Solar remote controller

Abstract

A solar remote controller comprises: an opaque first housing layer through which light in a target wavelength range can pass; the key layer is fixed on the first shell layer, and at least one part of light penetrating through the first shell layer can penetrate through the key layer; the first solar panel is located below the key layer, and the wavelength range of absorbable light of the first solar panel is within the target wavelength range; the circuit board is positioned below the first solar panel; wherein the first solar panel absorbs light penetrating through the first shell layer and the key layer and converts the light into electric energy, and then the electric energy is transmitted to the circuit board so as to supply power to the solar remote controller. By adopting the solar remote controller provided by the invention, the generating capacity of the solar panel can be improved as much as possible under the conditions that the size of the remote controller is limited and the attractiveness of the remote controller is not influenced.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of remote controllers, and in particular to a solar remote controller. Background Art

[0002] In people's daily life, various household appliances such as televisions, stereos, air conditioners, etc. all require remote controls. Traditional remote controls mostly use dry batteries, alkaline batteries or mercury batteries as power sources. These batteries not only need to be replaced regularly, which causes inconvenience in use, but also have problems such as battery leakage, which can damage the remote control itself. Furthermore, the waste batteries of traditional remote controls after use are also very likely to cause serious pollution to the environment. Therefore, solar charging remote controls have become a research focus.

[0003] In existing solar remote controls, there is often no opaque covering on the surface of the solar panel. Specifically, there are two main structures: one is to use a completely opaque and opaque outer shell (for example, by adding a dye such as carbon to make the outer shell opaque), and the solar panel is set on the surface of the outer shell. On the one hand, this solution affects the appearance of the remote control, and on the other hand, the solar panel is more susceptible to damage when exposed to the surface of the outer shell; the other is to use a transparent outer shell to encapsulate the solar panel inside the outer shell, and the transparent outer shell will expose the internal structure of the remote control, which also affects the appearance of the product.

[0004] In addition, whether the solar remote controller adopts a transparent outer shell or an opaque outer shell, the key layer is usually made of rubber and an opaque dye (for example, a black dye). Therefore, in order to ensure that the solar panel can absorb light, the key layer cannot cover the surface of the solar panel. In the case of a limited size of the remote controller itself, since the key layer occupies a part of the size, the size of the solar panel has to be set smaller, which in turn leads to limited power generation. Summary of the invention

[0005] The technical problem solved by the embodiments of the present invention is how to maximize the power generation of the solar panel while limiting the size of the remote control and not affecting the aesthetics of the remote control.

[0006] To solve the above technical problems, an embodiment of the present invention provides a solar remote control, comprising the following steps: an opaque first shell layer, which is transparent to light in a target wavelength range; a button layer, fixed to the first shell layer, which is transparent to at least a portion of the light transmitted through the first shell layer; a first solar panel, located below the button layer, the wavelength range of light that can be absorbed by the first solar panel is within the target wavelength range; and a circuit board, located below the first solar panel; wherein the first solar panel absorbs the light transmitted through the first shell layer and the button layer and converts it into electrical energy, which is then transmitted to the circuit board to power the solar remote control.

[0007] Optionally, the solar remote control also includes a second solar panel and an opaque second outer shell layer, wherein the second solar panel is located between the circuit board and the second outer shell layer; the second outer shell layer can transmit light within the target wavelength range, and the wavelength range of light that can be absorbed by the second solar panel is within the target wavelength range; wherein the second solar panel absorbs the light transmitted through the second outer shell layer and converts it into electrical energy, which is then transmitted to the circuit board to power the solar remote control.

[0008] Optionally, the second solar panel is a double-sided power generation solar panel, and the second side of the second solar panel is opposite to the second side of the circuit board; the second side of the circuit board is coated with reflective material, which is used to reflect light passing through the second outer shell layer and the second solar panel to the second side of the second solar panel, so that the second side of the second solar panel absorbs the reflected light and converts it into electrical energy, which is then transmitted to the circuit board.

[0009] Optionally, the first solar panel is a double-sided power generation solar panel, and the second side of the first solar panel is opposite to the first side of the circuit board; the first side of the circuit board is coated with reflective material, which is used to reflect light passing through the first outer shell layer, the button layer and the first solar panel to the second side of the first solar panel, so that the second side of the first solar panel absorbs the reflected light and converts it into electrical energy, which is then transmitted to the circuit board.

