Non-contact communication media

Abstract

Improve the heat resistance of non-contact communication media. [Solution] A contactless communication medium (100) according to one embodiment of the present disclosure includes a housing (2) having an internal storage space (24), an RFID tag (1) located in the storage space (24), and a base (3) on which the housing (2) is placed. The base (3) has a main body (31) and at least three legs (32) that come into point contact with an object (4) to be heated.

Description

[Technical Field]

[0001] The present disclosure relates to contactless communication media. [Background technology]

[0002] BACKGROUND ART Conventionally, a technique is known in which a non-contact communication medium such as RFID (Radio Frequency Identification) is mounted on an item in order to identify the item. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5113808 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the above-mentioned conventional techniques have room for improvement in terms of improving the heat resistance of the non-contact communication medium when the temperature of the article is, for example, 500° C. or higher.

[0005] The present disclosure provides a technique that can improve the heat resistance of a non-contact communication medium. [Means for solving the problem]

[0006] A non-contact communication medium according to one embodiment of the present disclosure includes a housing having an internal storage space, an RFID tag located in the storage space, and a base on which the housing is placed. The base has at least three legs that are in point contact with a heated object. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to improve the heat resistance of a non-contact communication medium. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a cross-sectional view showing an example of a non-contact communication medium according to the first embodiment. [Figure 2] FIG. 2 is a plan view showing an example of a contactless communication medium according to the first embodiment. [Figure 3] FIG. 3 is an enlarged cross-sectional view showing an example of the base according to the first embodiment. [Figure 4] FIG. 4 is an enlarged cross-sectional view showing an example of a base according to the second embodiment. [Figure 5] FIG. 5 is an enlarged cross-sectional view showing an example of a base according to the third embodiment. [Figure 6] FIG. 6 is an enlarged cross-sectional view showing an example of a base according to the fourth embodiment. [Figure 7] FIG. 7 is a plan view showing an example of a base according to the fourth embodiment. [Figure 8] FIG. 8 is an enlarged cross-sectional view showing a first modified example of the base according to the fourth embodiment. [Figure 9] FIG. 9 is an enlarged cross-sectional view showing a second modified example of the base according to the fourth embodiment. [Figure 10] FIG. 10 is an enlarged cross-sectional view showing an example of a base according to the fifth embodiment. [Figure 11] FIG. 11 is a plan view showing an example of a base according to the fifth embodiment. [Figure 12] FIG. 12 is a cross-sectional view showing an example of a contactless communication medium according to the sixth embodiment. [Figure 13] FIG. 13 is a cross-sectional view showing an example of a non-contact communication medium according to the seventh embodiment. [Figure 14] FIG. 14 is a cross-sectional view showing an example of a contactless communication medium according to the eighth embodiment. [Figure 15] FIG. 15 is a cross-sectional view showing another example of the non-contact communication medium according to the eighth embodiment. [Figure 16] FIG. 16 is an enlarged cross-sectional view showing an example of the H1 portion in FIG. [Figure 17] FIG. 17 is a cross-sectional view showing another example of the non-contact communication medium according to the eighth embodiment. [Figure 18]FIG. 18 is a cross-sectional view showing an example of a non-contact communication medium according to the ninth embodiment. [Figure 19] FIG. 19 is a cross-sectional view showing an example of a non-contact communication medium according to the tenth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a mode for carrying out a contactless communication medium according to the present disclosure (hereinafter referred to as an "embodiment") will be described in detail with reference to the drawings. Note that the present disclosure is not limited to the embodiment. Furthermore, each embodiment can be appropriately combined within the scope of not causing a contradiction in the processing content. Furthermore, the same components in each of the following embodiments will be given the same reference numerals, and duplicated explanations will be omitted.

[0010] In addition, in the drawings referred to below, for ease of understanding, an orthogonal coordinate system may be shown in which the X-axis, Y-axis, and Z-axis directions are defined as being perpendicular to each other, and the Z-axis direction is the vertically upward direction.

[0011] Conventionally, a technology for identifying an item has been known in which a non-contact communication medium such as RFID (Radio Frequency Identification) is mounted on the item. In particular, in an environment exposed to high temperatures such as a production process, a non-contact communication medium with excellent heat resistance is used.

[0012] For example, Patent Document 1 discloses an RFID tag that includes a tag body surrounded by a thermal insulator, a thermal suppression member disposed between a heating object such as a heating furnace and the thermal insulator, and a support member that contacts the thermal suppression member and the heating object. With this RFID tag, heat conducted from the heating object via the support member is dissipated from a part of the thermal suppression member, thereby suppressing a temperature rise in the tag body.

