JPS6018967B2 - ski goggles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to ski goggles, and in particular to the cloud-proof structure of the goggle lenses.As is well known, ski goggles are used in extremely cold environments. During use, especially when skiing is stopped, the skier's body temperature, perspiration, etc. can cause the goggle lenses to fog up, leading to poor visibility and accidents. In order to prevent fogging, the following measures have been taken in the past: [1]
] A method of chemically applying anti-fog treatment to the surface of goggle lenses.

[0] A method in which a goggle lens is constructed from two inner and outer lens plates, and the internal space of the goggle lens is made into a heat insulating layer. However, these anti-cloud measures had advantages and disadvantages. That is, in the case of the former [1], the goggle lens has a certain cloud-proofing effect up to a surface temperature of about 0°C, but in an environment where the surface temperature is below 000°C, it becomes a cause of fogging. Because water droplets freeze on the surface of the goggle lens, sufficient cloud-proofing effects cannot be achieved. Also the latter [
0], the goggle lens is composed of two lens plates, and the internal space is a heat insulating layer, so
After skiing has stopped, fogging due to sweating and the like does not immediately appear on the front side of the goggle lens, and therefore an anti-fog effect can be obtained even in an environment where the front lens surface temperature is 0° C. or lower. However, when plastic lenses are used for goggle lenses, the lens plate deforms due to pressure changes in the interior space of the lens due to changes in air pressure and temperature during downhill skiing, resulting in distortion of the field of vision through the goggle lenses. In other words, since skiing involves intense exercise, it is necessary to ensure the safety of the face, etc., so materials that are difficult to break, such as plastic shoes, are widely used. If this is done, for example, when the goggle lens is used at a high-altitude ski resort, a pressure difference between the inside and outside of the goggle lens will occur, causing the entire goggle lens to be compressed and deformed, causing distortion in the field of vision. Therefore, a device has already been proposed in which a pinhole-shaped ventilation hole is bored in the inner lens plate of the goggle lens, and the pressure inside and outside the goggle lens is balanced through this ventilation hole, thereby preventing the goggle lens from deforming. ing. However, if you drill ventilation holes in the inner lens plate like this,
When moisture (snow, etc.) enters the internal space of the goggle lens through these ventilation holes and the temperature rises, the moisture evaporates and fogs up on the inner surface of each lens plate, causing the same problem as described above. There was a drawback that it could no longer function as goggles. The present invention aims to solve these conventional problems, and its features are as follows:
Ski goggles in which the goggle lens is composed of two inner and outer lens plates, the inner space of which is used as a heat insulating layer, and the inner lens plate is provided with a vent hole for pressure balance,
A neck slanted wall part for spacing is integrally formed on the outer periphery of at least one of the inner and outer lens plates, and a ventilation hole is provided corresponding to this slanted wall part to prevent moisture from entering the inner space through the ventilation hole. A water-repellent ventilation filter that blocks air flow and only allows air flow is provided on the inner lens plate in correspondence with the ventilation holes. Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
The figure shows an optimal embodiment of ski goggles according to the present invention, which includes a goggle frame 1, a rubber band 2 connected to the goggle frame 1, and a rubber band 2 that is removably attached to the goggle frame 1. The camera includes a goggle lens 3 and a knee water ventilation filter 4 attached to the goggle lens 3. The goggle frame 1 is made of a soft material such as vinyl or rubber, and as shown in FIGS. 2 and 3, it consists of a lens rim 5, a face seat 6, and a peripheral wall 7 that connects the two. A goggle lens 3 is removably attached to the lens rim 5. A close contact material 8 such as a sponge or a mont plate is attached to the face support 6 in order to maintain good contact with the face. A plurality of through holes 9 are perforated in the peripheral wall portion 7 at required locations above and below, and connecting holes 1 are provided at both left and right ends.
0 are bored, and connectors 11 at both ends of the rubber band 2 are inserted into each of the connecting holes 10. The goggle lens 3 includes a lens plate 1 made of colored transparent plastic as shown in FIG.
The inner and outer lens plates 12 and 13 are provided with two inner and outer lens plates 2 and 13.
