JP2005112108A - Heat function structure for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat function structure for an automobile capable of enhancing room temperature amenity. <P>SOLUTION: In the heat function structure for the automobile, a body 50 for partitioning a vehicle room R is divided into two parts, an upper part 52 of the vehicle body and a lower part 53 of the vehicle body making an appropriate horizontal boundary line 51 as a boundary, and a means 61 having a first heat insulation function is provided on the upper part of the vehicle body, and a means 62 having a second heat insulation function different from the means 61 having the first heat insulation function is provided on the lower part of the vehicle body. The boundary line is set to an approximately middle position in a vertical line connecting an upper end of the door panel and a lower end of the side sill with a perpendicular line from the ground surface. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a thermal functional structure for automobiles that can provide a comfortable indoor temperature environment, and in particular, for the purpose of reducing indoor ambient temperature and interior component temperature during parking in hot weather, For the purpose of improvement, the present invention relates to a vehicle body heat insulation system for an automobile that enables heat insulation for maintaining comfort in a vehicle compartment and reduction of a heat load on a human body.

  In summer, light, heat, and heat intrusion paths that are parked under hot weather mainly include windshields, rear glasses, front side glasses, rear side glasses, roofs, and the like. Immediately after parking, the floor receives radiation from the ground surface, and the floor, the lower part of the door structure, the lower part of the dash panel, and the like receive radiant heat.

  In conventional general vehicles, laminated glass is often used for the windshield, and single glass is often used for the front side glass. An interlayer film is used to improve the strength of the glass, but this interlayer film is almost equivalent to having no thermal function. The ceiling is made of a combination of cardboard, non-woven fabric and the like, but the ceiling material having such a structure is almost equivalent to having no thermal function.

Among the vehicles that are actually sold, a small amount of heat insulating material (weight per unit of 0.26 kg / m ² ) is used for the ceiling material, while the glass that is another heat intrusion route is a general ultraviolet cut green glass. There are vehicles that use made laminated glass or single glass (having an absorption function for infrared rays). In such a vehicle, despite the fact that a heat insulating material is used for the ceiling material, it is a fact that a remarkable effect of reducing the indoor temperature at the time of stopping cannot be obtained.

  As described above, when there are two heat intrusion paths into the room and the heat countermeasure is applied only to one of the heat intrusion paths, the effect of the heat countermeasure is reduced when viewed as the entire vehicle. This is because, although the room temperature is lowered by taking a countermeasure on one heat intrusion path, further heat intrusion is caused from the other heat intrusion path on which the countermeasure has not been taken. For example, when two heat intrusion paths into the room are considered, glass and ceiling, when measures are taken only for glass, the amount of heat input from the glass decreases and the room temperature slightly decreases. As is apparent from the thermal resistance value, the amount of heat input from the ceiling increases conversely, and as a result, the decrease in room temperature decreases. On the contrary, the same thing happens when a heat insulating material is used for the ceiling material and no measures are taken on the glass. In this case, since the countermeasure is not taken for the glass whose energy transmission amount is larger than that of the ceiling, the effect of lowering the room temperature becomes smaller. Of course, the same thing can occur except for the combination of glass and ceiling.

  In the conventional vehicle having such a configuration, it is difficult to say that the invasion of heat is sufficiently prevented, and the indoor temperature of the automobile placed in the hot environment is very high. In the measurement example in the summer environment in Japan, the indoor air temperature reaches approximately 70 ° C. in the case of parking. At the same time, the interior interior material temperature rises close to 100 ° C. on the top surface of the instrument panel and close to 70 ° C. on the ceiling. It goes without saying that the passengers feel uncomfortable when riding in such a situation, but even after the ventilation or air conditioner is activated, the temperature of the interior material does not drop easily, and it continues to radiate radiant heat to the occupant for a long time, greatly reducing comfort. ing.

  2. Description of the Related Art In recent years, various heat countermeasures have been proposed to reduce the amount of intrusion heat by shielding light and thermal energy flowing into a room for the purpose of suppressing an increase in indoor temperature and reducing a cooling load. Reducing the indoor thermal load not only reduces occupant discomfort, but also reduces fuel consumption, and further improves fuel economy by reducing the weight of air conditioners. It is done.

  A vehicle with improved heat insulation is disclosed in Patent Document 1 as a heat-insulated automobile. In the heat insulating automobile disclosed in Patent Document 1, since the heat insulating material is installed in every place, it is difficult to meet the recent request to reduce the weight of the vehicle. In addition, since heat intrusion due to heat conduction of the material used as the heat insulating material is not considered, there is a possibility that the effect of lowering the room temperature cannot be sufficiently exhibited.

In addition, Patent Document 2 discloses a technique for improving the heat insulation efficiency by forming a double-structured glass structure to form an air flow passage and venting the air flow passage. However, there is a problem that it is difficult to ensure sufficient strength and rigidity.
Special table 2001-500818 JP-A-5-338428

  The present invention performs optimal material arrangement, and in summer, the indoor temperature decreases when the vehicle stops in hot weather, the temperature load on the human body is reduced, and the load during cooling down in the air conditioner is reduced. It was made for the purpose of reducing the air conditioning load.

  Examples of the heat intrusion path into the room include the roof and windshield described above, the upper part of the door structure, and the pillars of A, B, and C. Since these parts are exposed to the airflow during running, the temperature of the outer surface decreases, and the parts act as a heat release path to the outside of the passenger compartment. However, when parking, the airflow outside the passenger compartment is significantly smaller than when traveling, so the energy absorbed by each part is radiated into the room as far infrared rays, and as a result, the room is warmed. And immediately after boarding, a passenger | crew will be forced too severe temperature environment.

  In addition, the lower part of the vehicle body, such as the lower part of the door structure, the floor, and the lower part of the dash panel, which tends to be shaded when parking, receives intense radiation from the ground immediately after parking in the summer, and heat intrudes into the room. Mouth.

  In winter, it is clear that each part becomes a heat outflow path, that is, a cold intrusion path, contrary to the above.

  In order to solve such problems, the present inventors paid attention when the vehicle is stopped, ascertained the nature of the heat entering the vehicle, and intensively studied a method for preventing the various heat intrusions. The inventors have devised the following invention that can greatly prevent the intrusion of the following.

  In order to achieve the above object, according to the present invention, a vehicle body for defining a compartment is divided into a vehicle body upper part and a vehicle body lower part with a substantially horizontal boundary as a boundary, and the vehicle body upper part has a first heat insulation. The vehicle is a thermal functional structure in which a means having a function is provided, and a means having a second heat insulation function different from the means having the first heat insulation function is provided at a lower portion of the vehicle body.

  According to the present invention, since the passenger compartment is excellent in heat insulation effect, the comfort of passengers can be made comfortable, and the load on the air conditioner during cooling and heating is also reduced, which greatly improves fuel consumption and CO2 emissions. It has the effect of being able to contribute.