[0013] However, in the above-mentioned technology, heat from the heating object is likely to be conducted to the tag body via the connection between the heating object and the support member, so there is room for further improvement in the above-mentioned technology in terms of improving the heat resistance of RFID tags.

[0014] First Embodiment First, the configuration of a contactless communication medium 100 according to the first embodiment will be described with reference to Figs. 1 to 3. Fig. 1 is a cross-sectional view showing an example of a contactless communication medium 100 according to the first embodiment. Fig. 2 is a plan view showing an example of a contactless communication medium 100 according to the first embodiment. Fig. 1 corresponds to a cross-sectional view taken along the arrow II in Fig. 2.

[0015] As shown in FIG. 1, the contactless communication medium 100 according to the first embodiment may include an RFID tag 1, a housing 2 that houses the RFID tag 1 therein, and a base 3 on which the housing 2 is placed.

[0016] The RFID tag 1 may have, for example, a substrate having wiring, an antenna for contactless communication, an IC chip for contactless communication via the antenna, and a memory for storing identification information. The substrate may be, for example, a ceramic substrate. Furthermore, the substrate included in the RFID tag 1 may have, for example, aluminum oxide or LTCC (Low Temperature Co-fired Ceramics).

[0017] The RFID tag 1 may be capable of transmitting the identification information stored in the memory to an external device, such as an RFID reader, by non-contact communication using electromagnetic induction, radio waves, etc. The heat resistance temperature of the RFID tag 1 may be, for example, 150°C or higher.

[0018] The housing 2 may have a first base material 21, a second base material 22, and an adhesive layer 23. The first base material 21 and the second base material 22 may be bonded together via the adhesive layer 23.

[0019] The first substrate 21 and the second substrate 22 may have, for example, a cylindrical shape. Specifically, the first substrate 21 and the second substrate 22 may have two flat surfaces (upper end surface and lower end surface in the example of FIG. 1) that are circular in plan view, and may also have a side surface (outer peripheral surface in the example of FIG. 1) connecting these two flat surfaces. The upper end surface of the first substrate 21 and the lower end surface of the second substrate 22 are opposed to each other with approximately the same diameter, and an adhesive layer 23 may be located between them.

[0020] The first substrate 21 may have an accommodating recess 241 that accommodates the RFID tag 1. The accommodating recess 241 may be open at the center of the upper end surface of the first substrate 21. For example, the first substrate 21 and the second substrate 22 are joined together via an adhesive layer 23 to close the accommodating recess 241, thereby forming the accommodating space 24.

[0021] The first substrate 21 and the second substrate 22 may be made of, for example, ceramics. The ceramics constituting the first substrate 21 and the second substrate 22 may be, for example, steatite or cordierite. Since steatite or cordierite have low thermal conductivity, using ceramics of these materials can adequately protect the RFID tag 1 from high-temperature environments. Silicon nitride may also be used because of its excellent thermal shock resistance. Alumina may also be used from a cost perspective. Zirconia, silicon carbide, etc. may also be used. Alternatively, the first substrate 21 and the second substrate 22 may be made of a heat-resistant resin. The adhesive layer 23 may have heat resistance sufficient to withstand the environment in which the non-contact communication medium 100 is used. The adhesive layer 23 may be, for example, an inorganic adhesive.

[0022] The configuration of the housing 2 is not limited to that shown in the figure, and any configuration may be used as long as it is made of a heat-resistant and radio wave-transmitting material and has an internal space for accommodating the RFID tag 1. Modified examples of the configuration of the housing 2 will be described later with reference to FIG.

[0023] The base 3 may have a main body 31 and a plurality of legs 32. The main body 31 may have, for example, a thin plate shape that is rectangular in plan view (see FIG. 2). Specifically, the main body 31 may have a first surface 311 and a second surface 312 located on the opposite side of the first surface 311. The housing 2 may be placed on the first surface 311.

[0024] The leg portions 32 may be located on the second surface 312 of the main body portion 31. The leg portions 32 may be in contact with the body to be heated 4, which will be described later. Details of the leg portions 32 will be described later.

[0025] The main body 31 and the leg 32 may be integral. The first surface 311 and the housing 2 may be joined with an adhesive or the like. The adhesive may be, for example, an inorganic adhesive as long as it has heat resistance that can withstand the environment in which the non-contact communication medium 100 is used.

[0026] The base 3 may be made of a highly heat-resistant material such as ceramics. The ceramic that makes up the base 3 may be, for example, cordierite. Alternatively, the ceramic that makes up the base 3 may be, for example, Al2O3 (alumina), Si3N4 (silicon nitride), SiC (silicon carbide), or Al2TiO5 (aluminum titanate). Alternatively, the base 3 may be made of crystallized glass such as Li2O-Al2O3-SiO2. The base 3 may also be porous. In this case, the porosity may be 5% by volume or more and 50% by volume or less.

