Patent Publication Number: US-2016238186-A1

Title: Insulation structure comprising insulation units and manufacturing method therefor

Description:
TECHNICAL FIELD 
     The present invention is related to providing an insulation structure comprising insulation units and a manufacturing method there for, and particularly, to providing an insulation structure applying to various fields and improving the insulation property and manufacturing method there for. 
     BACKGROUND ART 
     In a construction field, etc. there has been made various studies in order to increase the insulation efficiency. For one example, as shown in  FIG. 1 , Korean Patent Laid-Open Publication No. 2011-82099 discloses that a heat reflective multi-story panel  100  comprises a pair of heat reflective plates  20  and  20   a  disposing heat reflective materials  23  to face each other on one sides of each of surface materials  21  and  21   a  and a spacer  30  inserted between the heat reflective plates  20  and  20   a  to form an air layer. 
     Also, as shown in  FIG. 2 , Korean Patent Laid-Open Publications No. 2013-19786 discloses that an insulation structure comprises a first insulation panel  110  and a second insulation panel  120  each including a first radiant heat reflective sheet  141  and a second radiant heat reflective sheet  142  disposed on each one side thereof to face each other and an intermediate panel  130  each forming grooves  131  and  132  in a certain pattern between the radiant heat reflective sheets  141  and  142 . 
     As described above, the general insulation structures have disadvantages in that since the heat reflective plate and the radiant heat reflective sheet are easily exposed to a pollution source due to the open air, the heat reflective efficiency is decreased as time passes after installation. Due to it, the insulation durability drops. Also, it has structural defects in that due to a larger volume and greater size, the insulation structure is difficult to handle, used only for the building insulation and has limitations to the use compatible with home appliances and industrial plants such as special clothes, automobiles, refrigerators, etc. that need the insulation or keeping warmth except for the building insulation. 
     Technology Problem 
     In consideration of these and those problems, an object of the present invention is to provide an insulation structure comprising a plurality of insulation units of a sphere or hemisphere type, on at least the inner circumference of which a heat reflective film is coated. 
     Other object of the present invention is to provide an insulation structure comprising an insulation unit of a sphere or hemisphere, on an inner circumferential surface of which a heat reflective film is coated to reflect heat rays in a scattered manner in a space portion thereof, thereby catching and capturing the heat rays in the space, efficiently. 
     Another object of the present invention is to provide an insulation structure enabling the compatible use in various fields such as home appliances, industrial plants, constructions, etc. covering clothes, automobiles or vehicles, refrigerators, etc. and the simple adaptation and installation. 
     Another object of the present invention is to provide an insulation structure comprising a plurality of insulation units of a sphere or hemisphere type including a heat reflective film formed on the inner circumference thereof with being closed to basically prevent the contact with a pollutant, thereby preventing the degradation of the heat reflection and insulation efficiency for a long time. 
     Another object of the present invention is to provide an insulation structure comprising insulation units of a sphere or hemisphere type unintentionally stacked in multi-stories within a predetermined thickness region, so that an area of a heat reflective film is significantly increased compared with a conventional configuration of a sheet type. 
     Another object of the present invention is to provide an insulation structure comprising insulation units of a sphere or hemisphere type unintentionally filled up within a predetermined thickness region, so that spaces between the insulation units of a sphere or hemisphere type function as a ventilation passage of the open air, thereby removing the requirement of a separate ventilator. 
     Another object of the present invention is to provide an insulation structure comprising an insulation unit of a sphere type, on the outer circumference of which a heat reflective film is coated, and a mold provided with a space to fill up a plurality of insulation units therein. 
     Another object of the present invention is to provide an insulation structure for maximizing an area of a heat reflective film with insulation units of a sphere type being unintentionally filled in a mold including spaces and making the spaces between the insulation units served as the open air passage by itself, so that it is not necessary to install a separate ventilator, even though the open air passage is not provided in the mold. 
     Another object of the present invention is to provide an insulation structure comprising spaces rugged formed there between to function as the open air passage by itself. 
     Another object of the present invention is to provide a manufacturing method of an insulation structure comprising steps of forming a closed space of a hemisphere type on a basic material of a flat plate shape, coating a heat reflective film on the inner circumference of the closed space of a hemisphere type and then joining a transparent sheet to one side of a basic material to isolate the closed space of a hemisphere type from the open air, thereby facilitating the manufacturing thereof and improving the insulation effect. 
     Another embodiment of the present invention is to provide an insulation structure comprising insulation units coating a heat reflective film in a closed space of a hemisphere type, so that heat rays incident into the closed space of a hemisphere type are induced to make a scattered-reflection in parts, limitedly, and some heat rays are captured in the closed space of a hemisphere type, and the other heat rays are effectively discharged toward the incident portion thereof, thereby improving the insulation and warmth keeping effects, significantly. 
     Another embodiment of the present invention is to provide an insulation structure comprising a plurality of insulation units forming a partial reflective film of a hemisphere, pyramid or conical type in the inner space thereof, wherein a plurality of the insulation units are configured so that the partial heat reflective films are regularly arranged, thereby improving the insulation effect. 
     Another object of the present invention is to provide an insulation structure comprising a plurality of insulation units of a hemisphere, pyramid or conical type, on a part of the inner circumference of which a heat reflective film is coated in any one of a sphere, hemisphere, pyramid or conical form in parts, so that heat rays incident into the insulation units are induced to limitedly do the scatter-reflection toward one direction in the closed space to capture a part of heat rays in the closed space of the insulation unit and discharge the other heat rays toward the incident one, effectively, thereby improving the insulation and warmth keeping effects, significantly. 
     Technology Solution 
     According to a first embodiment of the present invention, an insulation structure comprises a coating membrane including a space therein and a plurality of insulation units including a heat reflective film to be coated on the entire inner circumference of the space. The insulation includes an integral independent entity, and the insulation unit is configured as a sphere or hemisphere type, on the outer circumference of which the heat reflective film is additionally coated. 
     The space of the insulating units is closed, into which an argon gas having the heat transmission coefficiency lower than that of air is injected. The heat reflective film is made of aluminum. The insulation unit is attached to a support member. The support member is made of any one of Vinyl sheets, Nonwoven fabrics, Synthetic fibers and Natural fibers. The insulation unit is filled up in a space of a predetermined size. The insulation structure has a diameter of 2 to 30 mm. 
     According to a second embodiment of the present invention, an insulation structure comprises an insulation unit including a sphere filling the inner part thereof, an insulation unit coating a heat reflective film on the outer circumference of the sphere and a mold including a space, in the inner portion of which a plurality of insulation units are filled up. The sphere is made of a foaming resin such as Styrofoam, etc. and the heat reflective film is made of aluminum. The mold includes the space made of at least one to be selected among Panels, Vinyl sheets, Non-woven fabrics, Synthetic fibers and Natural fibers. The insulation unit has a diameter of 10 to 100 mm. 
     According to a third embodiment of the present invention, an insulation structure comprises a first sheet including a heat reflective film formed on at least one surface thereof, a second sheet including a plurality of recesses of a hemisphere type in a domed form and a plurality of closed spaces formed by the recesses in a domed form between a surface forming the heat reflective film of the first sheet and the second sheet. The first sheet is made of at least one to be selected among Panels, Vinyl sheets, Non-woven fabrics, Synthetic fibers and Natural fibers. The heat reflective film includes an aluminum or silver foil. The second sheet is made of Synthetic resins or Vinyl. An argon gas having the heat transmission coefficiency lower than that of air is injected into the closed space. 
     According to a third embodiment of the present invention, a manufacturing method of an insulation structure comprises steps of forming a heat reflective film on at least one surface of a first sheet, forming a plurality of recesses of a hemisphere type in a domed form on the second sheet and forming a plurality of closed spaces by the recesses in a domed form between a surface forming the heat reflective film of the first sheet and the second sheet. In the process of forming the closed space, the method further comprises a step of injecting an argon gas having the heat transmission coefficiency lower than that of air into the closed space. 
