Patent Publication Number: US-2015077696-A1

Title: Eyewear

Description:
CROSS REFERENCE TO RELATED APPLICATION 
     The contents of the following Japanese patent applications are incorporated herein by reference: 
     NO. 2013-192035 filed on Sep. 17, 2013, and 
     NO. 2013-245150 filed on Nov. 27, 2013. 
     BACKGROUND 
     1. Technical Field 
     The present invention relates to eyewear. 
     2. Related Art 
     There are glasses known for preventing allergies and dry eye, and these glasses have a frame that includes a humidifier having a container that houses a liquid holding component. For example, see Patent Documents 1 to 3.
     Patent Document 1: Japanese Patent Application Publication No. 2000-005215   Patent Document 2: Japanese Utility Model Registration No. 3152412   Patent Document 3: Japanese Design Registration No. 1069214   

     SUMMARY 
     However, there is a problem that a member retaining a liquid is easily removed from the frame. 
     So as to solve the above-stated problem, according to the first aspect of the present invention, provided is eyewear including: a liquid retainer including a cavity to retain a liquid; and a frame in which a housing is formed to house at least a part of the liquid retainer, where the liquid retainer is supported to the frame via a hinge, to be movable between a position at which the liquid retainer is housed in the housing and a position at which the liquid retainer is not housed in the housing, and the liquid retainer includes a gaseous body transmission member transmitting a gaseous body from the cavity towards a face when the liquid retainer is housed in the housing and the frame is worn on the face. 
     The above and other objects can be achieved by combinations described in the independent claims. The dependent claims define further advantageous and exemplary combinations of the innovations herein. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view of exemplary glasses  100 . 
         FIG. 2  schematically shows glasses  100  whose liquid container  130  is housed in the opening  140 . 
         FIG. 3  schematically shows a perspective development view of the glasses  100 . 
         FIG. 4  schematically shows a perspective view of the liquid container  130 . 
         FIG. 5  schematically shows a perspective view of the liquid container  230  according to another embodiment. 
         FIG. 6  schematically shows a perspective view of the liquid container  330  according to another embodiment. 
         FIG. 7  schematically shows a frame  420  and a liquid container  430  according to another embodiment. 
         FIG. 8  schematically shows the frame  420  in a folded state. 
         FIG. 9  schematically shows the frame  420  in an unfolded state. 
         FIG. 10  schematically shows a perspective development view of the frame  420  and the liquid container  430 . 
         FIG. 11  schematically shows a state in which the liquid container  430  is removed from the frame  420 . 
         FIG. 12  schematically shows a frame  720  and a liquid container  730  according to another embodiment of the glasses  100 . 
         FIG. 13  schematically shows a state in which the liquid container  730  is removed from the frame  720 . 
         FIG. 14  is a perspective view of a lid  737 . 
         FIG. 15  is a perspective view of the lid  737 . 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Hereinafter, some embodiments of the present invention will be described. The embodiments do not limit the invention according to the claims, and all the combinations of the features described in the embodiments are not necessarily essential to means provided by aspects of the invention. In addition, the embodiments are described with reference to the drawings. In the drawings, the same or similar portions are assigned the same reference numeral, and overlapping explanation may be occasionally omitted. The drawings are schematic views, and do not indicate the actual dimensions of the embodiments. For ease of explanation, different drawings may include portions in different scales. 
       FIG. 1  is a schematic view of exemplary glasses  100  according to an embodiment. The glasses  100  include a pair of lenses  110 , a frame  120 , and liquid containers  130 . The glasses  100  and the frame  120  are an example of eyewear. The glasses  100  are equipment to be worn by a wearer around his or her eyes. 
     The liquid container  130  is an example of a liquid retainer for retaining a liquid. An opening  140  is provided through a part of the frame  120 . At least a part of the liquid container  130  may be housed in the opening  140 . The opening  140  is an example of a housing in which at least a part of the liquid container  130  is housed. As detailed later, the liquid container  130  is supported by the frame  120  via a hinge, to be movable between a position at which the liquid container  130  is housed in the opening  140  and a position at which the liquid container  130  is not housed in the opening  140 .  FIG. 1  schematically shows glasses  100  in the state in which the liquid container  130  is not housed in the opening  140 . 
       FIG. 2  schematically shows glasses  100  whose liquid container  130  is housed in the opening  140 . A plurality of air holes  135  are formed on the side surface  134  in the liquid container  130 , being a surface to face a face of the wearer when the liquid container  130  is housed in the opening  140  and the frame  120  is worn on the face of the wearer. The air holes  135  penetrate up to the later-described cavity  132 , and transmit gaseous body but does not transmit a liquid. The liquid retained in the liquid container  130  is vaporized to be provided towards the face of the wearer through the air holes  135 . Therefore, the glasses  100  can be used as measure to prevent dry eye. The glasses  100  can also be used as measure against allergies, in addition to or instead of measure to prevent dry eye. 
     The frame  120  includes a nose pad  121 , a rim  122 , a bridge  123 , an end piece portion  124 , a hinge spindle member  150 , a temple  126 , and an ear band  128 . The nose pad  121  contacts the nose of the face of the wearer when the frame  120  is worn on the face of the wearer. When the frame  120  is worn on the face of the wearer, the nose pad  121  positions the frame  120  relative to the face of the wearer. The bridge  123  is positioned between the pair of rims  122 . 
     The rim  122  holds the lens  110 . The lens  110  may be a lens for correcting refractive error of the eye of a wearer. Examples of the lens  110  may be lens for correction of near-sightedness, lens for correction of far-sightedness, or the like. The lens  110  is an example of the optical component held by the rim  122 . The optical component has an optical characteristic suited for the application as glasses  100 . For example, the optical component may have a wavelength selection characteristic of selectively transmitting light of a specific wavelength region, in addition to the function of a lens. Note that the optical component may not include a lens function. For example, the refractive power of the optical component may be substantially 0. In this case, the refractive error of eyes of the wearer will not be substantially corrected. In other words, the eyesight of the wearer will not be corrected. 
     The rim  122  includes a hood member elongating towards the wearer from around the lens  110 . Accordingly, the gaseous body evaporated from the liquid container  130  can be restrained from diffusing. The end piece portion  124  also called an end piece is provided at the end of the rim  122 , and is connected to the temple  126  via the hinge spindle member  150 . The pair of temples  126  sandwich the head of a wearer. The ear band  128  is positioned at the tip of the temple  126 . At least a portion of the ear band  128  contacts the wearer near his or her ear, when the frame  120  is worn. The ear band  128  may be a pad member covering at least a portion of the temple  126 . 
       FIG. 3  schematically shows a perspective development view of the glasses  100 .  FIG. 3  schematically shows a perspective development view of the glasses  100  from the left eye side of the bridge  123 .  FIG. 4  schematically shows a perspective view of the liquid container  130 . The liquid container  130  includes a container main body  131  and a lid  137 . 
     A cavity  132  for retaining a liquid is formed inside the liquid container  130 . The cavity  132  can accumulate a liquid. An example of the liquid retained in the cavity  132  is water. The inside of the cavity  132  may be processed to be water repellent. The inside of the cavity  132  may be antimicrobial-impregnated. 
     An opening for supplying a liquid in the cavity  132  when the liquid container  130  is not housed in the opening  140  is formed through the liquid container  130 . The opening is formed in a position facing the inner surface of the opening  140  when the liquid container  130  is housed in the opening  140 . Specifically, the opening is formed on the upper portion of the liquid container  130 . 
     The lid  137  seals the upper opening of the liquid container  130 . An insertion opening  138  is formed through the lid  137 . The insertion opening  138  is an example of a liquid supply port penetrating from outside to the cavity  132 . A liquid injection tool such as a dropper can be inserted through the insertion opening  138 . The liquid injection tool can be inserted through the insertion opening  138  when the liquid container  130  is not housed in the opening  140 , to supply a liquid from the liquid injection tool to the cavity  132 . For example, the insertion opening  138  has a circular shape whose section has a diameter of 1.5 mm. 
     The lid  137  may be formed by soft resin. The lid  137  may be formed by a material having elasticity higher than elasticity of the material forming the container main body  131 . The material of the lid  137  may be elastomer such as crude rubber, synthetic rubber, silicone rubber, or the like. In this case, when the liquid container  130  is housed in the opening  140  of the frame  120 , the lid  137  provided between the inner surface of the opening  140  and the liquid container  130  will press them, to make it hard to remove the liquid container  130  from the opening  140 . 
     The lid  137  may be provided to be removable with respect to the upper opening of the liquid container  130 . A user can remove the lid  137  from the upper opening of the liquid container  130  when the liquid container  130  is not housed in the opening  140 . Because the lid  137  can be removed to expose the opening, a liquid can be supplied through the exposed opening to the cavity  132  without using any liquid injection tool. In addition, the liquid retained in the cavity  132  can be discharged to outside through the exposed opening from the cavity  132 . Therefore, the liquid retained in the cavity  132  can be easily exchanged. 
     The liquid container  130  is linked to the frame  120  by means of the hinge spindle member  150 . Specifically, the liquid container  130  is linked to the end piece portion  124  by means of the hinge spindle member  150 . More specifically, the liquid container  130  is supported with respect to the end piece portion  124  to be movable, by means of the hinge spindle member  150 . The container main body  131  of the liquid container  130  includes an insertion member  136  to which the hinge spindle member  150  is inserted. The hinge spindle member  150  is inserted to the insertion opening  174  of the insertion member  136 . 
     The rim  122  is provided with the insertion member  160  through which the hinge spindle member  150  is inserted. An insertion opening  162  of the insertion member  160  is inserted through the hinge spindle member  150 . The temple  126  is provided with the insertion member  170  through which the hinge spindle member  150  is inserted. The hinge spindle member  150  is inserted through the insertion opening  172  of the insertion member  170 . In this way, the hinge spindle member  150  is inserted through the insertion opening  162 , the insertion opening  172 , and the insertion opening  174 . The hinge spindle member  150  includes a shaft member  152  inserted from the upper insertion member  160 , and a shaft member  154  inserted from the lower insertion member  160 . The shaft member  154  and the shaft member  152  include an insertion member to insert to each insertion opening and a head portion larger than the insertion opening  162 . The shaft member  154  is assembled so that at least a part of the insertion member of the shaft member  154  is housed in the insertion member of the shaft member  152 . The insertion member of the shaft member  152  is inserted through the respective insertion opening, to be assembled to the end piece portion  124  as a hinge spindle member  150  together with the shaft member  154 . 