  First, a heat transfer mode during parking of a general vehicle will be described. FIG. 1 is a conceptual diagram showing a heat transfer mode when a general vehicle 10 is parked.

  As shown in FIG. 1, in a general vehicle 10, solar radiation 21 is irradiated on the roof 1, and radiant heat 22 enters from the interior side ceiling material, that is, the surface of the headlining 2. Similarly, the upper part 4 of the door is irradiated with solar radiation 21 and radiant heat 22 enters from the surface of the door trim 7. The solar radiation 23 passes through the side glass 3 and is directly irradiated into the passenger compartment R. Radiant heat 24 from the ground is irradiated to the door lower part 5 and the floor 6, and the radiant heat 22 enters from the surfaces of the door trim 7 and the floor carpet 8. The indoor temperature rises due to solar radiation 23, radiant heat 22 and the like entering the room. This phenomenon is repeated with time, and in the indoor temperature distribution, the air temperature above the room becomes very high. Furthermore, since the member temperature at the upper part of the vehicle body becomes very high, heat radiation to the human body due to radiation is large even when the occupant gets in, which is a major cause of discomfort when getting in.

  The operation of the present invention will be described.

  FIG. 2 is a diagram for explaining the thermal functional structure for an automobile according to the present invention, and is a longitudinal sectional view of the vehicle body 50 as viewed from the front.

  The thermal functional structure for automobiles according to the present invention divides a vehicle body 50 for partitioning a vehicle compartment R into a vehicle body upper part 52 and a vehicle body lower part 53 with a substantially horizontal boundary line 51 as a boundary. 52 is provided with means 61 having a first heat insulation function, and the vehicle body lower part 53 is provided with means 62 having a second heat insulation function different from the means 61 having the first heat insulation function.

  The boundary line 51 is set, for example, at a substantially central position 58a on a vertical line 58 connecting the door panel upper end 54 and the side sill lower end 55 with a vertical line 57 from the ground surface 56. Note that the boundary line 51 may be included in either the vehicle body upper part 52 or the vehicle body lower part 53. The number of boundary lines 51 may be one, but a plurality of boundaries may be set in order to define different boundaries between the side of the vehicle body and the front of the vehicle body, for example.

  Regarding the temperature rise of the indoor space when left under the sun, the outer panel surrounding the indoor space is heated by solar radiation or the like, and the temperature of the indoor air is increased by heat conduction, radiation, convective heat transfer, and the like. The inventors paid attention to the temperature behavior of the outer panel in this mechanism. Assuming that it is left in the sun, the time zone during which the temperature rises remarkably reaches the maximum temperature is around 10:00 am to 2:00 pm. It is found that the part where the outer panel acts as the heat input part in this time zone is the part that is exposed to direct sunlight, and the other lower part 53 of the vehicle body has a low temperature and does not act as the heat input part. It was. Therefore, the present invention aims to reduce the room temperature by dividing the vehicle body 50 into the vehicle body upper part 52 and the vehicle body lower part 53 with the boundary line 51 as a boundary, and providing different heat insulation means at each part. Intended.

  Another factor in the rise in room temperature is a path in which light energy transmitted through the window glass such as the windshield, the side glass 3 and the rear glass is absorbed by the interior material and is released into the room as heat energy. In addition to the surface of the instrument panel, the rear parcel shelf, and the like, examples of the target part of this phenomenon include an indoor trim such as a door trim 7 and a cushion of a seat 9. Among these, there is a cushion of the seat seating surface 9a as a part having a great influence on the rise in the room temperature. The position of the seat seat surface 9a varies depending on the shape and form of the vehicle. Automobiles can be classified into sedan, coupe, 1BOX, and other vehicle types based on their vehicle shape. In each vehicle type, the seat seating surface 9a is connected to the door panel upper end 54 and the side sill lower end 55 by a vertical line 57 from the ground surface 56. The vertical line 58 is located at a position 58b at a length ratio of 20 to 60% in the upward direction from the side sill lower end 55 with respect to the entire length of the vertical line 58. The present inventors have found that when the boundary line 51 is set at this position 58b and the vehicle body 50 is divided into the vehicle body upper portion 52 and the vehicle body lower portion 53, the indoor temperature distribution and the heat flow in the entire vehicle are greatly different. . This is considered to be due to the fact that the solar radiation directly hits the outside of the vehicle and heats into the room, and that the part that becomes the heat source in the room serves as a boundary to form the indoor temperature distribution and heat flow.

  Further, the present inventors mainly use sunlight (visible light, near infrared rays) for the heat source that enters from the upper part 52 of the vehicle body, and mainly emit light (far red) from the lower part 53 of the vehicle body. It was found to be outside light).

  Therefore, by dividing the vehicle body 50 into the vehicle body upper part 52 and the vehicle body lower part 53 with reference to the boundary line 51 and providing heat insulation means corresponding to each heat source at each part, the intrusion energy into the room is dramatically reduced. It becomes possible to reduce it. In the present invention, the solar radiation energy received by the vehicle body upper part 52 is insulated by the means 61 having the first heat insulation function, and the radiant energy from the ground surface received by the vehicle body lower part 53 is obtained by the means 62 having the second heat insulation function. Insulation can dramatically reduce the indoor temperature during parking in hot weather in the summer, and can prevent intrusion of cold air and outflow of heating energy in the winter.

  Hereinafter, an embodiment of a thermal functional structure for automobiles according to the present invention will be described.

  FIG. 3 to FIG. 6 are schematic views showing an insulated vehicle to which the automotive thermal functional structure according to the embodiment is applied, respectively, and the vehicle body 50 is shown in a vertical section when viewed from the front. FIG. 3 shows an embodiment in which the means 61 and 62 having the first and second heat insulating functions are constituted by different heat insulating members 63a and 63b, and FIG. 4 shows the means having the first heat insulating function. An embodiment is shown in which 61 is constituted by a reflecting member 64a, and means 62 having a second heat insulating function is constituted by a heat insulating member 63b, and in FIG. 5, the means 61 having a first heat insulating function is changed from the heat insulating member 63a. An embodiment in which the means 62 having the second heat insulating function is configured from the reflecting member 64b is shown, and in FIG. 6, the means 61 and 62 having the first and second heat insulating functions are different from each other in the reflecting member 64a, An embodiment composed of 64b is shown.

  An outline of the thermal functional structure for an automobile according to the embodiment is divided into a vehicle body upper portion 52 and a vehicle body lower portion 53 with a substantially horizontal boundary line 51 as a boundary. The vehicle body upper part 52 is provided with means 61 having a first heat insulation function, while the vehicle body lower part 53 is provided with means 62 having a second heat insulation function different from the means 61 having the first heat insulation function. . The reason why the vehicle body upper part 52 and the vehicle body lower part 53 are divided into the vehicle body upper part 52 and the vehicle body lower part 53 is that the temperature rise of the outer panel is divided into a part with a large temperature rise due to standing in the sun and a part with a small temperature as described above. . The boundary line 51 is set at a substantially central position 58 a in a vertical line 58 that connects the door panel upper end 54 and the side sill lower end 55 with a vertical line 57 from the ground surface 56.

