when the infrared ray generated by the infrared ray emitting unit is not sensed by the infrared ray receiving unit and when the infrared ray receiving unit detects the infrared ray generated by the infrared ray emitting unit, It is also possible to configure it to detect the state of dehiscence.

The inner member includes the inner member and the intermediate member, the penetrating portion is provided in the inner member, the air passage portion is provided in the intermediate member, and the intermediate member includes the inner member and the outer member Is preferably formed as a separate member.

The intermediate member is preferably at least one of styrofoam, EPP, and PE foam sponge.

The endothelium material may be at least one selected from the group consisting of polycarbonate (PC), polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), phenol resin (PF), polystyrene (PS), ABS resin, melamine, PVC).

On the other hand, it is preferable that the diameter of each through-hole constituting the penetration portion provided in the inner skin member is 1 mm or more and 30 mm or less.

Also, at least one of a temperature sensor and a humidity sensor is provided on one side of the inner member, and the controller calculates a temperature or a humidity according to a signal received from the temperature sensor or the humidity sensor, So that the rotation speed of the cooling fan can be adjusted.

According to the helmet provided with the cooling fan of the present invention, when the user wears the helmet, the detachable / detachable unit senses the helmet and operates the provided cooling fan, so that the heat inside the helmet can be conveniently and effectively cooled Can be obtained.

Further, according to the helmet provided with the cooling fan of the present invention, it is possible to obtain an effect that not only the manufacturing is simple, the productivity is enhanced but also the mounting of the cooling fan is facilitated when the inner member integrally formed is provided.

1 is a perspective view of a helmet provided with a cooling fan according to an embodiment of the present invention,
Fig. 2 is a schematic sectional view in the vertical direction of Fig. 1,
Figures 3 and 4 illustrate the inner member of the helmet and the power supply,
FIG. 5 is a schematic view of the helmet of FIG. 1 viewed from below,
6 is a schematic sectional view of a helmet provided with a cooling fan according to another embodiment of the present invention,
Figs. 7 and 8 are respectively the end cap member and the intermediate member of the helmet of Fig. 6; Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The safety helmet 1 provided with the cooling fan according to the embodiment of the present invention refers to a user wearing a head in order to protect a head from a danger in a work site such as a construction site, a structure manufacturing site, and various factories. The user is synonymous with 'worker'.

The helmet 1 having the cooling fan includes an inner member 10, a sheath member 20, an air passage portion 30, a cooling fan 40, a detachable unit 50, and a control unit .

The inner member 10 is formed in a shape that can be put on the user's head, for example, an approximately hemispherical shape. As long as it can be covered by the user's head according to the embodiment, a deformed shape on hemispherical shape is also possible.

In the present embodiment, the through-hole 10 at the upper center of the inner member 10 is provided with a groove 14 into which the cooling fan 40 can be mounted, And a guide portion 30 is formed. The inner member 10 is formed of an integral member, which is advantageous in that it is easy to manufacture and productivity is improved

The inner member 10 is made of a rigid material suitable for molding. The inner member can be made of the material of the intermediate member in the helmet 1a of another embodiment described later.

A penetrating portion 12 is provided at one side of the inner member 10. The penetrating portion 12 is composed of a plurality of through holes 13. In this embodiment, the penetrating portion 12 is provided at the center of the top of the hemispherical inner member 10, and this position is most preferable for discharging the heat of the inner member inner space 16. However, the position of the penetrating portion can be changed according to the embodiment. The penetrating portion may also be formed on the upper portion and may be additionally formed elsewhere.

In the case of the present embodiment, the through-holes 13 of the penetrating portion 12 have a diameter of 1-3 mm. The penetrating portion 12 is formed of a plurality of through holes. Depending on the embodiment, the diameter of the through hole may be 3 mm or more and 30 mm or less, and the number of the through holes may be reduced as the diameter increases.

The cover member 20 is provided on the outer side of the inner member 10. The sheath member 20 is made of a material used in a conventional helmet with a rigidity to protect the user's head from impact.

The air passage portion (30) is provided on the inner side of the covering member (20). The air passage portion 30 is formed in the shape of a tunnel so that the air can flow between the inner space 16 of the inner member 10 and the outer space 26 of the enclosure member 20. The air passage portion 30 extends from the penetration portion 12 of the inner member 10.

