Book electronic tag capable of reminding temperature and humidity

Abstract

The invention provides a book electronic tag capable of reminding temperature and humidity, and belongs to the technical field of electronic tags, the book electronic tag comprises a packaging shell, a chip, a data wire and a temperature and humidity sensing module, and the chip is arranged in the packaging shell; one end of the data lead extends into the packaging shell and is connected with the chip so as to transmit signals; the temperature and humidity sensing module is connected with the data wire so as to transmit signals. The packaging shell can be fixed outside books such as books or file boxes so that data can be conveniently scanned and read, the temperature and humidity sensing module is arranged inside the books such as the books or the file boxes so that temperature and humidity monitoring can be carried out, and monitoring results can be transmitted to external receiving equipment through the chip during scanning so that the books can be conveniently scanned and read. Judging whether the physical state of the book is normal or not according to the temperature and humidity data; in this way, accurate monitoring of the temperature and humidity of specific books can be achieved, management of the books can be facilitated, and therefore the probability of damage or damage is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic tags, and more specifically, relates to an electronic book tag capable of reminding temperature and humidity. Background Art

[0002] At present, in the work of book management, the access status of books can be easily monitored through the existing book management system, but it is more difficult to monitor the physical status of specific books.

[0003] As books and materials need to be kept within a certain temperature and humidity range, otherwise they are prone to mold, insects or fire. The current method of monitoring temperature and humidity is usually to set up thermometers and hygrometers in the library, which are monitored regularly by dedicated personnel. However, this method can only monitor the temperature and humidity in the library, but not the temperature and humidity of specific books.

[0004] For example, in the process of retrieving and archiving books, books are occasionally returned without being completely dried inside after being soaked in water. Returned books or file boxes may contain pollutants, such as food, medicines, power banks, Bluetooth headsets, or flammable materials. If these are not discovered during the sorting and archiving process, the books may be damaged due to mold, insects, or fire. These situations are difficult to monitor using existing methods.

[0005] In addition, water seepage from the roof or walls, air conditioning leakage, summer moisture, and electrical circuit failures can easily cause abnormal temperature and humidity in parts of the library or even in a small part of the bookshelf. These situations are also difficult to monitor using existing methods. Summary of the invention

[0006] The purpose of the present invention is to provide an electronic book tag capable of reminding temperature and humidity, so as to solve the technical problem of difficulty in monitoring the physical state of a specific book in the prior art.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an electronic book tag that can remind temperature and humidity, including a packaging shell, a chip, a data wire and a temperature and humidity sensing module, the chip is arranged in the packaging shell; one end of the data wire extends to the inside of the packaging shell and is connected to the chip to transmit signals; the temperature and humidity sensing module is connected to the data wire to transmit signals.

[0008] In combination with the above technical solution, in a possible implementation method, the chip includes a substrate, a control module, a power module and a communication module. The control module is integrated on the substrate and connected to the data wire to transmit signals; the power module is arranged in the packaging shell and connected to the control module to supply power; the communication module is integrated on the substrate and connected to the control module to transmit signals.

[0009] In combination with the above technical solution, in a possible implementation method, the chip also includes a display module and an alarm module. The display module is arranged on the substrate and connected to the control module to transmit signals; the alarm module is arranged on the substrate and connected to the control module to transmit signals; and a window corresponding to the display module is provided on the packaging shell.

[0010] In combination with the above technical solution, in a possible implementation method, the temperature and humidity sensing module includes a protective jacket, a temperature sensor and a humidity sensor. The temperature sensor is used to detect temperature data, is disposed in the protective jacket, and is connected to the data wire to transmit signals; the humidity sensor is used to detect humidity data, is disposed in the protective jacket, and is connected to the data wire to transmit signals, and a vent is provided on the protective jacket at a position corresponding to the sensing part of the humidity sensor.