  The vehicle body upper part 52 is on the exterior side, on the roof 1, windshield, side glass 3, rear glass, A / B / C pillars, door upper part 4 located above the boundary line 51, and above the boundary line 51. The upper part of the rear fender located above, the upper part of the rear hatch door located above the boundary line 51 and the like are included. On the interior side, the interior trim (head lining 2, pillar garnish, door trim 7) located above the boundary line 51 is included. Etc.).

  The vehicle body lower portion 53 is on the exterior side, on the floor 6, the door lower portion 5 located below the boundary line 51, the rear fender lower portion located below the boundary line 51, and below the boundary line 51. The lower part of the rear hatch door that is positioned, the lower part of the dash panel that is positioned below the boundary line 51, and the like are included. On the interior side, the interior trim (the lower part of the door trim 7, the floor carpet 8 is positioned below the boundary line 51). Etc.).

  The means 61 and 62 having the first and second heat insulation functions are means having a function of preventing light and heat from entering the passenger compartment R, and from the heat insulation members 63a and 63b or the reflection members 64a and 64b. It is configured. The heat insulating members 63a and 63b and the reflecting members 64a and 64b are arranged on the vehicle body upper portion 52 and the vehicle body lower portion 53 with the role shared by the boundary line 51. Since the vehicle body upper part 52 is provided with the means 61 having the first heat insulation function, the portion with the highest heat input is insulated, and the vehicle body lower part 53 is provided with the means 62 having the second heat insulation function. Radiation energy from the ground surface is also insulated, reducing the amount of heat entering the room as much as possible. As a result, intrusion of light and heat can be prevented efficiently in summer, and furthermore, heat can be prevented from flowing out in winter.

  Moreover, in the general vehicle 10, after the roof 1, window glass, indoor trim, seat 9 and the like absorb solar radiation and the temperature rises, the thermal energy is released into the room by radiation. When an occupant gets in the hot weather, heat energy is radiated to the occupant, creating an uncomfortable feeling when getting in.

  On the other hand, in the thermal functional structure according to the embodiment, the temperature of members such as the roof 1, the window glass, the indoor trim, and the seat 9 that has a particularly great influence on the occupant is lowered, so that heat energy to the occupant is reduced. The radiation of becomes smaller. As a result, it is possible to reduce discomfort during boarding.

  The boundary line 51 has a length ratio in the upward direction from the lower end of the side sill 55 with respect to the entire length of the vertical line 58 in the vertical line 58 connecting the upper end 54 of the door panel and the lower end of the side sill 55 with a vertical line 57 from the ground surface 56. It is more preferable to set the position 58b between 20% and 60%.

  The position 58b of 20% to 60% is determined based on the position of the seat seating surface 9a that greatly affects the room temperature. By setting a boundary line 51 at the position 58b, the vehicle body 50 is This is because the vehicle body upper part 52 and the vehicle body lower part 53, which are greatly different in temperature distribution and heat flow, are preferably divided into two parts so that the heat insulation function can be exhibited more efficiently. The position of the seat seating surface 9a varies depending on the vehicle type. As a typical example, in a general sedan type, it is installed at a position of about 50% in length ratio from the side sill lower end 55 with respect to the entire length of the vertical line 58, and in the 1BOX type, 50%. It is installed at a position of% -60%, and in a sports coupe type, it is installed at a position of 20% -30%. Therefore, in the present invention, the position of the boundary line 51 is set to the position 58b of 20% to 60%. Within this range, a temperature difference appears up and down on the indoor side, that is, the interior side, and this temperature difference is a guideline for selecting or judging an effective means for preventing heat intrusion. In addition, about the position which sets the boundary line 51, there exists the optimal value which was illustrated above for every vehicle type, However, A setting position is not limited for every vehicle type, It can be changed suitably. Not too long.

  The means 61 and 62 having the first and second heat insulation functions are preferably composed of different heat insulation members 63a and 63b (see FIG. 3).

  This is because the means 61 and 62 having the first and second heat insulating functions are constituted by different heat insulating members 63a and 63b, thereby preventing the heat from entering the room and reducing the temperature rise. Further, it is possible to select an effective means for preventing heat intrusion from the main heat source (sunlight) to the upper body 52 and effective for preventing heat intrusion from the main heat source (far infrared light) to the lower body 53. This is because it is possible to select various means.

  It is preferable to use at least one selected from a woven fabric, a nonwoven fabric, a foam material, a vacuum heat insulating material, and a heat absorbing material for the heat insulating members 63a and 63b. This is because heat insulation can be efficiently prevented as an insulated vehicle. Of course, some can be selected and used.

As used herein, the term “heat insulating member” refers to a member made of a heat insulating material having a small thermal conductivity and thermal resistance value. Examples of the heat insulating material include foam materials such as foamed polystyrene and foamed polypropylene, woven fabrics made of felt and polyester, non-woven fabrics, glass wool, and vacuum heat insulating materials. These materials are generally materials having a thermal conductivity of about 0.005 to 0.05 W / (m · k), a thickness of about 5 cm, and a thermal resistance of about 1 to 5 (m ² · k) / W. is there. The heat transfer rate and the thermal resistance value here are values evaluated according to JIS A1412-1.

  It is also preferable to use a fiber heat insulating material made of a thermoplastic resin as the heat insulating material. The thermoplastic resin referred to in the present invention is, for example, aliphatic polyamide such as nylon 66, polyester such as polyethylene terephthalate, polyphenylene sulfide (PPS), polyether ether ketone, polypropylene, etc., and these are used for processing. From the viewpoints of performance, economy, market availability, recyclability and the like. Among these, polypropylene and polyester are more preferable. For example, in polyester, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), polyethylene isophthalate (PEI), In addition to polybutylene isophthalate (PBI), poly ε-caprolacton (PCL), etc., the one obtained by replacing the ethylene glycol component of PET with another different glycol component (for example, polyhexamethylene terephthalate (PHT)), or terephthalic acid Those in which the components are replaced with other different dibasic acid components (polyhexamethylene isophthalate (PHI), polyhexamethylene naphthalate (PHN)), etc. can be used. It does not. As the fiber heat insulating material, a material obtained by fiberizing the above-described thermoplastic resin is used. If any of these is used, there is no problem even if a cross-sectional shape or functional fiber is used, and no limitation is made here. The form can be used regardless of whether it is woven or non-woven. Considering the use in a vehicle, it is preferable to prepare a nonwoven fabric having a desired heat insulating property, mold it with a mold, and use it as a heat insulating material, but there is no particular limitation here.