[0027] The heated object 4 may be, for example, a piece of steel. The non-contact communication medium 100 of the present disclosure may be used to identify the heated object 4, for example, by associating it one-to-one with the heated object 4. In the present disclosure, "associating it one-to-one" means that the heated object 4 and the non-contact communication medium 100 are moved or otherwise moved simultaneously so that the combination of the heated object 4 and the non-contact communication medium 100 remains unchanged.

[0028] 3 is an enlarged cross-sectional view showing an example of the base 3 according to the first embodiment. As shown in Fig. 3, the leg portion 32 of the base 3 may have a base end portion 321 located on the main body portion 31 side, a tip end portion 322 located on the opposite side of the base end portion 321 and in contact with the object to be heated 4, and an intermediate portion 323 connecting the base end portion 321 and the tip end portion 322.

[0029] At least three or more legs 32 may be provided on the second surface 312 of the main body 31. For example, the base 3 according to the first embodiment may have three legs 32 (see FIG. 2). According to this configuration, each leg 32 forms a virtual plane with each leg 32 as a vertex. This allows the base 3 to be stably placed on the object 4 to be heated. Note that the base 3 according to the first embodiment may have four or more legs 32.

[0030] The intermediate portion 323 may be convexly curved. As an example of the leg portion 32 having the convexly curved intermediate portion 323, the leg portion 32 may have a spherical crown shape protruding from the second surface 312. A spherical crown is a part of a sphere cut by a plane. With this configuration, cracks due to thermal stress are less likely to occur in the leg portion 32.

[0031] The tip 322 of the leg 32 may be in point contact with the object 4 to be heated. Point contact here includes contact between the tip 322 and the object 4 to be heated at one point or a very small contact surface. For example, in the case of the leg 32 having a spherical crown shape, i.e., the leg 32 according to the first embodiment, the tip 322 comes into contact with the object 4 to be heated at one point. An example of contact between the tip 322 and the object 4 to be heated at a very small contact surface will be described later with reference to FIG. 4.

[0032] With this configuration, the contact area between the base 3 and the heated object 4 can be reduced. In other words, the heat conduction path between the base 3 and the heated object 4 can be reduced. This makes it possible to reduce the flow of heat into the RFID tag 1 compared to the prior art, where the heated object and the housing that houses the RFID tag are connected by a support member or the like. Therefore, with this configuration, the heat resistance of the non-contact communication medium 100 can be improved.

[0033] At least three or more legs 32 may be arranged circumferentially on the second surface 312. In such a case, the legs 32 may be arranged at equal intervals on the circumference. With this configuration, the base 3 can be stably placed on the object 4 to be heated.

[0034] Furthermore, for example, when the pedestal 3 has three legs 32, the three legs 32 may be arranged such that a triangle with each leg 32 as a vertex forms an isosceles triangle. In such a case, the three legs 32 may be arranged such that the base of the isosceles triangle is located in the direction of travel of the object 4 to be heated. As described above, the object 4 to be heated on the pedestal 3 may move horizontally (in a direction along the XY plane). With this configuration, the pedestal 3 is less likely to tip over when the object 4 to be heated moves horizontally.

[0035] Second Embodiment Next, the configuration of the base 3 according to the second embodiment will be described with reference to Fig. 4. Fig. 4 is an enlarged cross-sectional view showing an example of the base 3 according to the second embodiment.

[0036] As shown in FIG. 4, the leg portion 32 according to the second embodiment may have a flat tip portion 322. The fact that the tip portion 322 is a flat surface means that although it can be approximated to a point when viewed with the naked eye, it can be perceived that the tip portion 322 is a flat surface when the tip portion 322 is magnified. Such a tip portion 322 may be, for example, circular in plan view. Further, the tip portion 322 may be smaller than the base end portion 321. That is, for example, when the diameter of the base end portion 321 of the leg portion 32 is D1 and the diameter of the tip portion 322 of the leg portion 32 is D2, D1>D2 may be satisfied.

[0037] According to such a configuration, since the tip portion 322 and the heated body 4 contact each other on a flat contact surface, the pedestal 3 can be stably placed on the heated body 4 as compared with the case where the tip portion 322 and the heated body 4 contact at a single point. When the contact surface is circular, in the relationship between the area of the contact surface and the maximum diameter of the contact surface, the maximum diameter becomes the smallest. The contact area can be reduced, and the contact length between the tip portion 322 and the heated body 4, for example, the maximum length can be reduced. Therefore, when there is a difference in the coefficient of thermal expansion between the tip portion 322 and the heated body 4, the generation of stress due to the expansion and contraction of both can be reduced. The above maximum diameter may be 1 mm or less.

