JPH0827610A - Headgear furnished with cooling radiator fan - Google Patents

Abstract

PURPOSE:To obtain a cooling headgear excellent in practicability, capable of supplying sufficiently cooled and comfortable air to the front head and face even under the blazing sun. CONSTITUTION:This headgear is so designed that a cooling plate 4 is attached to a headgear 1 so as to be located against the front head, an axial flow fan motor 5 is set up against a penetrating hole 7 provided on a hook 6, a heat sink 8 having a cooling radiator 8a provided with an air stream passage 3 radiating the heat of a heat storage section 8b with the air flow fed through the hole 7 is provided, and a Peltier element 9 is provided in between the rear end faces of the heat storage section on the surface of the cooling plate.

Description

Detailed Description of the Invention [Industrial applications]

[0001] The present invention relates to a hat in which a Peltier element is incorporated into the hat to cool the forehead, and particularly, a hat having a sufficient cooling effect even under hot weather.

[0002]

2. Description of the Related Art A cooling cap, in which a cap and a Peltier element are combined to cool the forehead of a person wearing the cap, is disclosed in Japanese Patent Application Laid-Open No. 4-194004 of the present applicant.
It is known in Japanese Patent Publication No. 60-94609.

In these cooling hats, a cooling plate is provided on the portion of the hat which comes into contact with the frontal head of the person wearing the hat, a Peltier element is arranged on the surface thereof, and a heat radiating plate is further mounted on the surface thereof. It is composed.

According to such a cooling cap, since the back surface of the Peltier element is cooled, the cooling plate in contact with it becomes cold, and the forehead in contact with the cooling plate feels cold.
If you wear this cooling hat, you will feel cool even in the suburbs. Therefore, this cooling hat gives a comfortable feeling to those who play golf or other sports.

[0005]

Although the above-mentioned cooling cap has sufficient advantages, there are many points that still have to be improved in order to put it into practical use, and its practical use has not been improved so far. It has not been put to practical use.

One of the reasons for this is that when the cooling cap is used in the hot sun, the cooling plate and the heat radiating plate are also affected by the direct sunlight, and if the cooling plate is slightly cooled by the Peltier element, it is cooled. It is not possible to cool it to a comfortable temperature at which the person wearing the hat feels cool enough.

To further explain this, the surface of the Peltier element in contact with the cooling plate becomes cold, while the surface of the Peltier element in contact with the heat dissipation plate becomes hot. However, the Peltier element surface, which is heated, is simply attached with a heat radiation plate made of aluminum or the like, and heat is saturated immediately, and sufficient heat cannot be radiated, so that the Peltier element surface in contact with the cooling plate is insufficient. As a result, the cooling plate cannot be cooled sufficiently, and the person wearing the cooling hat cannot expect a comfortable coolness to feel that it is sufficiently cool. In other words, only knowing the action of the Peltier element, no theoretical pursuit was made, and as a result, a cooling mechanism having a suitable structure was not configured, and a practical cooling cap was not configured. .

Another reason is that the Peltier device is expensive and the cooling hat is also expensive, but on the other hand, the fact that sufficient comfort cannot be expected in view of the price hinders practical use of the cooling hat. It was

[0009]

The object of the present invention is to attach a cooling plate to a hat such that a cap, hat, visor or the like is attached to the hat so as to face the forehead of the person wearing the hat. A through hole is provided in the flange provided on the front surface of the hat, an axial fan motor is provided at the surface of the flange facing the through hole, and the fan is fed by the axial fan motor through the through hole. It has a cooling radiator portion formed with a draft passage portion such as a slit for radiating heat by the wind and sending it toward the back surface of the collar, and the cooling radiator portion is made to face the through hole so that the cooling radiator portion faces the through hole. A hat provided with a heat sink attached to the back surface, and a cooling radiator fan provided with a Peltier element between the front surface of the cooling plate and the rear end surface of the heat storage portion formed at the rear of the cooling radiator. Can be achieved by providing.

