JP2004237876A - Window defogger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem in the means to prevent a window glass from fogging caused by condensate of moisture in air on inner surface side of the window glass by the temperature difference between inside and outside of a room when an outside temperature is low, that is, the system to lead the heated air of a heating apparatus to a window glass or the system to install heating thin film on the window glass requires a power source and complicates the device, and the system in a small craft to prevent a window glass from fogging by flowing the warm air heated by the radiator to radiate warm water that has cooled an engine, requires not only the radiator and a fan but also a battery for power to be supplied to warm water piping and the fan, and causes unfavorable power consumption. <P>SOLUTION: The window defogger comprises a packing closely in contact with all round of an inside surface of the window, and a defogging board having a see-through window surface part facing the see-through surface of the window with a space therebetween in an area surrounded by the packing. The packing has a flexible seal fin closely in contact with the inside of the window, and the air in the space is sucked with a pump device. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an anti-fog device for an inner surface of a window whose outer surface is exposed to cool air.
[0002]
[Prior art]
As a method for preventing fogging of the window glass, a method of blowing heated air heated by an electric heating appliance onto the window glass (for example, Patent Document 1), or a method of electrically generating heat from a transparent thin film formed on the window glass, the window glass. (For example, Patent Document 2).
[0003]
The method of Patent Document 1 requires a heating device and a duct mechanism or the like for guiding the heated air to the window glass, which makes the device complicated and expensive. Further, in the method of Patent Document 2, a heat generating film is formed on a window glass by a method such as forming a film by a sputtering method, transferring an electric thin film, or coating a thin film. The equipment, including the transmitter and wiring equipment, becomes complicated.
[0004]
Conventionally, in small boats such as pleasure boats, when the outside air temperature is low, moisture in the air condenses on the inner surface of the window in front of the cabin covering the cockpit due to the temperature difference between the outside air and the cabin. Cloudy. When the outside air is below freezing, the water may freeze. Both of the above methods require a power source with a stable power supply.However, in small vessels such as pleasure boats, expensive facilities are required to stabilize the power supply. It is not preferable to apply the above method as an anti-fog device for windows. Neither of the above two methods is considered as a removable fogging prevention device.
[0005]
To prevent fogging of the window glass of small boats, there is a method in which hot water cooled by the engine of the small boat is poured into a radiator, and the hot air heated by the radiator is blown onto the window glass with a fan to remove the fogging. In this case, not only a radiator and a fan are required, but also a hot water pipe is required, and a battery for supplying power to the fan is required, which is not preferable from the viewpoint of power consumption.
[0006]
Further, a part of a window in front of the cockpit of a small boat has a window structure called a revolving window that rotates a transparent plate by an electric motor, and the revolving window functions as a so-called wiper that repels rain that collides during navigation. is there. Although the fogging can be eliminated by turning the swivel window, in order to purchase the swivel window and attach it to the window of the completed ship, it is actually difficult to perform the processing required for the installation on the ship, so it is actually quite difficult, Normally, a method of attaching a ship at the time of manufacture is adopted. Further, this turning window also requires a battery for power to be supplied to the electric motor, which is not preferable in terms of power consumption.
[0007]
[Patent Document 1]
JP 05-346088 A (pages 1 to 3, FIGS. 1 to 3)
[Patent Document 2]
JP-A-2002-001869 (pages 1 to 4, FIG. 1)
[0008]
[Problems to be solved by the invention]
In view of the above, the present invention provides a device that does not require a power source, can easily be attached to a window to prevent fogging of the window, and can be easily removed when unnecessary. is there.
[0009]
[Means for Solving the Problems]
The anti-fog device for a window of the present invention is mounted on the inner surface of a window whose outer surface is exposed to cold air, and is surrounded by a packing that is in close contact with the inner surface of the window all around, and is surrounded by the packing. A fog preventing plate having a see-through window surface portion facing the see-through surface of the window with a space in a region, wherein the packing extends outward so as to closely contact the inside of the window in a planar manner. It has a characteristic seal fin.
