JPH0444009B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a helmet worn to protect the head, and particularly to a helmet equipped with a cooling device capable of forced cooling.

(Prior Art) Helmets used in motorcycles and the like include an outer shell, an inner cushioning liner, and pads for making contact with the human head more flexible. In such a helmet, the temperature inside the helmet may increase at high temperatures. In order to eliminate discomfort under such conditions, a ventilation hole is provided in the helmet shell, and the ventilation hole is connected to a passage formed in the liner to draw outside air into the helmet. This is so-called natural ventilation or natural cooling.

(Problems to be Solved by the Invention) However, such natural ventilation or natural cooling has a limit, and in the case of a vehicle helmet, no effect can be expected when the vehicle is stopped.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a helmet that can provide appropriate cooling even when the vehicle is stopped, and can eliminate the wearer's discomfort caused by high temperatures or high humidity.

(Means and effects for solving the problem) In order to achieve this object, according to the present invention,
The helmet is composed of an outer shell 1, an inner pad 19, and a liner 18 sandwiched between the shell 1 and the pad 19. A recess 18a is provided in the area facing the forehead near the edge of the helmet, the pad 19 is extended to the edge of the recess 18a, the cooling pad 5 is buried in the recess 18a via a conductive bracket 16, and the cooling pad 5 is The forehead contact surface of No. 5 is the pad No. 1.
The thickness of the cooling pad 5 is set so as to be substantially flush with the head contact surface of the electronic cooling element 1 which releases and/or absorbs heat by supplying electric current.
2, thermally connecting the electronic cooling element 12 and one or both of the cooling pad 5 and the heat sink 2, and setting the cooling pad 5 on the low temperature side and the heat sink on the high temperature side. and be prepared.

According to such a configuration, firstly, the electronic cooling element 12 can absorb the heat inside the helmet and release the heat to the outside of the helmet.
Even if the cooling pad 5 is arranged near the edge of the helmet, it is possible to prevent the helmet from being dragged to the upper part of the helmet due to friction with the forehead when putting on the helmet.

(Embodiments of the invention) Examples of the invention will be described below with reference to the accompanying drawings. Note that the same reference numerals in each figure indicate similar objects.

FIG. 1 shows a helmet according to an embodiment of the present invention, in which the structure inside and outside the shell 1 and within its thickness is transparently shown. That is,
On the outside of both jaws of the shell 1, a heat dissipation plate 2, which is formed integrally with the shell 1 or separately, is arranged. A fin 3 for heat radiation is formed on the outer surface of the heat sink 2, and two heat conduction pipes 4 arranged substantially parallel to each other extend from the inner surface. This portion of the heat sink 2 is equipped with an electronic cooling element as described later. The heat conduction pipe 4 is well-known, and is designed so that when a small amount of liquid sealed inside is heated, the latent heat when it evaporates is transmitted to each part of the pipe, and a large amount of heat can be quickly transferred. This is what I did. This heat conduction pipe 4 is connected to the upper inner side of the front opening 1a of the shell 1, that is, the forehead portion 1 when attached.
Route it around b. A cooling pad 5 is provided near this forehead portion 1b. This cooling pad 5 is equipped with a temperature detection switch 7 such as a thermistor that detects a predetermined temperature and operates.

A battery 8, which is a power source for the electronic cooling element, is housed within the thickness of the jaw 1c of the shell 1, and a battery 8, which is a power source for the electronic cooling element, is housed below or outside the jaw 1c of the shell 1, so that the electronic cooling element can be connected to an external power source. Install jack 9.
Furthermore, an electronic circuit power switch 10 is provided outside the jaw portion 1c of the shell 1.