     According to a fourth embodiment of the present invention, an insulation structure comprises insulation units of a rod type arranged adjacent to each other including a closed space formed therein and a heat reflective film formed on an entire surface or a part surface of the closed space. The insulation units of a rod type and the closed space are configured into a cylindrical shape along a length direction thereof. The insulation units of a rod type and the closed space are configured into a semi-cylindrical shape along a length direction thereof. The heat reflective film of a cylindrical shape is formed as a sphere or a hemisphere in the closed space. The heat reflective film of a semi-cylindrical shape is formed as a hemisphere in the closed space. The insulation unit of a rod type is made of a material including any one of Synthetic resins, Vinyl and Styrofoam. The heat reflective film includes an aluminum or silver foil. The second sheet is made of Synthetic resins or Vinyl. An argon gas having the heat transmission coefficiency lower than that of air is injected into the closed space. 
     According to a fifth embodiment of the present invention, an insulation structure comprises a basic material, a plurality of closed spaces of a hemisphere type formed on at least one side of the basic material, a heat reflective film formed in the closed space of a hemisphere type and a transparent sheet joined to the basic material forming the closed spaces to isolate the closed space from the open air thereon, wherein a thickness of the basic material is at least greater than a radius of the closed space. 
     According to the fifth embodiment of the present invention, an insulation structure comprises a basic material, a plurality of closed spaces of a hemisphere type formed on at least both sides of the basic material, a heat reflective film formed in the closed space of a hemisphere type and a transparent sheet joined to both sides of the basic material forming the closed spaces to isolate the closed space from open air thereon, wherein the basic material is made of a flame retardant resin and a vinyl resin. 
     According to a sixth embodiment of the present invention, an insulation structure comprises a coating membrane forming a closed space and a plurality of insulation units including a heat reflective film formed in parts on a curved surface of the inner circumference of the coating membrane to reflect heat rays incident into the closed space toward the outside of the coating membrane. The partial coating membrane includes at least one part that is transparent. The heat reflective film is in the form of any one to be selected among a hemisphere shape, a pyramid shape and a conical shape. The partial heat reflective film is disposed in a direction having a constant rule. The insulation structure further comprises a shell formed on at least one side thereof. 
     According to the sixth embodiment of the present invention, a manufacturing method of an insulation structure comprises steps of preparing a first sheet in the inner circumference of which a plurality of recesses are formed, forming the heat reflective film inside the recesses, preparing a second sheet on a side opposite to the recesses of the first sheet and joining the first sheet to the second sheet so that the recesses of the first sheet are formed in the closed space. The recess of the first sheet is in the form of any one to be selected among a hemisphere, a pyramid shape and a conical shape. 
     Also, the first sheet and the second sheet are made of a plastic vinyl, and the partial heat reflective film includes an aluminum film. 
     Advantage Effects 
     In a first embodiment of the present invention, an insulation structure is configured to form a set of insulation units of a sphere or hemisphere on the inner circumference of which a heat reflective film is coated in aluminum, thereby enabling the easy use in various fields requiring for the insulation. 
     The insulation structure has effects in that since it is difficult to easily radiate heat rays incident into the insulation unit from the outside the heat is effectively shut up or captured, thereby improving the limitation of the heat transmission coefficiency and movement onto both sides by the reference of the insulation structure. 
     Also, it is not anxious that the heat reflective film is exposed to the pollutant of the open air even under any condition regardless of a fixed mold. It has an effect in that even with lapse of a long time after installation the insulation efficiency does not drop. Further, even though a part of insulation units is damaged, only the insulation effect of corresponding parts drops. The other part is not influenced on the function. Therefore, it improves the work loss due to the replacement of bad parts of the insulation structure in the process of the installation and keeps the insulation quality at a constant level. 
     In a second embodiment of the present invention, an insulation structure comprises a sphere in the inner portion of which predetermined members are filled up, a plurality of insulation units including a heat reflective film coated on the outer circumference of the sphere and a mold provided with a space for filling up a plurality of insulation units, thereby providing effects of being able to flexibly apply to various fields necessary for the insulation. Also, it has an effect in that an area of the heat reflective film can be maximized to improve the limitations of the heat transmission coefficiency and movement toward both sides by the reference of the insulation structure. Also, it has an effect in that the space between the insulation units serves as a ventilating passage without providing a separate ventilator. 
     In a third embodiment of the present invention, an insulation structure comprises a first sheet forming a heat reflective film, a second sheet including a plurality of domed recesses and a plurality of closed spaces formed by the domed recesses between a surface forming the heat reflective film in the first sheet and the second sheet, thereby basically preventing the pollution of the heat reflective film and flexibly applying to various fields necessary for the insulation. It has an effect in that an area of the heat reflective film can be maximized to improve the limitations of the heat transmission coefficiency and movement toward both sides by the reference of the insulation structure. Also, it has an effect in that the space between the insulation units serves as a ventilating passage without providing a separate ventilator. 
     In a fourth embodiment of the present invention, an insulation structure comprises a closed space formed therein and a plurality of insulation units of a rod type forming a heat reflective film on an entire surface or a part of the closed space, wherein the insulation units are arranged adjacent to each another, thereby basically preventing the pollution of the heat reflective film and flexibly applying to various fields necessary for the insulation. It has an effect in that an area of the heat reflective film can be maximized to improve the limitations of the heat transmission coefficiency and movement toward both sides by the reference of the insulation structure. 
     In a fifth embodiment of the present invention, an insulation structure comprises a basic material, a plurality of a hemisphere type formed on the basic material, a heat reflective film formed in the closed space of a hemisphere type and a transparent sheet joined to the basic material, in the inner portion of which the closed space is formed, to be isolated from the outside, wherein the basic material has a thickness greater than a radius of the closed space of a hemisphere type. Therefore, the heat reflective film formed on the inner circumference of the closed space of a hemisphere type and the transparent sheet isolating the closed space from the outside act to have the excellent properties of the insulation and keeping warmth. It has an effect in that the basic material having a predetermined thickness always supports the shape of the closed space of a hemisphere space in a solid state to secure the stiffness of each of the insulation units. 
     Also, the heat rays incident into the transparent sheet are introduced to limitedly do the scattered-reflection in the hemisphere coating the heat reflective film, thereby repressing one part the convection movement of the heat, capturing other part in the closed space of a hemisphere type and discharging the other part toward the transparent sheet into which the heat rays were incident. Therefore, it has an effect in that the limitations to the heat transmission coefficiency and movement toward one side by the reference of the insulation unit are much improved. Also, it has effects in that the insulation efficiency doesn&#39;t drop even with lapse for a long time after installation, and the insulation function of the insulation of structure is not deteriorated even if a part of a plurality of insulation units is damaged. 