In the case of this embodiment, the air passage portion 30 is formed in the inner member 10. Referring to FIG. 3, the air passage portion 30 is formed by removing a part of the outer surface of the inner member 10. The air passage portion 30 is formed so as to extend from the upper center portion of the inner member 10 provided with the penetrating portion 12 to both sides thereof and to be connected to the end portion.

Meanwhile, according to the embodiment, the air passage portion may be formed in three directions, four directions or more, or may be formed by a space formed in an intermediate portion between the outer side surface and the inner side surface, not the outer side surface of the inner member.

The cooling fan 40 sucks the air including the heat from the internal space 16 of the internal member 10 and discharges it to the external space 26 through the penetrating portion 12 and the air passage portion 30 And blow air into the inner space 16 of the inner member 10 through the air passage portion 30 and the penetration portion 12 by sucking the air in the outer space 26.

In the case of the present embodiment, the cooling fan 40 uses a DC centrifugal fan and creates an air flow from the interior 16 to the exterior 26 of the inner member. The air flow in this direction is more effective in cooling the heat of the inner space 16.

Meanwhile, according to the embodiment, the cooling fan may be an axial flow fan, or may be provided so as to reverse the air flow.

The detachable detection unit 50 detects whether a user or an operator wears the inner member 10 on the head. The meaning of wearing the inner member 10 is the same as that of wearing the hard hat 1. That is, the detachment detection unit 50 is a means for detecting whether the user wears a helmet or whether the user wears the helmet.

In this specification, the term 'wear state' means a state in which the inner member 10 is recognized as being written on the head of the user. In the 'undone state', the inner member 10 is separated from the user's head As a result.

The control unit operates the cooling fan 40 when the detachment detecting unit 50 senses that the detachment detecting unit 50 is worn and the cooling fan 40 is not operated when the detachment detecting unit 50 detects the detachment state .

That is, when the detachment detection unit 50 senses the current state as a wear state and outputs a signal corresponding thereto, the control unit receives the signal to cause the cooling fan 40 to operate. In addition, when the detachment detection unit 50 senses the state of detachment and outputs a signal corresponding thereto, the control unit receives the signal, stops the operation when the cooling fan 40 is in operation, .

Although not shown in the drawings, the control unit may be attached to the cooling fan or may be provided in any part of the helmet. The detailed configuration of the control unit can be easily implemented by those skilled in the art, so that further explanation is omitted.

Meanwhile, the safety helmet of the present invention may be provided with a main switch (not shown) which can manually control whether the cooling fan is operated or not. The main switch may be a toggle switch, a push button switch, a locus switch, or a slide switch. The main switch is provided in a suitable position for the user to access.

In this embodiment, the detachable detection portion 50 includes first and second tie-bar members 52 and 54 provided on one side and the other side of the covering member.

The first and second chin rest members 52 and 54 are fixing means for preventing the helmet of the present embodiment from unintentionally detaching after wearing the helmet of the present embodiment on the head. Such chin strap engagement is related to safety, and it is enforced by law.

The first upper tuck batt member 52 and the second lower tuck batt member 54 can be detachably coupled to the end portion 53 and the end portion 55 of the second chin rest member 54. [ Each of the end portions 53 and 55 is provided with a mechanical structure such as a limit switch or an electrical sensor or the like so as to detect the wear state when they are mutually coupled and detect the wear state as a state of detachment when they are mutually separated, And output a corresponding signal.

Therefore, if the user wears the helmet 1 of the present embodiment and merely joins the end portions 53 and 55 of the first and second chin rest members 52 and 54 with each other, Is detected by the detachment detection unit 50 and is transmitted to the control unit, and the control unit receives the signal to operate the cooling fan 40. [

Before the cooling fan 40 is operated, the end portions 53 and 55 of the first and second upper tie member 52 and 54 are separated from each other. Such a state is detected as a state of deterioration by the detachment detecting portion, The cooling fan 40 is maintained in a stopped state by the control unit which receives the signal corresponding to the control signal.

When the cooling fan 40 is operated, the heat generated inside the inner member 10 of the safety helmet 1 is discharged to the outside, so that the temperature does not rise above a predetermined temperature, and the operator can continue the operation in a comfortable state for a long time do.

When the hard hat user (worker) who has finished the work separates the end portions 53 and 55 of the first and second tie batt members 52 and 54 that have been engaged to remove the safety hat 1, Is generated and transmitted to the control unit. The control unit receives the signal and stops the operation of the cooling fan 40 and maintains the operation. Therefore, the user can automatically stop the operation of the cooling fan 40 even if he / she does not need to turn off the cooling fan 40.

