JP2003145661A - Light shielding member - Google Patents

Abstract

(57) [Problem] To provide a light-shielding member capable of effectively suppressing a rise in room temperature, and to enhance the degree of freedom of the color tone of the surface. A design layer (12) having an absorptance of 50% or less with respect to light having a wavelength of 800 to 1400 nm;
Reflective layer 1 having a reflectance of 80% or more for 400 nm light
4 is formed on at least a part of the laminate so that the reflection layer is on the inside. In particular, it reflects near-infrared rays, has a small absorption, and can remarkably suppress temperature rise. Moreover, the color tone of the surface, particularly the degree of freedom of lightness, is high, and it can be harmonized with, for example, the color of the inner wall and furniture such as furniture.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a light-shielding member capable of shielding sunlight and suppressing a rise in room temperature by being applied to, for example, a curtain and the like, and having a high degree of freedom in color tone. is there.

[0002]

2. Description of the Related Art Generally, a glass window of each room such as a building is provided with a light blocking member for blocking sunlight. Examples of such a light shielding member include a cloth or sheet-shaped plastic curtain, a blind in which metal or plastic strips (slats) are juxtaposed, a roll-up curtain capable of accommodating a cloth or plastic sheet in a roll shape, and the like. Can be mentioned. However, even if sunlight is blocked by such a light blocking member, room temperature rise is inevitable, and in particular,
The use of air conditioning equipment is essential in the summer. In order to further suppress such a rise in room temperature, it is effective to use a light-shielding member having high brightness. For example, light beige, blue and green are preferable. This is because if such a color scheme is applied, the reflectance of near-infrared rays, which is the main cause of temperature rise, is high, and the rise in room temperature can be suppressed.

[0003]

However, it is very inconvenient that the colors of light-shielding members such as curtains and blinds are limited. In order to improve indoor comfort, for example, the color of the inner wall and harmony with furniture and other furniture are important, and the color of light-shielding members such as curtains with a relatively large area is restricted. If so, the color harmony will be impaired. However, if priority is given to color harmony to improve comfort, curtains or the like with low lightness may be used. As a result, the effect of suppressing the rise in room temperature becomes smaller, the frequency of use of cooling equipment and the like increases, the amount of energy used increases, and it is not preferable in terms of global environment protection.

The present invention has been made in order to solve the above-mentioned problems, and an object thereof is to provide a light-shielding member capable of effectively suppressing an increase in room temperature, which can increase the degree of freedom in color tone of its surface.

[0005]

The light shielding member of the present invention comprises a design layer having an absorption rate of 50% or less for light having a wavelength of 800 to 1400 nm and a reflection layer having a reflectance of 80% or more for light having a wavelength of 800 to 1400 nm. A laminate having layers is formed at least in part so that the reflective layer is on the inside. Here, the design layer is made of a resin composition containing a pigment, and the pigment preferably has an absorption rate of 20% or less with respect to light having a wavelength of 800 to 1400 nm. At this time, the design layer and the reflection layer are
Each consisting of a resin composition containing a pigment, the pigment concentration of the design layer is lower than the pigment concentration of the reflective layer, or
It is desirable that the thickness of the design layer is thinner than the thickness of the reflection layer.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The light shielding member of the present invention is characterized in that a specific laminated body is formed. Here, the light shielding member refers to various members used for shielding light such as sunlight, particularly light including near infrared rays. For example, a curtain or a blind attached to a glass window or the like may be used. Examples of the curtain include cloth or sheet-shaped plastic, and a roll-up curtain in which the cloth or plastic sheet can be stored in a roll shape. In addition, the blind includes a strip (slat) made of metal or plastic. In the light-shielding member of the present invention, the specific laminated body may be formed on at least a part of the entire surface or one surface of the light-shielding member, a part of one surface, or the like. It is important that the portion to be irradiated is formed so that the temperature suppressing effect can effectively function. For example, in a curtain or a blind, if the window side surface and the indoor side surface may have different color tones, it may be formed only on the window side surface into which sunlight is inserted.