     In a sixth embodiment of the present invention, the insulation units constituted as a insulation structure includes a partial heat reflective film formed in a sphere, a hemisphere, a pyramid or conical shape on the inner circumference of a coating membrane including a closed space. Therefore, the heat rays incident into the insulation unit coating the heat reflective film in parts are introduced to do the scattered-reflection in the closed space of a sphere, a hemisphere, a pyramid or conical shape, thereby capturing a part of the heat rays and discharging the other heat rays by the partial heat reflective film toward the incident direction of the heat rays. it has an effect in that the limitations to the heat transmission coefficiency and movement toward one side by the reference of the insulation unit are much improved. Also, it has effects in that the insulation efficiency doesn&#39;t drop even with lapse for a long time after installation, and the insulation function of the insulation of structure is not deteriorated even if a part of a plurality of insulation units is damaged. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       The present invention will be described in detail with reference to the attaching drawings as follows; 
         FIG. 1  is a drawing showing an example of a heat reflective insulation panel according to a prior art, 
         FIG. 2  is a drawing showing the other example of a heat reflective insulation panel according to a prior art, 
         FIG. 3  is a cross-sectional view illustrating one example of an insulation unit according to a first embodiment of the present invention, 
         FIG. 4  is a cross-sectional view illustrating other example of the insulation unit according to the first embodiment of the present invention, 
         FIG. 5  is a solid view illustrating the insulation units of different sizes arranged in a set form according to the first embodiment of the present invention, 
         FIG. 6  is a solid view illustrating the insulation units of the same size arranged in a gathering state according to the first embodiment of the present invention, 
         FIG. 7  is a cross-sectional view illustrating one example of an insulation structure including the insulation units arranged in a gathering state according to the first embodiment of the present invention, 
         FIG. 8  is a cross-sectional view illustrating other example of an insulation structure including the insulation units arranged in a gathering state according to the first embodiment of the present invention, 
         FIG. 9  and  FIG. 10  each are cross-sectional views illustrating another embodiment according to the first embodiment of the invention, 
         FIG. 11  is a cross-sectional view illustrating insulating units according to a second embodiment of the present invention, 
         FIG. 12  is a solid view illustrating the insulation units of different sizes arranged in a set form according to the second embodiment of the present invention, 
         FIG. 13  is a solid view illustrating the insulation units of the same size arranged in a set form according to the second embodiment of the present invention, 
         FIG. 14  is a cross-sectional view illustrating one example of an insulation structure including the insulation units arranged in a gathering state according to the second embodiment of the present invention, 
         FIG. 15  is a cross-sectional view illustrating other example of an insulation structure including the insulation units arranged in a gathering state according to the second embodiment of the present invention, 
         FIG. 16  is a cross-sectional view of  FIG. 15 , 
         FIG. 17  is a solid view illustrating the other example according to a third embodiment of the present invention, 
         FIG. 18  is a cross-sectional view of  FIG. 17 , 
         FIG. 19  is a solid view illustrating one example according to a fourth embodiment of the present invention, 
         FIG. 20  is a cross-sectional view of  FIG. 19 , 
         FIG. 21  is a solid view illustrating the other example according to the fourth embodiment of the present invention, 
         FIG. 22  is a cross-sectional view of  FIG. 21 , 
         FIG. 23  is a cross-sectional view illustrating a heat reflective mechanism of an insulation unit included in an insulation structure according to a fifth embodiment of the present invention, 
         FIG. 24  is a solid view illustrating one example of an insulation structure according to the fifth embodiment of the present invention, 
         FIG. 25  is a cross-sectional view illustrating the insulation structure cut along Line A-A according to the fifth embodiment of the present invention, 
         FIG. 26  is a solid view illustrating the other example of the insulation structure according to the fifth embodiment of the present invention, 
         FIG. 27  is a cross-sectional view illustrating the insulation structure cut along Line B-B according to the fifth of the present invention, 
         FIG. 28  is a cross-sectional view illustrating a modified example according to the fifth embodiment of the present invention, 
         FIG. 29  is a solid view illustrating one example of an insulation structure according to a sixth embodiment of the present invention, 
         FIG. 30  is a partial cross-sectional view illustrating the insulation structure cut along Line A-A according to the sixth embodiment of the present invention, 
         FIG. 31  is a cross-sectional view illustrating one example attaching an outer shell to the insulation structure of  FIG. 29 , 
         FIG. 32  is a cross-sectional view illustrating the other example attaching an outer shell to the insulation structure of  FIG. 29 , 
         FIG. 33  is a schematic view illustrating a test chamber for testing the insulation unit according to the first embodiment of the present invention, 
         FIG. 34  is a simulative solid view illustrating the movement of a heat in each of the insulation units of a first example according to the sixth embodiment of the present invention, 
         FIG. 35  is a graph illustrating the movement of the heat in each of the insulation units according to the first example according to the sixth embodiment of the present invention, 
         FIG. 36  is a simulative solid view illustrating the movement of the heat in a plurality of the insulation units according to the first embodiment of the present invention, 
         FIG. 37  is a schematic view illustrating a test chamber for testing the insulation unit according to the sixth embodiment of the present invention, 
         FIG. 38  is a simulative solid view illustrating the movement of a heat in each of the insulation units according to the sixth embodiment of the present invention, 
         FIG. 39  is a graph illustrating the movement of the heat in each of the insulation units according to the sixth embodiment of the present invention, 
         FIG. 40  is a simulative solid view illustrating the movement of the heat in a plurality of the insulation units of the first example according to the sixth embodiment of the present invention, 
         FIG. 41  is a solid view illustrating the other example of the insulation structure according to the sixth embodiment of the present invention, 
         FIG. 42  is a partial cross-sectional view illustrating the insulation structure cut along Line B-B of  FIG. 41 . 
         FIG. 43  is a partial cross-sectional view illustrating another example according to the sixth embodiment of the present invention, 
         FIG. 44  is a partial cross-sectional cutting along Line C-C of  FIG. 43 , and 
         FIG. 45  is a view illustrating other aspect of the insulation unit according to the sixth embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Best Mode for Carrying Out the Invention 
     The present invention will be explained in detail in connection with the technical configuration, acting effect and manufacturing method of an insulation structure with reference to the attached drawings of  FIG. 3  to  FIG. 45 , as follows: 
     First Embodiment 
     A first embodiment of the present invention will be now described with reference to  FIGS. 3 to 10 . According to the first embodiment of the present invention, an insulation structure comprises a set of insulation units of a sphere or hemisphere type, for example a configuration that at least one layers of insulation units of a sphere or hemisphere type are arranged adjacent to each another, in the inner surface of which a heat reflective film is coated. 
     As shown in  FIG. 3 , for one example, an insulation unit  1050  comprises coating membranes  1010  each made of the same material and a heat reflective film  1020  coated on the inner circumference of the coating membrane  1010 , wherein the heat reflective is an integral independent sphere. It is preferable that the diameter of the insulation unit  1050  is set at 2˜30 mm, but the size is not limited and can be properly changed according to the conditions of use. 
     The insulating units  1050  of a sphere type is configured in a manner that a heat reflective film  1020  is coated on the inner circumference of the coating membrane  1010  made of Synthetic resins or Vinyl materials. The coating membrane  1010  is made of nonflammable materials or materials mixed with commercial obtained nonflammable ones except for above materials. 
     The heat reflective film is configured in a manner to coat a material having a higher heat reflective rate, for example an aluminum film by a predetermined thickness and seal the inner space of a sphere type for the entirely isolation from the open air. Additionally, argon gas having a heat transmission coefficiency lower than air is thrown into the inner space of a sphere type to be sealed. The insulation unit  1050  induces incident heat rays  1039  to be unintentionally reflected in the inner space thereof, thereby capturing the incident heat rays therein in case that the heat rays are thrown into and transmitted through the insulation unit from the outside thereof. It is difficult to pass the heat rays  1039  through the insulation unit and to radiate the heat. Therefore, it improves the insulation effect bordering on the insulation units  1050 . 
     Particularly, the inner space of the insulation units is basically prevented from the exposure of polluted air even with lapses of a long time. Therefore, it has an effect in that the heat reflective efficiency in the inner space of a sphere type is not deteriorated for a long time. 
     As shown in  FIG. 4 , a heat reflective film  1025  for example Aluminum film, etc. is coated is additionally coated on the outer circumference of the coating membrane  1010  in the insulation units  1050  of a sphere type. If the heat reflective film  1025  is formed on the outer circumference of the coating membrane  1010 , a part of the heat rays  1039  is reflected on the outside heat reflective film  1025 . The other heat rays  1039  transmitted into the insulation unit are unintentionally reflected and captured in the inner space of the insulation units, thereby increasing the insulation effect double 
     Also, as shown in  FIG. 5 , if insulation units  1050  include independent spheres, the insulation units  1050  are arranged in two stories, and insulation units  1049  of a relative smaller size are disposed in spaces between the insulation units  1050 . As shown in  FIG. 6 , the insulating units  1050  of the same size may be disposed in more than two layers. 