[0038] In addition, the magnitude relationship between D2 and D1 may be, for example, 0.2D1<D2<0.5D1. That is, the tip portion 322 may be a minute surface that satisfies 0.2D1<D2<0.5D1. When the tip portion 322 is a flat surface, corners are likely to be formed at the edges of the tip portion 322. According to such a configuration, the number of the above corners in the leg portion 32 can be reduced. Therefore, in the leg portion 32, cracks and the like due to thermal stress are unlikely to occur.

[0039] Further, according to such a configuration, the contact area between the tip portion 322 and the heated body 4 can be made relatively small. Therefore, while reducing the inflow of heat to the RFID tag 1, the pedestal 3 can be stably placed on the heated body 4. Also, the contact area may be 1 mm 2 or less.

[0040] 4, the base end 321 of the leg 32 may be curved in a concave shape in a side view. Specifically, the base end 321 may have, for example, a meniscus shape. With this configuration, cracks and the like caused by thermal stress are less likely to occur in the leg 32 compared to when the base end 321 is not curved.

[0041] Third Embodiment Next, the configuration of the base 3 according to the third embodiment will be described with reference to Fig. 5. Fig. 5 is an enlarged cross-sectional view showing an example of the base 3 according to the third embodiment.

[0042] 5, in the base 3 according to the third embodiment, the leg portions 32 may be separate from the main body portion 31. That is, the leg portions 32 may be detachable from the main body portion 31. In such a case, the base end portions 321 of the leg portions 32 may be flat.

[0043] The main body 31 and the leg 32 may be bonded together via an adhesive layer 5. Specifically, the second surface 312 of the main body 31 and the base end 321 of the leg 32 may be bonded together by the adhesive layer 5. The adhesive layer 5 may have heat resistance sufficient to withstand the environment in which the non-contact communication medium 100 is used. The adhesive layer 5 may be, for example, an inorganic adhesive.

[0044] According to the base 3 in accordance with the third embodiment, the base 3 is easier to manufacture than when the main body 31 and the leg portions 32 are integral with each other.

[0045] 5, the adhesive layer 5 located between the main body 31 and the leg portions 32 may have a concavely curved shape in a side view. Specifically, the adhesive layer 5 may have, for example, a meniscus shape. With this configuration, cracks and the like caused by thermal stress are less likely to occur in the adhesive layer 5 compared to when the adhesive layer 5 is not curved.

[0046] <Fourth embodiment> Next, the configuration of the base 3 according to the fourth embodiment will be described with reference to Fig. 6 and Fig. 7. Fig. 6 is an enlarged cross-sectional view showing an example of the base 3 according to the fourth embodiment. Fig. 7 is a plan view showing an example of the base 3 according to the fourth embodiment. Fig. 6 corresponds to a cross-sectional view taken along the line VI-VI in Fig. 7.

[0047] 6, in the base 3 according to the fourth embodiment, the main body 31 may have a recess 313 on the second surface 312. In addition, in the fourth embodiment, the leg 32 may be a spherical body separate from the main body 31.

[0048] The recess 313 may have, for example, a circular shape in a plan view of the main body 31 (see FIG. 7). The diameter of the recess 313 may be larger than the diameter of the leg 32. The depth of the recess 313 may be smaller than the diameter of the leg 32. The leg 32 may be located in the recess 313, with the base end 321 in contact with the main body 31.

[0049] According to the base 3 of the fourth embodiment, the base 3 can be constructed without bonding the main body 31 and the leg portions 32 with an adhesive or the like. This allows the leg portions 32 to be easily detached from the main body 31, and therefore allows the leg portions 32 to be easily replaced even if they deteriorate due to wear or the like.

[0050] Furthermore, since the leg portions 32 are spherical, the base end portions 321 can be brought into point contact with the main body portion 31. This makes it possible to reduce the heat conduction path between the main body portion 31 and the leg portions 32 compared to when the leg portions 32 have a spherical crown shape, for example. This therefore reduces the flow of heat from the heated object 4 to the RFID tag 1, thereby improving the heat resistance of the non-contact communication medium 100.

[0051] The base end 321 of the leg 32 may be a flat surface. With this configuration, the base end 321 and the housing 2 contact each other over the entire flat surface, and therefore the housing 2 can be placed on the base 3 more stably than when the base end 321 and the housing 2 contact each other at a single point.

[0052] Next, a modification of the base 3 according to the fourth embodiment will be described with reference to Fig. 8. Fig. 8 is an enlarged cross-sectional view showing a first modification of the base 3 according to the fourth embodiment.