A predetermined internal space 14 is formed between them, and this internal space 14 is used as a heat insulating layer. That is, of the inner and outer lens plates 12 and 13, the outer lens plate 13 integrally has an inclined wall portion 15 for maintaining the distance between the outer peripheral edges,
The outer circumferential side of this inclined wall portion 15 is bonded to the outer circumferential portion of the inner lens plate 12 in an overlapping state, and an internal space 14 corresponding to the height of the inclined wall portion 15 is formed between the inner and outer lens plates 12 and 13. Ru. Therefore, since the internal space 14 functions as a kind of heat insulating layer, the thermal conductivity between the front and back of the goggle lens 3 decreases, and the temperature on the face side inside the goggle frame 1 is unlikely to immediately appear on the front side of the lens plate 13. Therefore, it is possible to prevent the surface of the lens plate 13 from becoming cloudy when the slide is stopped. The aqueous ventilation filter 4 has ventilation holes 16 formed in the inner lens plate 12.
This is to prevent moisture from entering the inner space 14 of the goggle lens 3, and is attached to the inner lens plate 12 in correspondence with the ventilation hole 16, as shown in FIGS. 2 and 3. There is. The ventilation hole 16 is a pinhole-shaped small hole, and the internal space 1
4 and the outside, and is provided as close as possible to the goggle frame 1 so as not to limit the field of view. That is, the ventilation hole 16 is provided at one end in the left-right direction of the inner lens plate 12 at a position corresponding to the chain slanted wall portion 15 of the outer lens plate 13, and the vertical water-based ventilation filter 4 is attached to the entire goggle lens 3. There is almost no effect on your field of vision, and you can secure the maximum field of view necessary for gliding. As shown in FIG. 4, the water-based aeration filter 4 includes a sheet-like air permeable base material 18 having air permeability such as nylon cloth, and a continuous porous layer 19, such as a polytetrafluoroethylene resin fiber layer 19. It is pasted. Incidentally, this tetrafluoroethylene resin fiber layer 19 has a stretched fine fiber structure that is extremely strong and flexible.
It has many continuous pores and has strong aqueous properties, and its average pore diameter, porosity, and air flow rate are shown in the table below. Therefore, when the external pressure increases due to downhill skiing, etc., external air flows from the vent hole 16 into the internal space 14 of the goggle lens 3' as shown by the arrow in FIG. 4, and the pressure between the internal space 14 and the outside is in equilibrium. Therefore, the lens plates 12 and 13 are not deformed in any way, and distortion of the visual field can be prevented. Also, at this time, external air is sucked into the internal space 84 through the ventilation hole 16, but this suction is performed through the tetrafluoroethylene resin fiber layer 19 of the ventilation filter 4, so the outside air contains a large amount of moisture. Even if snow or the like adheres to the outer surface of the breathable base material 18, the permeability of the ventilation filter 4 can prevent moisture from entering the internal space 14. Therefore, despite the presence of the pressure-balancing vent 16, it is possible to prevent the occurrence of fogging on the inner space 14 side of the goggle lens 3, and a good field of vision can always be ensured.
The ventilation filter 4 is attached to the inner lens plate 12 through the adhesive 20', with the tetrafluoroethylene resin fiber layer 19 facing the inner lens plate 12, as shown in FIG. There is. Therefore, the ventilation filter 4 itself is in the form of an extremely thin sheet, and the polytetrafluoroethylene resin fiber layer 19 is protected from the outside by the ventilation base material 18, so that the goggle lens 3, especially the inner lens plate. Even when wiping off snow, dirt, etc. adhering to the filter 12, the ventilation filter 4 does not become an obstacle and is easy to clean, and the polyfluoroethylene resin fiber layer 19 is not damaged during wiping. It is possible to maintain a predetermined water resistance, in other words, a cloud-proofing effect, for a long period of time, and is extremely durable. The adhesive 20 is applied to the peripheral green part of the ventilation filter 4 to prevent the ventilation holes 16 from being checked. Note that the ventilation filter 4 is attached to the inner lens plate Q2 with an adhesive 20, so if any noise occurs, it can be forcibly peeled off and replaced with a new one. Also, when attaching the ventilation filter 4, the fourth
As shown in the figure, if the ventilation filter 4 is raised slightly above the inner lens plate 12 by applying a relatively thick layer of adhesive 20, etc., the ventilation filter 4 can be removed during cleaning.