[0011] In combination with the above technical scheme, in a possible implementation, the temperature sensor includes a first insulating substrate, a first electrode group and a thermistor, the first insulating substrate is arranged in the protective jacket; the first electrode group is arranged on the first insulating substrate and connected to the data wire; the thermistor is arranged on the first insulating substrate and connected to the first electrode group; the humidity sensor includes a second insulating substrate, a second electrode group, a humidity-sensitive membrane and a water-permeable pad, the second insulating substrate is arranged in the protective jacket; the second electrode group is arranged on the second insulating substrate and connected to the data wire; the humidity-sensitive membrane is a membrane structure having different capacitance or resistance at different humidity, and is arranged on the second insulating substrate and connected to the second electrode group; the water-permeable pad is a sheet or membrane structure that can pass through air and water, and the cover is arranged on the outside of the humidity-sensitive membrane, and a vent is provided at a position on the protective jacket corresponding to the water-permeable pad, and the edge of the water-permeable pad is sealed and connected to the protective jacket.

[0012] In combination with the above technical solution, in a possible implementation, the protective jacket is a plastic heat-pressed packaging structure; the first insulating substrate and the second insulating substrate are spaced apart in the protective jacket.

[0013] In combination with the above technical solution, in a possible implementation, a reinforced protective layer is provided outside the data wire, the reinforced protective layer is a sheet structure, one end of which is connected to the packaging shell, and the other end is connected to the protective jacket.

[0014] In combination with the above technical solution, in a possible implementation method, a reinforcing rib line is also provided on the reinforced protective layer; the data wire is arranged in a wave shape in the reinforced protective layer; the reinforced protective layer is a planar spring curve structure; the reinforced protective layer and the protective jacket are connected by integral molding, bonding, welding or clamping.

[0015] In combination with the above technical solution, in a possible implementation manner, a rotating connection component is provided on the packaging shell, and the reinforced protective layer is connected to the rotating connection component.

[0016] In combination with the above technical solution, in a possible implementation manner, a bonding surface is provided on one side of the packaging shell, and a bonding layer is provided on the bonding surface.

[0017] The beneficial effect of the electronic book tag capable of reminding temperature and humidity provided by the present invention is that: compared with the prior art, when the present invention is used, the packaging shell can be fixed on the outside of books such as books or file boxes to facilitate scanning and reading data, and because the data wire has a certain length, the temperature and humidity sensing module can be placed inside books such as books or file boxes to monitor the internal temperature and humidity, and the monitoring result can be transmitted to an external receiving device through the chip during scanning, so as to judge whether the physical state of the book is normal based on the temperature and humidity data; in this way, accurate monitoring of the temperature and humidity of specific books can be achieved, which can facilitate the management of books and reduce the possibility of damage or destruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A schematic diagram of a top view of a book electronic tag capable of reminding temperature and humidity in a flattened state provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of a book electronic tag capable of reminding temperature and humidity provided by another embodiment of the present invention, cut along a horizontal plane in a flattened state; Figure 3 for Figure 2 An enlarged structural diagram of the temperature and humidity sensing module; Figure 4 A schematic diagram of the main structure of an electronic book tag capable of reminding temperature and humidity in a flattened state provided by another embodiment of the present invention; Figure 5 for Figure 4 A schematic side cross-sectional view of the rotating connection assembly of an embodiment.

[0020] Among them, the reference numerals in the figures are as follows: 10. Encapsulation shell; 11. Adhesive surface; 12. Accommodation groove; 13. T-shaped slide groove; 141, rotating shaft; 142, wire groove; 143, rotating disk; 144, positioning elastic member; 145, buffer traction shaft; 146, buffer elastic member; 147, narrow mouth; 20. Chip; 21. Baseboard; 22. Control module; 23. Power module; 24. Communication module; 25. Display module; 26. Alarm module; 30. Data conductor; 31. Strengthening protective layer; 32. Strengthening rib line; 40. Temperature and humidity sensing module; 41. Protective jacket; 411. Ventilation hole; 42. temperature sensor; 421. first insulating substrate; 422. first electrode group; 423. thermistor; 43. Humidity sensor; 431. Second insulating substrate; 432. Second electrode group; 433. Humidity sensitive film; 434. Water-permeable pad. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0022] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0023] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0025] The electronic book tag capable of reminding temperature and humidity provided by the present invention is now described.