Here, a through hole is provided in the collar, and the cooling radiator part of the axial flow fan motor and the heat sink of the heat sink are opposed to each other through this through hole, and the cooling radiator part is
The rear side of the cooling radiator part is that the airflow passing part such as a slit is formed to dissipate the heat from the air sent by the axial fan motor and send it toward the back side of the collar to enhance the heat dissipation effect. The heat sink structure has a heat storage part to allow the cooling plate to be sufficiently cooled by the (hat side) Peltier device. The Peltier device is arranged between the rear end face of the heat storage part and the cooling plate. The point is that

Another problem is that a cutout is formed in a portion of the axial fan motor facing the front surface of the hat, and the air blown from the cutout by the axial fan motor is blown into the hat. Forming a through hole in the hat to take in
This can be achieved by providing a guide that guides the wind flowing from the axial fan motor into the hat through the cutout portion and the through hole to the front face facing surface of the cooling plate.

Here, unlike the normal axial fan motor, the axial fan motor has a notch formed in a portion facing the front surface of the hat, and the axial fan motor described above is used. The cap has a through hole for taking in the wind that flows through the notch into the cap, and the air flows from the axial fan motor into the cap through the notch and the hole. It is characterized in that a guide is provided to guide the incoming wind to the frontal surface of the cooling plate.

Another object of the present invention is to achieve the above-mentioned cooling plate by forming a groove portion such as an uneven portion or a knurl for enhancing the cooling effect on the surface facing the forehead.

Another object of the present invention is to achieve the cooling radiator portion by forming a groove portion such as an uneven portion or a knurled portion on the cooling radiator pawl portion facing the flowing air passage portion.

[0015]

Since the dry battery or the solar battery (not shown) is attached to the cap 1 by a known method, when the switch (not shown) of this power supply battery is turned on, the axial fan motor 5 rotates and the cap 1 The air is blown to the cooling radiator portion 8a of the heat sink 8 through the through hole 7 formed in the collar 6 (see FIG. 1).

The blown air is cooled by the radiator 8
Since the airflow passage portion 3 is formed in a, the person wearing the hat 1 through the airflow passage portion 3 [hat wearer] 2
Is washed away in front of the face portion 2a (in front of the back surface portion 6b of the collar 6).

The wind that has passed through the airflow passage portion 3 is cooled by the cooling radiator claws 8d of the cooling radiator portion 8a.
Since the heat stored in b is radiated, the heat generated on the front surface of the Peltier element 9 can be sufficiently radiated and the back surface of the Peltier element 9 can be efficiently cooled, so that the cooling plate 4 can be cooled sufficiently, As a result, comfortable cool air can be applied to the forehead 2a. Moreover, on the cooling radiator-claw 8d,
Groove portion 8e (see FIG. 4) on the side surface portion facing the airflow passage portion 3
Since the groove 8e is formed, the cooling effect can be further enhanced by the groove 8e.

When the Peltier element 9 is powered on (not shown), the cooling plate 4 is cooled by the Peltier element 9. Here, the axial fan motor 5 (actually, the venturi case 5b of the axial fan motor) has the notch 5a formed on the rear surface portion facing the front surface 1a side of the cap 1. By the impeller 5c of the axial fan motor 5, the air is blown to the side of the through hole 7 while the air is blown to the outside through the notch 5a (see FIG. 1).

Since the guide 10 is formed here, the air blown out from the notch portion 5a is guided by the guide 10 and the through hole 1 formed in the front portion 1a of the cap 1 (including part of the collar 6).
It is guided to the inside of the hat 1 via b and is made to flow to the back surface of the cooling plate 4 (see the arrow in FIG. 1). Since the cooling plate 4 is cooled by the Peltier element 9, the front head 1a facing the back surface portion (front head facing surface) 4b of the cooling plate 4 is cooled.