  It is also preferable to use a foamed resin heat insulating material made of a thermosetting resin as the heat insulating material. When a thermosetting resin is used, it is preferable from the viewpoints of processability, economical efficiency, market availability, and the like for obtaining desired heat insulation performance. Examples of the thermosetting resin here include an epoxy resin, a phenol resin, and a urethane resin. These resins are conventionally known bubble generating means, that is, bubble generating means using a pyrolytic foaming agent, bubble generating means using a volatile solvent, or by absorbing an inert gas in a polymer under high pressure, It is obtained by foam molding using a bubble generating means for foaming with pressure. Moreover, although the structure of these foams is usually an open-cell type, it may be a closed-cell type depending on the use and application location of the foamed sound-absorbing material and the frequency range where sound-absorbing and sound-insulating performance is required. As for the expansion ratio, a value of about 20 to 30 times is usually used, but a value in the range of about 5 to 50 times is also used depending on the weight limit, compression hardness setting, and the like. As with the above-described fiber heat insulating material, if a thermosetting resin is foamed and cured in a mold in a desired shape, it is suitable for use as a vehicle heat insulating material, but there is no particular limitation here. .

It is more preferable to use those heat insulating materials having an apparent density of 2.5 to 100 kg / m ³ and a basis weight of about 0.05 to ² kg / m ² . By setting the apparent density to 2.5 kg / m ³ or more, the specific heat of the heat insulating material increases, and as a result, the amount of transmitted heat decreases and the heat insulating efficiency improves. Moreover, when the apparent density is 100 kg / m ³ or less, the heat conductivity of the heat insulating material can be reduced, and heat conduction hardly occurs, and the heat insulating performance is improved. Similarly, the apparent density can be improved by the amount of transmitted heat and heat conduction within the above range. Here, “apparent density” means the ratio of weight to the outer dimensions of the heat insulating material, and “weight per unit” means the ratio of weight per unit area and does not depend on the thickness. Value. More preferably, by setting the apparent density to 10 to 50 kg / m ³ and the basis weight to be in the range of 0.2 to 1 kg / m ² , further high performance heat insulation can be obtained.

  As the thickness of the heat insulating material, about 5 mm to 50 mm is a good range in both performance and price.

  A vacuum heat insulating material (for example, product name: Vacua manufactured by Matsushita Chiller Co., Ltd.) also has a thermal conductivity of about 0.001 to 0.005 W / (m · k) and is suitable for use in the present invention. It is an example of a heat insulating material.

  Examples of the heat insulating member 63a used for the window glass such as the windshield, the side glass 3, and the rear glass include a heat absorbing material having a function of absorbing heat rays.

  This is because the window glass has a function of absorbing heat rays, so that heat can be prevented from entering the room from the window glass and temperature rise can be reduced.

  Further, “heat ray absorption” here is mentioned as a function of the window glass in order to prevent energy intrusion due to sunlight (sunlight) into the room. The windshield and the front side glass are required to have a visible light transmittance (Tv) of 70% or more among solar radiation components according to the law. A function of absorbing heat rays is used as means for lowering the solar radiation transmittance (Te) within a range not hindering this. Note that this is not the case for the rear side glass and the rear glass.

  “Heat ray absorption” refers to a means of preventing other solar radiation components from being absorbed by the glass while satisfying legal restrictions.

  The values of solar reflectance (Re), solar transmittance (Te), visible light reflectance (Rv), and visible light transmittance (Tv) described in this specification are measured according to JIS R3106. is there.

  Generally used glass can be applied as a material of these window glasses. Of course, it may be transparent, colorless or colored glass. For example, clear glass, green glass, bronze glass, gray glass, blue glass, UV-cut heat insulating glass, heat ray absorbing glass, tempered glass, and the like can be used in combinations within a range that satisfies the above conditions.

  The heat absorbing material having a function of absorbing heat rays includes a film having an infrared absorbing function. A film obtained by kneading a material having a function of absorbing infrared rays into a resin or fixing it to a film surface is used as a film. An infrared radioactive filler is used as a material having a function of absorbing infrared rays.

As infrared radioactive fillers, transition metal element oxide ceramics, natural ores, natural carbides, activated water, and the like are known. Examples of transition metal element oxide-based ceramics include titanium oxide (example: TiO, TiO ₂ ), silicon oxide (example: SiO ₂ ), zirconia oxide (example: ZrO ₂ ), and aluminum oxide (example: Al). ₂ O ₃ ), magnesium oxide (eg: MgO), barium oxide (eg: BaO), manganese oxide (eg: MnO ₂ ), iron oxide (eg: FeO, Fe ₂ O ₃ ), zirconia silicate (Example: ZrSiO ₂ ), Cobalt oxide (Example: CoO), Copper oxide (Example: CuO), Chromium oxide (Example: CrO ₃ ), Titanium nitride (Example: TiN), Zirconia carbide (Example: ZrC) ), titanium carbide (eg: TiC), tin oxide (example: SnO ₂₎ metal oxides such as, nitrides, carbides and fine particles, further neodymium, lanthanum, acid of a rare earth metal such as yttrium In addition, a small amount of silica, alkali metal oxide, alkaline earth metal oxide, Group 8 metal oxide, phosphorus compound and the like may be contained. Known natural ores include mica, trimarine (tourmaline), and auraston. Known natural carbides include those obtained by carbonizing seaweed into fine powder, charcoal represented by Bincho charcoal, carbon black, carbon fiber, and the like.

  Such infrared radioactive filler can efficiently emit infrared rays over a wide wavelength range of 4 to 20 μm or more.

  Among these infrared radioactive fillers, at least one selected from titanium oxide, aluminum oxide, magnesium oxide, and silicon oxide is included. However, there is no particular limitation.

  Next, the means 61 having the first heat insulating function is constituted by the heat insulating member 63a, and the means 62 having the second heat insulating function is constituted by the reflecting member 64b is effective in obtaining the effect as the heat insulating vehicle. Yes (see FIG. 5).

  This is because, by combining the heat insulating member 63a and the reflecting member 64b as a heat insulating vehicle, it is possible to prevent the heat from entering the room and reduce the temperature rise. Further, it is possible to select an effective means for preventing heat intrusion from the main heat source (sunlight) to the upper body 52 and effective for preventing heat intrusion from the main heat source (far infrared light) to the lower body 53. This is because it is possible to select various means.

  As the heat insulating member 63a, a material made of the above-described material is appropriately used.

  It is preferable to use at least one selected from a metal vapor deposition material, an interference reflection material, and a reflective heat insulating material for the reflection member 64b. This is because heat insulation can be efficiently prevented as an insulated vehicle. Of course, some can be selected and used.

  The “reflective member” herein refers to a member made of a reflective material such as a reflective material or a reflective heat insulating material. As the reflective material, a vapor deposition reflective film or an interference reflective film is used.