     The hinge spindle member  150  and the insertion member  136  provide a hinge mechanism supporting the liquid container  130  with respect to the frame  120  movably. This hinge mechanism supports, to be movable, the liquid container  130  with respect to both the end piece portion  124  and the temple  126 . Specifically, the liquid container  130  rotates independently around the hinge spindle member  150 , with respect to the temple  126  and the end piece portion  124 . Therefore, the liquid container  130  can rotate around the hinge spindle member  150  and can move between a position housed in the opening  140  and a position not housed in the opening  140 . In this way, the hinge mechanism supports the liquid container  130  to the frame  120  to be movable between the position at which the liquid container  130  is housed in the opening  140  and the position at which the liquid container  130  is not housed in the opening  140 . For this reason, the liquid container  130  can be supported to the frame in a manner in which the liquid to be retained in the liquid container  130  can be injected and exchanged easily. In addition, the liquid container  130  is hard to remove from the frame  120 , which reduces a possibility of losing the liquid container  130 . 
     The hinge spindle member  150  and the insertion member  170  provide a hinge mechanism supporting the temple  126  to the end piece portion  124  movably. This hinge mechanism enables the temple  126  to be movably supported to the end piece portion  124  between the state in which the temple  126  is folded with respect to the end piece portion  124  and the state in which the temple  126  is not folded with respect to the end piece portion  124  as the left temple  126  of  FIG. 2  shows. 
     In this way, the opening  140  is formed on the end piece portion  124  of the frame  120 , and the temple  126  is supported movably with respect to the end piece portion  124 , via the hinge. The liquid container  130  and the temple  126  are rotatably supported by the hinge around the common hinge spindle member  150 . Consequently, the spindle of the hinge can be shared, to be able to reduce the number of parts compared to the case in which the spindle of the hinge is not shared. It is possible to make a smaller hinge mechanism compared to the case in which the spindle of the hinge is not shared, as well as maintaining a space retaining the liquid wider. 
     The above-explained hinge mechanism enables the liquid container  130  and the temple  126  to independently rotate around the hinge spindle member  150 . For example, it is possible to fold the temple  126  with respect to the end piece portion  124 , while the liquid container  130  is housed in the opening  140 . Even by folding the temple  126  with respect to the end piece portion  124 , the liquid container  130  does not move easily with respect to the end piece portion  124 . By rotating the liquid container  130  around the hinge spindle member  150  while the temple  126  is folded with respect to the end piece portion  124 , it is possible to remove out the liquid container  130  from the opening  140 . 
     If the temple  126  is not folded with respect to the end piece portion  124 , the end-piece-portion-side side surface  184  of the temple  126  abuts against the temple-side side surface  186  of the container main body  131  of the liquid container  130 . Therefore, if the temple  126  is not folded with respect to the end piece portion  124 , the liquid container  130  will not be easily removed from the opening  140 . Therefore, when the glasses  100  are worn by a wearer, the liquid container  130  will not be easily removed from the opening  140 . 
     When the liquid container  130  is housed in the opening  140 , the liquid container  130  has a side surface  134  and a side surface  133  opposite to the side surface  134 , where the side surface  134  will be provided to face the face when the frame  120  provided with the liquid container  130  is worn on the face. The side surface  134  and the side surface  133  may have a form conforming to the side surface of the frame  120 . For example, the side surface  134  and the side surface  133  may have a form conforming to the side surface of the end piece portion  124 . The side surface  133  may have a form conforming to the outer surface  182  of the temple  126 . The side surface  134  may have a form conforming to the inner surface  181  which is a surface opposite to the outer surface  182  in the temple  126 . The side surface  134  and the side surface  133  may be provided in the frame  120  more inner than the corresponding side surface of the frame  120 . The side surface  133  has a form conforming to the outer side surface of the end piece portion  124 , and the side surface  134  may be provided inner than the inner side surface of the end piece portion  124   
     The air holes  135  of the glasses  100  are provided in matrix formation of 4 rows and 7 columns on the side surface  134 . The air hole  135  is an example of the gaseous body transmission member causing a gaseous body to pass from the cavity  132  to the face, when the liquid container  130  is housed in the opening  140  and the frame  120  is mounted on the face. Specifically, the air hole  135  does not cause a liquid to pass from the cavity  132  to the side surface  134 , but cause a gaseous body to pass. In an example, a section form of the air hole  135  parallel to the side surface  134  is circular having a diameter of 1 mm. 
     Accordingly, a liquid is restrained from being leaked from the air hole  135 . For example, a liquid leaking from the air hole  135  is restrained even if the air hole  135  is not covered with water retentive or water absorbing materials such as felt, paper, sea sponge, sponge, water absorptive polymer, and hydrogel, or if the cavity  132  is not covered with a filler material made of water retentive or water absorbing materials. Therefore, it becomes possible to accumulate a liquid inside the liquid container  130  without using any filler material. Consequently, compared to a case in which the entire inside of the liquid container  130  is filled with a filler material, more liquid in quantity can be accumulated. Furthermore, even in a case in which the liquid container  130  is not filled with any filler material, a liquid leak from the air hole  135  can be restrained, thereby enabling to use the glasses  100  hygienically. 
     The liquid container  130  may not have any lid  137 . When the liquid container  130  is housed in the opening  140 , even without the lid  137 , the liquid retained in the cavity  132  can be restrained from leaking outside, if the opening of the cavity  132  can be substantially sealed with the inside of the opening  140 . 
       FIG. 5  schematically shows a perspective view of the liquid container  230  according to another embodiment. The members respectively having the same configuration as respective portions of the liquid container  130  are assigned the same reference numerals, and explanation is occasionally omitted. 
     The air holes  135  are provided in a matrix formation of 3 rows by 7 columns on the side surface  134 . An insertion opening  238  is provided through the lid  137 . The sectional form of the insertion opening  238  is non-circular. The lengthwise direction of the insertion opening  238  is set as “a”, and the short side direction of the insertion opening  238  is set as “b”. For example, “a” may be 4 mm, and “b” may be 3 mm. In another example, “a” may be 7 mm, and “b” may be 3 mm. Many other combinations of the value of “a” and the value of “b” may be possible. The sectional form of the insertion opening  238  may be ellipsoidal. Many other sectional forms are possible for the insertion opening  238 . In addition, the air holes  135  may be provided in a matrix formation of 2 rows by 7 columns on its side surface  134 . 
       FIG. 6  schematically shows a perspective view of the liquid container  330  according to another embodiment. The members respectively having the same configuration as respective portions of the liquid container  130  are assigned the same reference numerals, and explanation is occasionally omitted. 
     The liquid container  330  includes a container main body  131  and a lid  137 . The lid  137  is provided with an insertion opening  138 , and a slit  139  linking to the insertion opening  138 . Since the lid  137  is provided with a slit  139  inking to the insertion opening  138 , it is possible to supply a liquid to the liquid container  130  using various kinds of liquid supply tools. 
     In the liquid container  230  explained with reference to  FIG. 5  or the like, the lid  137  is not provided with any slit corresponding to the slit  139  of the liquid container  330 . However, just as the slit  139  of the liquid container  330 , a slit linking to the insertion opening  238  can be provided for the lid  137  for the liquid container  230 . 
     Regarding the liquid container  130 , the liquid container  230 , and the liquid container  330 , the sectional form of the air hole  135  was explained to be circular having a diameter of 1 mm. In addition, an example in which a plurality of air holes  135  are provided to be aligned in a matrix formation was explained. However, the form, number, and positioning of the air holes  135  are not limited as explained above. For example, there may be a single air hole  135 . In other words, there may be one or more air holes  135 . When a plurality of air holes  135  are provided, the plurality of air holes  135  may not be aligned. The form of the air holes  135 , as well as the number and positioning thereof may be determined to cause a gaseous body to pass from the cavity  132  to the side surface  134 , but not to cause a liquid to pass through. 
     The form of the air hole  135  may be determined so as to enable water vapor to pass from the cavity  132  to the inner surface of the frame  120 , but not to cause any pure water or tap water to pass through. The form of the air hole  135  may be the sectional form of the air hole  135 , the size of the section, and the distance for the air hole  135  from the surface towards the cavity  132  to the inner surface of the frame  120 , for example. Water-vapor transmission ratio testing method determined by JIS Z0208 (Cup method) and water-vapor transmission ratio testing method determined by JIS K7129 (Lyssy method) may be used to determine whether water vapor transmits through the air hole  135 , by measuring the amount of water vapor passing through the test piece. Determination that water vapor passes through the air hole  135  may be done when the water vapor transmission amount when the test piece is provided with the air hole  135  is more than the water vapor transmission amount when the test piece is not provided with the air hole  135 . 
     Determination on whether pure water or tap water transmits through the air hole  135  may be made by determining whether pure water or tap water passes through the air hole  135  when left still for  10  minutes in the state in which the pressure difference of 9.806 Pa or below is caused between the opening of the air hole  135  towards the cavity  132  and the opening of the air hole  135  towards the inner surface of the frame  120 . Whether pure water or tap water has passed through the air hole  135  can be determined by confirming leakage of water in liquid form by visual observation. Preferably, the pressure difference may be greater than 9.806 Pa and equal to or below 49.03 Pa, and more preferably, the pressure difference may be greater than 49.03 Pa and equal to or below 98.06 Pa. Still more preferably, the pressure difference may be greater than 98.06 Pa and equal to or below 294.18 Pa. 
     When the sectional form of the air hole  135  is circular, the diameter of the air hole  135  may be equal to or above 0.1 mm and equal to or below 1.5 mm, preferably equal to or above 0.3 mm and equal to or below 1.2 mm, and more preferably equal to or above 0.5 mm and equal to or below 1 mm. When the sectional form of the air hole  135  is ellipsoidal, the major axis of the air hole  135  may be equal to or above 0.1 mm and equal to or below 1.7 mm, preferably equal to or above 0.5 mm and equal to or below 1.4 mm, more preferably equal to or above 0.7 mm and equal to or below 1.2 mm. The distance from the surface towards the cavity  132  to the inside surface of the frame  120 , with respect to the air hole  135 , may be equal to or above 0.1 mm and equal to or below 1.5 mm, preferably equal to or above 0.3 mm and equal to or below 1.2 mm, more preferably equal to or above 0.5 mm and equal to or below 1 mm. 
