JP2023141159A - Spectacle lens condensation prevention device - Google Patents

Abstract

To provide a spectacle lens condensation prevention device which is configured separately from spectacles and yet is capable of preventing dew condensation on spectacle lenses.SOLUTION: A spectacle lens condensation prevention device (12) is provided, comprising a blower unit (121) for blowing air, a heater unit (122) provided upstream of, inside, or downstream of the blower unit to heat air blown by the blower unit, and a wind direction control unit (123) for directing the heated air blown by the blower unit toward the back of a spectacle lens.SELECTED DRAWING: Figure 1

Description

The present invention relates to a spectacle lens condensation prevention device.

Conventionally, eyeglasses that prevent lenses from fogging have been developed.

For example, Patent Document 1 discloses eyeglasses that heat the eyeglass lenses and prevent lens fogging by supplying power to a transparent conductive film that is directly adhered to the main surface of the eyeglass lenses.

JP2017-68253A

However, in the conventional technology such as Patent Document 1, the transparent conductive film and the like are integrally formed with the eyeglasses, and there is a problem that it is difficult to apply the transparent conductive film to any eyeglasses such as the eyeglasses used by the user.

In addition, in cold weather or when wearing a mask, eyeglass lenses are more likely to fog up, but in warm weather, there is less chance of condensation forming on the eyeglass lenses, so from the perspective of being removable, the structure is different from glasses. There are also calls for it to be done.

The present invention has been made in view of these circumstances, and it is an object of the present invention to provide an eyeglass lens condensation prevention device that is configured separately from eyeglasses and is capable of preventing dew condensation on eyeglass lenses.

In order to solve the above problems, an eyeglass lens condensation prevention device according to an aspect of the present invention includes a blower section that sends out air, and is provided upstream, inside, or downstream of the blower section, and is provided with a blower section that sends out air. and a wind direction control section that guides the heated air sent out by the blower toward the back surface of the eyeglass lens.

According to the present invention, dew condensation on eyeglass lenses can be prevented even though the eyeglass lens is configured separately from eyeglasses.

FIG. 1 is a perspective view showing a schematic configuration of eyeglasses 1 to which a eyeglass lens condensation prevention device 12 is attached. FIG. 2 is a view seen from above the user, and is a sectional view showing an example of the spectacle lens condensation prevention device 12 according to the present embodiment. FIG. 3 is a graph showing the relationship between temperature and time that causes burns. FIG. 4 is a diagram showing the air flow when the spectacle lens condensation prevention device 12 is positioned at the same position (substantially the same horizontal plane) as the spectacle lens 10 in the vertical direction. FIG. 5 is a diagram showing the air flow when the spectacle lens condensation prevention device 12 is adjusted upward relative to the spectacle lens 10. As shown in FIG.

Hereinafter, one embodiment of a spectacle lens condensation prevention device will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a schematic configuration of eyeglasses 1 to which a eyeglass lens condensation prevention device 12 is attached. Note that in this specification, front, back, left, right, top, and bottom refer to each direction when viewed from a user wearing glasses 1 equipped with spectacle lens condensation prevention device 12. shall be.

In FIG. 1, an eyeglass lens condensation prevention device 12 is attached to any general eyeglasses 1. As shown in FIG. First, as a configuration of the eyeglasses 1 excluding the eyeglass lens condensation prevention device 12, as shown in FIG. 1, the eyeglass main body 2 includes a frame 11 and an eyeglass lens 10 attached to the frame 11. The frame 11 is composed of a temple 101 that can be hung on a user's ear, a rim 102 that is connected to the temple 101 via a hinge, a bridge 103 that connects the left and right rims 102, and a nose pad 104. There is. Note that the glasses main body 2 is not limited to this configuration, and can be applied to any glasses such as glasses or sunglasses having a half-rim or under-rim frame.

As shown in FIG. 1, the spectacle lens condensation prevention device 12 according to this embodiment is removably fixed to any spectacle body 2 via an attachment part 128. In the illustrated example, the spectacle lens condensation prevention device 12 is attached to the temple 101 via an attachment portion 128 having a structure such as a clip.