  A vapor deposition reflective film means what gave the reflective function by vapor-depositing the metal generally used on a resin film. Common metals can be used as the metal constituting the reflective film. Among these, aluminum, silver, zinc, tin, chromium, nickel, titanium, and oxides thereof are preferable. Further, other additive components may be added to these metals to improve optical, chemical, and mechanical properties. By laminating these metals and metal oxides on a resin film and using them as a reflection film, a laminated glass having an arbitrary heat ray reflection performance can be obtained. The resin film here means a film made of a thermoplastic resin generally used as described above. Among them, as a film for depositing the heat ray reflective film used in the laminated glass of the present invention, it is highly transparent, flexible, difficult to break, easy to process, and the heat ray reflective film is continuously formed at a high speed. A polyester film using a polyethylene terephthalate resin that is easy to handle and has high weather resistance and high chemical stability is preferable, and a film having a thickness of 10 μm to 150 μm is more preferable.

In forming the heat ray reflective coating on the surface of the polyester film, a vacuum deposition method is generally used. As an example of the case of the vacuum deposition method, first, the vacuum chamber is set to 1 to 7 × 10 ⁻³ Pa, and the deposition material is deposited on the polyester film at about 20 to 80 ° C. to a predetermined thickness while heating. Instead of the vacuum evaporation method, a sputtering method or an ion plating method can also be used. Alternatively, electroless plating, C.I. U. Method D or C.I. L. It can also be performed by the D method.

The film thickness of the deposited film can be arbitrarily changed in order to give reflection performance. In general, the range of 8 × 10 ⁻² μm to 15 × 10 ⁻² μm is suitable, but is not particularly limited.

  These metal and metal oxide films may be a single layer or a multilayer of two or more layers. For example, when the silver layer is a single layer, a layer composed of tin oxide and zinc oxide as the first layer from the glass substrate side, a silver layer as the second layer, a layer mainly composed of zinc or zinc as the third layer, A layer made of zinc aluminum oxide, tin oxide and zinc oxide may be laminated as the fourth layer. Moreover, the same metal layer may come out repeatedly, such as a silver layer being laminated on the first layer and the third layer. By setting it as such a laminated film, a light interference effect can be acquired also with a vapor deposition film, and visible light transmittance can be increased.

  In addition, the reflective film used for the glass part may be a film in which a metal and / or metal oxide is deposited on the back side of the heat source side glass.

  The interference reflection film refers to a film that causes optical interference and exhibits a reflection function by laminating a plurality of resins having different refractive indexes while controlling the thickness, regardless of metal deposition. By using a multilayer optical interference film, multiple or multiple continuous high-order visible light reflections can be suppressed. The film reflects infrared radiation over a wide bandwidth in the infrared region, is substantially transparent to visible light, and can be shaped or laminated to form a variety of useful articles. It is an improved multilayer optical interference film having many desirable properties, including that it can be made. This film is mainly composed of resin, and the resin used is mainly thermoplastic resin, thermoplastic polyurethane of styrene, methyl methacrylate, acrylonitrile, polycarbonate, polybutadiene, polyethylene-2,6-naphthalate, tetramethylene glycol ether. Etc. are suitable. Copolymers obtained from the above monomers and other polymers are also useful, such as styrene and methyl methacrylate copolymers, styrene and acrylonitrile copolymers, and styrene and butadiene copolymers. Other copolymers include copolycarbonates of 4,4-thiodiphenol and bisphenol A, and copolymers of gluterimide and methyl methacrylate. These resins are appropriately laminated so as to obtain a desired reflection performance and used as a reflection film. For example, the first layer is polystyrene, the second layer is a copolymer of styrene and methyl methacrylate, and the third layer is polymethyl methacrylate. Specific examples of these films include SRF1100 manufactured by Sumitomo 3M Limited.

  By using a film having such a function as an intermediate film for pasting, laminating, or laminated glass on glass, the window glass can have a function of reflecting heat rays, and the reflecting member 64a can be obtained. Here, "heat ray reflection" refers to a means for preventing other solar radiation components from being reflected by the glass while satisfying legal restrictions.

  In order to improve the chemical and mechanical durability of the heat ray reflective plastic film and to facilitate the lamination of the laminated glass, the heat ray reflective plastic film is composed of two polyvinyl butyral and ethylene-vinyl acetate copolymers. It is also possible to be sandwiched between interlayer films made of, for example. And although this flexible laminated body can be pinched | interposed and crimped | bonded between the above-mentioned two glass plates, a laminated glass can also be obtained, but it does not specifically limit here.

  When a film having these functions is used for a glass portion, it can be attached to the surface or sandwiched between at least two pieces of glass and used as a laminated glass.

  Next, the reflective heat insulating material will be described. A typical example of reflective insulation is a so-called thermos double reflecting wall. In other words, the thermos demonstrates overwhelming insulation performance by using the reflecting surfaces plated to face each other to prevent radiant heat transfer between the walls, and at the same time keeping the vacuum in order to prevent convective heat transfer between the walls. It is.

  A reflective heat insulating material means the material which mainly has a reflective function by providing the above-mentioned reflective material on the heat insulating material surface.

  For example, a reflective heat insulating material in which at least two heat ray reflective layers and a spacer for holding a gap between them are fibrous bodies, and fibers of the fibrous body and a part of the inner surface of the heat ray reflective layer are bonded to each other. Can be mentioned. The heat ray reflective layer prevents heat from entering by reflecting solar radiation and radiation. This reflective heat insulating material has at least two heat ray reflective layers. A spacer exists in order to hold | maintain a space | gap between adjacent heat ray reflective layers, and to prevent the heat leak by the contact of heat ray reflective layers. The air gap is indispensable for the reflection of radiation between adjacent heat ray reflective layers and the expression of heat insulation performance by air in the air gap. As the reflective layer used for the reflective heat insulating material, the above-described reflective material or the like is used.

  When combining the heat insulating members 63a and 63b and the reflecting members 64a and 64b as a heat insulating vehicle, the means 61 having the first heat insulating function is composed of the reflecting member 64a, and the second heat insulating function, contrary to the combination described above. Constructing the means 62 having the heat insulating member 63b is also effective in obtaining the effect as a heat insulating vehicle (see FIG. 4).

  By adopting such a configuration, the input amount can be greatly reduced by reflection at the upper body 52 where a large amount of energy is input from solar radiation, and further, the vehicle is stopped at the lower body 53 where radiation is emitted from the ground surface. The effect of delaying the input of the radiant heat 24 can be obtained from a state in which the temperature of the ground surface immediately after is high until the temperature is lowered in the shade and is not easily affected.

  In addition, it is also effective to obtain the effect as a heat insulating vehicle by configuring the means 62 having the first and second heat insulating functions from different reflecting members 64a and 64b (see FIG. 6).