The specific laminate in the present invention has at least a design layer and a reflection layer. For example, as shown in FIG. 1, a design layer 12 and a reflective layer 14 are formed on a constituent material of a light-shielding member, for example, a base material 10 which is a cloth of a curtain or a slat of a blind. The design layer in the present invention determines the color tone that appears on the surface of the light shielding member, and is colored according to the required pattern, color tone and the like. However, in the present invention, this design layer has a wavelength of 80 which greatly contributes to heat generation.
It is necessary that the absorptance for light of 0 to 1400 nm is 50% or less. With such a specific design layer, most of the near-infrared rays pass through the design layer and are not affected by visible light, so that the surface appearance is not restricted. When the absorptance is 50% or less, the heat absorption of the light shielding member can be suppressed and the temperature rise can be reduced. The smaller the absorption rate, the better. A resin composition containing a resin component and a pigment can be applied to such a design layer. As the resin component, various varnishes (oil varnish and / or alcoholic varnish), paint resins, general-purpose plastics, engineering plastics, etc. can be used, but in any case, it is important that the absorption of near infrared rays is small. Is. Regarding the resin component, the wavelength is 800 to 140.
The absorptance for 0 nm light is preferably 10% or less. Incidentally, "absorption rate of resin component" in the present specification
Is a numerical value obtained by forming a film having a thickness of 20 μm with this resin component and measuring the absorptance with respect to light having a wavelength of 800 to 1400 nm.

Examples of paint resins include alkyd resins,
Phthalic acid resin, vinyl resin, acrylic resin, fluororesin, polyamide resin, unsaturated polyester resin, chlorinated polyolefin resin, amino resin, polyurethane resin,
Silicone resin, silicon resin, acrylic silicone resin, silicone acrylic resin, xylene resin, petroleum resin, ketone resin, liquid polybutadiene, rosin-modified maleic acid resin, coumarone resin, ethyl silicate, powder coating resin, UV curing resin, epoxy Resin, olefin resin, phenol resin, etc. may be mentioned. Water-soluble resins can also be used. Among these, acrylic resins, polyurethane resins, acrylic silicone resins, silicone acrylic resins, silicone resins, and fluororesins are particularly preferable because they absorb little infrared rays and have excellent dispersibility of infrared transmitting pigments. Further, as general-purpose or engineering plastics, polyethylene resin, ethylene vinyl acetate copolymer resin, polypropylene resin, polystyrene resin, AS resin, ABS resin, methacrylic resin, polyvinyl chloride resin, polyamide resin, polycarbonate resin, polyethylene terephthalate resin, poly Butylene terephthalate resin, diallyl phthalate resin,
Urea resin, melamine resin, xylene resin, phenol resin, unsaturated polyester resin, epoxy resin, furan resin, polybutadiene resin, polyurethane resin, melamine phenol resin, chlorinated polyethylene resin, vinylidene chloride resin, acrylic vinyl chloride copolymer resin, AAS Resin, ACS resin, polyacetal resin, polymethylpentene resin, polyphenylene oxide resin, modified PPO resin, polyphenylene sulfide resin, butadiene styrene resin, polyaminobismaleimide resin, polysulfone resin, polybutylene resin, silicon resin, polytetrafluoroethylene resin , Polyfluoroethylene propylene resin, perfluoroalkoxy fluoroplastic, polyvinylidene fluoride resin, MBS resin, methacryl-styrene resin, polyimide resin Polyarylate resins, polyallyl sulfone resins, polyether sulfone resins, polyether ether ketone resins. Among these, ABS resin, polycarbonate resin, unsaturated polyester resin, polypropylene resin, modified PPO resin, polyamide resin and the like are particularly preferable because the pigment is easily dispersed therein.