[0010] Optionally, the reflective material includes reflective ink.

[0011] Optionally, the first shell layer has a plurality of through holes, the first surface of the button layer has a plurality of buttons, the plurality of buttons correspond to the plurality of through holes one by one, and each button passes through a corresponding through hole.

[0012] Optionally, the function labels on the buttons of the key layer are formed by a screen printing process.

[0013] Optionally, the button layer is made of transparent rubber, and diffusion powder is added into the transparent rubber.

[0014] Optionally, the target wavelength range includes one or more of the following: 600nm~800nm, 300nm~500nm.

[0015] Optionally, the first outer shell layer is dyed with a dye material that is transmissive to light within the target wavelength range.

[0016] Optionally, the material forming the first outer shell layer includes: thermoplastic polymer material and diffusion powder.

[0017] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0018] On the one hand, compared with the prior art that uses a transparent outer shell, this embodiment uses a first outer shell layer with an opaque material and a certain light transmittance (that is, it can transmit light within the target wavelength range), combined with a first solar panel that can absorb light within the target wavelength range. This can achieve that the first outer shell layer not only plays a role in protecting the device, but also transmits sunlight of a specific wavelength and is effectively absorbed by the solar panel, without affecting the aesthetics of the remote control.

[0019] On the other hand, compared with the prior art that uses a completely opaque key layer and the key layer does not cover the solar panel, this embodiment sets the key layer to be light-transmissive and sets the solar panel below the key layer, that is, the key layer and the solar panel can have an overlapping area in the vertical space. Therefore, when the size of the remote control is limited, the size of the solar panel can be set as large as possible (for example, close to the size of the remote control), and in an indoor light environment with low light intensity, the power generation of the solar panel can be effectively increased, ensuring that the remote control has sufficient power supply, and improving the user experience.

[0020] Furthermore, by using a double-sided power generation solar panel as the first solar panel and combining it with a circuit board coated with reflective material, it is possible to set the solar panel size as large as possible, and further enable both sides of the first solar panel to absorb sunlight of a specific wavelength and convert it into electrical energy, thereby effectively increasing the power generation.

[0021] Furthermore, by adding diffusion powder to the button layer, the originally transparent rubber material button layer can appear opaque in appearance while retaining a certain degree of light transmittance; further combined with the screen printing process, each button can appear black or colored, thereby achieving the light transmittance effect of the button layer without affecting the appearance of the remote control.

[0022] Furthermore, the prior art generally does not consider the light transmittance of the bottom or back of the solar remote control and the solar power generation performance, so the outer shell layer at the bottom of the remote control is often made of a completely opaque material; in contrast, the present embodiment not only considers the light transmittance of the front (corresponding to the first outer shell layer) of the solar remote control, but also further considers the light transmittance of the bottom or back (corresponding to the second outer shell layer) of the solar remote control and the solar power generation performance. Specifically, on the basis of the first solar panel with a double-sided power generation function, an additional second solar panel is provided between the circuit board and the second outer shell layer (located at the bottom of the remote control), and the second outer shell layer is provided to be opaque in appearance but light transmittance, and the wavelength range of the light that can be absorbed by the second solar panel is within the wavelength range of the light that can be transmitted by the second outer shell layer. In this way, it can be achieved that the second outer shell layer plays a role in protecting the device, can transmit sunlight of a specific wavelength and be effectively absorbed by the second solar panel, while not affecting the aesthetics of the remote control.

[0023] Furthermore, the second solar panel can overlap with the circuit board and the button layer in the vertical space. Therefore, when the size of the remote control is limited, the size of the second solar panel can be set as large as possible (for example, close to the size of the second outer shell layer). In an indoor light environment with weak light intensity, the power generation of the second solar panel can be effectively increased to ensure that the remote control has sufficient power supply and improve the user experience. Furthermore, in actual use, whether the solar remote control is facing up or the back is facing up, the solar power generation effect can be achieved to achieve a dual power generation effect, especially in an indoor light environment, it can also provide sufficient power generation.