     The summation of the volumes of the plurality of air holes  135  may be smaller than the volume of the cavity  132 . Here, when the filler material is provided inside the cavity  132 , the volume of the portion of the inside of the cavity  132  occupied by the filler material is not included in the volume of the cavity  132 . 
     The air hole  135  may be provided above the position corresponding to the water surface when the frame  120  provided with the liquid container  130  is worn on the face. Note that when the size of the air hole  135  is sufficiently small, the air hole  135  may be provided below the position corresponding to the water surface when the frame  120  provided with the liquid container  130  is worn on the face. 
     According to the above-explained configuration, the gaseous body generated by vaporization of the liquid accumulated in the cavity  132  passes through the air hole  135  to be supplied towards the inner side of the frame  120 . In addition, since the air hole  135  does not pass through the liquid accumulated in the cavity  132 , scattering of the liquid onto the face of the wearer can be restrained. 
     In the present embodiment, the air hole  135  is explained to be a gaseous body transmission member. However, the gaseous body transmission member is not limited to this. The gaseous body transmission member may include an organic polymer film or an inorganic porous film causing a gaseous body to permeate but not a liquid. The gaseous body transmission member may include an organic polymer film or an inorganic porous film causing a water vapor to permeate but not pure water or tap water. The gaseous body transmission member may be a silicone rubber. According to this configuration, liquid leak from the air hole  135  can also be restrained. For example, even when the air hole  135  is not covered with water retentive or water absorbing materials, liquid leak from the air hole  135  can be restrained. In this case, more liquid in amount can be accumulated. It is also possible to use the glasses  100  hygienically. 
     An example in which the glasses  100  are not provided with water retentive or water absorbing materials inside the cavity  132  has been explained. However, the glasses  100  are not limited to this. Water retentive or water absorbing materials such as felt, paper, sea sponge, sponge, water absorptive polymer, and hydrogel may configure a part of the gaseous body transmission member. There may be water retentive or water absorbing materials provided in the cavity  132 . Accordingly, even when the size of the air hole  135  is large, liquid leak from the cavity  132  can be restrained. Note that in this case, the upper edge of the water retentive or water absorbing materials is preferably above the liquid surface of the liquid accumulated in the cavity. 
     When water retentive or water absorbing materials are provided inside the cavity  132 , the volume of the inside of the cavity  132  occupied by the water retentive or water absorbing materials may be smaller than half the volume of the cavity  132  in the state in which there is no water retentive or water absorbing material provided in the cavity  132 . By doing so, more liquid in amount can be accumulated in the cavity  132 . 
     An example in which the liquid container  130  of the glasses  100  is open/close from the outer surface of the frame  120 , and the liquid container  130  moves between the position at which the liquid container  130  is housed in the opening  140  and the position at which the liquid container  130  is not housed in the opening  140  was explained. However, the direction in which the liquid container  130  is open/close is not limited to this. For example, the liquid container  130  may be open/close from the inner surface. The liquid container  130  may further be open/close from both of the outer surface and the inner surface. 
     An example in which the liquid container  130  of the glasses  100  is housed in the opening  140  of the frame  120  was explained. However, the housing that houses therein the liquid container  130  is not limited to this. For example, the liquid container  130  may be housed in the concave portion formed for the frame  120 . For example, the concave portion may be formed on the inner surface or the outer surface of the frame  120 , to house the liquid container  130  in the concave portion. For example, the concave portion housing the liquid container  130  may be provided on the inner surface of the frame  120 . In this case, the liquid container  130  may be open/close from the inner surface of the frame  120 . The concave portion housing therein the liquid container  130  may be formed on the outer surface of the frame  120 . In this case, the liquid container  130  may be open/close from the outer surface of the frame  120 . 
     An example in which the housing that houses the liquid container  130  is provided in the end piece portion  124  in the glasses  100  was explained. However, the position of the housing is not limited to this. The housing may be formed in the temple. 
     An example in which the spindle supporting movably the liquid container  130  with respect to the frame  120  is also used as the spindle supporting movably the temple  126  with respect to the end piece portion  124  in the glasses  100  was explained. However, the mechanism for supporting the liquid container  130  movably to the frame  120  is not limited to this. The liquid container  130  may be supported movably to the frame  120  by the spindle different from the spindle movably supporting the temple  126  with respect to the end piece portion  124 . For example, the glasses  100  may include a hinge for movably supporting the liquid container  130  to the frame  120  and a hinge for movably supporting the temple  126  to the end piece portion  124 . In addition, the liquid container  130  may be supported movably with respect to the frame  120  by means of a displacement mechanism other than the hinge mechanism. 
       FIG. 7  through  FIG. 11  schematically show the frame  420  and the liquid container  430  in another embodiment of the glasses  100 .  FIG. 7  through  FIG. 11  mainly show the area including the left-eye side portion of the glasses. The frame  420  corresponds to the frame  120 , and the liquid container  430  corresponds to the liquid container  130 . Among the configurations related to the frame  420  and the liquid container  430 , the configurations different from those related to the frame  120  and the liquid container  130  described above are mainly explained below, and occasionally the configurations similar to the configurations of the frame  120  and the liquid container  130  may be omitted below. 
       FIG. 7  schematically shows a state in which the liquid container  430  is not housed in the frame  420 .  FIG. 8  and  FIG. 9  schematically show a state in which the liquid container  430  is housed in the frame  420 .  FIG. 8  schematically shows a folded state of the frame  420 .  FIG. 9  schematically shows the frame  420  in an unfolded state.  FIG. 10  schematically shows a perspective development view of the frame  420  and the liquid container  430 .  FIG. 11  schematically shows a state in which the liquid container  430  is removed from the frame  420 , and the lid  437  is removed from the container main body  431 . As shown in  FIG. 11 , the liquid container  430  is provided to the frame  420  to be removable, unlike the liquid container  130 . 
     The liquid container  430  is an example of the liquid retainer retaining a liquid. A part of the frame  420  is provided with an opening  440 . At least one part of the liquid container  430  can be housed in the opening  440 . The opening  440  is an example of the housing that houses at least a part of the liquid container  430 . As described in more detail below, the liquid container  430  is supported, by means of a hinge, by the frame  420  to be movable between the position at which the liquid container  430  is housed in the opening  440  and the position at which the liquid container  430  is not housed in the opening  440 . 
     In the liquid container  430 , a plurality of air holes  435  are formed corresponding to the air holes  135 , on the side surface  434  that would oppose to the face when the frame  420  is worn on the face of a wearer with the liquid container  430  being housed in the opening  440 . The air holes  435  penetrate up to the cavity  432  of the container main body  431 , and permit gaseous body to pass but do not permit a liquid to pass. The liquid retained in the liquid container  430  is vaporized to go to the face of the wearer via the air holes  435 . 
     The frame  420  includes a rim  422  corresponding to the rim  122 , a bridge  423  corresponding to the bridge  123 , an end piece portion  424  corresponding to the end piece portion  124 , a hinge spindle member  450  corresponding to the hinge spindle member  150 , and a temple  426  corresponding to the temple  126 . The frame  420  further includes a nose pad corresponding to the nose pad  121  and an ear band corresponding to an ear band  128 . The bridge  423  is positioned between a pair of rims  422 . 
     The rim  422  includes a hood member elongating in the direction of a wearer from around the lens. Accordingly, the gaseous body vaporized from the liquid container  430  is restrained from dispersing. The end piece portion  424  is provided at the edge of the rim  422 , and is coupled with the temple  426  via the hinge spindle member  450 . The pair of temples  426  sandwich the head of the wearer. 
     The liquid container  430  includes a container main body  431  corresponding to the container main body  131 , and a lid  437  corresponding to the lid  137 . 
     A cavity  432  for retaining a liquid is formed inside the liquid container  430 . The cavity  432  corresponds to the cavity  132 . The cavity  432  can accumulate a liquid. An example of the liquid retained in the cavity  432  is water. The inside of the cavity  432  may be processed to be water repellent. The inside of the cavity  432  may be antimicrobial-impregnated. 
     An opening for supplying a liquid in the cavity  432  is formed through the liquid container  430 , in the state in which the liquid container  430  is not housed in the opening  440 . The opening is formed in a position facing the inner surface of the opening  440  when the liquid container  430  is housed in the opening  440 . Specifically, the opening is formed on the upper portion of the liquid container  430 . 
     The lid  437  seals the upper opening of the liquid container  430 . An insertion opening  438 , corresponding to the insertion opening  138 , is formed through the lid  437 . The insertion opening  438  is an example of a liquid supply port penetrating from outside to the cavity  432 . A liquid injection tool such as a dropper can be inserted through the insertion opening  438 . The liquid injection tool can be inserted through the insertion opening  438  when the liquid container  430  is not housed in the opening  440 , to supply a liquid from the liquid injection tool to the cavity  432 . For example, the insertion opening  438  has a circular sectional shape having a diameter of 3.5 mm. The sectional diameter of the insertion opening  438  may be equal to or above 1 mm and equal to or below 7 mm. Preferably, the sectional diameter of the insertion opening  438  may be equal to or above 2 mm and equal to or below 5 mm. 
     The lid  437  may be formed by soft resin. The lid  437  may be formed by a material having elasticity higher than the elasticity of the material forming the container main body  431 . The material of the lid  437  may be elastomer such as crude rubber, synthetic rubber, silicone rubber, or the like. In this case, when the liquid container  430  is housed in the opening  440  of the frame  420 , the lid  437  provided between the inner surface of the opening  440  and the liquid container  430  will press them, to make it hard to remove the liquid container  430  from the opening  440 . 
     The lid  437  may be provided to be removable with respect to the upper opening of the liquid container  430 . A user can remove the lid  437  from the upper opening of the liquid container  430  when the liquid container  430  is not housed in the opening  440 . Because the lid  437  can be removed to expose the upper opening of the liquid container  430 , a liquid can be supplied through the exposed opening to the cavity  432  without using any liquid injection tool. In addition, the liquid retained in the cavity  432  can be discharged to outside from the cavity  432  through the exposed upper opening. Therefore, the liquid retained in the cavity  432  can be easily exchanged. 
