JPH10331019A - Apparatus for cooling of industrial safety cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for cooling of an industrial safety cap capable of effectively cooling the head without disturbing operations. SOLUTION: This apparatus 10 for cooling of an industrial safety cap is capable of automatically operating a fan 14 with a battery when turning on a power source of the apparatus 10 for cooling by an operator, taking in outside air from air suction ports 12, cooling the air blasted to the side of a cold sink 16 with a Peltier module 15, passing the air through an extension pipe 7 fitted to a discharge outlet 11 for the cooling air and a pipe 6 arranged in the safety cap, discharging the air from an opening of the end 6a of the pipe 6 to the interior of the safety cap, controlling the temperature of the cooling air with a controller so as to attain the target temperature set with a variable resistor connected to an operating means, on the other hand, taking away the heat on the heat radiant surface of the Peltier module 15 with the air blasted to the side of a heat sink 17 and discharging the resultant air from discharging outlets 13 for warm air provided on the lateral face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for an industrial safety hat for cooling the inside of the safety hat for protecting the head from falling objects and flying objects.

[0002]

2. Description of the Related Art Conventionally, in construction sites and the like, a safety hat for workers (industrial use) has been used to protect workers' heads from falling from high places, falling materials from high places, and flying objects. Safety hat). The type, performance, impact absorption, voltage resistance, water resistance, flame retardancy, structure, appearance, material, etc. of the safety cap are specified by JIS (Japanese Industrial Standards).

[0003]

When the above-mentioned safety cap is worn, for example, in hot summer sun, the inside of the safety cap becomes hot and humid, which causes discomfort and distracted attention. There were drawbacks. However, since the safety cap described above has a standardized structure, appearance, strength, etc., the number and size of the cap are severely restricted even if a hole for ventilation is formed in the cap body. It is difficult to change. Therefore, it is conceivable to attach some kind of cooling device to cool the inside of the safety hat, that is, the worker's head, but in order to do so without impairing workability, miniaturization and weight reduction are indispensable. Until then, there was a problem that practical application was difficult.

Accordingly, an object of the present invention is to provide a cooling device for an industrial safety hat that can cool the inside of the safety hat without impairing the workability of the worker.

[0005]

To achieve the above object, a cooling device for an industrial safety hat according to the first aspect of the present invention comprises a power storage means for storing electric power, an external air intake, and a head of an operator. Air blowing means for blowing air inside the safety hat for protecting the
Cooling means that operates by the current supplied from the power storage means and cools the air blown by the blower means in the process of reaching the inside of the safety hat, is provided separately from the safety hat, It is characterized by being worn on clothes of an operator.

In a preferred embodiment, when a current is supplied from the power storage means to the cooling means, a control means for controlling the current value may be provided.

In a preferred embodiment, the apparatus further comprises setting means for setting a target temperature inside the safety hat, wherein the control means controls the cooling in accordance with a set value of the setting means. The current value to the means may be controlled.

In a preferred embodiment, the control means may turn on / off a current supplied from the power storage means to the cooling means.

In a preferred embodiment, the control means may continuously vary the current supplied from the power storage means to the cooling means.

Further, as a preferred embodiment, for example, as set forth in claim 6, power generation means for generating power by sunlight may be provided, and the power storage means may store the power generated by the power generation means. .

[0011] In a preferred embodiment, the power generation means may be installed on a heat protection sauce attached to an edge of the safety hat, for example.

In a preferred embodiment, the power generation means may be installed on a work clothes worn by an operator, for example, as described in claim 8.

In a preferred embodiment, the air from the blowing means may be introduced into the safety cap via a flexible pipe.

In a preferred embodiment, the cooling means is a Peltier module in which an N-type semiconductor and a P-type semiconductor are joined by a metal piece and cooled by one of the metal pieces by DC current. It may be.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below as an embodiment applied to an industrial safety hat with reference to the drawings.

A. Configuration of Example A-1. FIG. 1 is a side sectional view showing the structure of a safety hat and the structure of a cooling device according to an embodiment of the present invention. FIG. 2 is a conceptual diagram showing the appearance of the cooling device. In FIG. 1, reference numeral 1 denotes a cap body, and an eave 2 is provided around the cap body 1 to avoid sunlight and rain. A shock absorbing liner 3 for absorbing a shock and protecting the head of the worker is provided inside the cap body 1, and the shock absorbing liner 3 is constituted by a plurality of belts. A wearing body 4 for fixing and closely attaching the cap body 1 to the head is provided. The wearing body 4
Is provided with a chin strap 5.