     As shown in  FIG. 7 , insulation units  1050  are arranged in a single story and wrapped in outer shells  1016  and  1017  for the support thereof. In other manner, as shown in  FIG. 8 , the insulation units are arranged in multiple stories, namely two stories in the drawing and wrapped in the outer shells  1016  and  1017  for the support thereof. 
     In  FIG. 7 , the outer shells  1016  and  1017  support the insulation units  1050  on only either side thereof. The insulation units  1050  are adhered by an adhesive to at least one side of the outer shell. The outer shells  1016  and  1017  enable the use of a plate material such as Styrofoam or the like, Wooden boards, Vinyl sheets, Nonwoven fabrics, Woven synthetic fibers, Cloths made of natural fibers. 
     As described above, regardless of a material of the outer shells  1016  and  1017 , the easy use of the insulation unit  1050  is possible because the insulation unit includes an independent sphere of a small size or a sheet form freely bent or folded. 
     If the outer shells  1016  and  1017  are made of a soft plate material of Styrofoam etc. or a hard plate material of Wooden boards, etc., the insulation units  1050  are filled up in spaces between them. The spaces between the insulation units  1050  has an advantage of serving as a ventilation passage with the open air without forming separate air passages in contact with the open air between the hard plates, thereby improving the efficiency of the installation work, significantly. Furthermore, the insulation units of a sphere or hemisphere type are randomly stacked in a predetermined space to greatly increase a total area of summing each of the heat reflective films thereof comparing with the configuration of a conventional plate sheet 
     If the outer shells  1016  and  1017  are made of Vinyl sheets, Nonwoven fabrics, Woven synthetic fibers, Cloths such as Natural fibers, etc., they can be freely bent or folded to allow the use thereof in a wall space of vehicles or spaces of winter clothes and curved wall spaces, etc., so that the installation is simple as well as an additional effect functioning as a cushion upon the collision in case of the use of vehicles, etc. is obtained. 
     Also, even though the insulation units  1049  and  1050  are damaged in parts, the other most insulation units are not taken any influence on the function, so that there is not extended any effect over the insulation quality without separate repairs. 
     According to the present invention, an insulation structure  1150  comprising insulation units  1050  disposed in a gathering state is not limited to a configuration as described above. For example, as shown in  FIG. 9 , an insulation structure  1150  comprises a plurality of insulation units  1050  including an upper sheet  1080  forming a plurality of hemispheres and a plurality of lower sheets  1090  formed to be symmetrical to the upper sheets  1080 , wherein the upper sheets  1080  are laid over the lower sheets  1090  to be coupled to each other. Of course, before the coupling of the upper sheet  1080  and the lower sheet  1090 , an aluminum film is previously coated on the opposite surfaces of the upper and lower sheets  1080  and  1090  of hemisphere type to form a heat reflective film  1020 . The upper and lower sheets may be made of a plastic material, a vinyl, a metal, etc. 
     Also, as shown in  FIG. 10 , an insulation structure  1150  comprises a plurality of insulation units  1060  of a hemisphere type coating an aluminum film on the surface of an outer shell  1017  to form a heat reflective film  1022  and attaching a plurality of upper sheets  1080  of a hemisphere type onto the reflective film  1022 . Before joining the upper sheet  1080  to an outer shell  1017 , the heat reflective film  1020  is previously formed in a manner to coat an aluminum film on the hemisphere surface of the upper or lower sheet. 
     In the configurations of  FIGS. 9 and 10 , on the outer surface of the upper and lower sheets or the outer surface of the outer shell  1017  an aluminum film, etc. may be additionally coated to form another heat reflective film. 
     Second Embodiment 
     A second embodiment will be described in detail with reference to  FIGS. 11 to 14 , as follows: 
     According to the second embodiment of the present invention, an insulation structure comprises insulation units of a sphere type in a gathering state, wherein the insulation units of a sphere type are regularly or unintentionally arranged in at least one story adjacent to each other and heat reflective films are coated on the outer circumference of each of the insulation units. 
     Giving an example, as shown in  FIG. 11 , an insulation unit  2050  comprises a sphere  2010  with a predetermined member being filled up therein and a heat reflective film  2020  coated on the outer surface of the sphere to form an integral independent sphere. It is preferable that the insulation units  2050  has a diameter of 10 to 100 mm, but its size is not limited thereto and may be properly changed and used according to the conditions of use. 
     The heat reflective film is formed in a manner to coat a material of a higher flexibility, for example an aluminum film by a predetermined thickness on an insulation unit. The insulation unit  2050  is configured so that if heat rays  2039  are incident toward the insulation units from the outside, incident heat rays are mostly reflected and only a part thereof is transmitted into the sphere of the insulation unit. Therefore, the heat rays  2039  makes it difficult to pass through the insulation unit and radiate the heat thereof. If the insulation units  2050  are arranged in a plurality of gathering groups, it improves the insulation effect bordering on the insulation units. 
     Furthermore, as shown in  FIG. 12 , insulation units  2050  are constructed in a multilayered arrangement to dispose relative smaller insulation units  2048  in spaces between the insulation units  2050 . Otherwise, as shown in  FIG. 13 , insulation units  2050  are configured in a multilayered arrangement in a manner to lay the insulation units of the same size one upon another. 
     As shown in  FIG. 14 , the insulation units  2050  are regularly or unintentionally filled up in a space  2060  of a mold constituted as outer shells  2016  and  2017  to form an insulation structure  2150 . 
     The mold constituted as the outer shells  2016  and  2017  may use any one of Plate materials such as Styrofoam, etc., Wooden boards, Vinyl sheets, Nonwoven fabrics, Woven synthetic fibers, Cloths made of natural fibers, Gauzes, etc. Namely, it is enough if the mold has a space for holding the insulation units  2050  therein. 
     As described above, the mold is not influenced on a material to be constructed. The reason is why the insulation units  2050  are constructed as an independent sphere of a relative smaller size to be able to use a sheet that is freely bendable or foldable. 
     If the outer shell  2016  and  2017  are made of plate materials of Styrofoam, etc. and hard plate materials of wooden boards, etc., the insulation units are filled up in the space formed by the outer shells. It has an advantage in that spaces between the insulation units  2050  of a sphere type function as a ventilation passage with the open air, thereby improving the installation work efficiency of the insulation structure, significantly. 
     If the outer shells  2016  and  2017  are made of Vinyl sheets, Nonwoven fabrics, Woven synthetic fibers, Cloths made of natural fibers, Gauzes, etc., the insulation structure is freely bendable or foldable to enable the compatible use in a curved wall space, etc., thereby simplifying the installation work. Even though a part of the insulation units  2049  and  2050  is damaged, the other mostly insulation units don&#39;t extend any effect over the function of the insulation structure and the insulation quality without separate repairs. 
     According to the second embodiment of the present invention, the insulation structure  2150  comprising the insulation units  2050  in a gathering state is not limited to a configuration as described above and can be constructed as various configurations such as Ellipsoid, Polyhedron, etc. 
     Third Embodiment 
     A third embodiment of the present of the invention will be described in detail with reference to  FIGS. 15 to 18 , as follows. 
     As shown in  FIGS. 15 and 16 , an insulation structure  3150  comprises a first sheet  3016 , a second sheet  3017  and a heat reflective film  3020  formed on one side of the first sheet  3016 . The second sheet  2017  includes a plurality of a domed recesses  3117  arranged in the same direction. The recesses  3117  are preferably constructed as a configuration of a hemisphere type or a sphere type having a diameter of 10 to 100 mm, but not limited to the size and shape. The recess may be variously changed and used according to the conditions of use. 
     The second sheet  3017  is attached to a surface forming a heat reflective film  3020  of the first sheet, so that each of the recesses  3117  forms a closed space  3217 . An argon gas having a heat transmission coefficiency lower than that of air may be injected into the closed space. 