[0024] Furthermore, by using a double-sided power generation solar panel as the second solar panel and combining it with a circuit board coated with reflective material, it is possible to set the second solar panel to be as large as possible, so that both sides of the second solar panel can absorb sunlight of a specific wavelength and convert it into electrical energy. On this basis, combined with the first solar panel with double-sided power generation function, the total power generation of the solar remote control can be greatly increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of a solar remote control in the prior art;

[0026] Figure 2 This is an exploded view of the structure of a solar remote controller according to an embodiment of the present invention;

[0027] Figure 3 It is a structural explosion diagram of another solar remote controller in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] As mentioned in the background technology, in existing solar remote controls, there is often no opaque covering on the surface of the solar panel. The solar panel is either set on the surface of an opaque and light-proof outer shell, or encapsulated inside a transparent outer shell; in addition, the button layer made of rubber and opaque dye (this button layer is almost light-proof) cannot cover the surface of the solar panel.

[0029] Reference Figure 1 , Figure 1 It is a structural diagram of a solar remote controller 10 in the prior art.

[0030] Specifically, the solar remote control 10 includes an outer shell 101, a button layer 102, a solar panel 103, a display screen 104, and a circuit board (not shown).

[0031] The outer shell 101 includes a transparent sub-shell 1011; the button layer 102 is fixed to the outer shell 101 and includes a plurality of buttons 1021, each of which is usually made of rubber material and dyed with an opaque dye; the solar panel 103 is encapsulated inside the outer shell 101, and the transparent sub-shell 1011 covers the solar panel 103; the projection of the button layer 102 on the bottom surface of the outer shell 101 does not overlap with the projection of the solar panel 103 on the bottom surface of the outer shell 101. In this way, the surface of the solar panel 103 is not covered with any opaque covering, ensuring that it can absorb indoor light and convert it into electrical energy, which is then transmitted to the circuit board to power the solar remote control 10.

[0032] However, on the one hand, since the solar remote control 10 adopts a transparent sub-housing 1011, the internal components and circuits of the housing are exposed, which makes the appearance poor; on the other hand, in the case of the limited size of the remote control itself, since the key layer 102 does not cover the solar panel 103, the key layer 102 needs to occupy a larger size, resulting in the solar panel size can only be set smaller, which leads to limited power generation. Especially in an indoor light environment with relatively weak light intensity, the daily power generation of the solar panel may not be enough to meet the daily power consumption of the remote control.

[0033] To solve the above technical problems, an embodiment of the present invention provides an improved solar remote control, which specifically includes: an opaque first shell layer, which is transparent to light in a target wavelength range; a button layer, which is fixed to the first shell layer, and which is transparent to at least a portion of the light transmitted through the first shell layer; a first solar panel, which is located below the button layer, and the wavelength range of light that can be absorbed by the first solar panel is within the target wavelength range; and a circuit board, which is located below the first solar panel; wherein the first solar panel absorbs the light transmitted through the first shell layer and the button layer and converts it into electrical energy, which is then transmitted to the circuit board to power the solar remote control.

[0034] On the one hand, compared with the prior art that uses a transparent outer shell, this embodiment uses a first outer shell layer with an opaque material and a certain light transmittance (that is, it can transmit light within the target wavelength range), combined with a first solar panel that can absorb light within the target wavelength range. This can achieve that the first outer shell layer not only plays a role in protecting the device, but also transmits sunlight of a specific wavelength and is effectively absorbed by the solar panel, without affecting the aesthetics of the remote control.

[0035] On the other hand, compared to the prior art that uses a completely opaque button layer and the button layer is not covered by a solar panel, this embodiment sets the button layer to be light-transmissive and sets the first solar panel below the button layer, that is, the button layer and the first solar panel can have an overlapping area in the vertical space. In other words, the projection of the first solar panel and the button layer on the plane where the first outer shell layer is located can have an overlapping area. Therefore, when the size of the remote control is limited, the size of the first solar panel can be set as large as possible (for example, close to the size of the first outer shell layer), and in an indoor light environment with weak light intensity, the power generation of the solar panel can be effectively increased to ensure that the remote control has sufficient power supply and improve the user experience.