[0010]
For this reason, since the flexible seal fin extends outward, the flexible seal fin receives the surrounding air pressure on the outer surface of the flexible seal fin, for example, when the air in the space is sucked by a pump device. Closely adhere to the inner surface of the window. For this reason, the airtightness of the packing is improved, the holding of the fogging prevention device with respect to the window is ensured, and it is safe and the negative pressure in the space can be maintained for a long time. Further, since the space is a heat insulating space, fogging can be prevented at this window surface portion, and there is an effect that a device which does not require electric power can be provided. For this reason, if the small boat is mounted on the cockpit window of the small boat in advance, the small boat can be operated without fogging, and the navigation is safe.
[0011]
Further, the fogging prevention device for a window of the present invention has a packing having an outer surface closely contacted with the inner surface of the window exposed to the cool air all around, and a transparent surface and a space of the window in a region surrounded by the packing. An anti-fog plate having a see-through window surface portion facing the front surface, wherein the packing forms an annular space between the window with an annular inner seal projection and an annular outer seal projection, The suction pressure can be applied to the window by a negative pressure in the annular space due to a pressing pressure on the window.
[0012]
For this reason, in addition to the above-mentioned effects, the air in the annular space is expelled by the pressing pressure against the window and becomes negative pressure, whereby the anti-fog device is adsorbed to the window, and the air in the space is sucked by the pump device. If a mechanism is added, the operation of the pump device can be started while the anti-fogging device is being held by suction, and the fog preventing device can be stopped alone without the help of another person to hold the anti-fog device against the window Since the device can be mounted on the window and the pump device can be operated, the operation can be simplified. For this reason, it is effective as a holding mechanism of the fogging prevention device before the suction operation of the air in the space by the pump device.
[0013]
Further, the fogging prevention device for a window according to the present invention is characterized in that the annular space is formed as a double inside and outside by a plurality of annular sealing projections. For this reason, in addition to the above effects, the holding power of the anti-fog device with respect to the window before suction using a pump device or the like can be further increased, and stable holding can be achieved.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described. Each figure shows an embodiment of the window anti-fog device of the present invention. 1 is a plan view of a window anti-fog device, FIG. 2 is a perspective view in which the window anti-fog device is mounted inside a front window of a small boat, and FIG. 3 is a window anti-fog device mounted inside a window glass. FIG. 4 is a cross-sectional view including a pump device of a window anti-fog device, FIG. 5 is a cross-sectional view illustrating an attached state of the window anti-fog device and the pump device, and FIG. 6 is a window anti-fog device. 7 is a cross-sectional end view of the packing according to another embodiment of the window anti-fog device, and FIG. 8 is a cross-sectional end view of the packing according to still another embodiment of the window anti-fog device. It is.
[0015]
INDUSTRIAL APPLICABILITY The present invention is particularly effective when applied to a window in which fogging occurs on a window glass and visibility becomes poor, thereby causing a problem. For this reason, the window 30 targeted by the present invention is a see-through window whose outer surface is exposed to cold air, and is, for example, a cockpit 41 of a small boat 40 such as a pleasure boat, a small passenger boat, a small transport boat, or the like. It is a front window 30 provided in front, or a window of other things.
[0016]
Hereinafter, the window anti-fog device of the present invention will be described for the small boat 40. In the small boat 40, the front window 30 provided with the bridge 43 covering the cockpit 41 and the cabin 42 behind it, that is, the see-through surface 31 of the front window 30 provided in front of the cockpit 41 The inside surface is exposed to the air temperature of the cockpit 41 and the cabin 42, and in the winter season or the like, the temperature difference causes the inside surface of the see-through surface 31 to be clouded or dewed by moisture. There is an effect that this can be prevented in the portion of the window where the anti-fog device 1 is attached.
[0017]
The window 30 generally has a form in which a periphery of a see-through surface 31 is surrounded by a frame 32, and its shape is various such as a square, a polygon, and a circle. The see-through surface 31 is made of a material that can see through from one side to the other side regardless of whether it is colored or uncolored, and is made of plastics or glass. The front window 30 of the small boat 40 provided with the bridge 43 covering the cockpit 41 and the cabin 42 behind the cockpit 41, that is, the see-through surface 31 of the front window 30 provided in front of the cockpit 41 has poor visibility due to surface damage. In consideration of the problem and the strength, tempered glass that is hard to be scratched is generally employed.