[0026] like Figure 1 As shown, the first embodiment of the present invention provides a book electronic tag that can remind temperature and humidity, including a packaging shell 10, a chip 20, a data wire 30 and a temperature and humidity sensing module 40, the chip 20 is arranged in the packaging shell 10; one end of the data wire 30 extends to the inside of the packaging shell 10 and is connected to the chip 20 to transmit signals; the temperature and humidity sensing module 40 is connected to the data wire 30 to transmit signals.

[0027] Compared with the prior art, the electronic book tag capable of reminding temperature and humidity provided in the present embodiment can fix the packaging shell 10 on the outside of books such as books or file boxes when in use, so as to facilitate scanning and reading data. Since the data wire 30 has a certain length, the temperature and humidity sensing module 40 can be placed inside the books such as books or file boxes to monitor the internal temperature and humidity. The monitoring result can be transmitted to an external receiving device through the chip 20 during scanning, so as to judge whether the physical state of the book is normal based on the temperature and humidity data. In this way, accurate monitoring of the temperature and humidity of specific books can be achieved, which can facilitate the management of books and reduce the possibility of damage or destruction.

[0028] like Figures 1 to 5 As shown, some specific implementation modes provided by the present invention based on the first implementation mode are as follows: like Figure 2 and Figure 5 As shown, a sticking surface 11 is provided on one side of the packaging shell 10, and a sticking layer is provided on the sticking surface 11, so that the packaging shell 10 can be directly stuck and fixed on a book, a file box or other positions.

[0029] like Figure 2 As shown, the chip 20 includes a substrate 21, a control module 22, a power module 23 and a communication module 24. The control module 22 is integrated on the substrate 21 and connected to the data conductor 30 to transmit signals; the power module 23 is arranged in the packaging shell 10 and connected to the control module 22 to supply power; the communication module 24 is integrated on the substrate 21 and connected to the control module 22 to transmit signals.

[0030] Specifically, the power module 23 can be a component such as a battery, a charging port or an induction coil that can power power modules or components such as the control module 22; the communication module 24 is preferably a radio frequency module, or it can be a wireless signal transceiver module for active communication.

[0031] When in use, the control module 22 obtains and processes the temperature and humidity signals detected by the temperature and humidity sensing module 40 through the data conductor 30, and then sends the signals to an external receiving device through the communication module 24 to transmit the temperature and humidity data.

[0032] Furthermore, the chip 20 also includes a display module 25 and an alarm module 26. The display module 25 is arranged on the substrate 21 and connected to the control module 22 to transmit signals; the alarm module 26 is arranged on the substrate 21 and connected to the control module 22 to transmit signals; and a window corresponding to the display module 25 is provided on the packaging shell 10.

[0033] The alarm module 26 may be a module that can generate signals such as sound, light or vibration that can be directly felt by the administrator. When in use, the detected parameters such as temperature and humidity can be directly obtained through the display module 25, and when the parameters such as temperature and humidity exceed the rated value, the control module 22 controls the alarm module 26 to send an alarm signal to alert the administrator.

[0034] like Figure 2 and Figure 3 As shown, the temperature and humidity sensing module 40 includes a protective jacket 41, a temperature sensor 42 and a humidity sensor 43. The temperature sensor 42 is used to detect temperature data and is disposed in the protective jacket 41 and connected to the data wire 30 to transmit signals. The humidity sensor 43 is used to detect humidity data and is disposed in the protective jacket 41 and connected to the data wire 30 to transmit signals. A vent 411 is provided on the protective jacket 41 at a position corresponding to the sensing part of the humidity sensor 43 to facilitate air passage.