     The liquid container  430  is linked to the frame  420  by means of the hinge spindle member  450 . Specifically, the liquid container  430  is linked to the end piece portion  424  by means of the hinge spindle member  450 . More specifically, the liquid container  430  is supported to be movable with respect to the end piece portion  424 , by means of the hinge spindle member  450 . The container main body  431  of the liquid container  430  includes an insertion member  436  to which the hinge spindle member  450  is inserted. The hinge spindle member  450  is inserted to the insertion opening  474  of the insertion member  436  of the liquid container  430 . The insertion member  436  corresponds to the insertion member  136 , and the insertion opening  474  corresponds to the insertion opening  174 . 
     The insertion opening  474  retains the hinge spindle member  450  to be rotatable. The insertion member  436  includes a slit portion  510  along the rotation axis of the hinge spindle member  450 . The slit portion  510  provides a link portion linking between the insertion opening  474  and the outside of the insertion member  436 . On the sectional surface orthogonal to the rotation axis of the hinge spindle member  450 , the inner periphery of the insertion opening  474  is distanced by a portion provided with the slit portion  510 . 
     On the sectional surface orthogonal to the rotation axis of the hinge spindle member  450 , the diameter of the insertion opening  474  is larger than the diameter of the hinge spindle member  450 . On the sectional surface orthogonal to the rotation axis of the hinge spindle member  450 , the width of the slit portion  510  is smaller than the diameter of the hinge spindle member  450 . 
     When removing the liquid container  430  from the frame  420 , in the state in which the liquid container  430  is mounted to the frame  420 , when the hinge spindle member  450  of the insertion opening  474  exerts force in the direction towards the slit portion  510 , onto the liquid container  430 , while the liquid container  430  is open, the slit portion  510  is pressed by the hinge spindle member  450  to be elastically pressed and extended. The hinge spindle member  450  goes through the extended slit portion  510 , to be removed from the insertion member  436 . When the hinge spindle member  450  is removed from the insertion member  436 , the slit portion  510  returns elastically to its original position. 
     When mounting the liquid container  430  to the frame  420  from the state in which the liquid container  430  is removed from the frame  420 , the slit portion  510  is caused to abut against the hinge spindle member  450 , and as a result of the hinge spindle member  450  applying a force in the direction towards the insertion opening  474 , on the liquid container  430 , the slit portion  510  is pressed by the hinge spindle member  450  to be elastically extended. The hinge spindle member  450  goes through the extended slit portion  510 , to be inserted in the insertion opening  474 . Then, when the hinge spindle member  450  has been in the insertion opening  474 , the slit portion  510  elastically returns to its original position. Accordingly, the hinge spindle member  450  fits the insertion opening  474  to be rotatable. 
     When the liquid container  430  is mounted to the frame  420 , the liquid container  430  rotates around the hinge spindle member  450 , while inner periphery of the insertion opening  474  is in contact with the outer surface of the hinge spindle member  450 , in the state in which the hinge spindle member  450  fits the insertion opening  474  to be rotatable. Therefore, to open/close the liquid container  430 , the hinge spindle member  450  is not easily removed from the slit portion  510 , to facilitate smooth opening/closing. 
     In this way, the liquid container  430  is removably mounted to the frame  420 . For this reason, the liquid container  430  can be exchanged with a new liquid container. In addition, after the liquid container  430  is removed from the frame  420  and cleaned, the liquid container  430  can be mounted to the frame  420  again. Therefore, the glasses can be used hygienically. 
     An insertion member  460  is formed on the rim  422 , through which the hinge spindle member  450  is inserted. The hinge spindle member  450  is inserted to the insertion opening  462  of the insertion member  460 . The insertion member  460  corresponds to the insertion member  160 . The insertion opening  462  corresponds to the insertion opening  162 . 
     An insertion member  470  is formed on the temple  426 , through which the hinge spindle member  450  is inserted. The hinge spindle member  450  is inserted to the insertion opening  472  of the insertion member  470 . The insertion member  470  corresponds to the insertion member  170 . The insertion opening  472  corresponds to the insertion opening  172 . 
     In this way, the hinge spindle member  450  is inserted to the insertion opening  462 , the insertion opening  472 , and the insertion opening  474 . The hinge spindle member  450  includes a shaft member  452  inserted from the upper insertion member  460  and a shaft member  454  inserted from the lower insertion member  460 . The shaft member  452  corresponds to the shaft member  152 , and the shaft member  454  corresponds to the shaft member  154 . 
     The shaft member  454  and the shaft member  452  include an insertion member to insert to each insertion opening and a head portion larger than the insertion opening  462 . The shaft member  454  is assembled so that at least a part of the insertion member of the shaft member  454  is housed in the insertion member of the shaft member  452 . The insertion member of the shaft member  452  is inserted to the respective insertion opening, to be assembled to the end piece portion  424  as a hinge spindle member  450  together with the shaft member  454 . 
     The hinge spindle member  450  and the insertion member  436  provide a hinge mechanism movably supporting the liquid container  430  with respect to the frame  420 . This hinge mechanism enables the liquid container  430  to be movably supported with respect to both the end piece portion  424  and the temple  426 . Specifically, the liquid container  430  rotates independently around the hinge spindle member  450 , with respect to the temple  426  and the end piece portion  424 . Therefore, the liquid container  430  can rotate around the hinge spindle member  450 , and can more between the position at which it is housed in the opening  440  and the position at which it is not housed in the opening  440 . In this way, the hinge mechanism supports the liquid container  430  to the frame  420  to be movable between the position at which the liquid container  430  is housed in the opening  440  and the position at which the liquid container  430  is not housed in the opening  440 . Therefore, the liquid container  430  can be supported to the frame in such a manner as to facilitate injection or exchange of liquid retained in the liquid container  430 . In addition, the liquid container  430  is hard to be removed from the frame  420 , and the possibility of losing the liquid container  430  can be reduced. 
     The hinge spindle member  450  and the insertion member  470  provide a hinge mechanism supporting the temple  426  to the end piece portion  424  movably. This hinge mechanism supports the temple  426  movably to the end piece portion  424 , between the state in which the temple  426  is folded with respect to the end piece portion  424  as shown in  FIG. 7 ,  FIG. 8 , and  FIG. 11 , and the state in which the temple  426  is not folded with respect to the end piece portion  424  as illustrated in  FIG. 9 . 
     In this way, the opening  440  is formed on the end piece portion  424  of the frame  420 , and the temple  426  is supported movably with respect to the end piece portion  424  via the hinge. The liquid container  430  and the temple  426  are rotatably supported by the hinge around the common hinge spindle member  450 . Consequently, the spindle of the hinge can be shared, to be able to reduce the number of parts compared to the case in which the spindle of the hinge is not shared. It is possible to make a smaller hinge mechanism compared to the case in which the spindle of the hinge is not shared, as well as maintaining a space retaining the liquid wider. 
     The above-explained hinge mechanism enables the liquid container  430  and the temple  426  to independently rotate around the hinge spindle member  450 . For example, it is possible to fold the temple  426  with respect to the end piece portion  424 , while the liquid container  430  is housed in the opening  440 . Even by folding the temple  426  with respect to the end piece portion  424 , the liquid container  430  does not easily move with respect to the end piece portion  424 . By rotating the liquid container  430  around the hinge spindle member  450  while the temple  426  is folded with respect to the end piece portion  424 , it is possible to remove out the liquid container  430  from the opening  440 . 
     If the temple  426  is not folded with respect to the end piece portion  424 , the end-piece-portion-side side surface  484  of the temple  426  abuts against the temple-side side surface  486  of the container main body  431  of the liquid container  430 . Therefore, if the temple  426  is not folded with respect to the end piece portion  424 , the liquid container  430  will not be easily removed from the opening  440 . Therefore, when the glasses are worn by a wearer, the liquid container  430  will not be easily removed from the opening  440 . 
     When the liquid container  430  is housed in the opening  440 , the liquid container  430  has a side surface  434  and a side surface  433  provided outside and opposite to the side surface  434 , where the side surface  434  will be provided to face the face when the frame  420  provided with the liquid container  430  is worn on the face. The side surface  434  and the side surface  433  may have a form conforming to the side surface of the frame  420 . For example, the side surface  434  and the side surface  433  may have a form conforming to the side surface of the end piece portion  424 . The side surface  433  may have a form conforming to the outer surface  482  of the temple  426 . The side surface  434  may have a form conforming to the inner surface  481  which is a surface opposite to the outer surface  482  in the temple  426 . The side surface  434  and the side surface  433  may be provided in the frame  420  more inner than the corresponding side surface of the frame  420 . The side surface  433  has a form conforming to the outer side surface of the end piece portion  424 , and the side surface  434  may be provided inner than the inner side surface of the end piece portion  424 . 
     The air holes  435  are provided in matrix formation of 2 rows and 5 columns on the side surface  434 . The air hole  435  is an example of the gaseous body transmission member causing a gaseous body to pass from the cavity  432  to the face, when the liquid container  430  is housed in the opening  440  and the frame  420  is mounted on the face. Specifically, the air hole  435  does not cause a liquid to pass from the cavity  432  to the side surface  434 , but cause a gaseous body to pass. In an example, a section form of the air hole  435  parallel to the side surface  434  is circular having a diameter of 1 mm. 
     Accordingly, a liquid is restrained from being leaked from the air hole  435 . For example, a liquid leaking from the air hole  435  is restrained even if the air hole  435  is not covered with water retentive or water absorbing materials such as felt, paper, sea sponge, sponge, water absorptive polymer, and hydrogel, or if the cavity  432  is not covered with a filler material made of water retentive or water absorbing materials. Therefore, it becomes possible to accumulate a liquid inside the liquid container  430  without using any filler material. Consequently, compared to a case in which the entire inside of the liquid container  430  is filled with a filler material, more liquid in quantity can be accumulated. Furthermore, even in a case in which the liquid container  430  is not filled with any filler material, a liquid leak from the air hole  435  can be restrained, thereby enabling to use the glasses hygienically. 
     The liquid container  430  may not have any lid  437 . When the liquid container  430  is housed in the opening  440 , even without the lid  437 , the liquid retained in the cavity  432  can be restrained from leaking outside, if the opening of the cavity  432  can be substantially sealed with the inside of the opening  440 . 