[0018]
The anti-fog device 1 for a window of the present invention is mounted on the inner surface of a window 30 whose outer surface is exposed to cold air. A fog preventing plate 10 having a see-through window surface portion 4 facing the see-through surface 31 of the window 30 and the space 3 in a region surrounded by a circle. It has a flexible seal fin 50 extending in the direction, and the air in the space 3 is sucked by the pump device 5. The packing 2 may be either synthetic rubber or natural rubber made of a synthetic resin, and the flexible seal fin 50 makes surface contact with the see-through surface 31 toward the outside of the packing 2 as shown by a dotted line in FIGS. And it comes into close contact with the see-through surface 31. In the packing 2, a pair of annular seal projections 56, 56 are formed on the opposing surface of the annular groove 55 that sandwiches the peripheral edge of the anti-fog plate 10, and the annular seal projections 56, 56 and the peripheral edge of the anti-fog plate 10 are formed. Are adhered to each other, and the airtightness between the packing 2 and the anti-fog plate 10 is maintained.
[0019]
The anti-fog plate 10 has the window surface portion 4 formed of a transparent material, and may be formed entirely of a single transparent material. That is, the window surface portion 4 and the frame portion 7 surrounding the periphery thereof and to which the packing 2 is attached can be formed of one transparent material. On the other hand, the window surface portion 4 and the frame portion 7 surrounding the periphery thereof and attaching the packing 2 can be formed of different members. For this reason, when the anti-fog plate 10 is formed of a single transparent material, the anti-fog plate 10 is formed by molding a highly transparent synthetic resin such as acrylic or polycarbonate into a predetermined shape. When the window surface portion 4 and the surrounding frame portion 7 are separately formed and air-tightly combined, the window surface portion 4 is made of a synthetic material such as a transparent tempered glass or acrylic or polycarbonate having excellent transparency. The frame portion 7 can be formed of wood, metal, synthetic resin, or the like.
[0020]
Further, the anti-fog plate 10 includes a suction port 6 communicating with the space 3. A suction pipe 60 communicating with the suction port 6 and attaching the pump device 5 is adhered to the outer surface of the anti-fog plate 10 with an adhesive. The suction pipe 60 is formed of a transparent synthetic resin so as not to obstruct the view, and since the anti-fog plate 10 and the suction pipe 60 are transparent plates, the air bubbles and the adhesive surface contained in the adhesive are seen through from the outside to design. In order to solve the problem, a flat end surface of the suction pipe 60 is adhered to the outer surface of the anti-fog plate 10 in a plane.
[0021]
The window surface portion 4 is formed so as to be recessed from the frame portion 7 so as to form a uniform flat plate as a whole in order to maintain good visibility through the window surface portion. In the enclosed area, a substantially uniform space 3 is formed between the window 30 and the flat transparent surface 31 of the window 30. The space 3 has such a thickness that the space 3 becomes a good heat-insulated space when the air in the space 3 is sucked by the pump device 5 as described later, and has a thickness of about 10 mm to 20 mm. If there is, the heat insulation function can be exhibited. The window surface portion 4 may be formed into a uniform flat plate shape including the frame portion 7 at the peripheral edge thereof.
[0022]
In order to reduce the glare received through the window portion 4, the window portion 4 can be colored like a sunglass, formed with a light reflection layer, or have a polarizing plate structure. As a result, glare caused by sunlight is reduced, and the safety of maneuvering a small boat or the like can be improved.