[0053] As shown in Fig. 8, in the base 3 according to the fourth embodiment, the legs 32 may be, for example, ellipsoidal. In this case, the legs 32 may be positioned so that their major axis direction is parallel to the second surface 312 in a cross-sectional view. The diameter of the recesses 313 may be greater than the length of the major axis of the legs 32. The depth of the recesses 313 may be less than the length of the minor axis of the legs 32. With this configuration, the legs 32 are less likely to roll on the surface of the object 4 to be heated than when the legs 32 are spherical, and the base 3 can be placed on the object 4 more stably.

[0054] Next, a modified example of the base 3 according to the fourth embodiment will be described with reference to Fig. 9. Fig. 9 is an enlarged cross-sectional view showing a second modified example of the base 3 according to the fourth embodiment.

[0055] 9, in the base 3 according to the fourth embodiment, the leg 32 may be a sphere having a strip-shaped portion 324 protruding from the surface of the leg 32. The strip-shaped portion 324 may be provided, for example, at the center of the surface of the leg 32, i.e., on the circumference of the largest radius relative to the central axis of the leg 32, over the entire circumferential direction. In such a case, the leg 32 may be arranged so that the central axis is parallel to the Z-axis direction.

[0056] With this configuration, the legs 32 are less likely to roll on the surface of the heated object 4 than when the legs 32 are spherical and do not have the band-shaped portion 324, so the base 3 can be placed more stably on the heated object 4.

[0057] Fifth Embodiment Next, the configuration of the base 3 according to the fifth embodiment will be described with reference to Figs. 10 and 11. Fig. 10 is an enlarged cross-sectional view showing an example of the base 3 according to the fifth embodiment. Fig. 11 is a plan view showing an example of the base 3 according to the fifth embodiment. Fig. 10 corresponds to the cross-sectional view taken along the arrow XX in Fig. 11. Note that in the fifth embodiment, the leg portion 32 may be a spherical body separate from the main body portion 31.

[0058] As shown in FIG. 10, in the base 3 according to the fifth embodiment, the main body 31 may have a first member 31a and a second member 31b. The first member 31a and the second member 31b may have, for example, a thin plate shape that is rectangular in plan view. Specifically, the first member 31a and the second member 31b may have two flat surfaces (an upper end surface and a lower end surface) that are rectangular in plan view. The lower end surface of the first member 31a and the upper end surface of the second member 31b may have substantially the same shape and face each other, and an adhesive layer 6 may be located between them.

[0059] The adhesive layer 6 may be, for example, an inorganic adhesive as long as it has heat resistance sufficient to withstand the environment in which the non-contact communication medium 100 is used. The adhesive layer 6 may also contain ceramic particles. When the adhesive layer 6 contains such particles, the thickness of the adhesive layer 6 can be adjusted by adjusting the amount of the particles contained.

[0060] The first member 31a may have a circumferentially formed groove on the lower end surface of the first member 31a. The width of the groove may be larger than the diameter of the leg portion 32. The second member 31b may have a plurality of through holes extending from the upper end surface to the lower end surface of the second member 31b. The plurality of through holes may be arranged circumferentially in the second member 31b so as to face the grooves in the first member 31a. The number of the through holes may be the same as the number of the legs 32. The diameter of the opening located in the upper end surface of the second member 31b may be the same as the width of the groove. The diameter of the opening located in the lower end surface of the second member 31b may be smaller than the diameter of the leg portion 32.

[0061] In the base 3 according to the fifth embodiment, the main body 31 may have a hollow portion 314 formed therein by the groove portion and the through-hole (see FIGS. 10 and 11). The main body 31 may also have an opening 315 formed by the through-hole in the second surface 312 of the main body 31, the opening 315 communicating with the hollow portion 314. A portion of the leg 32 may be located inside the hollow portion 314. Another portion of the leg 32 may be exposed to the outside of the main body 31 from the opening 315.

[0062] According to this configuration, by storing the legs 32 inside the hollow portion 314, even if the legs 32 are separate from the main body 31, the main body 31 and the legs 32 can be handled as an integrated member. This makes it easy to manage the base 3. Furthermore, by storing the legs 32 inside the hollow portion 314, the legs 32 are less likely to move on the surface of the heated object 4, so the base 3 can be placed on the heated object 4 more stably.

[0063] Furthermore, according to this configuration, by providing the hollow portion 314 inside the main body 31, the heat conduction path between the housing 2 and the object to be heated 4 can be made smaller than when there is no hollow portion 314. Therefore, the flow of heat from the object to be heated 4 to the RFID tag 1 can be reduced, and the heat resistance of the non-contact communication medium 100 can be improved.