     The sectional form of the insertion opening  438  may be non-circular. For example, as a modification example of the liquid container  430 , the configuration similar to the configuration regarding the liquid container  130  explained with reference to  FIG. 5  can be adopted. 
     A slit linking to the insertion opening  438  may be provided through the lid  437 . For example, as a modification example of the liquid container  430 , the configuration similar to the configuration regarding the liquid container  130  explained with reference to  FIG. 6  can be adopted. 
     A case in which the sectional form of the air hole  435  is circular was explained regarding the liquid container  430 , the liquid container  230 , and the liquid container  330 . In addition, a case in which the plurality of air holes  435  are aligned in a matrix formation was explained. However, the form, number, and positioning of the air holes  435  are not limited as explained above. For example, there may be a single air hole  435 . In other words, there may be one or more air holes  435 . When a plurality of air holes  435  are provided, the plurality of air holes  435  may not be aligned. The form of the air holes  435 , as well as the number and positioning thereof may be determined to cause a gaseous body to pass from the cavity  432  to the side surface  434 , but not to cause a liquid to pass through. 
     The form of the air hole  435  may be determined so as to enable water vapor to pass from the cavity  432  to the inner surface of the frame  420 , but not to cause any pure water or tap water to pass through. The form of the air hole  435  may be the sectional form of the air hole  435 , the size of the section, and the distance for the air hole  435  from the surface towards the cavity  432  to the inner surface of the frame  420 , for example. Water-vapor transmission ratio testing method determined by JIS Z0208 (Cup method) and water-vapor transmission ratio testing method determined by JIS K7129 (Lyssy method) may be used to determine whether water vapor transmits through the air hole  435 , by measuring the amount of water vapor passing through the test piece piece. Determination that water vapor passes through the air hole  435  may be done when the water vapor transmission amount when the test piece is provided with the air hole  435  is more than the water vapor transmission amount when the test piece is not provided with the air hole  435 . 
     Determination on whether pure water or tap water transmits through the air hole  435  may be made by determining whether pure water or tap water passes through the air hole  435  when left still for 10 minutes in the state in which the pressure difference of 9.806 Pa or below is caused between the opening of the air hole  435  towards the cavity  432  and the opening of the air hole  435  towards the inner surface of the frame  420 . Whether pure water or tap water has passed through the air hole  435  can be determined by confirming leakage of water in liquid form by visual observation. Preferably, the pressure difference may be greater than 9.806 Pa and equal to or below 49.03 Pa, and more preferably, the pressure difference may be greater than 49.03 Pa and equal to or below 98.06 Pa. Still more preferably, the pressure difference may be greater than 98.06 Pa and equal to or below 294.18 Pa. 
     When the sectional form of the air hole  435  is circular, the diameter of the air hole  435  may be equal to or above 0.1 mm and equal to or below 1.5 mm, preferably equal to or above 0.3 mm and equal to or below 1.2 mm, and more preferably equal to or above 0.5 mm and equal to or below 1 mm. When the sectional form of the air hole  435  is ellipsoidal, the major axis of the air hole  435  may be equal to or above 0.1 mm and equal to or below 1.7 mm, preferably equal to or above 0.5 mm and equal to or below 1.4 mm, more preferably equal to or above 0.7 mm and equal to or below 1.2 mm. For the air hole  435 , the distance from the surface towards the cavity  432  to the inside surface of the frame  420  may be equal to or above 0.1 mm and equal to or below 1.5 mm, preferably equal to or above 0.3 mm and equal to or below 1.2 mm, more preferably equal to or above 0.5 mm and equal to or below 1 mm. 
     The summation of the volumes of the plurality of air holes  435  may be smaller than the volume of the cavity  432 . Here, when the filler material is provided inside the cavity  432 , the volume of the portion of the inside of the cavity  432  occupied by the filler material is not included in the volume of the cavity  432 . 
     The air hole  435  may be provided above the position corresponding to the water surface when the frame  420  provided with the liquid container  430  is worn on the face. Note that when the size of the air hole  435  is sufficiently small, the air hole  435  may be provided below the position corresponding to the water surface when the frame  420  provided with the liquid container  430  is worn on the face. 
     According to the above-explained configuration, the gaseous body generated by vaporization of the liquid accumulated in the cavity  432  passes through the air hole  435  to be supplied towards the inner side of the frame  420 . In addition, since the air hole  435  does not pass through the liquid accumulated in the cavity  432 , scattering of the liquid onto the face of the wearer can be restrained. 
     In the present embodiment, the air hole  435  is explained to be a gaseous body transmission member. However, the gaseous body transmission member is not limited to this. The gaseous body transmission member may include an organic polymer film or an inorganic porous film causing a gaseous body to permeate but not a liquid. The gaseous body transmission member may include an organic polymer film or an inorganic porous film causing a water vapor to permeate but not pure water or tap water. The gaseous body transmission member may be a silicone rubber. According to this configuration, liquid leak from the air hole  435  can also be restrained. For example, even when the air hole  435  is not covered with water retentive or water absorbing materials, liquid leak from the air hole  435  can be restrained. In this case, more liquid in amount can be accumulated. It is also possible to use the glasses hygienically. 
     An example in which the liquid container  430  is not provided with water retentive or water absorbing materials inside the cavity  432  has been explained. However, the liquid container  430  is not limited to this. Water retentive or water absorbing materials such as felt, paper, sea sponge, sponge, water absorptive polymer, and hydrogel may configure a part of the gaseous body transmission member. There may be water retentive or water absorbing materials provided in the cavity  432 . Accordingly, even when the size of the air hole  435  is large, liquid leak from the cavity  432  can be restrained. Note that in this case, the upper edge of the water retentive or water absorbing materials is preferably above the liquid surface of the liquid accumulated in the cavity. 
     When water retentive or water absorbing materials are provided inside the cavity  432 , the volume of the inside of the cavity  432  occupied by the water retentive or water absorbing materials may be smaller than half the volume of the cavity  432  in the state in which there is no water retentive or water absorbing material provided in the cavity  432 . By doing so, more liquid in amount can be accumulated in the cavity  432 . 
     An example in which the liquid container  430  is open/close from the outer surface of the frame  420 , and the liquid container  430  moves between the position at which the liquid container  430  is housed in the opening  440  and the position at which the liquid container  430  is not housed in the opening  440  was explained as a configuration to open/close the liquid container  430 . However, the direction in which the liquid container  430  is open/close is not limited to this. For example, the liquid container  430  may be open/close from the inner surface. The liquid container  430  may further be open/close from both of the outer surface and the inner surface. 
     An example in which the liquid container  430  is housed in the opening  440  of the frame  420  was explained as a configuration to house the liquid container  430 . However, the housing that houses therein the liquid container  430  is not limited to this. For example, the liquid container  430  may be housed in the concave portion formed for the frame  420 . For example, the concave portion may be formed on the inner surface or the outer surface of the frame  420 , to house the liquid container  430  in the concave portion. For example, the concave portion housing the liquid container  430  may be provided on the inner surface of the frame  420 . In this case, the liquid container  430  may be open/close from the inner surface of the frame  420 . The concave portion housing therein the liquid container  430  may be formed on the outer surface of the frame  420 . In this case, the liquid container  430  may be open/close from the outer surface of the frame  420 . 
     An example in which the housing that houses the liquid container  430  is provided in the end piece portion  424  in the liquid container  430  was explained. However, the position of the housing is not limited to this. The housing may be formed in the temple. 
     An example in which the spindle supporting movably the liquid container  430  with respect to the frame  420  is also used as the spindle supporting movably the temple  426  with respect to the end piece portion  424  in the liquid container  430  was explained. However, the mechanism for supporting the liquid container  430  movably to the frame  420  is not limited to this. The liquid container  430  may be supported movably to the frame  420  by the spindle different from the spindle movably supporting the temple  426  with respect to the end piece portion  424 . For example, the frame  420  may include a hinge for movably supporting the liquid container  430  to the frame  420  and a hinge for movably supporting the temple  426  to the end piece portion  424 . In addition, the liquid container  430  may be supported movably with respect to the frame  420  by means of a displacement mechanism other than the hinge mechanism. 
     In the above-described embodiment, the container main body  131  and the container main body  431  may be an elastic member formed by an elastic material such as an elastic resin. For example, the container main body  131  and the container main body  431  are formed by polyamide resin. Specifically, the container main body  131  and the container main body  431  may be formed by grilamid (registered trademark) TR-90. The container main body  131  and the container main body  431  may be a hard member formed by a hard material such as a hard resin. The lid  137  may be formed by a material that is the same as the material forming the container main body  131 . The lid  437  may be formed by a material that is the same as the material forming the container main body  431 . 
       FIG. 12  through  FIG. 15  schematically show a frame  720  and a liquid container  730  according to another embodiment of the glasses  100 .  FIG. 12  through  FIG. 15  mainly show the area including the left-eye side portion of the glasses. The frame  720  corresponds to the frame  420 , and the liquid container  730  corresponds to the liquid container  430 . The container main body  731  of the liquid container  730  corresponds to the container main body  431  of the liquid container  430 . The lid  737  of the liquid container  730  corresponds to the lid  437  of the liquid container  430 . 
     The frame  720  includes a liquid container  730  different from the liquid container  430  of the frame  420 . For example, the lid  737  of the liquid container  730  is different from the lid  437  of the frame  420 . At least in this point, the frame  720  is different from the frame  420 . The other constituting elements of the frame  720  may have a configuration similar to that of the corresponding constituting elements of the frame  420 . 
     Among the configurations related to the frame  720  and the liquid container  730 , the configurations different from those related to the frame  420  and the liquid container  430  described above are mainly explained below, and occasionally the configurations similar to the configurations of the frame  420  and the liquid container  430  may be omitted below. 
       FIG. 12  schematically shows a state in which the liquid container  730  is not housed in the frame  720 .  FIG. 12  schematically shows a folded state of the frame  720 .  FIG. 13  schematically shows a state in which the liquid container  730  is removed from the frame  720 .  FIG. 14  and  FIG. 15  shows perspective views of the lid  737 . 
     The liquid container  730  is an example of a liquid retainer for retaining a liquid. The opening  740  is formed on a part of the frame  720 , and at least a part of the liquid container  730  may be housed in the opening  740 . The opening  740  is an example of a housing in which at least a part of the liquid container  730  is housed. Just as the liquid container  430 , the liquid container  730  is supported by the frame  720  via a hinge, to be movable between a position in which the liquid container  730  is housed in the opening  740  and the liquid container  730  is not housed in the opening  740 . 