[0036] In order to make the above-mentioned objects, features and beneficial effects of the present invention more obvious and understandable, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0037] Reference Figure 2 , Figure 2 1 is a structural explosion diagram of a solar remote controller 20 according to an embodiment of the present invention.

[0038] Specifically, the solar remote control 20 includes: an opaque first shell layer 201, which can transmit light within a target wavelength range; a button layer 202, which is fixed to the first shell layer 201, and the button layer 202 can transmit at least a portion of the light transmitted through the first shell layer 201; a first solar panel 203, which is located below the button layer 202, and the wavelength range of light that can be absorbed by the first solar panel 203 is within the target wavelength range; a circuit board 204, which is located below the first solar panel 203; wherein the first solar panel 203 absorbs the light transmitted through the first shell layer 201 and the button layer 202 and converts it into electrical energy, which is then transmitted to the circuit board 204 to power the solar remote control 20.

[0039] The solar remote controller 20 may further include an opaque second shell layer 206, which is located below the circuit board 204. Specifically, the first shell layer 201 serves as a packaging shell layer on the front side of the remote controller, and the second shell layer 206 serves as a packaging shell layer on the bottom or back side of the remote controller.

[0040] In a specific implementation, the first outer shell layer 201 and the second outer shell layer 206 are dyed with a dye material that can transmit light within the target wavelength range.

[0041] As a non-limiting example, the target wavelength range may include one or more of the following: 600nm-800nm, 300nm-500nm, wherein 600nm-800nm ​​covers the wavelength range of red light, and 300nm-500nm covers the wavelength range of blue light.

[0042] The materials forming the first shell layer 201 and the second shell layer 206 may include: thermoplastic polymer material and diffusion powder. The thermoplastic polymer material may be, for example, a terpolymer of acrylonitrile (A), butadiene (B), and styrene (S) (ABS).

[0043] Diffusion powder, also known as scattering powder, is a fine powder specially designed to modify the propagation path of light, and usually has a certain degree of light transmittance. The main components of diffusion powder usually include but are not limited to microspheres or nanoparticles with high refractive index such as silicon dioxide, polymethacrylate, acrylic polymer, fluoride glass microspheres, etc. Diffusion powder can scatter light under light irradiation, that is, it can break up the light that originally propagates in a straight line and scatter it in all directions, so that the originally concentrated light intensity becomes more uniform, thus producing a soft, non-direct effect.

[0044] In the embodiment of the present invention, by dyeing the first outer shell layer 201 with a dye material that can transmit light within the target wavelength range and adding diffusion powder, the material of the first outer shell layer 201 can be made to look opaque, making the solar remote control 20 more beautiful; and light transmission performance can be achieved, and the diffusion powder can also make the light transmitted from the first outer shell layer 201 more uniform, thereby improving the photoelectric conversion effect of the solar panel.

[0045] Furthermore, the first solar panel 203 is a double-sided power generation solar panel (specifically, it can be a double-sided micro-light power generation solar panel), and the second side (not shown) of the first solar panel 203 is opposite to the first side 2041 of the circuit board 204, and the first side 2031 of the first solar panel 203 faces the first outer shell layer 201; the first side 2041 of the circuit board 204 is coated with reflective material, which is used to reflect the light passing through the first outer shell layer 201, the button layer 202 and the first solar panel 203 to the second side of the first solar panel 203, so that the second side of the first solar panel 203 absorbs the reflected light and converts it into electrical energy, and then transmits it to the circuit board 204.

[0046] In some embodiments, the reflective material may include reflective ink, or other suitable materials with reflective properties, such as metal materials with good reflective properties (such as aluminum, silver), etc.

[0047] In an embodiment of the present invention, by using a double-sided power generation solar panel as the first solar panel and combining it with a circuit board coated with reflective material, it is possible to set the solar panel size as large as possible, and further enable both sides of the first solar panel to absorb sunlight of a specific wavelength and convert it into electrical energy, thereby effectively increasing the power generation.

[0048] Specifically, the first shell layer 201 has a plurality of through holes 2011, and the first surface 2021 of the key layer 202 has a plurality of buttons 2022, and the plurality of buttons 2022 correspond to the plurality of through holes 2011 one by one, and each button 2022 passes through a corresponding through hole 2011. In this way, each button 2022 of the key layer 202 can be more firmly fixed to the corresponding through hole 2011.