  The vehicle body upper part 52 is configured in the same manner as described above, and the vehicle body lower part 53 is used as a means for reducing the influence of radiation, by reducing the input amount of the radiant heat 24 by a reflecting material, so that the temperature in the passenger compartment R is increased. Can be reduced as much as possible.

  The operation of the insulated vehicle shown in FIGS. 3 to 6 will be described.

  With reference to FIG. 3, in this heat insulation vehicle 11, the means 61 and 62 which have the 1st and 2nd heat insulation function are comprised from different heat insulation members 63a and 63b.

  The heat insulation vehicle 11 is irradiated with solar radiation 21 on the roof 1, but the radiant heat 22 from the surface of the headlining 2 is significantly reduced by laying the heat insulation material 31 (corresponding to the heat insulation member 63 a). Similarly, although the solar radiation 21 is irradiated on the door upper part 4, the radiant heat 22 is significantly reduced from the surface of the door trim 7 by the laying of the heat insulating material 31. The side glass 3 is provided with a heat-absorbing heat insulating material 33 (corresponding to the heat insulating member 63a), so that the solar radiation 23 is prevented from being directly irradiated into the passenger compartment R, and the indoor component of the radiation from the glass. Only enters the room as radiant heat 22. By installing a heat insulating material 32 (corresponding to the heat insulating member 63 b) on the door lower part 5 and the floor 6, the radiant heat 22 is reduced from the surfaces of the door trim 7 and the floor carpet 8 even when receiving the radiant heat 24 from the ground. be able to. As a result, the solar radiation 23, the radiant heat 22 and the like entering the room can be greatly reduced, and the temperature rise of the indoor air is significantly reduced.

  With reference to FIG. 4, in this heat insulating vehicle, the means 61 having the first heat insulating function is constituted by the reflecting member 64a, and the means 62 having the second heat insulating function is constituted by the heat insulating member 63b. .

  The heat insulation vehicle 12 is irradiated with the solar radiation 21 on the roof 1, but the radiant heat 22 to the headlining 2 side hardly penetrates due to the laying of the reflection material 41 (corresponding to the reflection member 64 a), and the vehicle interior R outside. Reflected as reflected light 25. Similarly, although the solar radiation 21 is irradiated on the door upper part 4, the radiant heat 22 to the door trim 7 side hardly penetrates due to the laying of the reflecting material 41, and is reflected as reflected light 25 to the outside of the passenger compartment R. By laying an interference reflection type interference reflection material 43 (corresponding to the reflection member 64a) on the side glass 3, most of the solar radiation 23 is reflected to the outside of the passenger compartment R and directly irradiated into the passenger compartment R. prevent. The lower part is the same as in FIG. In this configuration, there is almost no intrusion heat from the upper part, and the radiant heat 24 from the lower ground also decreases with time from immediately after parking, and as a result, the temperature rise of the indoor air is significantly reduced.

  Referring to FIG. 5, in this heat insulating vehicle, means 61 having the first heat insulating function is constituted by heat insulating member 63a, and means 62 having the second heat insulating function is constituted by reflecting member 64b. .

  The structure of the vehicle body upper part 52 of the heat insulation vehicle 13 is the same as that of FIG. By installing a reflective heat insulating material 42 (corresponding to the reflective member 64b) on the door lower part 5 and the floor 6, even if it receives the radiant heat 24 from the ground, almost no radiant heat 22 is generated from the surfaces of the door trim 7 and the floor carpet 8. Without entering, the radiant heat 24 from the ground is almost reflected outside the passenger compartment R as reflected light 25. As a result, the solar radiation 23, the radiant heat 22 and the like entering the room can be greatly reduced, and the temperature rise of the indoor air is significantly reduced.

  Referring to FIG. 6, in this heat insulating vehicle, the means 61 and 62 having the first and second heat insulating functions are composed of different reflecting members 64a and 64b.

  The structure of the vehicle body upper part 52 of the heat insulation vehicle 14 is the same as that of FIG. 4, and the structure of the vehicle body lower part 53 is the same as that of FIG. Even in such a configuration, the solar radiation 23, the radiant heat 22 and the like entering the room can be significantly reduced as described above, and the temperature rise of the room air is significantly reduced.

  Examples of the thermal functional structure for automobiles for obtaining a larger thermal insulation performance by combining the thermal insulation members 63a and 63b and the reflection members 64a and 64b include the following examples.

(1) Combination using a heat insulating member 63a for the upper body 52 and a heat insulating member 63b for the lower body 53 (see FIG. 3)
Of the upper body 52, a vacuum heat insulating material (approx. 200 to 400 g / m ² ) is used for the roof 1, pillar, door upper 4, and the like, and a glass using a heat absorbing material is used for the window glass. A heat insulating material (about 1000 to 2000 g / m ² ) using a nonwoven fabric is used for the door lower portion 5, the floor 6, and the dash panel lower portion of the vehicle body lower portion 53.

(2) Combination using a reflecting member 64a for the upper body 52 and a heat insulating member 63b for the lower body 53 (see FIG. 4)
Of the upper part 52 of the vehicle body, the roof 1, the pillar, the door upper part 4 and the like are made of a reflective heat insulating material, and the window glass is made of glass using an interference reflection film. A heat insulating material (about 1000 to 2000 g / m ² ) using a nonwoven fabric is used for the door lower portion 5, the floor 6, and the dash panel lower portion of the vehicle body lower portion 53.

(3) Combination using a heat insulating member 63a for the upper body 52 and a reflecting member 64b for the lower body 53 (see FIG. 5)
Of the upper body 52, a vacuum heat insulating material (approx. 200 to 400 g / m ² ) is used for the roof 1, pillar, door upper 4, and the like, and a glass using a heat absorbing material is used for the window glass. A reflective heat insulating material is used for the door lower portion 5, the floor 6, and the dash panel lower portion of the lower body 53.

(4) Combination using a reflecting member 64a for the upper body 52 and a reflecting member 64b for the lower body 53 (see FIG. 6)
Of the upper part 52 of the vehicle body, the roof 1, the pillar, the door upper part 4 and the like are made of a reflective heat insulating material, and the window glass is made of glass using an interference reflection film. Reflectors are used for the door lower portion 5, the floor 6, and the dash panel lower portion of the vehicle body lower portion 53.

  Among these, the efficiency is more excellent, as the reflection member 64a constituting the means 61 having the first heat insulation function (2) above, an interference reflection material is used for the window glass, and reflection heat insulation is used for the other parts. A non-woven fabric is used as the heat insulating member 63b that constitutes the means 62 having the second heat insulating function. This is because the amount of energy entering the passenger compartment R can be efficiently reduced by reflecting the solar radiation energy received by the upper body 52 and insulating the radiation energy from the ground surface. In addition, even with consideration of weight, space, cost, etc., it is possible to prevent the temperature rise in the passenger compartment R most efficiently with the minimum measures, reducing the heat load on the human body, reducing the load on the air conditioner As a result, the fuel efficiency of the vehicle can be improved.