Here, the front face facing surface 4b of the cooling plate 4 is
The air cooled by the Peltier element 9 (sometimes dew drops may be accumulated) and sent by the axial fan motor 5 not only cools the forehead 1a but also faces the forehead of the cooling plate 4. Since the cold air on the surface 4b is carried to the face portion 2b side, it feels sufficiently cool even under hot weather. Further, since a groove portion 4e (see FIG. 4) is formed on the frontal head-facing surface 4b of the cooling plate 4, the cooling effect can be further enhanced by the groove portion 4e, and comfortable cool air can be provided to the frontal portion 1a and the face portion. 2b can be given.

In order to allow the cooling plate 4 to be sufficiently cooled by the Peltier element 9, the heat sink 8 is provided in the rear portion of the cooling radiator portion 8a in addition to the cooling radiator portion 8a capable of enhancing the heat radiation effect. The heat storage portion 8b is formed so that the heat generated in the front surface portion of the Peltier element 9 can be sufficiently radiated. For this reason, the cooling plate 4 can be sufficiently cooled by the Peltier element 9 so that cool air that is sufficiently comfortable even in hot weather can be provided to the forehead 1a and the face portion 2b.
As a result, a practical cooling cap can be provided.

[0022]

1 is a longitudinal sectional view of a hat having a cooling radiator fan according to an embodiment of the present invention, and FIG.
Shows a top perspective view of the hat, FIG. 3 shows a partial bottom view of the hat, and FIG. 4 is an explanatory view showing the relationship with the axial fan motor, heat sink, Peltier element, and cooling plate. 5 and 6 are explanatory diagrams of the principle of the Peltier device. Below, Figure 1
A cooling cap, that is, a cap provided with a cooling radiator fan according to an embodiment of the present invention will be described with reference to FIGS.

Regardless of the shape as shown in FIGS. 1 to 3, the hat 1 described here includes caps, hats, helmets, visors, etc. having a collar 6 formed on at least the front surface of the hat 1. Including the cap body. Ideally, the hat 1 has a collar 6 protruding slightly forward. The reason is that hot air radiated by the cooling radiator portion 8a described later does not directly hit the face portion 2b.

Although not shown in the figure, the cap 1 has an actual flat 3
As described in JP-A-34021, a solar battery or a dry battery is mounted by an appropriate means, and a power switch (not shown) of the power battery is also mounted by an appropriate means. When the power switch is turned on, the axial fan motor 5 and the Peltier element 9 described later are activated.

A collar 6 is formed on the front surface 1a of the hat 1, and the collar 6 shows the wind blown downward by the axial fan motor 5 as shown by the arrow in FIG. A through hole 7 having a shape and size suitable for flowing in the direction of the back surface portion 6b of 6 is formed.

An axial fan fan is provided on the surface portion 6a of the collar 6 facing the through hole 7 so that air can flow through the through hole 7.
The tape 5 is fixed by an appropriate means. As an easy fixing method, since the axial fan motor 5 has a through hole that penetrates the corner flange in the axial direction for fixing, the through hole is utilized to pass the flange 6 through the flange 6. There is a method of stopping the axial fan motor 5 by using a screw in a screw hole formed in the heat sink 8 to be attached to the back surface portion 6b of the axial flow fan motor 5 according to the present invention. Since it is not the purpose, detailed description is omitted here.

Since it is desirable to use a low-voltage power supply battery as the axial fan motor 5, a DC brushless axial fan motor that is inexpensive and easily available is selected (for example,
Light and thin I.D. There is DCFAN made by Shiko-Giken for 5V). However, in this embodiment, comfortable cool air is provided to the frontal region 2
In order to hit a, the axial fan motor of a general shape is not directly used, but the axial fan motor 5 provided with a slightly modified venturi case 5b is used.

That is, the axial fan motor 5 used in this embodiment has a notch 5a (see FIG. 4) formed on one side of the venturi case 5b. Because of the notch 5a, when (the impeller 5c of) the axial fan motor 5 rotates, not only the lower side but also the notch 5a side as shown by the arrow in FIG. The notch portion 5a faces the front surface portion 1a of the hat 1, and the surface portion 6a of the collar 6 facing the through hole 7 faces the axial portion 7a so that air can flow in the direction of the through hole 7 as described above. 5
Are fixed by an appropriate means (see FIG. 2).