[0049] Furthermore, the function logo on the button 2022 of the button layer 202 is formed by a screen printing process.

[0050] Furthermore, the material of the button layer 202 is transparent rubber, and diffusion powder is added into the transparent rubber.

[0051] By adding diffusion powder, the originally transparent rubber material button layer 202 can appear opaque in appearance while retaining a certain degree of light transmittance; further combined with the screen printing process, each button 2022 can appear black or colorful, thereby achieving the light transmittance effect of the button layer 202 without affecting the appearance of the remote control.

[0052] Reference Figure 3 , Figure 3 FIG. 2 is an exploded view of another solar remote controller 30 according to an embodiment of the present invention. Figure 2 The difference between the solar remote controller 20 shown is that the solar remote controller 30 can include Figure 2 Each device structure shown may further include a second solar panel 205 .

[0053] Specifically, the second solar panel 205 is located between the circuit board 204 and the second outer shell layer 206; the second outer shell layer 206 can transmit light within the target wavelength range, and the wavelength range of light that can be absorbed by the second solar panel 205 is within the target wavelength range; wherein, the second solar panel 205 absorbs the light transmitted through the second outer shell layer 206 and converts it into electrical energy, which is then transmitted to the circuit board 204 to power the solar remote control 20.

[0054] It is understandable that in the prior art, the light transmittance and solar power generation performance of the bottom or back of the solar remote control are usually not considered, and therefore a completely opaque material is often used to make the outer shell layer at the bottom of the remote control; in comparison, this embodiment not only takes into account the light transmittance of the front side (corresponding to the first outer shell layer 201) of the solar remote control, but also further takes into account the light transmittance and solar power generation performance of the bottom or back side (corresponding to the second outer shell layer 206) of the solar remote control.

[0055] Specifically, on the basis of the first solar panel 203 having a double-sided power generation function, a second solar panel 205 is additionally provided between the circuit board 204 and the second outer shell layer 206 (located at the bottom of the remote control), and the second outer shell layer 206 is provided to be opaque in appearance but light-transmissive, and the wavelength range of light that can be absorbed by the second solar panel 205 is within the wavelength range of light that can be transmitted by the second outer shell layer 206. Thus, the second outer shell layer 206 can protect the device, transmit sunlight of a specific wavelength and be effectively absorbed by the second solar panel 205, while not affecting the aesthetics of the remote control.

[0056] Furthermore, the second solar panel 205 may have overlapping areas with the circuit board 204 and the button layer 202 in the vertical space. In other words, the projections of the second solar panel 205 and the circuit board 204, and the second solar panel 205 and the button layer 202 on the plane where the second outer shell layer 206 is located may have overlapping areas. Therefore, in the case of a limited size of the remote control, the size of the second solar panel 205 may be set as large as possible (for example, close to the size of the second outer shell layer 206), and in an indoor light environment with weak light intensity, the power generation of the second solar panel 205 may be effectively increased to ensure that the remote control has sufficient power supply, thereby improving the user experience.

[0057] Furthermore, in actual use, whether the solar remote control is facing up or the back is facing up, it can achieve the solar power generation effect to achieve a dual power generation effect, especially in an indoor light environment, it can also provide sufficient power generation.

[0058] Furthermore, the second solar panel 205 is a double-sided power generation solar panel, the second side 2052 of the second solar panel 205 is opposite to the second side (not shown) of the circuit board 204, and the first side (not shown) of the second solar panel 205 faces the second outer shell layer 206; the second side of the circuit board 204 is coated with a reflective material for reflecting light passing through the second outer shell layer 206 and the second solar panel 205 to the second side 2052 of the second solar panel 205, so that the second side 2052 of the second solar panel 205 absorbs the reflected light and converts it into electrical energy, which is then transmitted to the circuit board 204.

[0059] In the embodiment of the present invention, by using a double-sided power generation solar panel as the second solar panel 205, and combining it with a circuit board 204 coated with a reflective material, it is possible to set the second solar panel 205 to be as large as possible, and further enable both sides of the second solar panel 205 to absorb sunlight of a specific wavelength and convert it into electrical energy. On this basis, combined with the first solar panel 203 with a double-sided power generation function, the total power generation of the solar remote control can be greatly increased.