     In the liquid container  730 , a plurality of air holes  735  are formed corresponding to the air holes  435 , on the side surface  734  that would oppose to the face when the frame  720  is worn on the face of a wearer and the liquid container  730  is housed in the opening  740 . The air holes  735  penetrate up to the cavity in the container main body  731 , and permit gaseous body to pass but do not permit a liquid to pass. The liquid retained in the liquid container  730  is vaporized to go to the face of the wearer via the air holes  735 . 
     The frame  720  includes a rim  722  corresponding to the rim  422 , a bridge  723  corresponding to the bridge  423 , an end piece portion  724  corresponding to the end piece portion  424 , a hinge spindle member  750  corresponding to the hinge spindle member  450 , and a temple  726  corresponding to the temple  426 . The frame  720  includes a nose pad similar to the nose pad of the frame  420 . The frame  720  further includes an ear band similar to the ear band of the frame  420 . The bridge  723  is positioned between a pair of rims  722 . 
     The rim  722  includes a hood member elongating in the direction of a wearer from around the lens. Accordingly, the gaseous body vaporized from the liquid container  730  is restrained from dispersing. The end piece portion  724  is provided at the edge of the rim  722 , and is coupled with the temple  726  via the hinge spindle member  750 . The pair of temples  726  sandwich the head of the wearer. 
     The liquid container  730  includes a container main body  731  and a lid  737 . Just as the container main body  431 , the container main body  731  may be an elastic member formed by an elastic material such as an elastic resin. For example, the container main body  731  is formed by polyamide resin. Specifically, the container main body  731  may be formed by grilamid (registered trademark) TR-90. The container main body  731  may be a hard member formed by a hard material such as a hard resin. 
     A cavity for retaining a liquid is formed inside the liquid container  730 , the cavity corresponding to the cavity  432  of the liquid container  430 . In the present embodiment, “cavity of the liquid container  730 ” means a cavity corresponding to the cavity  432  of the liquid container  430 . Just as the cavity  432  of the liquid container  430 , the cavity of the liquid container  730  can accumulate a liquid. An example of the liquid retained in the cavity of the liquid container  730  is water. The inside of the cavity of the liquid container  730  may be processed to be water repellent. The inside of the cavity of the liquid container  730  may be antimicrobial-impregnated. 
     Just as in the case of the liquid container  430 , an opening for supplying a liquid to the cavity of the liquid container  730  is formed through the liquid container  730 , in the state in which the liquid container  730  is not housed in the opening  740 . The opening is formed in a position facing the inner surface of the opening  740  when the liquid container  730  is housed in the opening  740 . Specifically, the opening is formed on the upper portion of the liquid container  730 . Note that this opening is occasionally referred to as “upper opening” of the liquid container  730 . 
     The lid  737  seals the upper opening of the liquid container  730 . An insertion opening  738  is formed through the lid  737 . The insertion opening  738  is an example of a liquid supply port penetrating from outside to the cavity of the liquid container  730 . A liquid injection tool such as a dropper can be inserted through the insertion opening  738 . The liquid injection tool can be inserted through the insertion opening  738  when the liquid container  730  is not housed in the opening  740 , to supply a liquid from the liquid injection tool to the cavity of the liquid container  730 . 
     The lid  737  may be formed by a material having rubber elasticity. The lid  737  may be formed by elastomer such as rubber, for example. The material of the lid  737  may be crude rubber, synthetic rubber, silicone rubber, or the like. When the liquid container  730  is housed in the opening  740  of the frame  720 , the lid  737  provided between the inner surface of the opening  740  and the liquid container  730  will press them, to make it hard to remove the liquid container  730  from the opening  740 . In addition, since the inner surface of the opening  740  and the upper surface  800  of the lid  737  are in close contact to each other, the liquid contained in the cavity of the liquid container  730  can be restrained from leaking outside of the liquid container  730  from the gap of the lid  737 . 
     The lid  737  may be provided to be removable with respect to upper opening of the liquid container  730 . A user can remove the lid  737  from the upper opening of the liquid container  730  when the liquid container  730  is not housed in the opening  740 . Because the lid  737  can be removed to expose the upper opening of the liquid container  730 , a liquid can be supplied through the exposed opening to the cavity of the liquid container  730  without using any liquid injection tool. In addition, the liquid retained in the cavity of the liquid container  730  can be discharged to outside from the cavity of the liquid container  730 , via the exposed upper opening. Therefore, the liquid retained in the cavity of the liquid container  730  can be easily exchanged. 
     The liquid container  730  is linked to the frame  720  by means of the hinge spindle member  750 . Specifically, the liquid container  730  is linked to the end piece portion  724  by means of the hinge spindle member  750 . More specifically, the liquid container  730  is supported to be movable with respect to the end piece portion  724 , by means of the hinge spindle member  750 . The container main body  731  of the liquid container  730  includes an insertion member  736  to which the hinge spindle member  750  is inserted. The hinge spindle member  750  is inserted to the insertion opening  774  of the insertion member  736  of the liquid container  730 . The insertion member  736  corresponds to the insertion member  436 , and the insertion opening  774  corresponds to the insertion opening  474 . 
     The insertion opening  774  retains the hinge spindle member  750  to be rotatable. The insertion member  736  includes a slit portion  710  along the rotation axis of the hinge spindle member  750 . The slit portion  710  provides a link portion linking between the insertion opening  774  and the outside of the insertion member  736 . On the sectional surface orthogonal to the rotation axis of the hinge spindle member  750 , the inner periphery of the insertion opening  774  is distanced by a portion provided with the slit portion  710 . 
     On the sectional surface orthogonal to the rotation axis of the hinge spindle member  750 , the diameter of the insertion opening  774  is larger than the diameter of the hinge spindle member  750 . On the sectional surface orthogonal to the rotation axis of the hinge spindle member  750 , the width of the slit portion  710  is smaller than the diameter of the hinge spindle member  750 . 
     When removing the liquid container  730  from the frame  720 , in the state in which the liquid container  730  is mounted to the frame  720 , when the hinge spindle member  750  in the insertion opening  774  exerts force in the direction towards the slit portion  710 , onto the liquid container  730 , when the liquid container  730  is open, the slit portion  710  is pressed by the hinge spindle member  750  to be elastically pressed and extended. The hinge spindle member  750  goes through the extended slit portion  710 , to be removed from the insertion member  736 . When the hinge spindle member  750  is removed from the insertion member  736 , the slit portion  710  returns elastically to its original position. 
     When mounting the liquid container  730  to the frame  720  from the state in which the liquid container  730  is removed from the frame  720 , the slit portion  710  is caused to abut against the hinge spindle member  750 , and as a result of the hinge spindle member  750  applying a force in the direction towards the insertion opening  774 , on the liquid container  730 , the slit portion  710  is pressed by the hinge spindle member  750  to be elastically extended. The hinge spindle member  750  goes through the extended slit portion  710 , to be inserted in the insertion opening  774 . Then, when the hinge spindle member  750  has been in the insertion opening  774 , the slit portion  710  elastically returns to its original position. Accordingly, the hinge spindle member  750  fits the insertion opening  774  to be rotatable. 
     When the liquid container  730  is mounted to the frame  720 , the liquid container  730  rotates around the hinge spindle member  750 , while inner periphery of the insertion opening  774  is in contact with the outer surface of the hinge spindle member  750 , in the state in which the hinge spindle member  750  fits the insertion opening  774  to be rotatable. Therefore, to open/close the liquid container  730 , the hinge spindle member  750  is not easily removed from the slit portion  710 , to facilitate smooth opening/closing. 
     In this way, the liquid container  730  is removably mounted to the frame  720 . For this reason, the liquid container  730  can be exchanged with a new liquid container. In addition, after the liquid container  730  is removed from the frame  720  and cleaned, the liquid container  730  can be mounted to the frame  720  again. Therefore, the glasses can be used hygienically. 
     An insertion member is formed on the rim  722 , through which the hinge spindle member  750  is inserted. Since the insertion member of the rim  722  corresponds to the insertion member  460  of the rim  422 , and has a configuration similar to that of the insertion member  460 , the explanation of the details of the insertion member of the rim  722  will be omitted below. An insertion member is provided to the temple  726 , through which the hinge spindle member  750  is inserted. The insertion member of the temple  726  corresponds to the insertion member  470  of the temple  426 , and has a configuration similar to that of the insertion member  470 , and so explanation of the details of the insertion member of the temple  726  is omitted below. In addition, since the hinge spindle member  750  has a shaft member similar to the shaft member  452  of the hinge spindle member  450  and a shaft member similar to the shaft member  454  of the hinge spindle member  450 , and so explanation of the details of the hinge spindle member  750  will be omitted below. 
     The hinge spindle member  750  and the insertion member  736  provide a hinge mechanism supporting the liquid container  730  with respect to the frame  720  movably. This hinge mechanism supports, to be movable, the liquid container  730  both to the end piece portion  724  and the temple  726 . Specifically, the liquid container  730  rotates independently around the hinge spindle member  750 , with respect to the temple  726  and the end piece portion  724 . Therefore, the liquid container  730  can rotate around the hinge spindle member  750  and can move between a position housed in the opening  740  and a position not housed in the opening  740 . In this way, the hinge mechanism supports the liquid container  730  to the frame  720  to be movable between the position at which the liquid container  730  is housed in the opening  740  and the position at which the liquid container  730  is not housed in the opening  740 . For this reason, the liquid container  730  can be supported to the frame in a manner in which the liquid to be retained in the liquid container  730  can be injected and exchanged easily. In addition, the liquid container  730  is hard to remove from the frame  720 , which reduces a possibility of losing the liquid container  730 . 
     The hinge spindle member  750  and the insertion member of the temple  726  provide a hinge mechanism supporting the temple  726  to the end piece portion  724  movably. This hinge mechanism enables the temple  726  to be supported movably by the end piece portion  724  between the state in which the temple  726  is folded with respect to the end piece portion  724  and the state in which the temple  726  is not folded with respect to the end piece portion  724  as illustrated in  FIG. 12  and  FIG. 13 . 