     It is desirable that the first sheet  3016  is flexible and makes it easy to adhere thereto or coat thereon the heat reflective film  3020 . If the heat reflective film  3020  such as a silver foil, etc. is used, the first sheet  3016  may be made of non-woven fibers, synthetic fibers, natural fibers, gauzes or the like for the use thereof. If the heat reflective film  3020  is formed in a manner to coat a metal such as an aluminum, etc., a thin metal or non-metal panel, a synthetic resin, a vinyl, etc. that are advantageous to the coating may be used in forming the first sheet. 
     On the other hand, the second sheet  3017  is made of a transparent material for the light transmission, etc., but not limited to the transparent material. The second sheet  3017  includes a synthetic resin sheet, a vinyl sheet or the like for the conveniences of its handling and manufacturing. The fireproofing and flame-retardant processes may be added to the first sheet  3016  and the second sheet  3017 . 
     As described above, if the heat rays  3039  are incident into the closed space  3217  from the outside of the second sheet  3117 , the insulation structure  3150  retards the heat radiation due to it that a part of the hot rays is reflected and the other is captured in the closed space into which the argon gas is injected. Therefore, it improves effects to retard the heat movement and isolate the heat from the outside bordering on the insulation structure  3150 . 
     Also, according to the third embodiment of the present invention, since the insulation structure  3150  is constructed in the form of a freely bendable or foldable sheet, it is properly usable in a curved wall space, etc., and the installation work is simple. Also, it has an advantage in that the uneven spaces in the insulation structure function as a ventilating passage with the open air without forming a separate air one contacting with the open air between the insulation structures, thereby improving the efficiency of the installation work of the insulation structure, significantly. 
     Furthermore, even though the closed spaces of the insulation structure  3217  are damaged in parts (severally), the insulation structure has advantages in that the other most closed spaces are kept in a closed state and not anxious about the exposure to the open air as well as the function of the heat reflective film is not deteriorated even with the lapse of long time due to it that the heat reflective film is basically isolated from the pollutant source. 
     According to the third embodiment of the present invention, the insulation structure is not limited to the configuration of  FIGS. 15 and 16 . As shown in  FIGS. 17 and 18  the insulation structure  3250  comprise a first sheet  3016  and a second sheet  3017  attached to be faced to each other on the opposite sides of the first sheet  3016 . In other words, the heat reflective films  3020  are formed on the opposite sides of the first sheet  3016 , and the second sheets  3017  are joined to each of the opposite sides of the first sheet  3016 , so that the insulation structure  3250  is formed to have the closed spaces  3217  bordering on the heat reflective films. 
       FIGS. 17 and 18  illustrate a configuration of attaching the second sheets  3017  to be faced to each other to the opposite sides of the first sheet  3016 , but the present invention is not limited to the configuration. For example, the second sheets  3017  may be attached in a staggered arrangement to the opposite sides of the first sheet. 
     Thereafter, according to the third embodiment of the present invention, a manufacturing method of the insulation structures  3150  and  3250  will be explained as follows; 
     First, a heat reflective film  3020  is formed on one side or opposite sides of a first sheet  3016 . The heat reflective film  3020  is constructed in a manner to directly coat a metal film of aluminum on the first sheet or attach a silver foil to the first sheet using an adhesive. 
     Subsequently, the recesses  3217  of a domed shape are formed on the second sheets  3017 , and then the second sheets  3017  are attached by an adhesive to the heat reflective films  3020  to form a plurality of closed spaces  3217  by a domed recess between a surface forming the heat reflective film  3020  and the second sheet  3017 . In the process of forming the closed spaces  3017  there is performed an additional procedure of injecting an argon gas having heat transmission coefficiency lower than that of air into the closed space  3217 . The argon gas acts to retard the heat movement over the air. 
     Fourth Embodiment 
     A fourth embodiment of the present invention will be described with reference to  FIGS. 19 to 22  as follows; 
     As shown in  FIGS. 19 and 20 , according to the fourth embodiment of the present invention, an insulation structure  4150  comprises insulating units  4050  of a rod type to be cylindrical. Each of the insulating units  4050  of a rod type includes a coating membrane  4010  made of Synthetic resins, Vinyl, Styrofoam, etc., an integral closed space formed in the coating membrane along the length direction of the insulation units  4150  and a heat reflective formed in the closed space. 
     As shown in  FIG. 20 ( a ) , the heat reflective film  4025  is formed in a manner to coat aluminum or use a silver foil, etc. on the entire inner circumference of the closed space  4017  that is isolated by the coating membrane  4010 . As shown in  FIG. 20( b ) , a heat reflective film  4125  may be configured in the form of a hemisphere type, for example a domed shape. If the heat reflective film  4125  is formed in a hemisphere type, it is disposed along a constant direction. 
     It is desirable to construct the closed space having a diameter of less than 10 to 100 mm, but not limited to the size and shape. According to the conditions of use, the closed spaces may be variously changed. The argon gas having the heat transmission coefficiency lower than that of air may be injected into the closed space  4017 . The closed space  4017  is sealed at the opposite ends of the insulation unit  4050  to be isolated from the open air. The coating membrane  4010  may be additionally processed with fireproofing and flame retarding procedures. 
     If the heat rays  4039  are incident into the closed space  4017  from the outside, in the configuration of  FIG. 20( a )  the insulating structure  4150  as described above allows the heat rays  4039  to do the scattered-reflection on the heat reflective film  4025 , so that the mostly heat rays are captured and retarded. In the configuration of  FIG. 20( b ) , the mostly heat rays  4039  are reflected only in one direction by the partial heat reflective film  4125 , and a part thereof is captured in the closed space  4217  into which the argon gas is injected, thereby retarding the heat radiation. Therefore, it improves the effects of retarding the heat movement and isolating the heat bordering on the insulation structure  4150 . 
     Also, according to the fourth embodiment of the present invention, the insulation structure  4150  is bendable or foldable in one direction, thereby enabling the compatible use in the space of a curved wall and simple installation work thereof. It has advantages in that the spaces between the insulation structures function as an air ventilation passage to the open air without forming a separate ventilator in contact with the insulation structure, thereby improving the efficiency of the installation work of the insulation structure, significantly. 
     Furthermore, even though the closed spaces  4017  of the insulation structure are damaged in parts, the other mostly closed spaces are kept in a closed state. Therefore, it has advantages in that the insulation structure is not anxious about the exposure to the open air, and the function of the heat reflective films  4025  and  4125  is not deteriorated even with the lapse of long time due to it that the heat reflective film is basically isolated from the pollutant source. 
     According to the fourth embodiment of the present invention, the insulation structure is not limited to the configuration of  FIGS. 19 and 20 . As shown in  FIGS. 21 and 22  an insulation structure comprises insulation units  4060  of a rod type in a domed shape. 
     As shown in  FIG. 22 , an insulation structure  4150  comprises insulation units  4060  of a rod type including a coating membrane  4010  made of Synthetic resins, Vinyl, Styrofoam, etc., an integral closed space  4117  formed in the coating membrane along the length direction of the insulation units and a heat reflective formed in the closed space. 
     As shown in  FIG. 22 ( a ) , a heat reflective film  4220  is formed in a manner to coat aluminum or use a silver foil, etc., on the entire inner circumference of the closed space  4117  that is isolated by the coating membrane  4220 . As shown in  FIG. 22( b ) , a heat reflective film  4320  may be made in the form of a hemisphere, for example a domed shape. 
     An argon gas may be injected into the closed space  4117 . The closed space  4117  is sealed at the opposite sides of the insulation structure  4060  to be isolated from the open air. The argon gas acts to retard the heat movement over air. 
     Fifth Embodiment 
     A fifth embodiment of the present invention will be described with reference to  FIGS. 23 to 28  as follows. 