[0023]
In the window fogging prevention device 1 of the present invention employing the packing 2 shown in FIG. 6, when used, the packing 2 is brought into contact with the glass 31 by moving the fogging prevention plate 10 along the inner surface of the glass 31 of the window 30. In this state, the air in the space 3 is sucked by the pump device 5. This suction causes the space 3 to be more negative than the surroundings, so that the space 3 is adsorbed on the inner surface of the glass 31. At this time, since the flexible seal fin 50 extends outward, when the air in the space 3 is sucked by the pump device 5 as described later, as shown by the dotted line in FIG. Strongly adheres to the inner surface of the window glass 31. In this case, even if there is a gap between the packing 2 and the window glass 31 in the inner region surrounded by the flexible seal fin 50, the negative pressure in the space 3 acts on the inside of the flexible seal fin 50. Due to the difference between the outside air pressure received by the outer surface of the flexible seal fin 50 and the surrounding air pressure, the flexible seal fin 50 can be tightly adhered to the window glass 31 to keep the space 3 airtight. For this reason, the airtightness of the packing 2 is improved, the holding of the fogging prevention device 1 with respect to the window 30 is ensured, and it is safe and the negative pressure of the space 3 can be maintained for a long time.
[0024]
As described above, since the flexible seal fin 50 comes into close contact with the inside of the window 30 of a small boat or the like, the air in the space 3 is sucked toward the vacuum by the pump device 5 with the packing 2 abutted. By doing so, the adhesion of the space 3 becomes good, and the space 3 becomes an adiabatic space, so that it is possible to prevent fogging in this part and to provide a device that does not require electric power.
[0025]
Since the window fogging prevention device 1 is used in this manner, the fogging prevention device 1 is formed in a size that can be adapted to the size of the glass 31 of the window 30 to be applied, and is not limited to a round shape as shown in FIG. Can be configured. In addition, the window fogging prevention device 1 of the present invention can be manufactured for each application, such as for small boats or other devices.
[0026]
The anti-fog plate 10 is formed so that the window surface portion 4 is deformed by the negative pressure of the space 3 to prevent the see-through surface 31 of the window 30 from being damaged. The see-through surface 31 of the window 30 provided in front of the cockpit 41 of the small boat 40 is generally made of tempered glass and is a flat plate glass having a thickness of about 5 mm. As shown in FIG. 3, while the packing 2 is in contact with the inner surface of the glass 31 of the window 30, the air in the space 3 is sucked by the pump device 5 and evacuated in the vacuum direction, so that the space 3 It becomes more negative pressure. The glass 31 of the window 30 and the window portion 4 receive an inward acting force due to the pump action of the pump device 5, but as shown by the dotted line in FIG. 4 is formed so as to be deformed inward, the deformation reduces the deformation force on the glass 31 and prevents the glass 31 from being damaged.
[0027]
The pump device 5 may be fixed to the suction pipe 60 of the anti-fog plate 10, but is configured to be detachable from the suction port 6. In the case of this detachable structure, the suction pipe 60 erected on the anti-fog plate 10 is detachable by press-fitting. The pump device 5 may be attached to the suction pipe 60 before the window anti-fog device 1 is brought into contact with the window glass 31. Alternatively, the pump device 5 may be brought into contact with the window anti-fog device 1 against the window glass 31. The method of attaching the pump device 5 to the suction pipe 60 may be adopted.
[0028]
One embodiment of the pump device 5 is shown in FIG. The pump device 5 includes a valve member 8 attached to the suction pipe 60 of the anti-fog plate 10 and a pump body 5A detachably connected to the valve member 8. The valve member 8 may be formed of either synthetic rubber or natural rubber made of a synthetic resin. A plurality of annular fins 81 are formed on the outer periphery of a cylindrical portion 8A which is removably inserted into the suction pipe 60. By press-fitting the portion 8A into the suction pipe 60, the seal between the valve member 8 and the suction pipe 60 is achieved by the annular fin 81. Further, an annular flange 82 is formed on the other side 8B of the valve member 8, and a portion beyond the flange 82 has a detachable close insertion relationship with the cylinder 9 of the pump body 5A. A valve portion is formed by a slit 85 on the inside corresponding to the flange 82 so as to always maintain a closed state.
[0029]
In the pump body 5A, the other end 8B of the valve member 8 is inserted into the open end of the pump cylinder 9 to the annular flange 82 portion in close contact with the annular flange 82, and the piston 12 connected to the operation lever 11 via the piston rod 13 has a piston 12 inside the cylinder 9. Reciprocating motion. The pump 5 has a mechanism in which the air in the space 3 is sucked by the reciprocation of the piston 12 by the lever 11.