As the pigment contained in the design layer, either an inorganic pigment or an organic pigment can be used. As the inorganic pigments, iron oxide pigments, titanium oxide pigments, complex oxide pigments, titanium oxide-coated mica pigments, iron oxide-coated mica pigments, scaly aluminum pigments, zinc oxide and the like can be used.
As organic pigments, copper phthalocyanine pigments, dissimilar metals (nickel, cobalt, iron, etc.) phthalocyanine pigments,
Metal-free phthalocyanine pigment, chlorinated phthalocyanine pigment, chlorine / brominated phthalocyanine pigment, brominated phthalocyanine pigment, anthraquinone pigment, quinacridone pigment, diketopyrrolopyrrole pigment, perylene pigment, monoazo pigment, disazo pigment, condensation Azo pigments, metal complex pigments, quinophthalone pigments, indanthrene blue pigments, dioxazine violet pigments, anthraquinone pigments, metal complex pigments, benzimidazolone pigments and the like can be used. In addition to these, pigments having a small infrared absorption can be used. In particular, in the case of developing a dark color tone, as a black pigment replacing carbon black, an azomethine organic pigment such as a product name "A-1130 Black" manufactured by Dainichi Seika Kogyo Co., Ltd. or a product name "Perylene Black S" manufactured by BASF. A perylene-based pigment such as "-0084" is suitable, and these are used alone or after being mixed with other pigments and dispersed in a resin component. The content of these is preferably 0.01 to 80% by weight, and more preferably 0.1 to 30% by weight. The pigment used in the design layer preferably has an absorptance of 20% or less for light having a wavelength of 800 to 1400 nm in order to make the absorptivity of the design layer for near infrared rays 50% or less. It is desired that this absorption rate be smaller. The "absorption rate of the pigment" as used in the present specification is obtained by dispersing 5% by weight of the pigment in an acrylic resin which is a resin for paint to prepare a film having a thickness of 20 µm, and measuring a wavelength of 8
It is a numerical value obtained by measuring the absorptance with respect to the light of 00 to 1400 nm. The content of the pigment is preferably 5 to 80% by weight, more preferably 10 to 30% by weight. When the amount of pigment is large, the amount of near-infrared rays hardly penetrates the design layer and the amount of near-infrared rays absorbed by the design layer increases, while when the amount of pigment is small, it is possible to sufficiently develop the desired color. Because it will be difficult. The average particle size of the pigment is preferably 0.01 to 30 μm, more preferably 0.05 to 1 μm. Within this range, the dispersibility is also good. The design layer is not limited to a single layer, and may be composed of two or more layers, for example, a transparent layer that mainly functions as a protective function and a layer that has a high coloring material concentration and a high visible light reflectance. Good.

The reflective layer in the present invention has a wavelength of 800 to
The higher the reflectance for 1400 nm light, the more desirable
It should be 80% or more. The reflective layer has a transmittance of 2 to near infrared rays having a wavelength of 800 to 1400 nm.
It is preferably 5% or less. More preferably 10%
It is the following. The reflectance, the transmittance, and the absorptance mean numerical values measured for the entire layer, and those measurements can be performed using, for example, an automatic recording spectrophotometer "U-4000" manufactured by Hitachi, Ltd. The reflectance is measured, for example, at 5 °
It can be performed under the condition of specular reflection.

As the reflective layer, a layer formed of a resin composition containing an infrared reflective pigment having a property of efficiently reflecting near infrared rays and efficiently emitting far infrared rays as a coloring component is preferable. The resin component used for the reflection layer is preferably as low as the absorption rate of near infrared rays, and like the design layer described above, various varnishes (oil varnish and / or alcohol varnish), paint resins, general-purpose plastics, engineering plastics, etc. Can be used. As the infrared reflective pigment, iron oxide pigment, titanium oxide pigment, complex oxide pigment, titanium oxide-coated mica pigment, iron oxide-coated mica pigment,
1 selected from scaly aluminum pigment, zinc oxide, etc.
One kind or two or more kinds can be used. Furthermore, as organic pigments, copper phthalocyanine pigments, dissimilar metal (nickel, cobalt, iron, etc.) phthalocyanine pigments, metal-free phthalocyanine pigments, chlorinated phthalocyanine pigments, chlorine / brominated phthalocyanine pigments, brominated phthalocyanine pigments, anthraquinone pigments, quinacridone Pigments, diketopyrrolopyrrole pigments, perylene pigments, monoazo pigments, disazo pigments, condensed azo pigments, metal complex pigments, quinophthalone pigments, indanthrene blue pigments, dioxazine violet pigments, anthraquinone pigments , Metal complex pigments, benzimidazolone pigments and the like can be used. In addition to these, pigments having a small infrared absorption can be used. Among these, titanium oxide is particularly preferable in terms of reflection performance and cost. The infrared reflective pigment may include an azomethine organic pigment such as "A-1130 Black" manufactured by Dainichiseika Co., Ltd., or a perylene-based pigment such as "Perylene Black S-0084" manufactured by BASF. Good. The content of the pigment in the reflective layer is 5 to 8
It is preferably 0% by weight, more preferably 10 to 80% by weight, further preferably 40 to 80% by weight. The average particle size of the pigment in the reflective layer is preferably 0.01 to 100 μm, more preferably 0.1 to 25 μm. In particular, when titanium oxide is used, its particle size is preferably in the range of 0.05 to 1 μm from the viewpoint of reflection performance. When titanium oxide is used for the reflective layer, a higher reflectance can be obtained by further mixing a scaly aluminum pigment, a mica pigment or the like. The reflective layer is not limited to a single layer, but may be two or more layers.