     According to the fifth embodiment of the present invention, as shown in  FIG. 23  an insulation structure comprises a basic material  5200  having a predetermined thickness and a plurality of insulation units  5250  including a closed space  5030  of a hemisphere type formed in the basic material, a heat reflective film  5120  coating on the inner circumferential surface of the closed space  5030  of a hemisphere type and a transparent sheet  5040  sealing the closed space  5030 . The closed space  5030  is made in a sphere or a domed shape of a pillar type. 
     The basic material  5200  has at least a thickness larger than a semi-diameter of the closed space  5030  of a hemisphere type and comprises a flat board structure when a transparent sheet  5040  is attached on the outer side thereof. 
     The basic material  5200  may be made of Synthetic resins, Rubber materials, Vinyl resins, Styrofoam, etc. which have a property of the flame retardant. The transparent sheet  5040  may be made of Synthetic resins or Vinyl resins, etc. 
     The basic material  5200  is not limited to the materials as described above and may be made of various materials including Glasses, Woods, Plaster, Stones, etc. The heat reflective film  5120  is configured to coat or deposit a thin aluminum film. Particularly, the invention is constructed so that the thickness of the basic material  5200  is over the semi-diameter of the closed space, thereby preventing the variation of the closed space  5030 . 
     As described above, if heat rays  5039  are incident into the insulation structure  5250  through the transparent sheet  5040 , the heat rays  5039  incident into the insulation unit by the heat reflective film  5120  coated on the inner circumference of the closed space  5030  are introduced to restrictively do the scattered-reflection toward one direction in the inner portion of the closed space, so that a part of heat rays is kept in a captured state in the closed space and the other heat rays are reflected and emitted toward the incident portion, for example the transparent sheet  5040  with the heat reflective film being not formed. 
     As described above, the insulation structure is configured so that the heat rays  5039  are restrictively reflected in a scattered manner in parts therein, and the other heat rays are emitted toward the incident portion. Comparing with a configuration of sealing the entire surface with the heat reflective film, the insulation structure rather raises the insulation property thanks to the limitation of the heat convection by the scattered-reflection of the heat rays. The improvement effect of the insulation property will be known in a comparison example described in a sixth embodiment of the present invention. 
     As described above, according to the fifth embodiment of the present invention, the configuration and acting effect of the insulation structure  5450  will be explained with reference to  FIGS. 24 and 25  as follows; 
     An insulation structure  5450  comprises insulation units  5250  of a gathering state coating a heat reflective film  5120  in parts in a closed space of a hemisphere type. The insulation units  5250  are engraved into the basic material  5200  of a predetermined thickness. 
     The basic material  5200  is made of Synthetic resins, Rubber materials, Vinyl resins, Styrofoam, etc. that have a property of the flame-retardant. 
     Each of the insulation units  5250  comprises a closed space  5030  of a hemisphere type formed on the surface of the basic material  5200 , a heat reflective film  5120  coated on the inner circumference of the closed space of a hemisphere type and a transparent sheet  5040  sealing the closed space  5030  of a hemisphere type on the inner circumference of which the heat reflective film is formed. It is preferable that a diameter of the insulation unit  5250  is within the range of 2 to 35 mm, but not limited to this size. The size may be properly changed according to the conditions of use. 
     The transparent sheet  5040  is made of Synthetic resins of transparent plastics, transparent Vinyl materials, etc. to have a thickness of 0.1 to 0.2 mm, and the heat reflective film  5120  is configured to coat an aluminum film having a thickness of 0.005 to 0.02. The closed space  5030  of a hemisphere type forming the heat reflective film  5120  on the inner circumference thereof is sealed by the transparent sheet  5040  to be isolated from the open air. The air may be filled up in the closed space of a hemisphere type at a predetermined pressure. Furthermore, the argon gas having the heat transmission coefficiency lower than that of the air may be injected and sealed into the closed space. 
     The insulation structure  5250  as described above makes the heat rays limitedly do the scattered-reflection by the heat reflective film  5120  in the closed space of a hemisphere type if the heat rays  5039  are incident from the outside into the inside of the insulation units  5120 , so that a part of the heat rays is kept in a captured state therein and the other is radiated through the transparent sheet  5040 . Therefore, the convection movement of the heat doesn&#39;t happen lively in the closed space, thereby making the temperature change gotten small and improving the insulation property. 
     The insulation unit  5250  makes the closed space thereof basically isolated from the polluted open air even with lapse of long time after installation. Therefore, the reflective efficiency of the heat is not deteriorated for a long time. It has an advantage in that the insulation units are supported by the basic materials  5200  to be not easily changed in a structure by external force. 
     The insulation structure  5450  is no limited to the configurations of  FIGS. 24 and 25 , and instead may be constructed like a configuration shown in  FIGS. 26 and 27 . As shown in  FIGS. 27 and 28 , an insulation structure  5550  comprises insulation units  5250  of a hemisphere type to face each other in the basic material  5200 . The insulation units  5250  is arranged to place the relatively thinner basic material  5200  there between as shown in  FIG. 28  and to form the basic material  5200  thicker than the configuration as shown in  FIG. 27 . 
     Sixth Embodiment 
     A sixth embodiment of the present invention will be explained in detail with reference to  FIGS. 29 to 45 . 
     As shown in  FIGS. 29 to 30 , an insulation structure  6550  comprises insulation units  6250 , on a part of which a heat reflective film  6210  is coated in a closed space. The insulation units  6250  comprises coating membranes  6110 , each of which is made of the same material, and a heat reflective film  6120  of a hemisphere type in a domed form, a part of which is coated in an inner space of the coating membrane. Therefore, the insulation unit includes an integral independent sphere. It is preferable that a diameter of the insulation unit is 2 to 35 mm, but not limited to the size and may be properly changed in a size according to the conditions of use. 
     The insulation unit  6250  of a sphere type is constructed in a manner to form a partial heat reflective film  6120  on the inner circumference of the coating membrane  6110  made of Synthetic resins including a transparent plastic, etc. and transparent Vinyl. The coating membrane  6110  has a thickness of 0.1 to 0.2 mm. The heat reflective film  6120  includes an aluminum film coated in parts by a thickness of 0.005 to 0.01 mm. The coating membrane may be made of a transparent flame retardant material or a material mixed with a transparent flame retardant one. A part of the coating membrane coated with the partial heat reflective film  6120  may not be positively made of a transparent material and instead an opaque material. 
     After or in the procedure that the partial heat reflective film  6120  is formed, the closed space of a sphere type is completely sealed to be isolated from the open air. The closed space is filled up with air in a predetermined pressure. Also, the closed space may be filled up with an argon gas, etc. having the heat transmission coefficiency lower than that of air. 
     The insulation unit  6250  makes the heat rays do the scattered reflection by the partial heat reflective film  6120 , if the heat rays  6039  are incident and transmitted into the inside from the outside of the insulation unit. Therefore, a part of the incident heat rays is kept in a captured state in the closed space, and the other is mostly radiated through a portion having the partial heat reflective film. It improves the insulation property to keep warmth bordering on the insulation units  6250 . 
     The insulation unit  6250  makes the closed space thereof basically isolated from the polluted outside air even with lapse of long time after installation. Therefore, the heat reflective efficiency in the closed space of a sphere type is not deteriorated for a long time. The insulation units  6250  each may be made of a sphere type to be independent completely, but the insulation units  6250  are preferably constructed in a gathering group of an integral manner to form an insulation structure  6550  as shown in  FIG. 29  considering a manufacturing cost. 
     As shown in  FIG. 29 , a manufacturing method of an insulation structure  6550  comprises steps of preparing a plurality of upper coating membranes  6110  made of a transparent vinyl having a thickness of 0.1 m, each of which is formed in a domed shape having a recess of a hemisphere type, forming a partial heat reflective film coating an aluminum film of 0.006 mm in a domed shape in the inner circumference of the upper coating membrane  6110 , preparing a plurality of lower coating membranes  6110  made of a transparent vinyl having a thickness of 0.1 m, each of which is formed in a domed shape having a recess of a hemisphere type, and joining the upper coating membrane  6110  forming the partial heat reflective film to the lower coating membrane  6110  to face their domed structures to each other and form a closed space of a sphere type. 