[0030]
More specifically, the valve member 8 has a slit 85 formed in the middle thereof, through which air passes, and when the piston 12 moves in the direction of arrow P, the slit 85 of the valve member 8 opens to allow the air in the space 3 to flow through the pump cylinder 9. When the piston 12 moves in the direction of arrow Q, the valve member 8 is pressed by the air sucked into the pump cylinder 9 and the slit 85 is closed, and the air sucked into the pump cylinder 9 is drawn into the piston 12 and the pump. This is a mechanism that escapes from the gap 70 between the pump cylinder 9 and the piston rod 13 to the outside of the pump cylinder 9 through the gap with the cylinder 9. When the pressure of the space 3 becomes lower than that of the outside air due to the reciprocating operation of the piston 12, the slit 85 of the valve member 8 maintains a closed state due to the pressure difference. In this state, the pump body 5A is unnecessary and is removed from the valve member 8. Even when the pump body 5A is detached from the valve member 8, the negative pressure in the space 3 is maintained and the anti-fog device 1 remains attached to the window 30 because the slit 85 of the valve member 8 remains closed.
[0031]
The degree of suction by the pump device 5 can be determined by visually observing the deformation of the window surface portion 4 caused by the suction, which indicates that the air in the space 3 has been drawn in the vacuum direction and the space 3 has become a negative pressure. At this point, the suction by the pump device 5 may be stopped. The deformation of the window portion 4 is preferably such that the view through the window portion 4 is not obstructed.
[0032]
Actually, when the air in the space 3 is sucked by the pump device 5 by reciprocating the lever 11, it becomes difficult to gradually pull the lever 11 in the direction of the arrow P. The person who operates can feel. In this state, the suction by the pump device 5 may be terminated.
[0033]
Further, an indicator for displaying the atmospheric pressure of the space 3 may be provided on the anti-fog plate 10 so that the suction by the pump 5 is terminated by watching the indicator.
[0034]
As described above, when the air in the space 3 is sucked by the pump device 5, the space 3 becomes closer to a vacuum than the outside air and becomes an adiabatic space. The fogging of the glass 31 of the window 30 corresponding to the above can be prevented. Under conditions where fogging does not occur, such as when the outside air temperature is high, the fogging prevention device 1 for the window can be removed. In this case, the slit 85 of the valve member 8 is pinched and crushed by a finger to open the slit 85, so that outside air enters the space 3 and the negative pressure in the space 3 is eliminated, so that the anti-fog plate 10 is removed. be able to.
[0035]
In addition to this, a small air intake hole communicating with the space 3 is provided on the anti-fog plate 10, and the small air intake hole is normally closed with a plug. It is also possible to adopt a configuration in which the air is introduced into the space 3 through the small holes and the negative pressure in the space 3 is eliminated, and the anti-fog plate 10 can be removed.
[0036]
FIG. 7 shows a packing 2 according to another embodiment that replaces the packing 2 of FIG. In this case, the packing 2 forms an annular space 52 between the window 30 by the annular inner seal projection 51 and the annular outer seal projection 50. In this case, the annular outer seal projection 50 is formed by a flexible seal fin 50, and the annular inner seal projection 51 is formed in a protruding shape that is slightly bent in close contact with the see-through surface 31. In the packing 2, a pair of annular seal projections 56, 56 are formed on the opposing surface of the annular groove 55 that sandwiches the peripheral edge of the anti-fog plate 10. This is a configuration in which the packing 2 and the anti-fog plate 10 are kept in close contact with each other to keep the airtightness.
[0037]
By pressing the anti-fog device 1 against the inside of the window 30 and pressing it, the inner seal projection 51 and the annular outer seal projection 50 are brought into close contact with the see-through surface 31 of the window 30 and bend while the annular space 52 is bent. Air is pushed out. When this pressing force is released in this state, the annular space 52 becomes a negative pressure due to the restoring force of the packing 2 including the inner seal protrusion 51 and the outer seal protrusion 50, and the window 30 is attracted to the fogging prevention device 1. . In this state where the anti-fog device 1 is held by the glass 31 of the window 30, whether the pump device 5 is attached to the suction pipe 60 and the pump operation is started, or the pump operation of the previously attached pump device 5 is started. Work can be done.