When the design layer and the reflection layer are each made of a resin composition containing a pigment, the pigment concentration of the design layer is preferably lower than the pigment concentration of the reflection layer. Regarding the pigment per unit area, if the pigment concentration in the design layer is high,
This is because the amount of near infrared rays absorbed in the design layer increases and it becomes difficult to improve the effect of suppressing the temperature rise. Further, it is desirable that the pigment in the design layer is 30% by weight or less and the pigment in the reflection layer is 40% by weight or more. In order to satisfy this requirement, the pigment concentration in each layer may be set within the range, or even if the pigment concentration in each layer is the same, adjustment may be performed by changing the layer ratio. That is, the design layer and the reflection layer are each made of a resin coating film containing a pigment, and it is desirable that the thickness of the design layer is thinner than the thickness of the reflection layer. For example, even if the pigment concentration in each layer is the same, if the thickness of the design layer is half the thickness of the reflective layer, the amount of pigment per unit area will be half. Therefore, not only the concentration difference,
It is also desirable that the thickness of the design layer be equal to or less than the thickness of the reflective layer.

In the design layer and the reflection layer, carbon black strongly absorbs near-infrared rays having a wavelength of 800 to 1400 nm, which greatly contributes to heat generation, among infrared rays contained in sunlight. The absorption of can be suppressed. That is, the smaller the content of carbon black, the less the infrared absorption, and the content of carbon black is preferably 0.05% by weight or less, more preferably 0% by weight. In the design layer and the reflection layer, if necessary,
The gloss may be adjusted by adding an extender pigment having infrared reflectivity such as silica, magnesium silicate, or calcium carbonate. The content of extender pigment is not limited, but may be 25 in each layer.
It is preferably not more than weight%.

The design layer and the reflection layer are formed by coating and spraying a resin composition used as a paint to form a coating film, or by laminating a film formed by various forming means. It may be one that has been made. In the case of forming it as a paint, in order to facilitate the coating operation, it may be diluted with a suitable solvent such as an organic solvent, water, or a mixture of water and an organic solvent to be a liquid, or in the form of a powder. Good. Moreover, you may add a dispersing agent and a dispersing aid to a solvent as needed. Further, the layer formed on the surface of the light shielding member is not limited to the design layer and the reflection layer described above, and other layers may be provided within the range not departing from the gist of the present invention. For example, as shown in FIG. 1, an undercoat layer 16 or the like may be formed inside the reflective layer 14 in order to bring the reflective layer into close contact.

The reflective layer may be a molded product made of the above-mentioned resin, or a functional component molded with a resin. Further, the reflective layer may be formed by forming a metal film. The metal film can be formed by plating, sputtering, vacuum deposition, ion plating or the like.

In the present invention, the laminate having the design layer and the reflective layer is formed on the light-shielding member. At that time, the reflective layer is on the inner side, that is, on the side closer to the fabric or slats constituting the light-shielding member. A reflective layer is provided so that the design layer is located outside, and only external light such as sunlight passes through the design layer and reaches the reflective layer.

In the case of the light-shielding member having such a laminated body of two or more layers, the near-infrared rays that have passed through the design layer exhibiting the color-developing function of visible light are reflected by the reflection layer thereunder, and again. Since it passes through the design layer and escapes to the outside, near-infrared rays do not enter the room, and there is little absorption by the light shielding member,
It is possible to suppress the temperature rise in the room or the like that is shielded by the light shielding member. Further, by selecting a pigment having a desired color from the above-mentioned pigments as the pigment of the design layer and applying a pigment satisfying the requirements of the present invention, it is possible to impart necessary coloring and designability. That is, the lower layer mainly obtains an infrared reflecting effect, while the upper layer improves the design. Further, since the lower reflection layer is protected by the upper layer, a stable infrared reflection function can be maintained for a long time.

