US20160255901A1

US20160255901A1 - Multifunctional safety helmet

Info

Publication number: US20160255901A1
Application number: US15/032,819
Authority: US
Inventors: Seong Nam JEON
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-28
Filing date: 2014-10-10
Publication date: 2016-09-08
Also published as: WO2015064926A1; KR101527288B1; CN105873463A; KR20150048436A

Abstract

The present invention relates to a multifunctional safety helmet. To this end, the multifunctional safety helmet comprises an outer cap and an inner cap inserted into the outer cap, wherein the inner cap includes: a first air passage formed forward and rearward across the upper surface thereof; a cooling fan mounted on the center of the first air passage to blow heat, dissipated from a head, upward in order to transfer the heat toward the first air passage; and an air circulation vent formed on the front side of the first air passage to guide some air toward the forehead.

Description

TECHNICAL FIELD

This invention relates to a multifunctional safety helmet, more specifically to a multifunctional safety helmet that: lowers the temperature of the head by circulating internal air outward through multiple cooling fans mounted on the inner cap to vaporize sweat and absorb the vaporized heat; blocks the external heat by forming a partial air curtain on the face by guiding the air forward and rearward across the head and toward both ears and exhausts it; increases air circulation by combining a baffle to limit the creation of whirlpool by collisions of air transferred from multiple cooling fans, and controls the speed of the cooling fan, and also blocks the electromagnetic waves from the circuit board that controls the cooling fan.

BACKGROUND TECHNOLOGY

In general, the use of safety helmets is mandatory in various major industrial fields to protect the head of worker safely from any shocks and falls.
The focus of safety helmets was mainly given to the durability depending on the working conditions, and the safety helmets are usually made of thin and solid synthetic resins, carbon resins, and etc., but the structure that allows external air to flow into the closed inside of the safety helmets are not available, except in expensive safety helmets equipped with specific functions.
Therefore, the interior portion of the safety helmets used in construction sites and work areas of the factory is maintained at a temperature higher than that of the outside air due to lack of ventilation, so the people who wear safety helmets for long time would suffers headache, thus can't focus on the work, and in worst case, they need to stop the work, which causes lower productivity due to lowered work efficiency and economic loss due to delay of construction.
Due to the above problem, the inside of the helmet gets sweated, especially when the outside air temperature is higher in hot summer season, and sweat flows down toward the face, which blocks the wearer's field of sight and interrupt his operations and works. Due to this reason, there are times when workers do not wear safety helmets, which in turn causes more severe safety incidents.
Considering the problems described above, a “safety helmet with cooling and heating feature (Utility Model No. 286311)” has been suggested previously, but this kind of traditional safety helmets has the structure in which a cooling fan is equipped on the outer cap and a radiator combined on the inner cap. Though it could make the inside of safety helmets cool in the summer, but the sweat emitted from the head couldn't be removed effectively.
And, the traditional outer cap and inner cap couldn't be applied to other safety helmets, which required to buy a costly set comprised of an outer cap and an inner cap.

DETAILED DESCRIPTION OF THE INVENTION

Technical Problems to be Solved

The first objective of this invention, designed to solve the problem, is to provide a multifunctional safety helmet that lowers the temperature of head by vaporizing sweat and absorbing the vaporized heat by circulating internal air through several cooling fans mounted on the inner cap, while blocking external heat by forming air curtain on the face by guiding air forward and rearward across the head and toward both ears and exhaust it.
The second objective of this invention is to provide a multifunctional safety helmet that increases air circulation by combining a baffle to limit the creation of whirlpool by the collision of air transferred from multiple cooling fans, and to block electromagnetic waves from the circuit board that controls the speed of the cooling fan.
The third objective of this invention is to provide a multifunctional safety helmet that allows to apply the inner cap according to the invention to the outer caps of existing safety helmet.

Solution to Problem

The first invention, according to the characteristics to achieve the objective described above, relates to a safety helmet comprised of an outer cap (200) and an inner cap (100) inserted into the outer cap (200), and to this end, the inner cap (100) includes a first air passage (110) formed forward and rearward across the upper surface, a cooling fan (111) installed on the center of the first air passage (110) to transfer heat, dissipated from the head upward to the first air passage (110), and an air circulation vent (113) formed in front of the first air passage (110) that guides some air toward the forehead and circulate it.
The second invention wherein the inner cap (100) according to the first invention can further have several secondary air passages (120) opened to the first air passage (110) leftward and rightward across the upper surface.
The third invention wherein at least one or more of cooling fans (111) according to the first invention can be installed on the first air passage (110), and a primary baffle (112) can be placed at the boundary of the cooling fan to guide the vented air forward and rearward across the first air passage (110) by halving it.
The fourth invention wherein the inner cap (100) according to the first invention can further include a circuit board (130) electrically connected to the cooling fan (111), a voltage controller (131) that controls the voltage to control the speed of the cooling fan (111), and a noise filter (132) that can block electromagnetic waves from the circuit board (130).
The fifth invention wherein the circuit board (130) according to the fourth invention further includes a battery cell (133) and a switch (134) that are electrically connected to control the voltage of the voltage controller (131).
The sixth invention wherein the first air passage (110) according to the first invention can further have a secondary baffle (114) formed to circulate air by guiding some air to the air circulation vent (113), for which the secondary baffle (114) can be placed relatively lower than the height of the first air passage (110) to exhaust some air forwarded through the first air passage (110) and to guide some toward the forehead.