     In this way, the opening  740  is formed on the end piece portion  724  of the frame  720 , and the temple  726  is supported movably with respect to the end piece portion  724 , via the hinge. The liquid container  730  and the temple  726  are rotatably supported by the hinge around the common hinge spindle member  750 . Consequently, the spindle of the hinge can be shared, to be able to reduce the number of parts compared to the case in which the spindle of the hinge is not shared. It is possible to make a smaller hinge mechanism compared to the case in which the spindle of the hinge is not shared, as well as maintaining a space retaining the liquid wider. 
     The above-explained hinge mechanism enables the liquid container  730  and the temple  726  to independently rotate around the hinge spindle member  750 . For example, it is possible to fold the temple  726  with respect to the end piece portion  724 , while the liquid container  730  is housed in the opening  740 . Even by folding the temple  726  with respect to the end piece portion  724 , the liquid container  730  does not move easily with respect to the end piece portion  724 . By rotating the liquid container  730  around the hinge spindle member  750  while the temple  726  is folded with respect to the end piece portion  724 , it is possible to remove out the liquid container  730  from the opening  740 . 
     When the liquid container  730  is housed in the opening  740 , the liquid container  730  has a side surface  734  and a side surface  733  provided outside and opposite to the side surface  734 , where the side surface  734  will be provided to face the face when the frame  720  provided with the liquid container  730  is worn on the face. The side surface  734  corresponds to the side surface  434  of the liquid container  430 , and has a configuration similar to that of the side surface  434 . The side surface  733  corresponds to the side surface  433  of the liquid container  430 , and has a configuration similar to that of the side surface  433 . Therefore, explanation of the details of the side surface  733  and the side surface  734  of the liquid container  730  is omitted below. 
     The air holes  735  are provided in matrix formation on the side surface  734 . For example, the air holes  735  are provided in a matrix formation of 2 rows and 7 columns on the side surface  734 . The air hole  735  is an example of the gaseous body transmission member causing a gaseous body to pass from the cavity of the liquid container  730  to the face, when the liquid container  730  is housed in the opening  740  and the frame  720  is mounted on the face. Specifically, the air hole  735  does not cause a liquid to pass from the cavity of the liquid container  730  to the side surface  734 , but cause a gaseous body to pass. In an example, a section form of the air hole  735  parallel to the side surface  734  is circular having a diameter of 1 mm. 
     Accordingly, a liquid is restrained from being leaked from the air hole  735 . For example, a liquid leaking from the air hole  735  is restrained even if the air hole  735  is not covered with water retentive or water absorbing materials such as felt, paper, sea sponge, sponge, water absorptive polymer, and hydrogel, or if the cavity of the liquid container  730  is not covered with a filler material made of water retentive or water absorbing materials. Therefore, it becomes possible to accumulate a liquid inside the liquid container  730  without using any filler material. Consequently, compared to a case in which the entire inside of the liquid container  730  is filled with a filler material, more liquid in quantity can be accumulated. Furthermore, even in a case in which the liquid container  730  is not filled with any filler material, a liquid leak from the air hole  735  can be restrained, thereby enabling to use the glasses hygienically. 
     The configuration regarding the lid  737  is explained below. The lid  737  includes an upper surface  800 , a lower surface  840 , a first side portion  881 , and a second side portion  882 . The lower surface  840  is a surface opposite to the upper surface  800 . A part of the lower surface  840  defines a part of the cavity of the liquid container  730 . 
     The first side portion  881  and the second side portion  882  define a part of the outer periphery of the lid  737 . The first side portion  881  is a portion to face the face when the liquid container  730  is housed in the opening  740  and the frame  720  is mounted on the face of a wearer. The first side portion  881  includes a surface along the side surface  734 . The second side portion  882  is a portion opposite to the first side portion  881 . 
     A concave portion  804  is formed on the upper surface  800  of the lid  737 . The concave portion  804  includes a side surface portion  802  and a bottom portion  803 . 
     The insertion opening  738  is formed on the concave portion  804 . Specifically, the insertion opening  738  penetrates from the bottom portion  803  of the concave portion  804  to the lower surface  840 . 
     The insertion opening  738  includes a first opening  810  and a second opening  820 . The first opening  810  is formed on the bottom portion  803  of the concave portion  804 . The second opening  820  is formed on the lower surface  840 , and links to the first opening  810 . The center of the first opening  810  substantially matches the center of the second opening  820 . 
     The section size of the second opening  820  is smaller than the section size of the first opening  810 . Specifically, the section area of the second opening  820  is smaller than the section area of the first opening  810 . 
     The first opening  810  has a circular form. The second opening  820  has a circular form. The diameter of the section of the second opening  820  is smaller than the diameter of the section of the first opening  810 . For example, the diameter of the section of the first opening  810  is 2.8 mm, and the diameter of the section of the second opening  820  is 1.5 mm. 
     The following takes an example in which the sectional form of the first opening  810  is a circle, to explain the range of the size of the section of the first opening  810 . The diameter of the section of the first opening  810  is preferably equal to or above 2 mm and equal to or below 7 mm. The diameter of the section of the first opening  810  is more preferably equal to or above 2 mm and equal to or below 4 mm. 
     The following takes an example in which the sectional form of the second opening  820  is a circle, to explain the range of the size of the section of the second opening  820 . The diameter of the section of the second opening  820  is preferably equal to or below 2.5 mm. The diameter of the section of the second opening  820  is more preferably equal to or below 2 mm. The diameter of the section of the second opening  820  may be equal to or below 1.5 mm. 
     Note that the section form of at least one opening from the first opening  810  and the second opening  820  may be non-circular. Even when the section form of the opening is non-circular, the area of the section of the opening preferably falls in the range of the area defined by the above-explained range of the diameter. 
     In this way, since the section of the first opening  810  is larger than the section of the second opening  820 , it is easy to supply a liquid to a cavity of the liquid container  730  from the insertion opening  738 , using a liquid injection tool or the like. Since the section of the second opening  820  is smaller than the section of the first opening  810 , when a liquid is retained in the cavity of the liquid container  730 , leakage of the liquid retained in the cavity of the liquid container  730  through the insertion opening  738  to outside the liquid container  730  is restrained. For example, when the liquid in the cavity of the liquid container  730  is flown out due to the liquid container  730  being shaken or the like, the liquid leakage thorough the insertion opening  738  to outside the liquid container  730  can be restrained. In addition, even when the liquid container  730  is tilted, the liquid in the cavity of the liquid container  730  is restrained from leaking through the insertion opening  738  to outside of the liquid container  730 . In addition, even when the degree of adhesion between the upper surface  800  and the opening  740  becomes lower, the liquid in the cavity of the liquid container  730  is restrained from leaking through the insertion opening  738  to outside of the liquid container  730 . In addition, since the section of the first opening  810  is larger than the section of the second opening  820 , even when an object such as cloth, hair, or the like has contacted the vicinity of the first opening  810 , the liquid retained in the cavity of the liquid container  730  is restrained from being absorbed by the object. 
     The concave portion  804  of the upper surface  800  elongates up to the first side portion  881 . For this reason, the boundary between the first side portion  881  and the upper surface  800  has a step-wise formation conforming to the form of the concave portion  804 . For this reason, the first side portion  881  includes an opening linking to the insertion opening  738 , in the section along the side surface  734  of the liquid container  730 . In this way, the first side portion  881  includes an opening linking to the concave portion  804 . Therefore, even when the liquid container  730  is housed in the opening  740  and the upper surface  800  of the lid  737  is in close contact with the frame  720 , the cavity of the liquid container  730  links to the outside of the liquid container  730  via the insertion opening  738 . For this reason, the fluidity of air between the cavity of the liquid container  730  and the outside of the liquid container  730  is enhanced, thereby increasing the vaporization amount of the liquid retained in the cavity of the liquid container  730 . 
     The height from the bottom portion  803  to the side surface portion  802  is 0.3 mm. Therefore, the concave portion  804  has a depth of 0.3 mm. Note that the height of the side surface portion  802  is preferably equal to or above 0.1 mm and equal to or below 1 mm. More preferably, the height of the side surface portion  802  is equal to or above 0.2 mm and equal to or below 0.5 mm. 
     As described above, the concave portion  804  of the upper surface  800  is formed to elongate up to the first side portion  881 , but not up to the second side portion  882 . For this reason, the leaking of the liquid retained in the cavity of the liquid container  730  is restrained from being vaporized to exit to outside from the side not opposing the wearer of the frame  720  by passing through the insertion opening  738 . 
     As described above, the size of the section of the second opening  820  of the lid  737  is smaller than the size of the section of the first opening  810 . However, the size of the section of the first opening  810  may be smaller than the size of the section of the second opening  820 . 
     The following explains an example of respective depths of the first opening  810  and the second opening  820  when the thickness of the lid  737  from the lower surface  840  to the upper surface  800  is 3.4 mm. The boundary surface between the second opening  820  and the first opening  810  may be at the position corresponding to 1.5 mm from the lower surface  840 . That is, the depth of the second opening  820  may be 1.5 mm. In addition, the boundary surface between the first opening  810  and the bottom portion  803  may be at the position corresponding to 2.9 mm from the lower surface  840 . That is, the depth of the first opening  810  may be 1.4 mm. 
     Note that, regardless of the thickness of the lid  737  from the lower surface  840  to the upper surface  800 , the value of the ratio D 1 /d 1  between the depth d 1  of the first opening  810  and the diameter D 1  of the section of the first opening  810  may preferably be equal to or above 1.6 and equal to or below 2.4. The value of the ratio D 1 /d 1  may more preferably be equal to or above 1.8 and equal to or below 2.2. In addition, the value of the ratio D 2 /d 2  between the depth d 2  of the second opening  820  and the diameter D 2  of the section of the second opening  820  may preferably be equal to or above 0.8 and equal to or below 1.2. The value of the ratio D 2 /d 2  may more preferably be equal to or above 0.9 and equal to or below 1.1. 
     In the embodiment described above, when the frame  120 , the frame  420 , and the frame  720  are collectively referred to as “frame,” the liquid container  130 , the liquid container  430 , and the liquid container  730  are collectively referred to as “liquid container,” the air hole  135 , the air hole  435 , and the air hole  735  are collectively referred to as “air hole,” the cavity  132 , the cavity  432 , and the cavity of the liquid container  730  are collectively referred to as “cavity,” and the side surface  134 , the side surface  434 , and the side surface  734  are collectively referred to as “inner side surface,” the air hole penetrates from the cavity to the inner side surface as described above. In addition, the plurality of air holes are aligned in a matrix formation. In addition, a case in which the section of the air hole is circular was mainly explained. However, the form of the air hole, the number and the position thereof are not limited to them. For example, there may be a single air hole. That is, one or more air holes may be provided. When the plurality of air holes are provided, the plurality of air holes may be aligned. The form of the air hole(s), the number and the position thereof may be determined so as to transmit gaseous body from the cavity to the inner side surface, but not to transmit any liquid. 