A groove is provided on the rear side of the shock absorbing liner 3, that is, on the rear side of the safety hat.
A flexible pipe 6 is arranged. The pipe 6
Is open at the top of the cap body 1 with the lower side (the head of the worker) facing, and the other end 6b is extended to the outside of the cap body 1, and the end 6b Is provided with a connector 6c for connecting to the extension pipe 7. The extension pipe 7 extends to a belt worn on the waist of the worker. At one end 7a of the extension pipe 7, a connector 7b for connecting to the connector 6c is provided. The other end 7c of the extension pipe 7 is fitted to a cooling air outlet 11 of a cooling device 10 mounted on a belt (not shown).

Next, as shown in FIG. 2, the cooling device 10 is composed of a box-shaped housing, and has an intake port 12 for taking in external air at the bottom, and air heated by the heat radiated to the side. Is provided with a warm air discharge port 13 for discharging air. Further, inside the cooling device 10, a fan 14, a Peltier module 15, a cold sink 16, a heat sink 17, a controller (electronic circuit: described later), a battery, and the like are provided.

The fan 14 is driven by a battery,
External air is taken in from the air inlet 12 and blown to both the cooling surface and the heat radiation surface of the Peltier module 15. In this embodiment, the fan 14 is used as the blowing means. However, the present invention is not limited to this, and a pump or a blower may be used as long as it can take in external air and blow air into the safety hat. The Peltier module 15 also cools on one side and dissipates heat on the other side, also by direct current from the battery. In the illustrated example, a cold sink 16 is provided on the cooling surface, and a heat sink 17 is provided on the heat radiation surface. In other words, the fin provided on the cooling surface functions as a cold sink, and the fin provided on the heat radiation surface functions as a heat sink.

The cold sink 16 is a fin made of a member having good heat conduction for cooling the air supplied by the fan 14 more efficiently. Similarly, the heat sink 17 is a fin made of a member having good heat conduction for more efficiently dissipating heat on the heat dissipation surface of the Peltier module 15.

On the back of the cooling device 10, hooks 20 for engaging with the waist belt of the worker and fixing the device are provided.
Is provided. Furthermore, in the upper part of the cooling device 10,
As shown in FIG. 2, an operator 21 for adjusting the temperature of the cooling air discharged into the safety hat is provided.

A-2. Basic wiring diagram of electric system FIG.
FIG. 3 is a circuit diagram showing basic electric wiring for explaining the principle of heating. The Peltier module 15 and the battery described above have an electrical connection relationship shown in FIG. 3, the Peltier module 15 includes N-type and P-type semiconductors 15a and 15b as shown in FIG.
These are thermoelectric cooling elements joined by c, 15d, and 15e.
A battery 22 is connected to the metal pieces 15 d and 15 e of the Peltier module 15.
A DC current flows through the Peltier module 15 by the stored power.

In the Peltier module 15, when a direct current is passed from the N-type semiconductor 15a to the P-type semiconductor 15b, heat moves in the direction opposite to the current direction in the N-type and in the forward direction in the P-type. Upper metal piece 15 shown
c is cooled and deprives the surroundings of heat. When the heat on the high-temperature side (lower metal pieces 15d, 15e) is efficiently dissipated, the heat is continuously pumped from the low-temperature side to the high-temperature side. Further, the direct current is supplied to the P-type semiconductor 15b.
When flowing into the N-type semiconductor 15a from above, the cooling and heat radiation are reversed, and the lower metal pieces 15d and 15e shown in the figure are cooled,
It will take away heat from the surroundings. In the present embodiment, either the upper metal piece 15c or the lower metal pieces 15d and 15e shown may be used as the cooling surface or the heat radiation surface, and may be determined in the direction of the direct current. Actually, the magnitude of the DC current flowing through the Peltier module 15 is controlled using a controller described later.

A-3. Next, FIG. 4 is a block diagram showing the configuration of the control system according to the embodiment of the present invention. 1 to 3 are denoted by the same reference numerals, and description thereof is omitted. In the figure, a controller 23 controls a DC current supplied from a battery 22 to a Peltier module 15 in accordance with a resistance value of a variable resistor 21a connected to an operator 21.
The fan 14 is automatically operated by the battery 22. Note that the controller 23 is connected to the variable resistor 2.
The DC current supplied from the battery 22 to the Peltier module 15 may be turned on / off according to the resistance value of 1a. Alternatively, the controller 23 may continuously vary the DC current supplied from the battery 22 to the Peltier module 15 according to the resistance value of the variable resistor 21a.