Here, the attachment part 128 is a clip-like member that can detachably fix a unit including at least the air blowing part 121, the heating part 122, and the wind direction control part 123 to the eyeglass body 2. Note that, as described later, the attachment portion 128 may be configured to be slidably adjustable in the vertical direction with respect to the spectacle lens 10. Thereby, the attachment portion 128 can be fixed in a vertically shifted position so that the air does not directly or indirectly hit the eyes.

FIG. 2 is a view seen from above the user, and is a sectional view showing an example of the spectacle lens condensation prevention device 12 according to the present embodiment. As shown in FIG. 2, the spectacle lens condensation prevention device 12 includes at least an air blowing section 121, a heating section 122, and a wind direction control section 123. As illustrated, in this embodiment, the spectacle lens condensation prevention device 12 further includes a drive control section 124, a power supply section 125, and an attachment section 128.

Among these, the blower section 121 sends out air. More specifically, the air blower 121 may include, for example, a fan and a motor as illustrated. For example, the blower unit 121 rotates a fan based on a voltage, a control signal, etc. output from a drive control unit 124, which will be described later. Thereby, the air blower 121 takes in external air from the rear and discharges the air to the front.

Further, the heating section 122 is provided upstream, inside, or downstream of the blowing section 121 and heats the air sent by the blowing section 121 . That is, in the example of FIG. 2, the heating section 122 is installed downstream of the blowing section 121 in the flow of air, but the heating section 122 is not limited to this, and is installed on the upstream side of the blowing section 121 or inside the blowing section 121. (for example, a fan configured to be able to heat). In the illustrated example, the blower section 121 and the heating section 122 are similar in structure to a dryer.

Further, the wind direction control section 123 guides the air sent out by the blowing section 121 and heated by the heating section 122 toward the back surface of the eyeglass lens 10 . As shown in FIG. 2, the upstream and downstream sides of the air blowing section 121 are open, and the wind direction control section 123 is installed in the downstream opening. For example, as shown in FIG. 2, the wind direction control unit 123 has a lid-like structure connected by a hinge so that the opening can be rotated to open and close. As a result, the user can adjust the direction of the air sent out from the air blower 121 to be directed inward (towards the nose) rather than forward, as shown by the air flow indicated by the arrow in FIG. Air can be guided toward the back surface of the lens 10. However, the present invention is not limited thereto, and the wind direction control unit 123 may be configured with a known wind direction changing means such as that used in an opening of a fan.

The drive control unit 124 controls the amount of air sent out by the air blowing unit 121, the temperature of the air heated by the heating unit 122, or both. For example, the drive control section 124 may be a microcomputer or the like, and may perform appropriate voltage control, current control, transmission of control signals, etc. to the blower section 121 and/or the heating section 122.

Here, the drive control section 124 may control the heating by the heating section 122 depending on the temperature. For example, the drive control section 124 is equipped with a thermostat (bimetal), etc., and adjusts the current flowing through the heating section 122 according to the temperature of the air (outside air) flowing from the upstream side, that is, the air temperature. It may also be possible to control the air flowing through the system so that it is heated to a desired temperature. On the other hand, thermostats (bimetallic) etc. are provided not only on the upstream side but also on the downstream side, and the drive control unit 124 cuts off the current flowing to the heating unit 122 when the air flowing downstream is overheated. The air to be sent out may be controlled within an appropriate range. Here, FIG. 3 is a graph diagram showing the relationship between temperature and time, which causes burns.

As shown in FIG. 3, for example, at 60° C., burns occur in 5 seconds, but at 47° C., burns do not occur until about 1 hour has elapsed. On the other hand, dew condensation occurs on spectacle lenses when the temperature is about 17° C. or lower. Therefore, the drive control unit 124 measures the temperature using any temperature measuring means such as a thermostat (bimetallic), controls the heating unit 122 to heat when the air temperature is 17° C. or lower, and controls the air to be sent out. By controlling the heating unit 122 to stop heating when the temperature is 60° C. or higher, burns can be prevented while preventing dew condensation. Note that the lower and upper limits of the temperature described above are just examples, and the drive control unit 124 can control the temperature within any appropriate temperature range.

Further, the drive control unit 124 may prevent not only overheating but also overcurrent. For example, the drive control unit 124 may include an ammeter and perform control to open the circuit, that is, cut off the current when the current exceeds a threshold value or exceeds an overcurrent. Thereby, it is possible to prevent electric shock to the user due to current leakage, and failure of the equipment due to the eyeglass lens condensation prevention device 12 getting wet, etc.