Therefore, according to the present invention, in summer and the like,
Since the temperature increase of the light shielding member or the room due to the near infrared rays contained in the sunlight is suppressed, the frequency of use of the cooling equipment and the like can be reduced and energy saving can be achieved. Further, even in a room where it is difficult to control the room temperature due to the use of cooling equipment or the like at all times, the rise in the room temperature can be suppressed, so that it is possible to install, for example, precision equipment that is weak against heat.

[0019]

EXAMPLE A A blind was manufactured by using a blind slat as a substrate and sequentially laminating an undercoat layer 16, a reflective layer 14, and a design layer 12 on a substrate 10 as shown in FIG. . The slats are made of aluminum alloy, and the undercoat layer 16 is made of epoxy resin paint and has a thickness of 30μ.
m. The reflective layer 14 has a thickness of 30 μm, the design layer 12 has a thickness of 20 μm, and pigments are added to acrylic silicone resin in various formulations to form a coating film made of a resin composition as shown in Table 1. The color tone from the surface was dark brown (Munsell value: 5YR3 / 2). The spectral reflection spectrum of this slat was measured (Hitachi Spectrometer "U-4100"). For comparison, the same slat was used to form a coating film (thickness: 30 μm) made of the resin composition shown in Table 2 on the undercoat layer 16 by adding a pigment to an acrylic resin, and the same color tone was obtained. Was manufactured (Comparative Example A) and measured in the same manner. The measurement results are shown in FIG. From FIG. 2, the blind of Comparative Example A has a reflectance of 10% or less from the visible light region to the entire near-infrared region. On the other hand, in the case of the blind of Example A, although the reflectance was 10% or less in the visible light region as well, the reflectance sharply increased in the near infrared region of more than 700 nm and the high reflectance up to around 2600 nm. It is exerting its rate. Then, in the blinds of Example A and Comparative Example A, the room temperature rise could be suppressed by using the blind of Example 1 although the color tone produced was dark brown with low lightness.

[0020]

[Table 1]

In Tables 1 and 2, the absorptance and reflectance are at wavelength 800
The absorptance and reflectance for light of ˜1400 nm are shown.

[0022]

[Table 2]

[Examples 1 to 10] Blind slats were used as the substrate, and as shown in FIG.
A blind was manufactured by sequentially laminating the undercoat layer 16, the reflective layer 14, and the design layer 12. The slats are made of aluminum alloy, and the undercoat layer 16 is made of epoxy resin paint and has a thickness of 30 μm. The reflective layer 14 has a thickness of 30 μm, the design layer 12 has a thickness of 20 μm, and various coating pigments are added to acrylic silicone resin to form a coating film made of the resin composition shown in Table 1. The color tone was set to be one shown in Table 3. Temperature changes were measured using each blind. For comparison, a blind was produced in the same manner except that various kinds of pigments were added to the acrylic resin to form a coating film (thickness: 30 μm) made of the resin composition shown in Table 2. It measured similarly. For the measurement, as shown in FIG. 3, there is a glass window 24 on the south side and a corridor on the north side.
I used 2. Each test chamber 20, 22 has a depth of 5.3.
It is m, 6.8 m wide, and has a ceiling height of 2.5 m, and is separated by gypsum board walls. The glass window 24 has a height of 1.
It is 5 m wide and 6.5 m wide, and the lower end is at a height of 0.6 m above the floor. In one test chamber 20, as shown in FIG. 4, each of the three blinds 26 of Examples 1 to 10 was used.
Is arranged adjacent to the inside of the glass window 24 so that the sunlight is sufficiently irradiated, and in the other test chamber 22, Comparative Examples 1 to 1 are provided.
Each of the 10 blinds was similarly deployed. The test was carried out from 10 am to 2 pm in fine weather in the Kanto area in the middle of October. The maximum temperature of the outer surface of the blind and the room temperature at the center of each test chamber are shown in Table 3.

[0024]

[Table 3]

From Table 3, in the comparative example, the blind surface temperature reaches 51 ° C. or higher and the room temperature reaches 39 ° C. or higher. However, in this embodiment, the blind surface temperature is 8 to 22 ° C. higher than that. The temperature is kept low at 46 ° C or lower, and the room temperature can be reduced to 38 ° C or lower. Also, not only limited color tone,
It can be seen that near-infrared rays are reflected in various color tones from dark to light, and the rise in surface temperature can be suppressed. In particular, this is remarkable when the color tone of the blind is dark, and the blind surface temperature in this example is 18 to 22 ° C. lower than the blind surface temperature in the comparative example. Further, in the comparative example, the surface temperature is increased by 8 to 12 ° C. by changing the light color from the dark color to the dark color of the same type, whereas in the present example, the dark color is changed to the dark color. The temperature rise is reduced below 4 ° C.