B. Next, the operation of the cooling device according to the embodiment of the present invention will be described. When an operator turns on the power of the cooling device 10,
The fan 14 is automatically operated by the battery 22, and external air is taken in from the air inlet 12. The air blown to the cold sink 16 side is the Peltier module 1
The pipe 6 is cooled by the cooling air outlet 5, and is discharged from an opening at one end 6 a of the pipe 6 through an extension pipe 7 fitted to a cooling air outlet 11 and a pipe 6 provided in a safety helmet. The temperature of the cooling air is controlled by the controller 23 so as to reach the target temperature set by the variable resistor 21a connected to the operator 21. On the other hand, the air blown to the heat sink 17 removes the heat of the radiating surface of the Peltier module 15 and is discharged from the warm air outlet 13 provided on the side surface. Thereby, the temperature inside the safety hat can be set to an appropriate temperature (target temperature), and discomfort and distraction are reduced. Further, in the cold sink 16, when the air taken in from the outside is cooled, the water condenses, so that the humidity of the air blown into the safety hat is removed. As a result, since dry air is sent to the safety cap, discomfort can be more effectively removed.

C. Modification Next, a modification of the present invention will be described. Here, FIG.
FIG. 6 is a conceptual diagram showing a part of the configuration of a safety hat cooling system according to a modification of the present invention. FIG. 7 is a block diagram showing a configuration of a control system according to a modified example of the present invention. In FIG. 7, parts corresponding to those in FIG. 4 are denoted by the same reference numerals, and description thereof is omitted. In FIG. 5, a solar cell 26 is usually arranged on a heat protection sauce 25 attached to a safety hat. In FIG. 6, the vest 27 worn by the worker is shown.
The solar cell 26 is arranged. The solar cell 26 is
As shown in FIG. 7, the battery 22 is connected in parallel, generates power by irradiating sunlight, and charges the battery 22. Note that, in reality, the battery 22
It is desirable to control charging / discharging in accordance with the remaining amount of power and the amount of power generated by the solar cell 26. In this case, a charge controller is provided between the battery 22 and a load (fan, controller, etc.), and the battery 22 is always charged with power from the solar cell 26 when not operating, and the power of the battery 22 is loaded when operating. Is controlled to be supplied to

When the temperature inside the safety cap becomes high, for example, in hot summer weather, the operator operates the variable resistor 21 to set a target temperature. The controller 23 controls the direct current from the battery 22 to the Peltier module 15 so that the target temperature set by the variable resistor 21 is attained. In the Peltier module 15, the cooling degree of the metal pieces disposed inside is controlled by the DC current controlled by the controller 23 so that the target temperature is maintained inside the safety hat. Thereby, the temperature inside the safety hat can be set to an appropriate temperature (target temperature), and discomfort and distraction are reduced.

In the embodiment described above,
By providing a display unit and displaying the set temperature, the temperature may be easily set. Further, in the above-described embodiment, the pipe 6 through which the cooled air passes is arranged in the groove provided in the shock absorbing liner 3 inside the safety hat. However, the arrangement method of the pipe 6 is not limited to this. When a groove is provided in advance in 3, the groove may be used. Further, the shape of the opening of the pipe 6 may be changed so that the cooled air is evenly applied to the head of the worker.

[0029]

According to the first aspect of the present invention, in a cooling device which is provided separately from the safety cap and is attached to the clothes of the worker, the outside air is taken in by the blowing means, and the head of the worker is taken. The air blown into the safety cap for protecting the safety section is cooled in the process of reaching the inside of the safety hat by the cooling means operated by the electric current supplied from the power storage means, which impairs the workability of the worker. The advantage is that the inside of the safety hat can be cooled without the need.

According to the second aspect of the present invention, when a current is supplied from the power storage means to the cooling means, the current value is controlled by the control means, which impairs the workability of the operator. Instead, the inside of the safety hat can be cooled, and the temperature inside the safety hat can be easily adjusted to an appropriate temperature.

According to a third aspect of the present invention, there is provided a setting means for setting a target temperature inside the safety hat, wherein the control means controls the cooling means in accordance with a set value of the setting means. Since the current value is controlled, the inside of the safety hat can be cooled without impairing the workability of the worker, and the advantage that the temperature inside the safety hat can be easily adjusted to the appropriate temperature can be obtained. can get.