  As shown in FIGS. 7A to 7E, the insulated vehicle having the above-described configuration is suitable for a vehicle type such as a sedan, a compact car, a minivan, a wagon, a coupe, and of course, a light vehicle, SUV, 1BOX, 2BOX, It is also effective for vehicles such as vans and trucks.

  According to the thermal functional structure for an automobile of the present invention, the vehicle body 50 for defining the compartment R is divided into the vehicle body upper part 52 and the vehicle body lower part 53 with a substantially horizontal boundary line 51 as a boundary. The vehicle body upper part 52 is provided with means 61 having a first heat insulation function, whereas the vehicle body lower part 53 is provided with means 62 having a second heat insulation function different from the means 61 having the first heat insulation function. By insulating the solar energy received by the vehicle body upper part 52 by the means 61 having the first heat insulation function, and by insulating the radiation energy from the ground surface received by the vehicle body lower part 53 by the means 62 having the second heat insulation function. The temperature difference between the air temperature in the indoor upper space and the air temperature in the indoor lower space can be reduced, so that the air temperature in the entire room can be lowered.

  EXAMPLES Hereinafter, although an Example and a comparative example are further demonstrated in detail with drawing, this invention is not limited to these Examples.

(Example 1)
In Example 1, the means 61 and 62 having the first and second heat insulating functions are configured from different heat insulating members 63a and 63b (see FIG. 3).

Of the upper body 52, the roof 1 and the door upper 4 are made of polypropylene and polyester fibers (manufactured by Sumitomo 3M Co., Ltd., product name: Thinsulate, main fiber diameter: 10 μm), thickness 2 cm, basis weight 0.4 kg / m. ^Two fiber insulations were installed. For the windshield and the front side glass 3, a laminated glass using a heat ray absorbing film as an intermediate film was prepared and used.

Of the lower part 53 of the vehicle body, the lower part of the door 5, the floor 6, and the lower part of the dash panel are made of a fiber-based heat insulating material made of polypropylene and polyester fibers (main fiber diameter 10 μm) and having a thickness of 5 cm and a basis weight of 1.0 kg / m ^2. installed. Vehicles using these members were created and used for evaluation. A sedan type shown in FIG. 7A was used as the base vehicle.

(Example 2)
In Example 2, the means 61 having the first heat insulating function is constituted by the reflecting member 64a, and the means 62 having the second heat insulating function is constituted by the heat insulating member 63b (see FIG. 4).

Of the upper body 52, the roof 1 and the door upper 4 are made of a polyester film having a thickness of 25 μm and a reflective film obtained by vapor-depositing aluminum on polypropylene and polyester fibers (manufactured by Sumitomo 3M Limited, trade name: synthrate, main fiber). The reflective heat insulating material laminated | stacked on the fiber type heat insulating material with a thickness of 2 cm and a fabric weight of 0.4 kg / m < ² > made from 10 micrometers in diameter) was installed. As the windshield and the front side glass 3, a laminated glass using an interference reflection film (manufactured by Sumitomo 3M Limited, model number: SRF1100) as an intermediate film was used. Other than that, the same vehicle as in Example 1 was prepared and used for evaluation.

(Example 3)
In Example 3, the means 61 having the first heat insulating function is constituted by the heat insulating member 63a, and the means 62 having the second heat insulating function is constituted by the reflecting member 64b (see FIG. 5).

Of the lower part 53 of the vehicle body, the lower part of the door 5, the floor 6, and the lower part of the dash panel are made of a polyester film having a thickness of 25 μm and a reflective film obtained by vapor-depositing aluminum and made of polypropylene and polyester fibers (main fiber diameter 10 μm). A reflective heat insulating material laminated on a fiber-based heat insulating material having a length of 5 cm and a basis weight of 1.0 kg / m ² was installed. Other than that, the same vehicle as in Example 1 was prepared and used for evaluation.

Example 4
In Example 4, the means 61 and 62 having the first and second heat insulating functions were configured from different reflecting members 64a and 64b (see FIG. 6).

Of the lower part 53 of the vehicle body, the lower part of the door 5, the floor 6, and the lower part of the dash panel are made of a polyester film having a thickness of 25 μm and a reflective film obtained by vapor-depositing aluminum and made of polypropylene and polyester fibers (main fiber diameter 10 μm). A reflective heat insulating material laminated on a fiber-based heat insulating material having a length of 5 cm and a basis weight of 1.0 kg / m ² was installed. Other than that, the same vehicle as in Example 2 was created and used for evaluation.

(Example 5)
A vehicle similar to Example 1 was produced and used for evaluation, except that the compact car type shown in FIG.

(Example 6)
A vehicle similar to Example 1 was produced and used for evaluation, except that the minivan type shown in FIG. 7C was used as the base vehicle.

(Example 7)
A vehicle similar to that of Example 1 was produced and used for evaluation except that the wagon type shown in FIG.

(Example 8)
Except for using the coupe type shown in FIG. 7E as the base vehicle, a vehicle similar to that of Example 1 was produced and used for evaluation.

(Comparative Example 1)
Unlike the structures of Examples 1 to 8, a sedan type vehicle shown in FIG. 7A in which neither of the means 61 and 62 having the first and second heat insulating functions is provided was used for evaluation.

(Evaluation methods)
The following measurement and evaluation were performed on the temperature performance in the passenger compartment R of the obtained vehicle.

(Vehicle temperature characteristics)
FIG. 8 is a schematic diagram showing an apparatus for evaluating the heat insulation performance of the examples and the comparative examples. FIG. 9 is a diagram for explaining the temperature measurement position.

As shown in FIG. 8, the amount of sunlight by the sunlamp 100 was set to 1000 W / m ² simulating a hot summer sun. As shown in FIG. 9, the temperature measuring position 101 was set near the head of the driver's seat (around 15 cm forward from the headrest 9b). The temperature at this position was measured using a thermohygrometer (model number: HMP233LD) manufactured by Vaisala and a K-type thermocouple. The outside air temperature of the vehicle was 35 ° C., and the temperature 2 hours after the start of solar light irradiation was used as a result.

  The temperature measurement results are shown in FIG. In the column of the evaluation result in FIG. 10, “温度” is indicated when the temperature of the room temperature is 10 ° C. or more lower than that of Comparative Example 1 as a temperature characteristic, and the decrease width is less than 10 ° C. and 5 ° C. or more. The ones that are present are marked with “○”.

  As shown in FIG. 10, regarding the room temperature, it was found that the temperatures of Examples 1 to 8 were lower by at least 9 ° C. (Example 1) than that of Comparative Example 1. In particular, in Examples 2 and 5-8 in which the means 61 having the first heat insulating function is configured from the reflecting member 64a and the means 62 having the second heat insulating function is configured from the heat insulating member 63b, the temperature is 10 ° C. or higher. A drop could be obtained.