[0064] Furthermore, when the non-contact communication medium 100 according to the fifth embodiment is seen through from above, the hollow portion 314 may be provided so as to surround the area where the housing 2 is placed. That is, when seen through from above the non-contact communication medium 100, the housing 2 may be located inside the circumferentially extending hollow portion 314. With this configuration, heat from the heated object 4 is less likely to be transmitted to the housing 2, and the heat resistance of the non-contact communication medium 100 is improved.

[0065] In the fifth embodiment, the main body 31 of the base 3 has the first member 31a and the second member 31b, but the main body 31 may be an integral member. Alternatively, the main body 31 may be configured not only by the first member 31a and the second member 31b, but also by three or more plate-like members.

[0066] In the fifth embodiment, the first member 31a has a groove formed circumferentially on the lower end surface, but the first member 31a may have a plurality of recesses instead of the groove. In this case, the first member 31a may be the same member as the main body 31 in the first to fourth embodiments, and the recesses and the through-holes may form the hollow portion 314.

[0067] Sixth Embodiment Next, the configuration of the non-contact communication medium 100 according to the sixth embodiment will be described with reference to Fig. 12. Fig. 12 is a cross-sectional view showing an example of the non-contact communication medium 100 according to the sixth embodiment.

[0068] 12 , in the contactless communication medium 100 according to the sixth embodiment, the housing 2 may have a protrusion 221 at the end opposite to the base 3. Specifically, the protrusion 221 may be provided at the end on the upper end surface side of the second base material 22 of the housing 2 so as to protrude from the side surface of the second base material 22. Such a protrusion 221 may be provided, for example, around the entire periphery of the side surface of the second base material 22.

[0069] According to this configuration, the protrusion 221 can be easily held using, for example, a robot arm or the like, and the non-contact communication medium 100 can be easily moved.

[0070] Seventh Embodiment Next, the configuration of the non-contact communication medium 100 according to the seventh embodiment will be described with reference to Fig. 13. Fig. 13 is a cross-sectional view showing an example of the non-contact communication medium 100 according to the seventh embodiment.

[0071] 13, the non-contact communication medium 100 according to the seventh embodiment may have another base 3 on the upper end surface of the second substrate 22. That is, the non-contact communication medium 100 according to the seventh embodiment may have two bases 3.

[0072] According to this configuration, it becomes easy to hold the base 3 located on the upper end surface side of the second base material 22 with, for example, a robot arm or the like, and therefore it is possible to easily move the non-contact communication medium 100. Furthermore, according to this configuration, compared to when the protrusion 221 is provided on the housing 2, it is difficult for a robot arm or the like to come into contact with the housing 2, and therefore vibration damage and the like is less likely to be transmitted to the RFID tag 1 located inside the housing 2.

[0073] In this case, the base 3 located on the upper end surface of the second substrate 22 may be held by vacuum suction using a high-temperature resistant vacuum pad or the like, instead of by a robot arm or the like. There is no particular distinction between the base 3 located on the lower end surface of the first substrate 21 and the base 3 located on the upper end surface of the second substrate 22. In other words, the non-contact communication medium 100 can also be used upside down.

[0074] Eighth Embodiment Next, the configuration of the non-contact communication medium 100 according to the eighth embodiment will be described with reference to Fig. 14 to Fig. 17. Fig. 14 is a cross-sectional view showing an example of the non-contact communication medium 100 according to the eighth embodiment.

[0075] 14 , in the non-contact communication medium 100 of the eighth embodiment, the base 3 may have a plurality of protrusions 34 on the first surface 311. Furthermore, the housing 2 may have a plurality of recesses 211 connected to the protrusions 34 on the lower end surface of the first base material 21. The housing 2 may be fixed to the base 3 by fitting the recesses 211 into the protrusions 34.

[0076] FIG. 15 is a cross-sectional view showing another example of the non-contact communication medium 100 according to the eighth embodiment. FIG. 16 is an enlarged cross-sectional view showing an example of part H1 in FIG. 15. As shown in FIG. 15, the base 3 may have an accommodating recess 35 on the first surface 311 into which an end of the housing 2 can be inserted. In such a case, as shown in FIG. 16, the accommodating recess 35 may have a protrusion 351 on, for example, a side surface. The housing 2 may have a groove at the lower end of the first base material 21 that is connected to the protrusion 351. The housing 2 may be fixed to the base 3 by fitting the protrusion 351 into the groove.

[0077] Fig. 17 is a cross-sectional view showing another example of the contactless communication medium 100 according to the eighth embodiment. As shown in Fig. 17, the base 3 may have a housing 36 on the first surface 311 into which the housing 2 can be inserted. The housing 36 may have, for example, a cylindrical shape with an open top. The housing 2 may be fixed to the base 3 by inserting the housing 2 into the housing 36. The base 3 may be made up of multiple members or may be a single unit.