Even when pressed, the edge portion 16a of the vent hole 16 will not be cut. FIG. 5 shows a modification of FIG. 3,
A ventilation filter 4 is installed in a recessed part 21 of an inner lens plate 12. That is, a circular recess 21 is formed in the inner lens plate 12 and is recessed toward the inner space 14, and a ventilation hole 16 and a ventilation filter 4 are provided in the recess 21. It is very effective in preventing the peeling of No. 4. In addition, when using the adhesive 20, when inserting the goggle lens 3 into the goggle frame 1, etc., the ventilation filter 4
If a force is applied in all directions inadvertently, the ventilation filter 4 may move and become displaced from the ventilation hole 16, but if the ventilation filter 4 is placed in the recessed part 21, such problems can be avoided. can be resolved at the same time. As such protection measures for the ventilation filter 4, there are various aspects as shown in FIGS. 6 to 10. 6 and 7, an annular filter frame 22 having a slightly larger diameter than the ventilation filter 4 is used. The filter frame 22 is adhered to the inner lens plate 12 so as to surround the ventilation filter 4 in an approximately circular shape, and its diameter and height are such that a finger does not come into direct contact with the ventilation filter 4. FIG. 8 shows a filter frame 24 with a bottom 23, in which a vent hole 25 having a larger diameter than the vent hole 16 is formed. In this case, since the filter housing space 26 is formed within the filter frame 24, it is sufficient to simply interpose the ventilation filter 4 in the filter housing space 26, and there is no particular need for adhesion or the like. Therefore, if the diameter of the ventilation holes 25 is made large and the ventilation filter 4 is made of a sponge treated with twill water or a nonwoven fabric treated with twill water,
If the ventilation filter 4 becomes dirty and clogged after long-term use, it can also be replaced through the ventilation hole 25. If the ventilation filter 4 is in the form of a sheet, use an elastic ring 27 made of plastic, rubber, etc. as shown in FIG. 9, and attach the ventilation filter 4 to this as shown in FIG. 10. By imitating the elastic ring 27 in this manner, it can be easily inserted into the filter accommodation space 26 through the ventilation hole 25. After insertion, the ventilation filter 4 is expanded into the filter accommodation space 26 due to the restoring force of the elastic ring 27, as shown in FIG. In addition, in both cases of FIG. 8 and FIG. 9, when removing the ventilation filter 4,
It is sufficient to hook the ventilation filter 4 with a pin or the like and pull it out from the magnetic hole 25. 11 and 12 show a system in which a rectifier valve 28 is used in addition to the ventilation filter 4. The ventilation filter 4 is attached to the inner surface of the bottom 23 of the filter frame 24 in correspondence with the ventilation holes 25. Rectifier valve 28
is a condition that occurs when external pressure suddenly increases,
It has a valve body 29 made by cutting out a vinyl sheet, a rubber sheet, etc. into a circular shape, and the valve body 29 is arranged in the filter housing space 2.
Inner lens plate 1 is attached with adhesive on a part of the periphery within 6.
2, and the swinging movement of the free end opens the ventilation hole 1.
6 can be opened and closed freely. The valve body 29 of the rectifier valve 28 is usually
As shown in FIG. 11, the ventilation hole 16 is in an open state, and therefore the internal space 14 of the goggle lens 3 and the outside are
The pressure is maintained at the same level through the ventilation hole 16, the filter housing space 26, and the ventilation hole 25, and the ventilation filter 4 prevents only moisture from entering the internal space 14 side. In addition, if the external pressure increases due to the start of a gentle downhill slide, etc., unless the change is sudden, the rectifier valve 28
The valve body 29 maintains a relationship close to the state shown in FIG. 11, and the pressure in the internal space 14 is balanced with the outside through the vent hole 16. During steep downhill skiing, the external air pressure rises rapidly, and this sudden pressure rise pushes the valve body 29 toward the inner lens plate 12 as shown in FIG. It enters the internal space 14 through the ventilation hole 16 through a small gap between it and the plate 12. In other words, the rectifier valve 28 is in a blocked state. Therefore, the rectifier valve 2
8, when the external pressure suddenly increases, air equivalent to the pressure difference would pass through the ventilation filter 4 at a considerable flow velocity, and at that time, moisture such as snow and water droplets adhering to the surface of the ventilation filter 4 would be strongly There was a possibility that the air would be sucked in and at the same time infiltrate into the internal space 14, but since there is a rectifier valve 28, the air gradually flows into the internal space 14 through the ventilation filter 4, and moisture is sucked in at the same time. Therefore, it is possible to maintain the cooling performance of the ventilation filter 4 and ensure a sufficient cloud-proofing effect of the goggle lens 3. Also, at this time, a pressure difference naturally occurs between the inside and outside of the goggle lens 3, but the internal space 14 is not completely sealed, but communicates with the outside through the rectifier valve 28, which is in a closed state, and gradually sucks in outside air. Therefore, rapid deformation of the inner and outer lens plates 12 and 13 can be prevented, and can be suppressed to a small range that does not cause much trouble when sliding downhill. Therefore, by adding the rectifier valve 28,
It is extremely suitable for steep downhill skiing. The goggle lens 3 is not limited to the structure in which the inclined wall portion 15 is provided on the outer lens plate 13, and for example, as shown in FIG.