Meanwhile, according to the embodiment, a temperature sensor or a humidity sensor may be provided on one side of the inner member. In the control unit, temperature and humidity can be calculated by these sensors, and it is possible to control not only the operation of the cooling fan 40 but also the increase / decrease of the rotation speed during operation according to a predetermined value. When such a structure is provided, there is an advantage that cooling can be performed more effectively and efficiently.

On the other hand, in the case of this embodiment, a power supply unit 70 is provided on the outer rear side of the outer shell member 20. The power supply unit 70 is of a rechargeable type and is formed such that the surface thereof in contact with the casing member 20 has the same curvature as the curvature of the casing member 20. [ The power supply unit 70 is fixed to the sheath member 20 by a coupling means such as a clip 72.

According to the embodiment, the power supply part is fixed to the sheath member by a means such as a screw, or is joined by clips or the like. Also, according to an embodiment, the power supply unit may be fixed to a waistband or the like instead of being fixed to the sheath member. In this case, the power supply unit, the control unit, and the cooling fan are connected by a wire.

Referring to FIG. 4, the power supply unit 70 is provided with a display unit 74 for displaying the remaining charge amount. The display unit 74 may be constituted by a plurality of light emitting devices such as LEDs, or may be configured to display a percentage (%) of the remaining electricity amount, or to display remaining usage time. The display unit 74 allows the user to check the amount of electricity remaining in the power source unit and determine whether or not to charge the power source unit.

Meanwhile, the detachable detection unit of the present invention can be modified in various ways as a different configuration from the above-described embodiment including the first and second chin rest members. This will be described in detail below.

The detachment detecting unit provided in the helmet of the embodiment of the present invention may include a motion detection sensor. The motion detection sensor is provided at an appropriate position of the helmet. The motion detection sensor is a motion detection sensor.

When the motion detection sensor senses a motion, the detachment detection unit including the motion detection sensor detects the wear state and outputs a corresponding signal. On the other hand, when motion can not be detected, it is detected that the robot is in the state of de-embedding, and a signal corresponding thereto is output or no signal is output.

When a user wears a helmet equipped with a detachable sensing part including such a motion detection sensor, the detachable sensing part of the helmet sensing the detachment state of the helmet detects the movement and senses the movement as wearing And sends a corresponding signal to the control unit. The control unit receives the signal and operates the cooling fan.

In this case, the cooling fan may actually operate before the user writes to the head, but the original purpose of the invention can be achieved by ignoring this difference.

The worker who wears a helmet on his head is almost constantly moving, so the operation of the cooling fan does not stop. However, in some cases, the worker who wears the helmet on his head may not actually move for a few seconds. In this case, if the stop state is in the stop state for a predetermined time, for example, 5 seconds or more, It can also be set to recognize

When the user removes the safety helmet and puts it on the shelf, the movement is lost. In this case, the detachable detection unit detects the detachment state and sends a corresponding signal to the control unit, whereby the control unit stops the operation of the cooling fan.

In another embodiment of the present invention, the detachable sensing unit provided on the helmet may include a humidity sensor capable of measuring humidity.

The humidity sensor is provided on the inner surface of the inner member 10 so as to measure the humidity value of the inner space of the inner member. The detachment detection unit is configured to detect the humidity of the inner space of the inner member measured by the humidity sensor when the humidity value of the inner space is equal to or higher than a predetermined humidity value and to detect the detachment state when the humidity value falls below a predetermined humidity value . The detailed description of the operation is omitted because it is appropriately modified and applied as described above.

In another aspect of the present invention, the detachable detection unit of the helmet may include a button provided on one side of the inner surface of the inner member.

Referring to FIG. 5, it is illustrated that the button 50b is provided around the penetrating portion 12 of the inner member 10. When the button 50b is depressed by the user's head, the detachment detecting unit detects the depressed state when the button 50b is depressed. The detailed operation of this embodiment will be omitted because the above-described description is suitably modified and applied.

On the other hand, in the case of another embodiment, the detachment detection unit may include a pressure sensor instead of the button 50b of the immediately preceding embodiment. The pressure sensor is provided on the inner surface of the inner member to measure the pressure.

The detachment detection unit senses the wear state of the pressure sensor when the pressure sensor is in contact with the user's head and detects the wear state of the pressure sensor when the pressure sensor is not in contact with the pressure sensor.