[0035] The protective jacket 41 is used to carry the temperature sensor 42 and the humidity sensor 43 to provide strength and protect the temperature sensor 42 and the humidity sensor 43 .

[0036] The temperature sensor 42 may be a thin film temperature sensor or a thin-film thermistor or other relatively light temperature sensor; the humidity sensor 43 may be a relatively small humidity sensor such as a resistive humidity sensor or a capacitive humidity sensor or other relatively small humidity sensor.

[0037] In some specific embodiments, the temperature sensor 42 includes a first insulating substrate 421, a first electrode group 422 and a thermistor 423, the first insulating substrate 421 is disposed in the protective jacket 41; the first electrode group 422 is disposed on the first insulating substrate 421 and connected to the data wire 30; the thermistor 423 is disposed on the first insulating substrate 421 and connected to the first electrode group 422.

[0038] When in use, the control module 22 of the chip 20 detects the resistance change of the thermistor 423 through the data wire 30 and the first electrode group 422, and obtains temperature data after data processing.

[0039] The humidity sensor 43 includes a second insulating substrate 431, a second electrode group 432, a humidity-sensitive film 433 and a water-permeable pad 434. The second insulating substrate 431 is arranged in the protective coat 41; the second electrode group 432 is arranged on the second insulating substrate 431 and connected to the data wire 30; the humidity-sensitive film 433 is a membrane structure having different capacitance or resistance under different humidity, and is arranged on the second insulating substrate 431 and connected to the second electrode group 432; the water-permeable pad 434 is a sheet or membrane structure that can pass air and water, and is covered on the outside of the humidity-sensitive film 433. A vent 411 is provided at a position on the protective coat 41 corresponding to the water-permeable pad 434, and the edge of the water-permeable pad 434 is sealed and connected to the protective coat 41 by bonding, welding, etc.

[0040] When in use, air and water vapor pass through the water-permeable pad 434 and act on the humidity-sensitive film 433, causing the capacitance or resistance of the humidity-sensitive film 433 to change. The control module 22 of the chip 20 detects the change in capacitance or resistance of the thermistor 423 through the data wire 30 and the first electrode group 422, and after data processing, humidity data can be obtained.

[0041] Specifically, the protective jacket 41 is a plastic heat-pressed packaging structure, so as to make the temperature and humidity sensing module 40 thinner, smaller and easier to use.

[0042] The first insulating substrate 421 and the second insulating substrate 431 are spaced apart in the protective jacket 41 to improve the sealing performance and prevent air or water vapor from contacting the thermistor 423 and affecting the use of the thermistor 423 .

[0043] like Figure 2 and Figure 4 As shown, a reinforced protective layer 31 is provided on the outside of the data conductor 30. The reinforced protective layer 31 is a sheet-like structure, and one end is connected to the packaging shell 10, and the other end is connected to the protective jacket 41, so as to strengthen and protect the data conductor 30 and reduce the possibility of damage to the data conductor 30. At the same time, the sheet-like reinforced protective layer 31 can prevent the data conductor 30 from twisting, thereby reducing damage caused by torsional fatigue.

[0044] Furthermore, a reinforcing rib line 32 is provided on the reinforcing protection layer 31 to enhance the pulling resistance of the data wire 30 .

[0045] The data conductor 30 is arranged in a wave shape inside the reinforced protection layer 31 so that the data conductor 30 will not be broken even after the reinforced protection layer 31 is stretched.

[0046] The reinforced protective layer 31 is a planar spring curved structure, that is, a curved structure such as a wave line or a broken line, so that the reinforced protective layer 31 has a certain elasticity and can be appropriately stretched or bent for easy use.

[0047] Specifically, the reinforced protective layer 31 and the protective jacket 41 are connected by integral molding, bonding, welding or clamping.