At the boundary between the cap body and the collar 6 of the hat 1, the head 1 of the person (the head) of the person who wears the hat 1 by appropriate means (hereinafter referred to as the hat wearer) 2 faces. The cooling plate 4 is attached so that it exists in the position. For the cooling plate 4, it is preferable to select a material having a high thermal conductivity such as aluminum or its alloy. Further, as shown in FIG. 4, a groove portion 4c composed of a knurl, a slit groove, an uneven portion or the like is formed on the front head facing surface (back surface) 4b of the cooling plate 4 in order to enhance the cooling effect. .

The groove portion 4c serves not only to enhance the cooling effect of efficiently cooling the cooling plate 4 by the Peltier element 9 but also to hold dew droplets attached to the cooling plate 4 there. That is, depending on a certain ambient temperature and humidity, dewdrops may be collected on the frontal head-facing surface 4b of the cooled cooling plate 4. The dewdrops serve to provide more comfortable cool air to the frontal region 2a and the face portion 2b. This is Guide 1 as described later.
The air blown by the axial fan motor 5 by 0 passes between the cooled dew drop surface adhering to the forehead 2a and the forehead facing surface 4b of the cooling plate 4 (see the arrow in FIG. 1). Therefore, cooler cool air is sent to the forehead 2a and the face portion 2b, so that more comfortable cool air can be given. However, if the front face facing surface 4b of the cooling plate 4 is a flat surface, there is a risk that the dew drops may droop drastically. Therefore, also in the sense that the dew drops are held on the front head facing face 4b. 4c
Works effectively.

As shown in FIGS. 3 and 4, the heat sink 8 is composed of a cooling radiator portion 8a and a heat storage portion 8b, and is made of a material having good thermal conductivity such as aluminum or its alloy in order to enhance the heat radiation effect. To form. Before explaining the heat sink 8, the principle of the Peltier element 9 will be described with reference to FIGS. 5 and 6.

FIG. 5 shows a couple of Peltier elements 9,
FIG. 6 shows a Peltier element 9 formed by combining the couples of FIG.

Referring to FIG. 5, the case where the cooling plate 4 is cooled by the coupling of the Peltier element 9 will be described. The cold junction portion for absorbing the heat serves as the cooling plate 4. Here, the power switch of the DC power supply 11 (dry battery or solar battery attached to the hat 1) is turned on and the electric conductor 12
When an electric current is applied to the cooling plate 4, when electrons flow from one semiconductor to the other in the cooling plate 4, the low energy state shifts to the high energy state, and
Are absorbed by electrons in the form of heat. The power supply 11 supplies the energy for causing this electron flow, and the heat sink 8 made of, for example, aluminum or magnesium, which is a hot junction and is excellent in thermal conductivity, has an axial fan motor 5. Releases extra heat to the outside.

As described above, the Peltier element 9 is a solid-state heat pump, does not use liquid or gas, and has no moving parts. Therefore, it is possible to construct an electron-electric heat conversion device very easily. There is.

In FIG. 5, reference numerals 13-1, 13-
Numeral 2 is a bismuth telluride semiconductor, and is composed of two types of elements, an excess electron N type (N type semiconductor) 13-1 and an electron deficient P type (P type semiconductor) 13-2 due to impurity doping. There is. Reference numeral 14 indicates an electric insulator such as alumina / ceramics, and reference numeral 15 indicates a direction in which a carrier current and a heat flow flow.

That is, the Peltier element 9 includes an excess electron N type (N type semiconductor) 13-1 and an insufficient electron P type (P type semiconductor).
13-2 is formed by joining metal pieces, that is, electric conductors 12, and the direct current of the DC power supply 11 is changed from excess electron N type (N type semiconductor) 13-1 to insufficient electron P type (P type semiconductor) 13-2.
Flow into the excess electron N-type (N-type semiconductor) 13-1, in the direction opposite to the direction of the current, the electron deficiency P-type (P-type semiconductor) 13
-2, heat transfer occurs in the forward direction and the cooling plate 4
Are cooled and take heat from their surroundings. When the heat of the electric conductor 12 on the high temperature side, that is, on the axial flow fan motor 5 side is efficiently radiated, the heat is continuously pumped from the low temperature side to the high temperature side.