Here, the structure near the heat dissipation plate 2 on the left side of the helmet is as shown in FIG. Insert and secure them into each case (see figure). In addition, metal bracket 11
A screw hole 11d is formed in the main plane 11c, so that the electronic cooling element 12 can be clamped and fixed between the heat dissipation plate 2 and the resin screw 13 having low thermal conductivity. A heat insulating material 14 is arranged around the electronic cooling element 12 to increase the cooling efficiency of the electronic cooling element 12. In addition, electronic cooling element 1
2 is an electronic element that has the Peltier effect, in which heat is absorbed at one joint end and heat is released at the other joint end, by passing a current through a so-called thermocouple made by joining dissimilar metals, or one type of electronic element. Electronic elements can be used that have the Thomson effect, which causes a semiconductor to absorb or emit heat by passing an electric current through it. Note that the right side of the helmet also has a heat sink having a similar configuration.

FIG. 4 shows the cooling pad 5, and the structure of the area around the forehead portion 1b of the helmet shell 1 in which the cooling pad 5 is arranged is as shown in FIG.
According to the figure, a heat insulating material 15 is arranged from the inside of the shell frame portion 1b to cover the side edge of the opening end 1a, and the two heat conduction pipes 4 mentioned above are further placed inside this material on the side where they are arranged. is arranged along the inner surface of shell 1. This heat transfer pipe 4 is attached to a block-shaped or plate-shaped bracket 1 similar to that shown in FIG.
It is in contact with the cooling pad 5 via 6. That is, the heat insulating material 15, the bracket 16, the heat conduction pipe 4, and the cooling pad 5 are arranged within the approximate thickness of the liner 18 and pad 19 arranged inward from the shell 1, and at the open end 1a on the extension direction thereof. It forms the edge. According to this embodiment, the cooling pad 5 has an arcuate shape that covers the forehead, and the cooling pad 5 is made of PVC or the like with raised skin on the tank 5a.
A gel-like refrigerant 5b with good thermal conductivity is filled inside from the injection port 5f. The temperature detection switch 7 detects the temperature of this refrigerant 5b.

FIG. 6 shows how the electronic elements of the helmet components as described above are connected. The left and right electronic cooling elements 12L and 12R are connected in parallel, respectively, and connected to a power source battery 8 via a temperature detection switch 7 and a main switch 10, which are connected in series. In addition, a jack 9 is connected in parallel to the power supply battery 8.
This allows connection to an AC/DC adapter (not shown) or other external power source. Moreover, a solar cell can be similarly connected as a power source.

Next, the operation of the above embodiment will be explained. If the main switch 10 is in the on state, the electronic cooling element 12
Current flows from the power supply battery 8 to L and 12R. As a result, the high temperature heat inside the helmet is transferred to the electronic cooling element 12 side by the heat conduction pipe 4 via the cooling pad 5 and the bracket 16, etc., and the electronic cooling element 12 absorbs the heat of the heat conduction pipe 4 and radiates the heat. Release to the plate 2 side. Therefore, the heat on the high-temperature side of the helmet is dissipated by the heat sink 2 on the low-temperature side, and the temperature of the cooling pad 5 gradually decreases. In other words, the inside of the helmet is gradually cooled down. When the temperature falls below a predetermined temperature, the temperature detection switch 7 is opened and further cooling is stopped.
Further, when the temperature rises thereafter, the switch 7 is opened again and the above-described operation is repeated.

FIG. 7 shows another embodiment of the present invention, in which the heat dissipation plate 2 is provided continuously on the forehead portion 1b instead of on the chin portion 1c. In this case, since the distance between the heat sink 2 and the cooling pad 5 is short, it is possible to thermally connect the heat sink 2 and the cooling pad 5 with the heat conduction plate 21 such as a metal plate without using the heat conduction pipe 4. can. In addition, at this time, the electronic cooling element 12 can be fixed to any part of the heat conduction plate 21 connecting the heat sink 2 and the cooling pad 5 to obtain the same effect as the embodiment shown in FIG. . In this case,
As shown in FIG. 8, a heat insulating material 15 that is not easily affected thermally and chemically is used above and below the electronic cooling element 12, and a heat sink 2 and this heat insulating material 15 are used.
A slight gap is provided between the helmet liner 18 and the helmet liner 18 to prevent the helmet liner 18 from being affected by heat. Figure 9 shows
In the left side portion of the cooling pad 5, an electronic cooling element 12 is shown screwed between the heat sink plate 2 and the heat conduction plate 21 with resin screws 13. In this embodiment, a power supply battery 8 is placed at the back of the shell's head 1d, and solar cells 20 for power supply are arranged on the outer crown of the shell 1.