Further, the drive control unit 124 may control the amount of air sent out by the air blowing unit 121 according to the user's breathing. That is, when wearing a mask, breath often leaks into the upper part of the mask through the gap between the mask and the face, causing the glasses lenses to fog up. Therefore, the drive control unit 124 may perform control to increase the amount of air sent out by the air blowing unit 121 when the user exhales compared to when the user inhales, thereby preventing dew condensation. The drive control unit 124 may determine the user's breathing timing using a known method. For example, the drive control unit 124 may determine the breathing timing by sensing the vertical movement of the body during inspiration and inspiration. Alternatively, the drive control unit 124 may determine the breathing timing using a wind pressure sensor, a simple air volume meter, or the like that measures exhalation. On the other hand, the drive control unit 124 may be configured to control the air volume according to a certain rhythm and cause the user to breathe in accordance with the rhythm.

Here, the spectacle lens condensation prevention device 12 (for example, the drive control section 124, etc.) may be equipped with a power switch (not shown). When the power off is instructed, the drive control unit 124 may drive the blower unit 121 for a certain period of time (eg, several seconds to several minutes) or until the temperature drops to a predetermined temperature. Since the spectacle lens condensation prevention device 12 heats up during operation, by blowing air for a while after the power is turned off, the housing can be cooled and burns can be prevented.

Note that the drive control unit 124 may have a timer function to save power; for example, when the eyeglass lens condensation prevention device 12 is activated for a certain period of time or when no body movement is detected (i.e., when the eyeglass lens condensation prevention device 12 is not worn), Alternatively, control may be performed to turn off the power. Further, the drive control unit 124 may be configured to be connectable to an external device such as a smartphone via a wireless communication unit (not shown). For example, the drive control unit 124 may perform control in response to instructions such as temperature setting and timer setting from a smartphone or the like. Furthermore, since the ease with which glasses fog up is related not only to temperature but also to humidity, the drive control unit 124 is equipped with a hygrometer, etc., and responds to the humidity of the air (outside air) flowing from the upstream side. The air flowing downstream may be controlled to have the desired temperature, humidity, or air volume.

Further, the power supply section 125 supplies power to at least the blower section 121 and the heating section 122. In the example of FIG. 2, the power supply section 125 supplies power to the blower section 121 and the heating section 122 via the drive control section 124. The power supply section 125 may be powered or charged by a battery, a wired connection to a power source, or a solar panel. Note that in the case of charging, a charging circuit is added, but the drive control section 124 may also take charge of the charging circuit. Therefore, the power supply unit 125 may have a built-in non-rechargeable battery, or may have a built-in rechargeable battery. Further, the power supply device may be supplied with power from an external power source via a wired connection, or may be of a wireless power supply type.

Here, as described above, the attachment part 128 may be configured to be slidably adjustable in the vertical direction with respect to the spectacle lens 10. FIG. 4 is a diagram showing the air flow when the spectacle lens condensation prevention device 12 is positioned at the same position (substantially the same horizontal plane) as the spectacle lens 10 in the vertical direction.

As shown in FIG. 4, when the openings of the spectacle lens 10 and the spectacle lens condensation prevention device 12 are installed on substantially the same horizontal plane, air hits the lens of the user's left eye from the opening, as shown by the solid arrow. Later, as shown by the dashed arrow, the lens changes direction and the wind hits the right eye, which can cause dry eye. Here, FIG. 5 is a diagram showing the air flow when the spectacle lens condensation prevention device 12 is positioned upward with respect to the spectacle lens 10.

As shown in FIG. 5, the attachment part 128 fixes the temple 101 with a clip mechanism or the like, and is configured to be able to slide the main body of the eyeglass lens condensation prevention device 12 in the vertical direction. The mounting portion 128 can be fixed in a vertically shifted position so as not to hit. In the illustrated example, the structure allows the wind direction to be adjusted from above the user's left temple to diagonally downward to the right. That is, when the main body of the eyeglass lens condensation prevention device 12 is slid upward, the main body is attached to the attachment part 128 so that the wind direction control part 123 can rotate with respect to the axial direction of the main body 12 (the axial direction of the temple 101). The wind direction control section 123 may have a structure for rotating itself, or the wind direction control section 123 may have a structure for rotating with respect to the main body 12. As a result, the direction of the air can be adjusted from the upper part of the user's left temple diagonally downward to the right, so that after the air hits the lens of the user's left eye from the opening, as shown by the solid line arrow, As shown by the arrow, the air that changes direction on the lens surface flows toward the right cheek, which can prevent dry eyes.