The heat formed by the cooling plate 4 serving as a cold junction as described above is pumped to the heat sink 8 serving as a hot junction, and the amount thereof is the carrier current flowing through the circuit and the coupler. Proportional to the number.

Therefore, the Peltier element 9 that is actually used
Is a module in which the couplers of FIG. 5 are combined as shown in FIG. 6, and is electrically connected in series and thermally connected in parallel.

It is necessary to design the heat sink 8 after knowing the principle of the Peltier device 9 as described above. In the conventional case, a cooling plate is simply arranged on one surface of the Peltier element,
Since only the cooling plate was arranged on the other surface,
It was not possible to construct a cooling hat that would give a practical effect in hot weather.

That is, when a power switch (not shown) is turned on, the back surface (the surface facing the cooling plate 4) of the Peltier element 9 becomes cold, and the cooling plate 4 is cooled, but the surface of the Peltier element 9 (the heat storage portion 8b). The surface facing the rear end surface 8c) becomes hot. If the heat of the surface portion of the Peltier element 9 is not radiated, the Peltier element 9 will be in a saturated state, and the back surface of the Peltier element 9 cannot be cooled. For this reason,
The tosink 8 must have a design structure that exhibits a sufficient heat dissipation effect.

The heat sink 8 has a cooling radiator portion 8a formed in a portion facing the through hole 7, and a portion extending to a portion in contact with the Peltier element 9 behind the heat sink portion 8a is a heat storage portion 8b. , The thickness increases from the side to the rear (see FIG. 4), that is, the Peltier element 9
The volume of the heat storage portion 8b is increased so as to sufficiently absorb the heat generated in the surface portion of the above, and the heat storage portion 8b is formed so that heat saturation does not occur in this portion 8b.

The cooling radiator section 8a is a cooling radiator.
The airflow passage portion 3 such as a through hole or a slit is formed between the claws 8d. Further, in order to enhance the heat radiation effect, grooves 8e such as irregularities and knurls are formed on the side surface of the cooling radiator claw 8d facing the flowing air passage portion 3.

In the heat sink 8 as described above, the cooling radiator portion 8a is opposed to the through hole 7 and the back surface portion 6 of the collar 6 is provided.
Fix at b. At the same time, the Peltier element 9 is placed in contact between the rear end surface 8c of the heat storage section 8b and the surface section of the cooling plate 4. Since the Peltier element 9 is in contact with this back surface and the surface portion 4a of the cooling plate 4, it cools the cooling plate 4 and the front surface is in contact with the rear end surface 8c of the heat storage portion 8b. The heat generated on the surface can be absorbed by the heat storage section 8b and released by the cooling radiator section 8a. Since the through hole 7 formed in the collar 6 is in front of the collar 6,
The wind radiated through the airflow passage portion 3 is not directly contacted with the face portion 2b, but is emitted considerably in front of the face portion 2b.

In order to let the air blown by the axial fan motor 5 pass between the cold dew drop surface adhering to the forehead 2a and the forehead facing surface 4b of the cooling plate 4, the above-mentioned shaft is used. A cutout portion 5a is formed in a portion (venturi case 5b) of the flow fan motor 5 that faces the front surface portion 1a of the hat 1 and is blown from the cutout portion 5a by the axial flow fan motor 5. Through-hole 1 for capturing wind coming into hat 1
b is formed on the front surface 1 a of the hat 1. In FIGS. 1 and 2, the through hole 1b is formed so as to extend to the brim 6.