An inclined wall portion 15 may be provided on the side, and the inner and outer lens plates 12 and 13 may be bonded together on the outer peripheral side of the inclined wall portion 15. In addition, in FIG. 14, a ventilation filter 4 is attached to the oblique wall portion 15 of the inner lens plate 12. In addition to being mounted on the outer surface of the inner lens plate 12, the ventilation filter 4 can also be mounted on the inner surface of the inner lens plate 12, that is, on the inner space 14 side. In addition, the ventilation filter 4 has a polytetrafluoroethylene resin fiber layer 19.
Instead, a silicone resin fiber layer may be used.
As described in detail in the embodiments above, according to the present invention, a water-repellent ventilation filter is provided corresponding to the vent hole, and the water-repellent ventilation filter prevents moisture from entering the inner space of the goggle lens from the vent hole. Moreover, since only the flow of air is allowed, it is possible to prevent the occurrence of fogging in the inner space side of the goggle lens, and to ensure good visibility at all times, even though there are vent holes for pressure equalization. In addition, a mirror slanted wall section for spacing was integrally formed on at least one outer periphery of the inner and outer lens plates, and a ventilation hole and a water-repellent ventilation filter were provided corresponding to the slanted wall section, so that water-repellent ventilation was achieved. The filter has almost no effect on the overall field of view of the goggle lenses, ensuring the maximum field of view necessary for gliding.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention, and FIGS. 1 to 4 show the first embodiment of the present invention, with FIG. 1 being a perspective view of the whole, and FIG. 2 being a longitudinal section of the right half. Rear view, Figure 3 is the 2nd
Fig. 4 is an enlarged view of the main part of Fig. 3, Fig. 5 is a sectional view of the lozenge part showing the second embodiment, and Fig. 6 shows the third embodiment. Cross-sectional view of the figure, No. The figure is a cross-sectional view of the skin in Fig. 6, Fig. 8 is a sectional view of the main part showing the fourth embodiment, Fig. 9 is a sectional view of the main part showing the fifth embodiment, and Fig. 10 is the same ventilation filter. A perspective view showing the insertion method, FIG. 11 is a cross-sectional view of the main part showing the sixth embodiment, FIG. 12 is a cross-sectional view of the main part shown in FIG. , FIG. 14 is a sectional view of a main part showing a seventh embodiment. 1...goggle frame, 3...goggle lens, 4...
Water repellent ventilation filter, 12, 13... - Lens plate, 14... Internal space, 15... Inclined wall portion, 16... Ventilation hole, 18... Breathable base material, 19... ...Tetrafluoroethylene resin fiber layer,
22... Filter frame, 28... Rectifier valve. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14

Claims (1)

[Scope of Claims] 1. A ski goggle in which the goggle lens is composed of two lens plates, an inner lens plate and an inner lens plate, the inner space of which is used as a heat insulating layer, and a vent hole for pressure balance is provided in the inner lens plate. A slanted wall for spacing is integrally formed on at least one outer peripheral edge of the lens plate, and a ventilation hole is provided corresponding to the slanted wall to prevent moisture from entering the internal space through the ventilation hole. Ski goggles characterized in that a water-repellent ventilation filter that only allows air flow is provided on the inner lens plate corresponding to the ventilation hole. 2. Claim 1, wherein the water-repellent breathable filter comprises a sheet-like breathable base material and a continuous porous tetrafluoroethylene resin fiber layer adhered to the sheet-like breathable base material. Ski goggles as described in section.