[Examples 21 to 26] Various roll screens were produced in the same manner as in Example 1 except that a PET roll screen was used instead of the blinds, and the temperature change was measured in the same manner as above. went. Example 2
The coating films used in Examples 1 to 23 (Comparative Examples 21 to 23) are the coating films used in Examples 1 to 3 (Comparative Examples 1 to 3), and Examples 24 to 26 (Comparative Examples 24 to 26). The coating films used in Example 2 are the coating films used in Examples 6 to 8 (Comparative Examples 6 to 8). The measurement results are shown in Table 4.

[0027]

[Table 4]

From Table 4, in the comparative example, the screen surface temperature reaches 50 ° C. or higher and the room temperature reaches 38 ° C. or higher. However, in this embodiment, the screen surface temperature is 10 to 20 ° C. higher than that. Even lower than 45 ℃, room temperature is 37 ℃
It can be reduced to the following. Further, it is understood that not only limited color tones but also various tones from dark to light tones reflect near-infrared rays and an increase in surface temperature can be suppressed. In particular, this is remarkable when the color tone of the blind is dark, and the blind surface temperature in this example is 17 to 19 ° C. lower than the blind surface temperature in the comparative example. Further, in the comparative example, the surface temperature is increased by 9 to 13 ° C. by changing the light color from the dark color to the dark color of the same type, whereas in the present example, the dark color is changed to the dark color. The temperature rise is reduced to 2-3 ° C. Therefore, it can be seen that the light-shielding member of the present invention is excellent in the effect of suppressing the temperature rise even if it shows a color tone with low lightness regardless of the material of the substrate.

[0029]

The light-shielding member of the present invention reflects near-infrared rays, absorbs little infrared rays, and significantly suppresses temperature rise.
Moreover, the degree of freedom of the color tone of the surface, especially the brightness is high, and it can be matched with the color of the inner wall and the furniture such as furniture. Therefore, according to the present invention, it is possible to suppress the use of cooling equipment, save energy, and protect the global environment, and improve comfort caused by color tone and the like.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a part of a light shielding member of the present invention.

FIG. 2 is a spectral reflection spectrum diagram showing the relationship between wavelength and reflectance for Example A and Comparative Example A.

FIG. 3 is a plan view showing a test chamber used for measurement in Examples and Comparative Examples.

FIG. 4 is a front view showing a test chamber used for measurement in Examples and Comparative Examples, as viewed from the inside of the room as viewed from the glass window direction.

[Explanation of symbols]

10 Base 12 Design layer 14 Reflective layer 16 Undercoat layer

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Taketoshi Matsuura             2-1-1, Nishishinjuku, Shinjuku-ku, Tokyo             Nutty Advance Technology Co., Ltd.             Inside the company (72) Inventor Sugo Sugawa             2-1-1, Nishishinjuku, Shinjuku-ku, Tokyo             Nutty Advance Technology Co., Ltd.             Inside the company F-term (reference) 2E182 AA01 AB01 AB03 AB06 CC04                       CC14                 4F100 AK01A AK01B AK25A AK25B                       AR00B BA02 BA16 BA27                       CA13A CA13B GB08 HB00A                       JN02 JN06B JN30A YY00A                       YY00B

Claims (4)

[Claims] 1. A design layer having an absorption rate of 50% or less for light having a wavelength of 800 to 1400 nm, and a wavelength of 800 to 140.
A light-shielding member, characterized in that a laminate having a reflective layer having a reflectance of 0% or more for 0 nm light is formed at least in part so that the reflective layer is inside. 2. The light shield according to claim 1, wherein the design layer is made of a resin composition containing a pigment, and the pigment has an absorptance of 20% or less for light having a wavelength of 800 to 1400 nm. Element. 3. The design layer and the reflection layer are each made of a resin composition containing a pigment, and the pigment concentration of the design layer is lower than the pigment concentration of the reflection layer. Light-shielding member. 4. The design layer and the reflection layer are each made of a resin composition containing a pigment, and the thickness of the design layer is smaller than the thickness of the reflection layer.
The light-shielding member according to any one of 1.