Meanwhile, the detachable detection unit provided in the helmet of another embodiment according to the present invention may include an infrared ray transmitter and an infrared receiver.

Referring to FIG. 5, an infrared emitting unit may be provided on one side of the inner member indicated by 52c, and an infrared ray receiving unit may be provided on the other side of the inner side of the inner member indicated by 54c.

The detachable detection unit detects the wearing state when the infrared ray generated by the infrared ray emitting unit is not detected by the infrared ray receiving unit and detects the detached state when the infrared ray emitting unit generates the infrared ray by the infrared ray receiving unit.

That is, when a user wears a helmet, the head of the user interrupts the infrared rays emitted from the infrared transmitter to the receiver. In this case, the detachable detection portion is sensed as wearing. When the user removes the helmet, the infrared ray is detected by the receiving unit, and the detachable detection unit detects the detached state. The detailed operation of this embodiment will be omitted because the above-described description is suitably modified and applied.

6 to 8 illustrate a safety helmet 1a having a cooling fan according to another embodiment of the present invention.

The inner member 10 of the foregoing embodiment is different from the hard hat 1 of the first embodiment in that the inner member 10a and the intermediate member 15a are provided in the present embodiment, As shown in FIG. Hereinafter, a configuration which differs from the helmet 1 of the first embodiment will be mainly described, and the configurations not described in the above description are applied as they are or modified appropriately.

The safety helmet 1a provided with the cooling fan of the present embodiment includes an inner member 10a, a sheath member 20a, an air passage portion 30a, a cooling fan 40a, a detachable detection portion 50a, do.

The inner member 10a is composed of an inner member 11a and an intermediate member 15a.

Referring to Fig. 7, the inner member 11a is provided with a penetration portion 12a. The penetrating portion 12a is composed of a plurality of through holes 13a. The inner member 11a is provided with a guide portion 17a that facilitates 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 inner member 11a.

In the case of this embodiment, the endothelium material is made of a polycarbonate material. Polycarbonate is transparent and has an advantage of being excellent in strength and tensile strength, and is therefore suitable as an inner layer member.

On the other hand, according to the embodiment, the endothelium material is made of polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), phenol resin (PF), polystyrene (PS), ABS resin, melamine, polyvinyl chloride , Or a mixture of two or more of these materials.

Polyethylene (PE) has the advantage of being light and flexible, strong to chemicals, and excellent in electrical insulation. Polyethylene terephthalate (PET) has the highest heat resistance among thermoplastic resins and is stable against temperature and humidity, Polyamide (PA, Nylon) is excellent in abrasion resistance, strong and tensile strength. Polypropylene (PP) is similar to polyethylene, but it is more transparent and has a softening point, so it is resistant to repeated bending. (PS) is colorless and transparent, and it has the advantages of low price of polyvinyl chloride (PVC), flexible degree of control according to the degree of plasticizer addition, good chemical resistance and good electrical insulation, Visible light transmittance is superior to acrylic, and electrical insulation and chemical resistance are good, and ABS It has the advantage of good luster, strength, chemical resistance, oil resistance and gloss. Consider the advantages described above when selecting the material of the inner member.

The air passage portion 30a is provided in the intermediate member 15a. A groove 14a, which is a space for mounting the cooling fan 40a, is formed at an upper center of the intermediate member 15a. The intermediate member 15a is formed as a member separate from the inner member 11a and the outer member 20a. In the case of such a configuration, there is an advantage that the shock absorbing performance is improved.

In the case of this embodiment, the intermediate member 15a is made of at least one of styrofoam, EPP, PE foam sponge.

Styrofoam (EPS, expanded polystyrene), EPP (foam polypropylene), PE foam sponge (foam polyethylene) and foam polyurethane (PUF) are all types of foamed plastic, It is suitable for writing as an intermediate member.

Styrofoam (foam polystelene) is the oldest foamed plastic and is still the most widely used. EPP is widely used as packaging materials and industrial materials for high-priced products such as electronic products packaging, automobile parts, and structures, reinforcing the physical vulnerability of conventional styrofoam, such as cracking, repeated buffering, flexibility and chemical resistance. It is characterized by strength and flexibility and has little influence on chemical treatment and corrosion.

PE foaming sponge has low rigidity but has good elasticity and flexibility. Polyurethane foam is advantageous in that it can obtain a variety of foams from hard to soft due to 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.