[0038]
As described above, since the flexible seal fin 50 is in close contact with the inside of the window 30 of a small boat or the like, the adhesion is good, and the air in the space 3 is evacuated by the pump device 5 with the packing 2 abutted. The space 3 becomes an adiabatic space by sucking toward, so that fogging can be prevented at the window surface portion, and a device that does not require electric power can be provided. Further, the air in the annular space 52 is expelled by the pressing pressure on the window 30 and becomes negative pressure, and the fogging prevention device 1 is adsorbed to the window 30. Thus, the fogging prevention device 1 is temporarily fixed, and the fogging prevention device is attached to the window. The attachment of the anti-fog device 1 to the window 30 and the operation of the pump device 5 can be performed by one person without the help of another person to press down, which simplifies the work.
[0039]
In a state where the space 3 becomes negative pressure by the pump device 5 and the anti-fogging device 1 is attracted to the window 30, even if a gap is generated between the inner seal projection 51 and the window glass 31, the space 3 is negatively charged. The pressure acts on the inside of the flexible seal fin 50 and a difference from the surrounding air pressure received on the outer surface of the flexible seal fin 50 causes the flexible seal fin 50 to strongly adhere to the window glass 31 to make the space 3 airtight. Can be kept. For this reason, the airtightness by the packing 2 is improved, the holding of the fogging prevention device 1 with respect to the window 30 is ensured, and the safety and the negative pressure in the space 3 can be maintained for a long time.
[0040]
FIG. 8 shows still another embodiment of the packing 2. The packing 2 forms double inner and outer annular spaces 52 and 54 by a plurality of annular seal projections 50, 51 and 53. When the anti-fog device 1 is pressed against the inside of the window 30, the air in the annular spaces 52, 54 is pushed out while the seal projections 50, 51, 53 are in close contact with the see-through surface 31 of the window 30 and flex. When the pressing force is released in this state, the annular space 52, 54 becomes a negative pressure due to the restoring force of the packing 2 including the seal projections 50, 51, 53, and the fogging prevention device 1 is attracted to the window 30. The holding force of the fogging prevention device 1 with respect to the window 30 can be increased by the suction by the double annular spaces 52 and 54. In this case, the annular outer seal projection 50 is formed by a flexible seal fin 50, the annular inner seal projection 51 is formed by a flexible seal fin similar to the flexible seal fin 50, and an intermediate annular seal projection. Numeral 53 is formed in an arc-shaped convex shape to improve the adhesion of the window 30 to the see-through surface 31.
[0041]
As described above, since the flexible seal fin 50 is in close contact with the inside of the window 30 of a small boat or the like, the adhesion is good, and the air in the space 3 is directed to the vacuum by the pump device 5 with the packing 2 abutted. By suctioning, the space 3 becomes an adiabatic space, so that fogging can be prevented in this portion, and a device that does not require electric power can be provided. Further, the air in the annular spaces 52 and 54 is expelled by the pressing pressure on the window 30 to be negative pressure, and the fogging prevention device 1 is adsorbed to the window 30. Thus, the fogging prevention device 1 is temporarily fixed, and the fogging prevention device is removed. The mounting of the anti-fog device 1 on the window 30 and the operation of the pump device 5 can be performed by one person without the help of another person to hold down the window, thereby simplifying the work.
[0042]
In the present invention, in any of the packings of FIGS. 6 to 8, the time in which the air in the annular space is expelled by the pressing pressure on the window 30 and the anti-fog device 1 is sucked and held in the window 30 is thereafter set. The suction holding may be maintained until the mounting of the pump device 5 and / or the start of the pump operation. For this reason, the suction holding time is set to several tens of seconds, such as 15 seconds, 20 seconds, 30 seconds, 40 seconds, and 50 seconds, because these operations can be performed if there are practically several seconds to several tens of seconds. You can do it, but you can feel safe if you take one minute in anticipation of safety.