[0048] like Figure 4 and Figure 5 As shown, a rotating connection component is provided on the packaging shell 10, and the reinforced protective layer 31 is connected to the rotating connection component so that the reinforced protective layer 31 can produce a certain rotation, so that no matter where the packaging shell 10 is set, the reinforced protective layer 31 can smoothly extend to the required position, avoiding the situation where the reinforced protective layer 31 stands up or folds, which is beneficial to the protection of the data wire 30.

[0049] In some specific embodiments, a receiving groove 12 is provided on the packaging shell 10, a T-shaped slide groove 13 is provided in the receiving groove 12, and one end of the T-shaped slide groove 13 is provided with a wire through hole connected to the inside of the packaging shell 10; the rotating connection component includes a rotating shaft 141, a rotating disk 143 and a positioning elastic member 144, the rotating shaft 141 is a tubular structure connected at both ends, and one end is provided with a T-shaped head that cooperates with the T-shaped slide groove 13 for sliding and limiting, and the side of the T-shaped head facing the wire through hole is provided with a wire through groove 142; the rotating disk 143 is connected to the rotating shaft 141 at the other end. The reinforcing protective layer 31 is connected to the turntable 143, and the data wire 30 extends into the turntable 143, passes through the rotating shaft 141, passes through the wire groove 142 and the wire through hole, and then extends into the packaging shell 10. A friction limiting structure is provided between the side of the turntable 143 and the side wall of the accommodating groove 12; the positioning elastic member 144 is respectively connected to the rotating shaft 141 and the packaging shell 10, so as to provide an elastic force to press the turntable 143 against the side wall of the accommodating groove 12, so as to limit the rotation angle of the turntable 143 through the friction limiting structure.

[0050] The friction limiting structure can be a structure or component such as teeth, anti-skid patterns or anti-skid pads respectively arranged on the side of the rotating disk 143 and the side wall of the receiving groove 12, which can frictionally position the rotating disk 143. The positioning elastic member 144 can be a spring, a spring sheet or an elastic block, etc., which can provide elastic force.

[0051] When in use, the side of the turntable 143 is separated from the side wall of the accommodating groove 12 by pulling the reinforced protective layer 31 or the turntable 143, and the turntable 143 is rotated to make the reinforced protective layer 31 face the appropriate direction, and then the reinforced protective layer 31 and the turntable 143 are loosened, so that the turntable 143 is pressed on the side wall of the accommodating groove 12 by the elastic force of the positioning elastic member 144, and the rotation angle of the turntable 143 is limited by the friction limit structure to prevent the turntable 143 from being too loose, resulting in the reinforced protective layer 31 moving around under the action of gravity or vibration when taking or moving books, causing the position of the temperature and humidity sensing module 40 to move or damage the books, and at the same time, it can also make the arrangement of the books more neat and beautiful.

[0052] Furthermore, a buffer traction shaft 145 and a buffer elastic member 146 are provided in the turntable 143, and a narrow opening 147 for the reinforcing protective layer 31 to pass through is provided on the side wall of the turntable 143. The buffer elastic member 146 is respectively connected to the turntable 143 and the buffer traction shaft 145 to provide elastic force for the buffer traction shaft 145 to move away from the narrow opening 147; one end of the reinforced protective layer 31 passes through the narrow opening, bypasses the buffer traction shaft 145, and then rotates to the middle of the turntable 143 and is fixedly connected to the turntable 143.

[0053] In this way, when the reinforced protective layer 31 is pulled, the buffer traction shaft 145 can move toward the narrow opening 147, so that the reinforced protective layer 31 extends out of one end of the narrow opening 147, thereby playing a buffering role and avoiding accidental strong pulling that may cause the connection between the reinforced protective layer 31 and the turntable 143 to be disconnected.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A book electronic tag capable of reminding temperature and humidity, characterized in that: include: Packaging shell (10); A chip (20) is arranged in the packaging shell (10); A data wire (30), one end of which extends into the interior of the packaging shell (10) and is connected to the chip (20) to transmit signals; The temperature and humidity sensing module (40) is connected to the data wire (30) to transmit signals.