In the above embodiment, the spectacle lens condensation prevention device 12 has been described for one lens, but the spectacle lens condensation prevention device 12 may be configured for left and right lenses. At this time, the structure is not limited to simply installing the eyeglass lens condensation prevention device 12 on the left and right sides, but may be arbitrarily configured, such as making the structure of the drive control unit 124, power supply unit 125, etc. common to the left and right sides.

According to the present embodiment, the blower section 121 that sends out air, the heating section 122 that is provided upstream, inside, or downstream of the blower section 121 and heats the air sent by the blower section 121; and a wind direction control section 123 that guides the heated air sent out by the lens toward the back surface of the eyeglass lens. Thereby, it is possible to provide the eyeglass lens condensation prevention device 12 that is configured separately from eyeglasses and is capable of preventing dew condensation on eyeglass lenses.

Further, according to the present embodiment, the unit including at least the blowing section 121, the heating section 122, and the wind direction control section 123 further includes an attachment section 128 that can be detachably fixed to the eyeglass body 2. Thereby, the spectacle lens condensation prevention device 12 can be smoothly attached and detached according to necessity depending on the temperature and whether or not a mask is worn.

Furthermore, according to the present embodiment, the attachment portion 128 is positionally adjustable in the vertical direction with respect to the spectacle lens 10, so that airflow can be released diagonally upward or diagonally downward, thereby preventing dry eyes.

Further, according to the present embodiment, a drive control section 124 that controls the amount of air sent out by the air blowing section 121, the temperature of the air heated by the heating section 122, or both is further provided. This makes it possible to appropriately control the air volume and air temperature.

Further, according to the present embodiment, the drive control unit 124 controls the heating by the heating unit 122 according to the temperature, so when the temperature is high, there is a low possibility of dew condensation, so heating is suppressed, thereby saving energy. can be achieved.

Furthermore, according to the present embodiment, the drive control unit 124 prevents overheating or overcurrent, thereby making it possible to prevent burns, electric shock, and the like.

Further, according to the present embodiment, the drive control unit 124 controls the air volume sent out by the air blower unit 121 according to the user's breathing, so the air volume is increased during exhalation when the possibility of condensation increases. Energy savings can be achieved by limiting the air volume during intake when there is a low possibility of condensation.

Further, according to the present embodiment, when the power is turned off, the drive control unit 124 drives the air blowing unit 121 for a certain period of time or until the temperature drops to a predetermined temperature, so that by cooling the heating when the power is turned on, Burns can be prevented.

Furthermore, according to the present embodiment, the power supply section 125 that supplies power to at least the blowing section 121 and the heating section 122 is further provided, so that appropriate current and voltage can be provided.

1 Glasses 2 Glasses body 10 Glasses lenses 11 Frame 12 Glasses lens condensation prevention device 101 Temple 102 Rim 103 Bridge 104 Nose pad 121 Air blower 122 Heating part 123 Wind direction control part 124 Drive control part 125 Power supply 128 Attachment part

Claims (5)

A blower unit that sends out air;
a heating section that is provided upstream, inside, or downstream of the ventilation section and heats the air sent by the ventilation section;
a wind direction control unit that guides the heated air sent out by the air blowing unit toward the back surface of the eyeglass lens;
An eyeglass lens condensation prevention device characterized by comprising: 2. Eyeglass lens condensation prevention according to claim 1, wherein the unit including at least the air blowing section, the heating section, and the wind direction control section further includes an attachment section that can be detachably fixed to the eyeglass body. Device. 3. The eyeglass lens condensation prevention device according to claim 2, wherein the attachment portion is vertically adjustable with respect to the lens of the eyeglasses. Any one of claims 1 to 3, further comprising a drive control unit that controls the amount of air sent out by the air blowing unit, the temperature of the air heated by the heating unit, or both. The eyeglass lens condensation prevention device described in . The drive control section includes:
5. The eyeglass lens condensation prevention device according to claim 4, wherein the air volume sent out by the air blowing section is controlled according to the user's breathing.

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