According to the present invention, the current supplied from the power storage means to the cooling means is turned on / off by the control means, so that the workability of the worker is not impaired. The advantage that the inside of the safety hat can be cooled and the temperature inside the safety hat can be easily adjusted to an appropriate temperature can be obtained.

According to the fifth aspect of the present invention, the current supplied from the power storage means to the cooling means is continuously varied by the control means, so that the workability of the worker is not impaired. This has the advantage that the inside of the safety hat can be cooled and the temperature inside the safety hat can be easily adjusted to an appropriate temperature.

Further, according to the invention of claim 6, there is provided a power generation means for generating power by sunlight, wherein the power storage means comprises:
Since the power generated by the power generation means is stored, power consumption can be suppressed, and there is an advantage that the power can be used for a longer time.

According to the seventh aspect of the present invention, since the power generation means is installed on the heat protection sauce attached to the edge of the safety hat, the operator does not need to attach an extra device or the like. The advantage is that power consumption can be reduced and the device can be used for a longer time.

Further, according to the invention of claim 8, the power generation means is installed on a vest worn by the worker, so that the worker is not required to attach extra devices and the like.
The advantage is that power consumption can be reduced and the device can be used for a longer time.

According to the ninth aspect of the present invention, the air from the blower is introduced into the safety cap through a flexible pipe, so that the workability of the worker is not impaired. The advantage is that the inside of the safety hat can be cooled.

According to the tenth aspect of the present invention, the cooling means is a Peltier module in which an N-type semiconductor and a P-type semiconductor are joined by a metal piece and cooled by one of the metal pieces by a direct current. It is advantageous in that it is excellent in miniaturization and portability, and that the temperature inside the safety hat can be easily adjusted to an appropriate temperature and dehumidification can be performed more easily.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing the structure of a safety hat and the structure of a cooling device according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram illustrating an appearance of a cooling device.

FIG. 3 is a circuit diagram showing basic electric wiring for explaining the principle of the Peltier module according to the embodiment.

FIG. 4 is a block diagram illustrating a configuration of a control system according to the present embodiment.

FIG. 5 is a conceptual diagram showing a configuration of a solar cell according to a modification of the present invention.

FIG. 6 is a conceptual diagram showing a configuration of a solar cell according to a modification of the present invention.

FIG. 7 is a block diagram showing a configuration of a control system according to a modification of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cap body 15 Peltier module (cooling means) 21 Variable resistor (setting means) 22 Battery (power storage means) 23 Controller (control means) 25 Heat protection sauce 26 Solar cell (power generation means) 27 Best

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yutaka Sasaharu 2-25-6 Chuo, Ota-ku, Tokyo Unitech Corporation

Claims (10)

[Claims] 1. An electric storage means for storing electric power, an air blowing means for taking in external air and blowing air into a safety cap for protecting a worker's head, and operating by a current supplied from the electric storage means, Cooling means for cooling the air blown by the blowing means in the process of reaching the inside of the safety hat, wherein the cooling means is provided separately from the safety hat and is attached to a worker's clothes. Industrial safety hat cooling device. 2. The cooling device for an industrial safety hat according to claim 1, further comprising control means for controlling a current value when a current is supplied from said power storage means to said cooling means. 3. A setting means for setting a target temperature inside the safety hat, wherein the control means controls a current value to the cooling means according to a set value of the setting means. The cooling device for an industrial safety hat according to claim 2. 4. The cooling device for an industrial safety hat according to claim 2, wherein said control means turns on / off a current supplied from said power storage means to said cooling means. 5. The cooling device for an industrial safety hat according to claim 2, wherein said control means continuously varies a current supplied from said power storage means to said cooling means. 6. The industrial device according to claim 1, further comprising: a power generation unit configured to generate power using sunlight, wherein the power storage unit stores the power generated by the power generation unit. Safety hat cooling device. 7. The cooling device for an industrial safety hat according to claim 6, wherein the power generation means is installed on a heat protection sauce attached to an edge of the safety hat. 8. The cooling device for an industrial safety hat according to claim 6, wherein the power generation means is installed on work clothes worn by an operator. 9. The cooling device for an industrial safety hat according to claim 1, wherein the air from the blower is introduced into the safety hat through a flexible pipe. . 10. The Peltier module according to claim 1, wherein said cooling means is a Peltier module in which an N-type semiconductor and a P-type semiconductor are joined by a metal piece and cooled by one of the metal pieces by DC current. The cooling device for an industrial safety hat according to any one of the above.