Effects of the Invention

The multifunctional safety helmet according to the invention, wherein the inner cap according to the invention can be easily applied to the outer caps of existing safety helmets with excellent compatibility.
In addition, it helps the wearer to maintain comfortable condition because it can increase air circulation by combining baffles to limit the creation of whirlpool caused by collisions of air transferred from the multiple cooling fans.
And it can also be worn for a longer time, since it can not only control the speed of the cooling fan, but also block electromagnetic waves from the circuit board that controls the cooling fan.
And, it can not only exhaust sweat by circulating sweat and heat, dissipated from the forehead and the head externally, but also can maintain comfortable conditions even in hot and humid summer seasons by blocking the external heat, with air curtain formed on the face by distributing the air forward and rearward across the head and toward both ears to exhaust it.

BRIEF DESCRIPTION OF FIGURES

FIG. 1 is an exploded perspective view illustrating inner cap and outer cap of the multifunctional safety helmet according to the invention,

FIG. 2 is a perspective view that illustrates the inner cap extracted from FIG. 1,

FIG. 3 is a sectional view of FIG. 2,

FIG. 4 is a sectional view of the multifunctional safety helmet according to the invention.

DESCRIPTION

Below, more detailed description about the multifunctional safety helmet according to the invention will be given with reference to the attached figures.
FIG. 1 is an exploded perspective view in which the inner cap is separated from the outer cap of the multifunctional safety helmet according to the invention, FIG. 2 is a perspective view that illustrates the inner cap extracted from FIG. 1, FIG. 3 is a sectional view of FIG. 2, and FIG. 4 is a sectional view of the multifunctional safety helmet according to the invention.
As illustrated in FIG. 1 and FIG. 4, this invention relates to a multifunctional safety helmet that lowers the temperature of the head by circulating internal air through multiple cooling fans mounted on the inner cap and by exhausting it outward so that sweat can be vaporized and the vaporized heat can be absorbed, and blocks external heat by forming an air curtain on the face by guiding air toward the front and back of the head and toward both ears to exhaust it outward, and increases air circulation by combining a baffle to restrict the creation of whirlpool caused by collisions of air transferred from multiple cooling fans, and can not only control the speed of the cooling fans, but also block electromagnetic waves from the circuit board that controls the cooling fan, and allows to apply the inner cap according to the invention to the outer caps of existing safety helmets.
This kind of multifunctional safety helmet mainly comprises of two parts, an outer cap (200) and an inner cap (100) inserted into inside of the outer cap (200).
Here, the inner cap (100) has the structure in which a first air passage (110) is formed forward and rearward across the upper surface.
In the center of the first air passage (110), a cooling fan (111) can be mounted so that the heat dissipated from the head can be transferred upward to the first air passage (110).
Here, at least one or more cooling fans (111) can be installed on the first air passage (110), but in an embodiment of this invention, the suggested number is 2.
At this time, the primary baffle (112) will be placed at the boundary of the cooling fan (111) so that the air transferred through each cooling fan (111) mentioned above can be distributed and guided forward and rearward across the first air passage (110).
The primary baffle (112) described above allows to exhaust air smoothly toward both sides of the first air passage (110) by limiting the creation of whirlpool caused by the collisions of air transferred from multiple cooling fans (111).
In addition, there is an air circulation vent (113) in front of the first air passage (110) to exhaust air to forehead. At this time, the first air passage (110) can have the secondary baffle (114) to circulate air by guiding some air to the air circulation vent (113).
Here, the secondary baffle (114) is placed relatively lower than the first air passage (110) so that some air can be exhausted toward the lower part of the front side of the first air passage (110) and some are guided toward the forehead of the head.
Therefore, some air guided toward the front of the first air passage (110) can be exhausted toward the forehead through the air circulation vent (113) and can lower the temperature of the head by circulating air in a way that the air exhausted toward the forehead vaporizes sweat from the forehead and the head, and the vaporized heat is absorbed. Moreover, the air exhausted downward the front of the first air passage (110) forms an air curtain on the front of the head of head.
Meanwhile, the inner cap (100) can further include multiple secondary air passages (120) opened to the first air passage (110) leftward and rightward across the upper surface, and in an embodiment of this invention, the number of suggested secondary air passages (120) is 2.
The secondary air passage (120) described above is opened as a single set in the left and right side of the inner cap, and guides air up to the ears on the head through the air guide plate (121) extended at the end of the left and right side of the inner cap (100) to exhaust it outward.
Thus, when two cooling fans (111) start to work, the air from the inside of the inner cap (100) is distributed forward and rearward across the first air passage (110) by means of the primary baffle (112), and some air distributed forward and rearward is distributed toward the left and right side through the secondary air passage (120) to exhaust it outward.
Therefore, this helmet has an additional effect that can block the external heat effectively by exhausting sweat in a way of circulating the sweat dissipated from the forehead and the head outward through the air circulation vent (113) and forming an air curtain on the face by distributing air forward and rearward across the head and toward both ears through the first air passage (110) and the secondary air passage (120) to exhaust it outward.