[0043]
The present invention is applicable not only to the fogging of windows of small boats but also to fogging of windows of other things. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be considered without departing from the technical scope of the present invention, and the invention includes various embodiments.
[0044]
【The invention's effect】
According to the present invention, since the flexible seal fin extends outward, the contact with the window becomes a surface contact, and the airtightness is maintained well. Further, if the air in the space is sucked by a pump device or the like, the surrounding air pressure is received on the outer surface of the flexible seal fin at that time, so that the flexible seal fin is strongly applied to the inner surface of the window of a small boat or the like. Due to the close contact, the airtightness of the packing is improved, the holding of the anti-fog device with respect to the window is ensured, and the negative pressure in the space can be maintained for a long time and is also safe. Since the space is an adiabatic space, fogging can be prevented in this portion, and there is an effect that a device that does not require electric power can be provided. For this reason, if the small boat is mounted on the cockpit window of the small boat in advance, the small boat can be operated without fogging, and the navigation is safe.
[0045]
Further, in the present invention, by forming the annular space between the window and the surface of the packing abutting on the window, the air in the annular space is expelled by the pushing pressure on the window and becomes a negative pressure. As a result, the anti-fog device is adsorbed to the window, so that the anti-fog device can be temporarily fixed. For this reason, if the pump device is added, the operation of the pump device can be started while the anti-fog device is being sucked and held, and without the help of another person to hold the anti-fog device against the window. In addition, since the user can mount the anti-fog device on the window and operate the pump device by himself, the operation is simplified.
[0046]
Moreover, the fogging prevention device for a window of the present invention has the annular space formed inwardly and outwardly by a plurality of annular sealing projections. Since the holding power of the anti-fog device can be further increased, stable holding can be achieved.
[Brief description of the drawings]
FIG. 1 is a plan view of a window anti-fog device of the present invention.
FIG. 2 is a perspective view of the window anti-fog device of the present invention mounted inside a front window of a small boat.
FIG. 3 is an explanatory view showing a state in which a window anti-fog device of the present invention is mounted inside a window glass in cross section.
FIG. 4 is a cross-sectional view including a pump portion of the window anti-fog device of the present invention.
FIG. 5 is a cross-sectional view showing a mounting state of the window anti-fog device and the pump according to the present invention.
FIG. 6 is a sectional end view of the packing of the window fogging prevention device of the present invention.
FIG. 7 is a cross-sectional end view of a packing according to another embodiment of the window fogging prevention device of the present invention.
FIG. 8 is a cross-sectional end view of a packing according to still another embodiment of the window anti-fog device of the window of the present invention.
[Explanation of symbols]
1 ・ ・ ・ Window defogging device
2 ... packing
3 space
4 Window part
5 ... Pump device
6 ... Suction port
7 ... frame part
8 ... Valve member
9 Pump cylinder
10. Anti-fog plate
11. Lever
12. Piston
30 window
31 ・ ・ Window glass
50 Flexible seal fins (annular outer seal projections)
51 ··· Annular inner seal projection
52 .. Annular space
53 ... Middle annular seal protrusion
54 .. Annular space

Claims (3)

An outer surface is mounted on the inner surface of the window exposed to the cool air, and a packing that is in close contact with the inner surface of the window all around, and a transparent surface and a space of the window in a region surrounded by the packing. An anti-fog plate having a transparent and transparent window surface portion, wherein the packing has a flexible seal fin extending outwardly so as to be in close contact with the inside of the window in a planar manner. . A fog having a packing that is tightly attached to the inner side of the window whose outer side is exposed to cool air on the entire circumference, and a see-through window portion facing the see-through surface of the window with a space in a region surrounded by the packing. A stop plate, wherein the packing forms an annular space between the window with an annular inner seal projection and an annular outer seal projection, and the packing is formed by a negative pressure of the annular space due to a pressing force on the window. An anti-fog device for windows, characterized in that it can be adsorbed to windows. The antifogging device for a window according to claim 2, wherein the annular space is formed inward and outward by a plurality of annular sealing protrusions.

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