  As described above, the solar radiation energy received by the vehicle body upper part 52 is insulated by the means 61 having the first heat insulation function, and the radiation energy received from the ground surface received by the vehicle body lower part 53 is insulated by the means 62 having the second heat insulation function. The effect which this invention that the indoor air temperature can be lowered | hung by this was confirmed. Furthermore, it has been found that the room temperature can be sufficiently reduced by using the respective means 61 and 62 at the boundary 51 defined by the present invention.

  INDUSTRIAL APPLICABILITY The present invention can be applied to an application for improving the indoor temperature environment when parked under a hot sun.

It is a conceptual diagram which shows the heat-transfer form at the time of parking of a general vehicle. It is a figure which uses for description of the thermal functional structure for motor vehicles concerning the present invention, and is a longitudinal section which looked at the body from the front. It is a schematic longitudinal cross-sectional view which shows the heat insulation vehicle which applied the heat functional structure for motor vehicles based on embodiment, and is a figure which shows embodiment which comprised the means which has a 1st and 2nd heat insulation function from a different heat insulation member. . BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic longitudinal cross-sectional view which shows the heat insulation vehicle to which the heat functional structure for motor vehicles based on embodiment is applied, The means which has a 1st heat insulation function is comprised from a reflective member, and the means which has a 2nd heat insulation function is heat-insulated It is a figure which shows embodiment comprised from the member. It is a schematic longitudinal cross-sectional view which shows the heat insulation vehicle to which the heat functional structure for motor vehicles concerning embodiment is applied, The means which has a 1st heat insulation function is comprised from a heat insulation member, and the means which has a 2nd heat insulation function is reflected It is a figure which shows embodiment comprised from the member. It is a schematic longitudinal cross-sectional view which shows the heat insulation vehicle to which the thermal functional structure for motor vehicles concerning embodiment is applied, and is a figure which shows embodiment which comprised the means which has a 1st and 2nd heat insulation function from a different reflective member. . It is a figure which shows the base vehicle of an Example and a comparative example. It is the schematic which shows the apparatus which evaluates the heat insulation performance of an Example and a comparative example. It is a figure where it uses for description of a temperature measurement position. It is a graph which shows the temperature measurement result of an Example and a comparative example.

Explanation of symbols

1 roof,
2 Headlining,
3 Side glass,
4 Upper door,
5 Lower door,
6 floors,
7 Door trim,
8 Floor carpet,
9 seats,
9a seat surface,
9b headrest,
10 General vehicle,
11, 12, 13, 14 Insulated vehicle,
21 and 23
22 Radiant heat into the room,
24 Radiant heat from the ground,
25 Reflected light,
31 heat insulating material (heat insulating member 63a),
32 heat insulating material (heat insulating member 63b),
33 heat insulating material for glass (heat insulating member 63a),
41 reflective material (reflective member 64a),
42 reflective heat insulating material (reflective member 64b),
43 Interference reflective material for glass (reflective member 64a),
50 body,
51 border,
52 Upper body,
53 Lower body,
54 Upper edge of door panel,
55 Lower side sill,
56 Ground surface,
57 perpendicular,
58 vertical line,
58a substantially central position in the vertical line,
58b A position of 20% to 60% in length ratio from the lower end of the side sill to the full length of the vertical line,
61 Means having a first heat insulating function,
62 Means having a second heat insulating function,
63a a heat insulating member constituting means having a first heat insulating function;
63b a heat insulating member constituting a means having a second heat insulating function;
64a, a reflecting member constituting means having a first heat insulating function,
64b Reflecting member constituting means having a second heat insulating function,
100 artificial solar lights,
R Car cabin.

Claims (13)

  A vehicle body for defining a compartment is divided into a vehicle body upper part and a vehicle body lower part with a substantially horizontal boundary as a boundary, and the vehicle body upper part is provided with means having a first heat insulating function. A thermal functional structure for automobiles, comprising means having a second heat insulation function different from the means having the first heat insulation function.   2. The thermal functional structure for an automobile according to claim 1, wherein the boundary line is set at a substantially central position in a vertical line connecting the upper end of the door panel and the lower end of the side sill with a vertical line from the ground surface.   The boundary line is a vertical line connecting the upper end of the door panel and the lower end of the side sill with a vertical line from the ground surface, and the length ratio is 20% to 60% upward from the lower end of the side sill with respect to the entire length of the vertical line. The thermal functional structure for an automobile according to claim 1, wherein the thermal functional structure is configured as follows.   The thermal functional structure for an automobile according to claim 1, wherein the boundary line is included in either the upper part of the vehicle body or the lower part of the vehicle body.   The thermal functional structure for an automobile according to claim 1, wherein one or a plurality of the boundary lines are set.   The thermal functional structure for an automobile according to claim 1, wherein the means having the first and second heat insulating functions are composed of different heat insulating members. The means having the first heat insulating function is composed of a reflective member,
2. The thermal functional structure for an automobile according to claim 1, wherein the means having the second thermal insulation function includes a thermal insulation member. The means having the first heat insulating function is composed of a heat insulating member,
2. The thermal functional structure for an automobile according to claim 1, wherein the means having the second heat insulating function includes a reflecting member.   The thermal functional structure for an automobile according to claim 1, wherein the means having the first and second heat insulating functions are composed of different reflecting members.   The thermal functional structure for an automobile according to any one of claims 6 to 8, wherein at least one selected from a woven fabric, a nonwoven fabric, a foam material, a vacuum heat insulating material, and a heat absorbing material is used for the heat insulating member. .   The thermal functional structure for an automobile according to any one of claims 7 to 9, wherein at least one selected from a metal vapor deposition material, an interference reflective material, and a reflective heat insulating material is used for the reflective member. As the reflection member constituting the means having the first heat insulation function, an interference reflection material is used for the window glass, and a reflection heat insulation material is used for the other parts.
As the heat insulating member constituting the means having the second heat insulating function, a non-woven fabric is used,
The thermal functional structure for an automobile according to claim 8, wherein the amount of energy entering the vehicle interior is reduced by reflecting solar radiation energy received on the upper part of the vehicle body and insulating the radiation energy from the ground surface. A vehicle body for defining a compartment is divided into a vehicle body upper part and a vehicle body lower part with a substantially horizontal boundary as a boundary, and the vehicle body upper part is provided with means having a first heat insulating function. Is provided with means having a second heat insulating function different from the means having the first heat insulating function,
An automotive vehicle that insulates the solar radiation energy received by the upper part of the vehicle body by the means having the first thermal insulation function and that insulates the radiant energy received by the lower part of the vehicle body by the means having the second thermal insulation function. Thermal functional structure.