1 ... helmet 10 ... inner member
12 ... penetration part 13 ... through hole
20 ... sheath member 30 ... air passage portion
40 ... cooling fan 50 ... detachment detection unit

Claims (13)

An inner member having a through-hole formed in a shape that can be covered by a user's head and having at least one through hole at one side thereof;
A cover member provided on the outer side of the inner member;
An air passage portion provided on the inner side of the outer shell member and configured to communicate with a penetration portion of the inner member so that air can flow between the inside of the inner member and the outside of the outer shell member;
A cooling fan for sucking air from the inner space of the inner member and discharging the air through the air passage portion to the outside or blowing air into the inner space of the inner member through the air passage portion by sucking outside air, ;
A detachment detecting unit for detecting a wearing state of the inner member in a state in which the inner member is written on the user's head and a detaching state in a state of being separated from the user's head; And
And a control unit which operates the cooling fan when the detachable detecting unit detects the worn state, and prevents the cooling fan from operating when the detachable detecting unit detects the detaching state. Hard hat with fan. The method of claim 1,
The air passage portion is formed in the inner member,
Hard hat having a cooling fan, characterized in that the inner member is formed as an integral member. The method of claim 1,
One side and the other side of the shell member is provided with first and second jaw strap members, respectively
Each end of the first and second jaw strap members is separable from each other,
The detachment detecting unit includes the first and second jaw strap members,
The detachable detecting unit is a safety helmet with a cooling fan, characterized in that each of the end of the first chin strap member is coupled to each other in the wearing state, and detects the separated state in the detached state. The method of claim 1,
The detachable detecting unit includes a motion detecting sensor capable of detecting a movement,
The detachable detecting unit includes a cooling fan configured to detect the motion detection sensor as the wearing state when the motion detection sensor detects movement, and detect the detachment state when the motion detection sensor does not detect the movement. One hard hat. The method of claim 1,
Wherein the detachment detection unit includes a humidity sensor capable of measuring humidity,
Wherein the detachment detection unit senses the wearing state when the humidity value of the inner space of the inner member measured by the humidity sensor is equal to or greater than a predetermined humidity value and detects the inner space of the inner member measured by the humidity sensor Wherein the detection unit detects the detachment state when the humidity value of the cooling fan is less than a preset humidity value. The method of claim 1,
The detachment detecting unit includes a button provided on one side of the inner surface of the inner member,
The detachable detecting unit is configured to sense that the button is pressed by the user's head as the wearing state, and when the button is not pressed, it is configured to detect it as the detached state. The method of claim 1,
The detachment detecting unit includes a pressure sensor provided on the inner surface of the inner member to measure the pressure,
The detachable detecting unit is configured to detect the pressure sensor when it is in contact with the user's head as the wearing state, and when there is no contact with the pressure sensor, detect it as the detaching state. Hard hat equipped with. The method of claim 1,
The detachable detecting unit may include an infrared transmitting unit provided at one side of the inner surface of the inner member and an infrared receiving unit provided at the other side of the inner surface of the inner member to detect infrared rays generated by the infrared transmitting unit. Including,
The detachment detecting unit detects the wearing state when the infrared rays generated by the infrared transmitter are not detected by the infrared receiver, and detects the detached state when the infrared rays generated by the infrared transmitter are detected by the infrared receiver. Hard hat having a cooling fan, characterized in that the configuration. The method of claim 1,
Wherein the inner member comprises an inner member and an intermediate member,
Wherein the penetrating portion is provided in the inner skin member,
Wherein the air passage portion is provided in the intermediate member,
Wherein the intermediate member is formed as a member separate from the inner member and the outer member. 10. The method of claim 9,
Wherein the intermediate member is at least one of styrofoam, EPP, and PE foam sponge. 10. The method of claim 9,
The endothelium material may be made of polycarbonate (PC), polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), phenol resin (PF), polystyrene (PS), ABS resin, melamine, Wherein the cooling fan has at least one cooling fan. The method of claim 1,
Hard hat having a cooling fan, characterized in that the diameter of each through hole constituting the through portion provided in the endothelial member is 1 mm or more and 30 mm or less. The method of claim 1,
At least one of a temperature sensor and a humidity sensor is provided at one side of the inner member,
The control unit is a cooling fan, characterized in that configured to adjust the rotational speed of the cooling fan by comparing with a preset value after calculating the temperature or humidity by the signal received from the temperature sensor or humidity sensor Hard hat equipped with.

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