[0078] Ninth Embodiment Next, the configuration of the non-contact communication medium 100 according to the ninth embodiment will be described with reference to Fig. 18. Fig. 18 is a cross-sectional view showing an example of the non-contact communication medium 100 according to the ninth embodiment.

[0079] The non-contact communication medium 100 in the ninth embodiment may have a plurality of stacked bases 3. In the ninth embodiment, for example, two bases 3 may be stacked. With this configuration, heat is less likely to be transferred from the heated object 4 to the housing 2 than when there is one base 3, and the heat resistance of the non-contact communication medium 100 is improved.

[0080] 18 , in the ninth embodiment, the base 3 located on the heated object 4 side, i.e., the lower base 3, may have a plurality of recesses 37 on the first surface 311. The legs 32 of the upper base 3 may be located in the recesses 37. With this configuration, the upper base 3 can be stably placed on the lower base 3.

[0081] The diameter of the recessed portion 37 may be smaller than the diameter of the leg portion 32 of the upper-layer base 3 in a plan view. With this configuration, the contact area between the upper-layer base 3 and the lower-layer base 3 can be reduced, making it difficult for heat to be transferred from the object to be heated 4 to the housing 2. Furthermore, a space can be formed between the leg portion 32 of the upper-layer base 3 and the recessed portion 37 of the lower-layer base 3, making it difficult for heat to be transferred from the object to be heated 4 to the housing 2. Therefore, the heat resistance of the non-contact communication medium 100 can be improved.

[0082] Although the example in which the non-contact communication medium 100 has two stacked bases 3 has been described here, the non-contact communication medium 100 may have a configuration in which three or more stacked bases 3 are used. In such a case, the above-mentioned plurality of recessed portions 37 may be provided in the bases 3 other than the top-most base 3 among the plurality of bases 3.

[0083] Tenth Embodiment Next, the configuration of the non-contact communication medium 100 according to the tenth embodiment will be described with reference to Fig. 19. Fig. 19 is a cross-sectional view showing an example of the non-contact communication medium 100 according to the tenth embodiment.

[0084] In the first to ninth embodiments, examples have been described in which the housing 2 has a first base material 21, a second base material 22, and an adhesive layer 23, but the configuration of the housing 2 is not limited to the above examples.

[0085] For example, the housing 2 according to the tenth embodiment may have a bottom plate 25, a cylindrical body 26, and a top plate 27. The bottom plate 25 may be plate-shaped, for example, a disk-shaped. The cylindrical body 26 may be cylindrical, for example, a cylinder-shaped. The top plate 27 may be plate-shaped, for example, a disk-shaped. The end of the cylindrical body 26 on the side of the base 3 may be closed by the bottom plate 25, and the end of the cylindrical body 26 opposite the base 3 may be closed by the top plate 27, thereby forming the housing 2 having a hollow columnar shape.

[0086] The bottom plate 25 may be joined to the base 3 via, for example, a first adhesive layer 71. The cylindrical body 26 may be joined to the bottom plate 25 via, for example, a second adhesive layer 72. The top plate 27 may be joined to the cylindrical body 26 via, for example, a third adhesive layer 73. The first adhesive layer 71, the second adhesive layer 72, and the third adhesive layer 73 may be made of, for example, an inorganic adhesive, as long as they have heat resistance sufficient to withstand the environment in which the non-contact communication medium 100 is used.

[0087] The thermal expansion coefficient of the adhesive may be close to that of the components to be bonded (the bonded components). In other words, if the thermal expansion coefficient of the adhesive is α1 and the thermal expansion coefficient of the components to be bonded is α2, the thermal expansion coefficient may be within the range of 0.9<α2 / α1<1.1. Furthermore, the thermal expansion coefficient and thermal conductivity may be adjusted by adding ceramic powder to the adhesive.

[0088] In the non-contact communication medium 100 according to the tenth embodiment, the RFID tag 1 may be housed in the cylindrical body 26 of the housing 2. The RFID tag 1 may be covered with a heat insulating material 8. A gap S1 may be present between the top plate 27 and the RFID tag 1. The RFID tag 1 may be shifted to the opposite side of the object to be heated 4 from the center of the cylindrical body 26 in the extension direction.

[0089] The housing 2 according to the tenth embodiment having such a configuration can more effectively reduce the inflow of heat from the heated object 4 to the RFID tag 1 compared to the housings 2 according to the first to eighth embodiments. Therefore, the heat resistance of the non-contact communication medium 100 can be further improved.