[0060] exist Figure 2 and Figure 3 In the figure, two parallel solid lines on the first surface 2031 of the first solar panel 203 and the second surface 2052 of the second solar panel 205 are used to indicate positive and negative electrodes, which are used to achieve electrical connection with the circuit board 204. In the case where the first solar panel 203 and the second solar panel 205 are double-sided power generation solar panels, the second surface of the first solar panel 203 and the first surface of the second solar panel 205 may also be provided with positive and negative electrodes.

[0061] Regarding the electrical connection method between the key layer 202 and the circuit board 204, the specific structure of the circuit board 204 and the electrical connection method between it and the first solar panel 203 and the second solar panel 205, they can be implemented using existing conventional methods, and this application does not impose any restrictions on this.

[0062] The "plurality" appearing in the embodiments of the present application refers to two or more.

[0063] The first, second, etc. descriptions appearing in the embodiments of the present application are only used for illustration and distinction of the description objects. There is no order, nor do they indicate any special limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

[0064] It should be pointed out that the serial numbers of the steps in this embodiment do not limit the execution order of the steps.

[0065] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A solar remote control, characterized in that: include: an opaque first outer shell layer that is transparent to light in a target wavelength range; A key layer, fixed to the first shell layer, the key layer being capable of transmitting at least a portion of the light transmitted through the first shell layer; A first solar panel, located below the key layer, wherein the wavelength range of light that can be absorbed by the first solar panel is within the target wavelength range; A circuit board, located below the first solar panel; The first solar panel absorbs light transmitted through the first shell layer and the button layer and converts it into electrical energy, which is then transmitted to the circuit board to power the solar remote controller.

2. The solar remote controller according to claim 1, characterized in that: The solar remote control further comprises a second solar panel and an opaque second outer shell layer, wherein the second solar panel is located between the circuit board and the second outer shell layer; The second outer shell layer is transparent to light in the target wavelength range, and the wavelength range of light absorbable by the second solar panel is in the target wavelength range; The second solar panel absorbs light transmitted through the second outer shell layer and converts it into electrical energy, which is then transmitted to the circuit board to power the solar remote controller.

3. The solar remote controller according to claim 2, characterized in that: The second solar panel is a double-sided solar panel, and the second side of the second solar panel is opposite to the second side of the circuit board; The second side of the circuit board is coated with reflective material for reflecting light transmitted from the second outer shell layer and the second solar panel to the second side of the second solar panel, so that the second side of the second solar panel absorbs the reflected light and converts it into electrical energy, which is then transmitted to the circuit board.

4. The solar remote controller according to claim 1, characterized in that: The first solar panel is a double-sided solar panel, and the second side of the first solar panel is opposite to the first side of the circuit board; The first surface of the circuit board is coated with reflective material for reflecting light transmitted through the first shell layer, the button layer and the first solar panel to the second surface of the first solar panel, so that the second surface of the first solar panel absorbs the reflected light and converts it into electrical energy, which is then transmitted to the circuit board.

5. The solar remote controller according to claim 3 or 4, characterized in that: The reflective material includes reflective ink.

6. The solar remote controller according to claim 1, characterized in that: The first shell layer has a plurality of through holes, and the first surface of the key layer has a plurality of buttons, the plurality of buttons correspond to the plurality of through holes one by one, and each button passes through a corresponding through hole.

7. The solar remote controller according to claim 6, characterized in that: The function marks on the buttons of the key layer are formed by using a screen printing process.

8. The solar remote controller according to claim 1, characterized in that: The key layer is made of transparent rubber, and diffusion powder is added into the transparent rubber.

9. The solar remote controller according to claim 1, characterized in that: The target wavelength range includes one or more of the following: 600nm-800nm, 300nm-500nm.

10. The solar remote controller according to claim 1, characterized in that: The first outer shell layer is dyed with a dye material that is transparent to light within the target wavelength range.

11. The solar remote controller according to claim 1, characterized in that: The materials for forming the first outer shell layer include: thermoplastic polymer material and diffusion powder.

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