Meanwhile, the inner cap (100) can further have a circuit board (130) electrically connected to the cooling fan (111), and the circuit board (130) can have a voltage controller (131) that controls the voltage to control the speed of the cooling fan (111) and a noise filter (132) to block the emission of electromagnetic waves.
And, the circuit board (130) can further include a battery cell (133) and a switch (134) electrically connected to control the voltage of the voltage controller (131).
In an embodiment according to the invention, a circuit board (130) is mounted on the inner surface of the inner cap (100), but in other examples, it can be mounted on the upper surface of the inner cap.
And, it is desirable that the switch (134) is installed at the end of the left and right side of the inner cap (100) so that they can be operated conveniently with hands.
This switch (134) can be configured not only to turn On/Off the cooling fan (111), but also to adjust the fan speed of the cooling fan (111) at high/middle/low speed by controlling the voltage of the voltage controller (131).
The operation of the multifunctional safety helmet according to the invention shall be described briefly below.
First, if two cooling fans (111) start to work at the same time by means of a switch (134), the air from the inside of the inner cap will be transferred upward through the cooling fan (111).
Then the air from the inside of the inner cap (100) is, by means of the primary baffle (112), distributed forward and rearward across the inner cap through the first air passage (110) to exhaust it outward.
Some air guided toward the front of the first air passage (110) will be guided toward the air circulation vent (113) by the secondary baffle (114) and will be circulated toward outer of the inner surface through the forehead and the crown of the head, and some air will be exhausted downward front of the first air passage, thus toward the front of the head.
And some air guided toward the front of the first air passage (110) will be distributed toward the left and right side of the inner cap (100) through the secondary air passage (120) and exhausted toward both ears on the head.
And, the air guided toward the back of the first air passage (110) will be exhausted to the back of the head.
At this time, some air guided toward the back of the first air passage (110) will be distributed toward the left and right side of the inner cap (100) through the secondary air passage and exhausted toward both ears on the head.
Here, because each of the secondary air passages (120) are open to each other as a set at the left and at the right side of the inner cap, the air can be guided upward to the ears on the head through the air guide plate (121) to exhaust it outward.
Therefore, it allows to maintain comfortable condition even in summer seasons because it can block external heat by forming an air curtain on the face by circulating the sweat or heat, dissipated from the forehead and the head, through the air circulation vent (113) and by exhausting it outward, and by distributing the air forward and rearward across the head and toward both ears through the first air passage (110) and the secondary air passage (120) to exhaust it outward.
In an embodiment of this invention, the number of cooling fans suggested is 2, but in addition to this, it goes without saying that the number of cooling fan can be 1, 3 arranged in serial at the first air passage in a form of serial arrangement, or 4 arrange in parallel at the center of the first air passage.
Though the number of the secondary air passages suggested in this embodiment according to the invention is 2, it can be 1, 3, or 4.
And, this invention can be implemented to vary the speed of the cooling fans minutely using a dial method in addition to using the switches.
And, this invention can be implemented to circulate air inward and outward by differentiating the cooling fans according to user's selection.
It should be also noted that the embodiment specified in this specification and the configuration illustrated in the figures are just examples of most desirable embodiments of this invention, and do not represent all the technical thoughts of this invention, so at the time of the application, there can be various equivalents and variable examples that can replace those.

Claims

1. A multifunctional safety helmet comprising of an outer cap and an inner cap inserted into the outer cap, wherein the inner cap includes a first air passage formed forward and rearward across the upper surface, a cooling fan mounted on the center of the first air passage that transfers the heat dissipated from the head upward up to the first air passage, and an air circulation vent formed in the front of the first air passage that guides some air toward the forehead to circulate it.

2. A multifunctional safety helmet according to claim 1, wherein the inner cap further includes multiple secondary air passages formed leftward and rightward across the upper surface, open to the first air passage.

3. A multifunctional safety helmet according to claim 1, wherein the number of cooling fans installed on the first air passage can be as many as one or more, and a primary baffle is formed at the boundary of the cooling fan to halve air to guide it forward and rearward respectively through the first air passage.

4. A multifunctional safety helmet according to claim 1, wherein the inner cap further includes a circuit board electrically connected to the cooling fan, and the circuit board can further have a voltage controller to control the voltage to control the speed of the cooling fan and a noise filter that can block electromagnetic waves.

5. A multifunctional safety helmet according to claim 4, wherein the circuit board further includes a battery cell and a switch electrically connected to control the voltage of the voltage controller.

6. A multifunctional safety helmet according to claim 1, wherein the first air passage further can include a secondary baffle placed relatively lower than the height of the first air passage to circulate some air by guiding it to the air circulation vent to exhaust some air toward the front side through the first air passage and to guide some air toward the forehead.