According to the present invention, various components can be arbitrarily arranged as necessary without being limited to the above embodiments, and at this time, heat conduction pipes can be used or not used as necessary. can. Furthermore, a well-known heat insulating structure can be used as appropriate.

(Effects of the Invention) According to the present invention, by enabling forced cooling using the electronic cooling element as described above,
It is possible to obtain a helmet that has the following effects.

(1) Since it is an electronic forced cooling system, it is possible to cool the inside of the helmet regardless of whether the vehicle is stopped or where it is used, and it does not cause discomfort to the wearer.

(2) By using an external power supply device, the load on the internal battery can be reduced.

(3) By adjusting the position of the heat sink, cooling efficiency can be further increased when the vehicle is running.

(4) Even if a soft cooling pad is placed near the edge of the helmet, when the helmet is put on, it will not be dragged to the upper part of the helmet due to friction with the forehead, and will not peel off from the bracket and its function will not deteriorate.

(5) Since the cooling pad is not dragged into the helmet, the cooling pad can be placed on the edge of the helmet, and can widely cool the area of the forehead where cooling is most needed.

(6) Since the cooling pad does not protrude inside, it is easy to put on the helmet, and since there is no step inside, the helmet feels almost the same as a conventional helmet.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a helmet according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of main parts of a helmet according to an embodiment of the present invention, and FIG. 3 is a sectional view taken along line AA in FIG. FIG. 4 is an explanatory diagram of other main parts of the helmet according to the embodiment of the present invention, FIG. 5 is a sectional view taken along the BB line of FIG. 1, and FIG. Electrical wiring diagram, FIG. 7 is a configuration diagram of a helmet according to another embodiment of the present invention, FIG. 8 is a sectional view taken along line CC in FIG. 7, and FIG. 9 is a diagram according to another embodiment of the present invention. FIG. 2 is an explanatory diagram of main parts of a helmet. In the drawing, 1 is a helmet shell, 2 is a heat dissipation plate, 3 is a heat dissipation fin, 4 is a heat conduction pipe, 5 is a cooling pad, 7 is a temperature detection switch, 8 is a power battery, 11 is a bracket for the heat conduction pipe, and 12 is an electronic Cooling element, 14 and 15 are heat insulating materials, 16 is a heat conduction pipe bracket, 18 is a helmet liner, 18a is a recess, 19 is a helmet pad, 2
1 is a heat conductive plate.

Claims (1)

[Claims] 1. A helmet comprising an outer shell, an inner pad, and a liner sandwiched between the shell and the pad, wherein the helmet is provided with a heat dissipation plate on the shell surface, and a heat dissipation plate is provided on the shell surface, and a heat dissipation plate is provided on the forehead-opposed portion of the liner near the edge of the helmet. A recess is provided in the recess, the pad is extended to the edge of the recess, a cooling pad is embedded in the recess via a conductive bracket, and the forehead contact surface of the cooling pad is the head contact surface of the pad. The thickness of the cooling pad is set so that they are substantially on the same plane, and an electronic cooling element is provided that releases and/or absorbs heat by supplying an electric current, and the electronic cooling element, the cooling pad, and the heat sink are arranged on the same surface. 1. A helmet comprising: thermal conduction means that thermally connects one or both of the two, with the cooling pad on the low temperature side and the heat sink on the high temperature side.