     The form of the air hole may be determined so as to enable water vapor to pass from the cavity to the inner surface of the frame, but not to cause any pure water or tap water to pass through. The form of the air hole(s) may be the sectional form of the air hole, the size of the section, and the distance for the air hole from the surface towards the cavity to the inner surface of the frame, for example. Water-vapor transmission ratio testing method determined by JIS Z0208 (Cup method) and water-vapor transmission ratio testing method determined by JIS K7129 (Lyssy method) may be used to determine whether water vapor transmits through the air hole, by measuring the amount of water vapor passing through the test piece. Determination that water vapor passes through the air hole may be done when the water vapor transmission amount when the test piece is provided with the air hole is more than the water vapor transmission amount when the test piece is not provided with the air hole. 
     Determination on whether pure water or tap water transmits through the air hole may be made by determining whether pure water or tap water passes through the air hole when left still for 10 minutes in the state in which the pressure difference of 9.806 Pa or below is caused between the opening of the air hole towards the cavity and the opening of the air hole towards the inner surface of the frame. Whether pure water or tap water has passed through the air hole can be determined by confirming leakage of water in liquid form by visual observation. Preferably, the pressure difference may be greater than 9.806 Pa and equal to or below 49.03 Pa, and more preferably, the pressure difference may be greater than 49.03 Pa and equal to or below 98.06 Pa. Still more preferably, the pressure difference may be greater than 98.06 Pa and equal to or below 294.18 Pa. 
     When the sectional form of the air hole is circular, the diameter of the air hole may be equal to or above 0.1 mm and equal to or below 1.5 mm, preferably equal to or above 0.3 mm and equal to or below 1.2 mm, and more preferably equal to or above 0.5 mm and equal to or below 1 mm. When the sectional form of the air hole is ellipsoidal, the major axis of the air hole may be equal to or above 0.1 mm and equal to or below 1.7 mm, preferably equal to or above 0.5 mm and equal to or below 1.4 mm, more preferably equal to or above 0.7 mm and equal to or below 1.2 mm. The distance from the surface towards the cavity to the inner side surface of the frame, for the air hole, may be equal to or above 0.1 mm and equal to or below 1.5 mm, preferably equal to or above 0.3 mm and equal to or below 1.2 mm, more preferably equal to or above 0.5 mm and equal to or below 1 mm. 
     The summation of the volumes of the plurality of air holes may be smaller than the volume of the cavity. Here, when the filler material is provided inside the cavity, the volume of the portion of the inside of the cavity occupied by the filler material is not included in the volume of the cavity. 
     The air hole may be provided above the position corresponding to the water surface when the frame provided with the liquid container is worn on the face. Note that when the size of the air hole is sufficiently small, the air hole may be provided below the position corresponding to the water surface when the frame provided with the liquid container is worn on the face. 
     According to the above-explained configuration, the gaseous body generated by vaporization of the liquid accumulated in the cavity passes through the air hole to be supplied towards the inner side of the frame. In addition, since the air hole does not pass through the liquid accumulated in the cavity, scattering of the liquid onto the face of the wearer can be restrained. 
     In the embodiment described above, the air hole is explained to be a gaseous body transmission member. However, the gaseous body transmission member is not limited to this. The gaseous body transmission member may include an organic polymer film or an inorganic porous film causing a gaseous body to permeate but not a liquid. The gaseous body transmission member may include an organic polymer film or an inorganic porous film causing a water vapor to permeate but not pure water or tap water. The gaseous body transmission member may be a silicone rubber. According to this configuration, liquid leak from the air hole can also be restrained. For example, even when the air hole is not covered with water retentive or water absorbing materials, liquid leak from the air hole can be restrained. In this case, more liquid in amount can be accumulated. It is also possible to use the glasses hygienically. 
     An example in which the liquid container is not provided with water retentive or water absorbing materials inside the cavity has been explained. However, the liquid container is not limited to this. Water retentive or water absorbing materials such as felt, paper, sea sponge, sponge, water absorptive polymer, and hydrogel may configure a part of the gaseous body transmission member. There may be water retentive or water absorbing materials provided in the cavity. Accordingly, even when the size of the air hole is large, liquid leak from the cavity can be restrained. Note that in this case, the upper edge of the water retentive or water absorbing materials is preferably above the liquid surface of the liquid accumulated in the cavity. 
     When water retentive or water absorbing materials are provided inside the cavity, the volume of the inside of the cavity occupied by the water retentive or water absorbing materials may be smaller than half the volume of the cavity in the state in which there is no water retentive or water absorbing material provided in the cavity. By doing so, more liquid in amount can be accumulated in the cavity. 
     An example in which the liquid container is open/close from the outer surface of the frame, and the liquid container moves between the position at which the liquid container is housed in the opening and the position at which the liquid container is not housed in the opening was explained as a configuration to open/close the liquid container. However, the direction in which the liquid container is open/close is not limited to this. For example, the liquid container may be open/close from the inner surface of the frame. The liquid container may further be open/close from both of the outer surface of the frame and the inner surface of the frame. 
     An example in which the liquid container is housed in the opening of the frame was explained as a configuration in which the liquid container is housed. However, the housing that houses therein the liquid container may not be limited to this. For example, the liquid container may be housed in the concave portion formed for the frame. For example, the concave portion may be formed on the inner surface or the outer surface the frame, to house the liquid container in the concave portion. For example, the concave portion housing the liquid container may be provided on the inner surface of the frame. In this case, the liquid container may be open/close from the inner surface of the frame. The concave portion housing therein the liquid container may be formed on the outer surface of the frame. In this case, the liquid container may be open/close from the outer surface of the frame. 
     When the end piece portion  124 , end piece portion  424 , and the end piece portion  724  are collectively referred to as “end piece portion,” and the temple  126 , the temple  426 , and the temple  726  are collectively referred to as “temple” in the above-described embodiments, the housing for housing the liquid container is provided in the end piece portion of the liquid container. However, the position of the housing is not limited to this. The housing may be formed on the temple. 
     In addition, for the liquid container  430  and the liquid container  730 , a case was explained in which the spindle movably supporting the liquid container to the frame is also used as the spindle movably supporting the temple to the end piece portion. However, the mechanism for movably supporting the liquid container to the frame is not limited to this. The liquid container may be movably supported to the frame by means of a spindle different from the spindle movably supporting the temple to the end piece portion. For example, the frame may include a hinge to movably support the liquid container to the frame and a hinge to movably support the temple to the end piece portion. In addition, the liquid container may be supported movably with respect to the frame by means of a displacement mechanism other than the hinge mechanism. 
     In the above-explained embodiments, the eyewear was glasses. The glasses may further be used for such purposes as to correct the refractive error of the eyes of a wearer, protect the eyes of a wearer, or may be worn simply as a fashion item. However, the eyewear is not limited to glasses. The eyewear may be an equipment related to eyes, and may be face mounted equipment or head mounted equipment such as glasses, sunglasses, goggles, head mount displays, or the like. The eyewear may be a frame of the face mounted equipment or the head mounted equipment, or a part of the frame. Optical components used for eyewear may be optical components having optical characteristics matching the usage of the eyewear, not limited to the lens characteristic. 
     While the embodiments of the present invention have been described, the technical scope of the invention is not limited to the above described embodiments. It is apparent to persons skilled in the art that various alterations and improvements can be added to the above-described embodiments. It is also apparent from the scope of the claims that the embodiments added with such alterations or improvements can be included in the technical scope of the invention. 
     The operations, procedures, steps, and stages of each process performed by an apparatus, system, program, and method shown in the claims, embodiments, or diagrams can be performed in any order as long as the order is not indicated by “prior to,” “before,” or the like and as long as the output from a previous process is not used in a later process. Even if the process flow is described using phrases such as “first” or “next” in the claims, embodiments, or diagrams, it does not necessarily mean that the process must be performed in this order. 
     EXPLANATION OF REFERENCE NUMERALS 
     
         
           100  glasses 
           110  lens 
           120  frame 
           121  nose pad 
           122  rim 
           123  bridge 
           124  end piece portion 
           126  temple 
           128  ear band 
           130  liquid container 
           131  container main body 
           132  cavity 
           133  side surface 
           134  side surface 
           136  insertion member 
           135  air hole 
           137  lid 
           138  insertion opening 
           139  slit 
           140  opening 
           150  hinge spindle member 
           152  shaft member 
           154  shaft member 
           160  insertion member 
           162  insertion opening 
           170  insertion member 
           172  insertion opening 
           174  insertion opening 
           181  inner surface 
           182  outer surface 
           184  end-piece-portion-side side surface 
           186  temple-side side surface 
           230  liquid container 
           238  insertion opening 
           330  liquid container 
           420  frame 
           422  rim 
           423  bridge 
           424  end piece portion 
           426  temple 
           430  liquid container 
           431  container main body 
           432  cavity 
           433  side surface 
           434  side surface 
           435  air hole 
           436  link portion 
           437  lid 
           438  insertion opening 
           440  opening 
           450  hinge spindle member 
           452  shaft member 
           454  shaft member 
           460  insertion member 
           462  insertion opening 
           470  insertion member 
           472  insertion opening 
           474  insertion opening 
           481  inner surface 
           482  outer surface 
           484  end-piece-portion-side side surface 
           486  temple-side side surface 
           510  slit portion 
           710  slit portion 
           720  frame 
           722  rim 
           723  bridge 
           724  end piece portion 
           726  temple 
           730  liquid container 
           731  container main body 
           734  side surface 
           735  air hole 
           736  insertion member 
           737  lid 
           738  insertion opening 
           740  opening 
           750  hinge spindle member 
           774  insertion opening 
           800  upper surface 
           802  side surface portion 
           803  bottom portion 
           804  concave portion 
           810  first opening 
           820  second opening 
           840  lower surface 
           881  first side portion 
           882  second side portion