[0090] The present disclosure has been described in detail above, but the present disclosure is not limited to the above-described embodiments, and various modifications, improvements, etc. are possible within the scope that does not deviate from the gist of the present disclosure.

[0091] The disclosed embodiments should be considered in all respects as illustrative and not restrictive. Indeed, the above-described embodiments may be embodied in various forms. Furthermore, the above-described embodiments may be omitted, substituted, or modified in various ways without departing from the scope and spirit of the appended claims.

[0092] The present technology can also be configured as follows. (1) a housing having an internal storage space; an RFID tag located in the accommodation space; a base on which the housing is placed; Equipped with A non-contact communication medium, wherein the base has at least three legs that make point contact with the heated object. (2) The non-contact communication medium according to (1), wherein, in a plan view, the at least three legs are arranged circumferentially. (3) the base has a main body portion having a flat plate shape and the at least three legs, The leg portion is a base end portion located on the main body portion side; a tip end portion located opposite the base end portion and in contact with the object to be heated; an intermediate portion connecting the base end portion and the tip end portion; and The non-contact communication medium according to (1) or (2), wherein the intermediate portion is convexly curved. (4) The non-contact communication medium according to (3), wherein the tip portion has a flat surface. (5) the at least three legs are separate from the main body; The non-contact communication medium according to (3) or (4), wherein the base end portion is a flat surface. (6) The non-contact communication medium according to (4) or (5), wherein the base end is larger than the tip end in a plan view. (7) The non-contact communication medium according to (3) or (4), wherein the base end is concavely curved in a side view. (8) the base has a main body portion having a flat plate shape and the at least three legs that are separate from the main body portion, the main body has a recess on a surface facing the object to be heated, The non-contact communication medium according to any one of (3) to (6), wherein the leg portion is located in the recess portion. (9) the base has a main body portion having a flat plate shape and the at least three legs that are separate from the main body portion, The main body portion is A hollow portion located inside; at least three openings located on a surface facing the object to be heated and communicating with the cavity; and The non-contact communication medium according to any one of (1) to (6), wherein the leg portion is housed in the hollow portion and a part of the leg portion is exposed to the outside through the opening portion. (10) The non-contact communication medium according to any one of (1) to (9), wherein the housing has a protrusion located at an end opposite to the base side. [Explanation of symbols]

[0093] 1. RFID tag 2. Case 3. Pedestal 4 Heated object 5,6,23 Adhesive layer 8. Insulation 21 First base material 22 Second base material 24 Containment Space 25 Bottom plate 26 Cylinder 27 Top plate 31 Main body 31a First member 31b Second member 32 Legs 34,221,351 Protrusion 35,241 Recessed storage area 36 Storage section 37 Recessed part 71 1st adhesive layer 72 Second adhesive layer 73 Third adhesive layer 100 Contactless communication media 211,313 recesses 311 Page 1 312 2nd page 314 Cavity 315 Opening 321 Proximal end 322 Tip 323 Middle section 324 Belt S1 void

Claims

1. a housing having an internal storage space; an RFID tag located in the accommodation space; a base on which the housing is placed; Equipped with A non-contact communication medium, wherein the base has at least three legs that come into point contact with the heated object.

2. The contactless communication medium according to claim 1 , wherein the at least three legs are arranged circumferentially in a plan view.

3. the base has a main body portion having a flat plate shape and the at least three legs, The leg portion is a base end portion located on the main body portion side; a tip end portion located opposite the base end portion and in contact with the object to be heated; an intermediate portion connecting the base end portion and the tip end portion; and The contactless communication medium according to claim 1 , wherein the intermediate portion is convexly curved.

4. The non-contact communication medium according to claim 3 , wherein the tip portion has a flat surface.

5. the at least three legs are separate from the main body; The non-contact communication medium according to claim 3 , wherein the base end portion is a flat surface.

6. The non-contact communication medium according to claim 4 , wherein the base end is larger than the tip end in a plan view.

7. The non-contact communication medium according to claim 3 , wherein the base end portion is concavely curved in a side view.

8. the base has a main body portion having a flat plate shape and the at least three legs that are separate from the main body portion, the main body has a recess on a surface facing the object to be heated, The contactless communication medium according to claim 3 , wherein the leg portion is located in the recess.

9. the base has a main body portion having a flat plate shape and the at least three legs that are separate from the main body portion, The main body portion is A hollow portion located inside; at least three openings located on a surface facing the object to be heated and communicating with the cavity; and The contactless communication medium according to claim 1 , wherein the leg portion is housed in the hollow portion and a part of the leg portion is exposed to the outside through the opening portion.

10. The contactless communication medium according to claim 1 , wherein the housing has a protrusion located at an end opposite to the base side.

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