2. The electronic book tag capable of reminding temperature and humidity as claimed in claim 1, characterized in that: The chip (20) comprises: substrate(21); A control module (22) is integrated on the substrate (21) and connected to the data conductor (30) to transmit signals; A power module (23) is disposed in the packaging shell (10) and is connected to the control module (22) to supply power; A communication module (24) is integrated on the substrate (21) and connected to the control module (22) to transmit signals.

3. The electronic book tag capable of reminding temperature and humidity as claimed in claim 2, characterized in that: The chip (20) further includes: A display module (25) is disposed on the substrate (21) and is connected to the control module (22) to transmit signals; An alarm module (26) is disposed on the substrate (21) and is connected to the control module (22) to transmit a signal; The packaging shell (10) is provided with a window corresponding to the display module (25).

4. The electronic book tag capable of reminding temperature and humidity as claimed in claim 1, characterized in that: The temperature and humidity sensing module (40) comprises: Protective jacket (41); A temperature sensor (42), used for detecting temperature data, disposed in the protective jacket (41) and connected to the data wire (30) to transmit a signal; A humidity sensor (43) is used to detect humidity data and is disposed in the protective jacket (41) and connected to the data conductor (30) to transmit a signal. A vent hole (411) is provided on the protective jacket (41) at a location corresponding to the sensing portion of the humidity sensor (43).

5. The electronic book tag capable of reminding temperature and humidity as claimed in claim 4, characterized in that: The temperature sensor (42) comprises: A first insulating substrate (421) is disposed inside the protective outer jacket (41); A first electrode group (422) is provided on the first insulating substrate (421) and is connected to the data wire (30); a thermistor (423), disposed on the first insulating substrate (421) and connected to the first electrode group (422); The humidity sensor (43) comprises: A second insulating substrate (431) is disposed inside the protective jacket (41); A second electrode group (432) is provided on the second insulating substrate (431) and is connected to the data wire (30); The humidity sensitive film (433) is a film structure having different capacitance or resistance under different humidity conditions, and is provided on the second insulating substrate (431) and connected to the second electrode group (432); The water-permeable pad (434) is a sheet-like or membrane-like structure that is permeable to air and water, and is arranged on the outside of the moisture-sensitive membrane (433). The vent (411) is provided at a position on the protective jacket (41) corresponding to the water-permeable pad (434), and the edge of the water-permeable pad (434) is sealed and connected to the protective jacket (41).

6. The electronic book tag capable of reminding temperature and humidity as claimed in claim 5, characterized in that: The protective outer jacket (41) is a plastic hot-pressed packaging structure; the first insulating substrate (421) and the second insulating substrate (431) are arranged at intervals in the protective outer jacket (41).

7. The electronic book tag capable of reminding temperature and humidity as claimed in claim 5, characterized in that: A reinforced protective layer (31) is provided on the outside of the data conductor (30); the reinforced protective layer (31) is a sheet-like structure, one end of which is connected to the packaging shell (10) and the other end of which is connected to the protective jacket (41).

8. The electronic book tag capable of reminding temperature and humidity as claimed in claim 7, characterized in that: The reinforced protective layer (31) is also provided with a reinforcing rib line (32); the data conductor (30) is arranged in a wave shape in the reinforced protective layer (31); the reinforced protective layer (31) is a planar spring curve structure; the reinforced protective layer (31) and the protective jacket (41) are connected by means of integral molding, bonding, welding or clamping.

9. The electronic book tag capable of reminding temperature and humidity as claimed in claim 8, characterized in that: A rotating connection component is provided on the packaging shell (10), and the reinforced protective layer (31) is connected to the rotating connection component.

10. The electronic book tag capable of reminding temperature and humidity as claimed in claim 1, characterized in that: A bonding surface (11) is provided on one side of the packaging shell (10), and a bonding layer is provided on the bonding surface (11).

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