     The insulation structure  6550  is formed in a single story and supported with outer shells  6016  and  6017  being wrapped as shown in  FIG. 31  or stacked in multilayered stories and supported with outer shells  6016  and  6017  being wrapped as shown in  FIG. 32 . In  FIGS. 31 and 32 , the outer shells  6016  and  6017  are supported only on one side thereof and made of a plate material of Styrofoam etc., Wooden boards, Vinyl sheets, Nonwoven fabrics, Woven synthetic fibers, Cloths made of natural fibers. 
     According to the sixth embodiment of the present invention, the insulation structure has advantages in that the spaces between the insulation units serve as a ventilation passage with the open air, thereby improving the efficiency of the installation work, significantly. Furthermore, the insulation structure is freely bendable and foldable to be compatibly used in a space of a curved wall, etc. Further, even if a part of the insulation units is damaged, the other mostly insulation units is not taken effect on the function thereof, so that any influence on the insulation efficiency is not taken, greatly, without a separate repair. 
     Examples of the insulation characteristics of an insulation unit in the sixth embodiment and an insulation unit in the first embodiment compared and tested will be described with reference to  FIGS. 33 to 40 . 
     First, as shown in  FIG. 33 , a sample of the insulation unit in the first embodiment is made and put in a test chamber. 
     The insulation unit  1050  are constructed so that a coating membrane  1010  made of a transparent vinyl having a thickness of 0.1 mm includes a sphere, an aluminum film is coated on the entire inner circumference of an inner space of a sphere type by a thickness of 0.006 mm to form a heat reflective film  1020 . An outer diameter of the insulation unit  1050  is fixed by 30 mm. 
     The test chamber includes a regular hexahedron having an inner space of a volume of 30 mm×30 mm×30 mm, which comprises a first surface  6501  positioned in an incident direction of the heat rays and isolating films  6503  of four surfaces for preventing the transmission and emission of the heat rays except the second surfaces  6502  facing the first surface  6501 . The first and second surfaces  6501  and  6502  includes a double board of a polyester having a thickness of 3 mm and a heat conductivity of λ=0.027 W/mk. 
     In one example of the first embodiment, the insulation unit  1050  between the first and second surfaces  6501  and  6502  is set in the test chamber. After the first surface  6501  and the second surface  6502  are isolated from the open air positioning on each sides of 20° C. and 0° C., the temperature changes are measured using Comsol multiphysics simulation program equipment at positions of {circle around (1)}, {circle around (2)}, {circle around (3)}, {circle around (4)} for approximately one day. 
     Subsequently, after the insulation unit  6250  in the sixth embodiment is manufactured in the same method, condition and size to be compared with the characteristics of one example of the first embodiment, the insulation unit  6250  is set in the test chamber under the same conditions as shown in  FIG. 37  to measure the temperature changes at positions of {circle around (1)}, {circle around (2)}, {circle around (3)}, {circle around (4)} for approximately one day. Only, the insulation unit  6250  is disposed so that the partial heat reflective film  6120  is positioned on the second surface to face the first surface  6501 . 
     The inner spaces of a sphere type in the insulation units  1050  and  6250  according to the first and sixth embodiments are manufactured to have the same pressure at a normal temperature. A result for measuring the temperature change under the same conditions shows that as known in a simulation solid view of  FIG. 34  the diffusion movement of the heat to the inner space of the insulation unit  1050  is not made, lively, for 8000 seconds (about 2 hours), and the heat emission toward the second surface  6502  by the reference of the insulation unit  1050  doesn&#39;t occur, greatly. 
     As known in a simulation solid view of  FIG. 38 , the insulation unit  6250  in the sixth embodiment deteriorates the heat diffusion movement in the inner space thereof for 8000 seconds (about 2 hours), significantly, compared with that of  FIG. 34 , and the heat emission toward the second surface by the reference of the insulation unit  6250  doesn&#39;t occur, almost. 
     In  FIGS. 34 and 38 , most deep red portions show regions nearing 20° C., and a blue portion shows a low temperature region getting into most deep blue. Namely, it is known that the insulation unit  6250  in the sixth embodiment has the insulation property superior than that of one 1050 in the first embodiment. 
     Graphs illustrating heat movements of each of the insulation units  1050  and  6250  in the first and sixth embodiments as shown in  FIGS. 35 and 39  are compared with each other per every time. It is known that the insulation unit in  FIG. 35  is raised at the point {circle around (1)} by about 14° C. for 3000 seconds (approximately 3 hours), and the insulation unit in  FIG. 39  is raised by about 16° C. for 3000. The reason is why the heat rays reflected in the insulation unit is emitted toward the first surface  6501  through the transparent part of the coating membrane not to form the reflective film. But, it is known that the temperature changes at the points {circle around (2)}, {circle around (3)} and {circle around (4)} of the insulation unit in both grapes have remarkable differences. 
     At the points {circle around (2)} and {circle around (3)} of the insulation unit in both grapes the temperature is raised by 10° C. for 10,000 seconds (approximately 3 hours) in  FIG. 35 , and at the point {circle around (4)} the temperature is raised by 6° C. Thereafter, the temperature is kept at a constant level without being changed for 80,000 seconds (approximately one day). In  FIG. 39 , the temperature is raised by 7° C. for 10,000 seconds (approximately 3 hours), and at the point {circle around (4)} the temperature is raised only by 2° C. Thereafter, the temperature is kept at a constant level without being changed for approximately one day. 
     As shown in grapes of  FIGS. 35 and 39 , at the points {circle around (2)}, {circle around (3)} and {circle around (4)} of the insulation units, the maximum temperature in the grape of  FIG. 39  is lower than that in the grape of  FIG. 35  and the insulation units are kept at a relatively lower temperature for approximately one day. 
     In addition to these tests, as shown in  FIGS. 36 and 40 , the insulation units  1050  and  6250  are disposed in each of the test chambers having a different size to measure the temperature change. It is confirmed that the measured results shows a same pattern. As known from the test results the insulation unit  6250  of the sixth embodiment forming the partial heat reflective film of a hemisphere type has the insulation property superior than that of the heat reflective film on the inner front of the first embodiment. 
     The reason is why the heat rays incident into the insulation unit by the partial heat reflective film in a domed shape are induced to limitedly do the scattered-reflection in the inner space of a sphere type to make a part of the heat rays at a captured state in the space of a sphere type and the other reflected and emitted toward a portion excluding the heat reflective film. 
     Even if a coating area of the partial heat reflective film  6120  is coated by over about 60 to 70% over the region of a hemisphere type or by about 40%, the insulation unit of the present invention derives the same result. 
     Another example in the sixth embodiment of the present invention will be described with reference to  FIGS. 41 and 42  as follows; 
     As shown in  FIGS. 41 and 42 , an insulation structure  6650  comprises insulation units  6350  coating a heat reflective film  6220  in parts in a closed space. 
     The insulation unit  6350  comprises a coating membrane  6210  of a hemisphere type made of the same material, a partial heat reflective film  6220  formed by a method of coating an inner space of the coating membrane and a planar coating membrane  6310  made of a transparent vinyl joined to the coating membrane to isolate the coating membrane from the open air and form the closed space. 
     A diameter of the insulation unit  6350  of a hemisphere type is preferably 2 to 35 mm, but not limited thereto and may be properly changed and used according to the conditions of use. 
     The insulation unit  6350  of a hemisphere type comprises a partial heat reflective film  6220  formed on the inner circumference of the coating membrane  6210  of a hemisphere type made of Synthetic resins, for example transparent plastic, etc. and a transparent vinyl material. The coating membrane  6210  has a thickness of 0.005 to 0.01 mm, the partial reflective film  6220  is coated with an aluminum film of a thickness of 0.005 to 0.01 mm and the coating membrane is made of a known transparent fireproofing material or a material mixed with a transparent flame-retardant material. The coating membrane coating the partial heat reflective film and the planar coating membrane may be positively not necessary a transparent material, and instead an opaque material is usable. 