A guide 10 (FIG. 1) which guides the wind flowing from the axial fan motor 5 into the cap 1 through the cutout portion 5a and the through hole 1b to the frontal head-facing surface portion 4b of the cooling plate 4.
(See FIG. 2, in order to reveal the through hole 1b. The guide 10 is shown by a dotted line). For this purpose, the guide 10 is formed to extend into the cap 1 through the through hole 1b. The guide 10 may be of any shape as long as it can achieve its purpose. Since the guide 10 is provided, the wind flowing out from the cutout portion 5a does not leak to the outside, and the frontal head 2a and the frontal head-facing surface 4 of the cooling plate 4 pass through the through hole 1b.
It passes between the cold dew drops adhering to b (see FIG. 1). As a result, comfortable cool air can be obtained from the forehead 2a and the face 2
Bent to b.

[0046]

[Effects] According to the present invention, it is possible to construct a highly practical cooling cap that can blow comfortable cold air that is sufficiently cold even in hot weather to the frontal region and the face.

[Brief description of drawings]

1 is a longitudinal sectional view of a hat having a cooling radiator fan according to an embodiment of the present invention. 2 is an external perspective view of the hat. 3 is a partial bottom view of the same hat. 4 is an explanatory view showing the relationship with the axial fan motor, heat sink, Peltier element and the cooling plate. 5 and 6 are explanatory diagrams of the principle of the Peltier device.

[Explanation of reference symbols] 1 hat 1a front face 1b through hole 2 person (head of) wearing a hat 2a frontal region 2b face 3 air flow passage 4 cooling plate 4a front face 4b front facing face (back) 4c groove part 5 axial fan motor 5a notch part 5b venturi case 5c impeller 6 collar 6a front surface part 6b back surface part 7 through hole 8 heat sink 8a cooling radiator part 8b heat storage part 8c rear part 8e cooling part 8d cooling part 8d 9 Peltier element 10 Guide 11 DC power source 12 Electric conductor 13-1 Excess electron N type (N type semiconductor) 13-2 Insufficient electron P type (P type semiconductor) 14 Electrical insulator 15 Carrier current, direction of heat flow

Claims (4)

[Claims] 1. A cooling plate (4) is attached to a hat (1) so as to face a forehead (2a) of a person (2) who wears the hat (1) such as a cap, a hat, and a visor. , The through hole (7) in the collar (6) provided on the front surface (1a) of the hat (1)
Is provided, an axial fan motor (5) is provided on the surface portion (6a) of the collar (6) facing the through hole (7), and the axial fan motor is provided through the through hole (7). There is a cooling radiator portion (8a) formed with a draft passage portion (3) such as a slit for radiating heat by the air sent by (5) and sending it toward the back surface portion (6b) of the collar (6). In addition, a heat sink (8) attached to the back surface portion (6b) of the collar (6) is provided with the cooling radiator portion (8a) facing the through hole (7), and the cooling plate ( Cooling characterized in that a Peltier element (9) is provided between the surface part (4a) of 4) and the rear end face (8c) of the heat storage part (8b) formed at the rear part of the cooling radiator part (8a). Radiator-a hat with a fan. 2. A notch (5) at a portion of the axial fan motor (5) facing the front surface (1a) of the cap (1).
a), and a through hole (1b) for taking in the wind blown from the notch (5a) by the axial fan motor (5) into the hat (1) in the hat (1). The wind that flows into the cap (1) from the axial fan motor (5) through the cutout portion (5a) and the through hole (1b) faces the frontal part of the cooling plate (4). Hat with a cooling radiator fan according to claim 1, characterized in that it is provided with a guide (10) leading to the surface (4b). 3. The cooling plate (4) is characterized in that a surface (4b) facing the forehead (2a) is formed with a groove (4c) such as an uneven portion or a knurl for enhancing a cooling effect. A hat provided with the cooling radiator fan according to claim 1 or 2. 4. The cooling radiator claw (8d) facing the flowing air passage part (3), the cooling radiator part (8a).
A hat provided with a cooling radiator fan according to any one of claims 1 to 3, wherein a groove (8e) such as an uneven portion or a knurling is formed in the portion.