     After or in the process of forming the partial reflective film  6220 , the inner space of a hemisphere type is entirely isolated from the open air. The air is filled up at a predetermined pressure in the inner space of a hemisphere type, or the argon gas having the heat transmission coefficiency lower than that of air is injected into the inner space of a hemisphere type. And then the closed space is sealed. 
     In the insulation1 unit  6350  as described above, if the heat rays  6039  are incident into and transmitted through the inner portion from the outside of the insulation unit, the incident heat rays are reflected in a scattered manner by the partial heat reflective film in the inner space of a hemisphere type, a part thereof is kept in a captured state and the other part thereof is transmitted through the planar coating membrane  6310  that doesn&#39;t form the heat reflective film and radiated toward the incident portion of the heat rays in the inner space. Therefore, the insulation characteristic is improved with the warmth being kept bordering on the insulation unit  6350 . 
     The insulation unit  6350  makes its inner space thereof basically isolated from the exposure to the open air polluted even with lapse of a long time after installation, thereby preventing the deterioration of the heat reflective efficiency in the inner space of a hemisphere type, permanently. 
     The insulation unit  6350  may be constructed in each of independent hemisphere bodies, but as shown in  FIG. 41  it is preferable to configure an insulation unit  6650  including the insulation units  6350  to be integrally gathered in groups. 
     As shown in  FIG. 41 , a manufacturing method of an insulation structure  6650  comprises steps of preparing an upper coating membrane  6210  made of a transparent vinyl having a thickness of 0.1 mm, wherein the upper coating membrane includes a plurality of domed structures provided with a recess of a hemisphere type, forming a partial heat reflective film  6220  including an aluminum having a thickness of 0.1 mm coated on the inner circumference of the recess in the upper coating membrane  6210 , preparing a lower planar coating membrane  6310  made of a vinyl having a thickness of 0.1 mm, preparing an upper coating membrane  6210  including the partial heat reflective film formed in the recess and forming a closed space of a hemisphere type attaching the lower planar coating membrane  6310  to the upper coating membrane  6210  to face each other. 
     The other example of the sixth embodiment according to the present invention will be described with reference to  FIGS. 42 to 45  as follows; 
     In  FIGS. 42 to 45 , an insulation structure  6750  comprises insulation units  6450  including a partial reflective film  6320  coated in parts on a closed space thereof. The insulation unit  6450  comprises a pyramid coating membrane  6315  each made of the same material, a partial heat reflective film  6320  formed in a manner to be coated in the inner space of the coating membrane and a planar coating membrane  6410  made of a vinyl that is joined to the pyramid coating membrane to form a closed space covering the pyramid planar coating membrane. The insulation unit  6450  may be properly changed and used in size changed according to the conditions of use. 
     The pyramid insulation unit  6450  includes a partial heat reflective film  6320  formed on the inner circumference of the pyramid coating membrane made of Synthetic resin such as a transparent plastic, a transparent vinyl, etc. The coating membrane  6315  has a thickness of 0.1 to 0.2 mm, the partial reflective film  6320  includes an aluminum film coated by a thickness of 0.005 to 0.01 mm and the coating membrane made of a transparent flame retardant material or a material mixed with a transparent flame retardant one. The coating membrane  6315  coating the partial heat reflective film  6320  and the planar coating membrane  6410  may be made of an opaque material, positively not made of a transparent material. 
     After or in the process of forming the partial reflective film  6320 , the pyramid inner space is completely isolated from the open water. The air is filled up at a predetermined pressure in the pyramid inner space sealed, or the argon gas having the heat transmission coefficiency lower than air is injected into the pyramid inner space. 
     In the insulation1 unit  6450  as described above, if the heat rays  6039  are incident into and transmitted through the inner portion from the outside of the insulation unit, the incident heat rays are reflected in a scattered manner by the partial heat reflective film  6320  in the inner space of a pyramid type, a part thereof is kept in a captured state and the other part thereof is transmitted through the planar coating membrane  6410  that doesn&#39;t form the heat reflective film and radiated toward the incident portion of the heat rays in the inner space. Therefore, the insulation characteristic is improved with the warmth being kept bordering on the insulation unit  6450 . 
     The insulation unit  6450  makes its inner space thereof basically isolated from the exposure to the open air polluted even with lapse of a long time after installation, thereby preventing the deterioration of the heat reflective efficiency in the inner space of a pyramid type, permanently. 
     The insulation unit  6450  may be constructed in each of independent hemisphere bodies, but as shown in  FIG. 43  it is preferable to configure an insulation unit  6750  including the insulation units  6450  to be integrally gathered in groups. 
     As shown in  FIG. 43 , a manufacturing method of the insulation structure  6750  comprises steps of preparing an upper coating membrane  6315  made of a transparent vinyl having a thickness of 0.1 mm, wherein the upper coating membrane includes a plurality of configurations provided with a recess of a pyramid type, forming a partial heat reflective film  6220  including an aluminum having a thickness of 0.06 mm coated on the inner circumference of the recess in the upper coating membrane  6210 , preparing a lower planar coating membrane  6410  made of a vinyl having a thickness of 0.1 mm, preparing an upper coating membrane  6315  including the partial heat reflective film formed in the recess and forming a closed space of a hemisphere type attaching the lower planar coating membrane  6110  to the upper coating membrane  6315  to face each other. 
     In  FIG. 43 , the insulation structure is not limited to the closed space of a 4-sided pyramid type, but configured in a various form of a five-sided pyramid, 5-sided pyramid and a conical shape, etc. as shown in  FIG. 45 . The heat rays are reflected in a scattered manner by the partial heat reflection film having a curved surface in the closed space. A part of the heat rays doing the scattered-reflection reflected in a scattered form partial heat reflection film. 
     In the sixth embodiment, there are omitted some drawings and explanation, but a configuration of mixing insulation units having various sizes and shapes may be made. In this case, it is preferable that patterns of the partial heat reflective films in each of insulation units are disposed in a manner to have a certain rule. 
     As described above, the explanation from the first embodiment to the sixed embodiment is made, but not limited thereto. The present invention can be variously changed and executed within the patent claiming scope and the objects of the invention. 
     INDUSTRIAL APPLICABILITY 
     In construction fields, etc. there are done various studies for increasing the insulation efficiency. For one example, Korean Patent Laid-Open Publication No. 2011-82099 discloses that as shown in  FIG. 1  a heat reflective multi-story panel  100  comprises a pair of heat reflective plates  20  and  20   a  disposing heat reflective materials  23  to face each other on one sides of each of surface materials  21  and  21   a  and a spacer  30  inserted between the heat reflective plates  20  and  20   a  to form an air layer. 
     Also, as shown in  FIG. 2 , Korean Patent Laid-Open Publications No. 2013-19786 discloses that an insulation structure comprises a first insulation panel  110  and a second insulation panel  120  each including a first radiant heat reflective sheet  141  and a second radiant heat reflective sheet  142  disposed on each one side thereof to face each other and an intermediate panel  130  each forming grooves  131  and  132  in a certain pattern between the radiant heat reflective sheets  141  and  142 . 
     As described above, the general insulation structures have disadvantages in that since the heat reflective plate and the radiant heat reflective sheet are easily exposed to a pollution source due to the open air, the heat reflective efficiency is decreased as time passes after installation. Due to it, the insulation durability drops. 
     Also, it has structural defects in that due to a larger volume and greater size the insulation structure is difficult to handle, used only for the building insulation and has limitations to the use compatible with home appliances and industrial plants such as special clothes, automobiles, refrigerators, etc. that need the insulation or keeping warmth except for the building insulation. 
     Considering these problems, the present invention comprises an insulation structure including a plurality of insulation units of a sphere or hemisphere type, on at least the inner circumference of which a heat reflective film is coated.