Housing of aerosol generating device and aerosol generating device

Abstract

This application discloses a housing and an aerosol generating apparatus. The housing includes a light-transmitting substrate, a light-shielding layer, a light-transmitting paint layer, and a light-transmitting protective layer. The substrate includes a first side and a second side facing away from each other. The second side of the substrate is closer to the interior of the aerosol generating apparatus than the first side of the substrate. The light-shielding layer covers the first side of the substrate and is configured to block light transmitted through the substrate. The light-shielding layer has a through-hole configured to allow light transmitted through the substrate to pass through. The paint layer covers the side of the light-shielding layer away from the substrate and covers the through-hole. The paint layer has a predetermined color. The protective layer is disposed on the side of the paint layer away from the light-shielding layer and covers the paint layer.

Description

Technical Field

[0001] This application relates to the field of atomization technology, and more specifically, to a housing and an aerosol generating device. Background Technology

[0002] An aerosol generator is a small device that heats and atomizes an aerosol-generating matrix to produce aerosols. An aerosol generator typically includes a housing and a light-emitting component. The light-emitting component is housed within the housing and emits light outwards for the user to observe, thus serving an indicator function. To allow light to pass through, the housing must meet light transmittance requirements; conversely, to shield and protect the components housed within, the housing must meet strength requirements. Using metal or solid-colored plastic would only meet strength requirements, not light transmittance; using a light-transmitting material would only meet light transmittance requirements, not strength requirements. To balance light transmittance and strength, current housings are typically made of metal or solid-colored plastic with perforations for light to pass through, and a light-transmitting element made of a light-transmitting material is installed within these perforations. However, part of the shell is made of metal or solid-color plastic, while the other part is made of light-transmitting material. There are inherent differences in light transmittance, surface texture and color presentation between different materials, resulting in poor consistency. Moreover, there are seams between the light-transmitting part and the inner wall of the perforation, which makes it easy for water to enter and dirt to accumulate, while also giving the overall appearance of the shell a fragmented feel. Utility Model Content

[0003] This application provides a housing for an aerosol generating device and an aerosol generating device.

[0004] In a first aspect, this application provides a housing for an aerosol generating apparatus. The housing includes a light-transmitting substrate, a light-shielding layer, a light-transmitting paint layer, and a light-transmitting protective layer. The substrate includes a first side and a second side facing away from each other. The second side of the substrate is closer to the interior of the aerosol generating apparatus than the first side of the substrate. The light-shielding layer covers the first side of the substrate and is configured to block light transmitted through the substrate. The light-shielding layer has a through-hole configured to allow light transmitted through the substrate to pass through. The paint layer covers the side of the light-shielding layer away from the substrate and covers the through-hole. The paint layer has a predetermined color. The protective layer is disposed on the side of the paint layer away from the light-shielding layer and covers the paint layer.

[0005] In some embodiments, the substrate includes a first region formed around a region corresponding to the through hole and a second region adjoining the first region, the first region being configured to correspond to a button of the aerosol generating device, the thickness of the first region being less than the thickness of the second region, and a second surface of the substrate being closer to the first surface of the substrate at the first region than at the second region.

[0006] In some embodiments, the thickness of the first region is greater than or equal to 0.5 mm and less than or equal to 0.7 mm.

[0007] In some embodiments, the thickness of the paint layer is greater than or equal to 8 μm and less than or equal to 18 μm.

[0008] In some embodiments, the light transmittance of the paint layer is greater than or equal to 5% and less than or equal to 80%.

[0009] In some embodiments, the thickness of the protective layer is greater than or equal to 18 μm and less than or equal to 26 μm.

[0010] In some embodiments, the light-shielding layer includes a black first primer that covers a first surface of the substrate, and the through-holes penetrate the first primer.

[0011] In some embodiments, the light-shielding layer includes a black first primer and a second primer, the first primer covering a first surface of the substrate and the second primer covering the side of the first primer away from the substrate, and the through-hole penetrating the first primer and the second primer.

[0012] In some embodiments, the thickness of the first primer is greater than or equal to 10 μm and less than or equal to 13 μm.

[0013] In some embodiments, when the light-shielding layer comprises a black first primer and a second primer, the second primer comprises a primer film, the lightness of the primer film being less than a preset first lightness threshold, and the thickness of the primer film being greater than or equal to 12 μm and less than or equal to 18 μm.

[0014] In some embodiments, when the light-shielding layer comprises a black first primer and a second primer, the second primer comprises multiple layers of the primer film, wherein the lightness of a single layer of the primer film is greater than a preset second lightness threshold, and the thickness of a single layer of the primer film is greater than or equal to 12 μm and less than or equal to 18 μm.

[0015] In some embodiments, the housing further includes a light-diffusing film disposed on a second surface of the substrate, the light-diffusing film covering at least a first region of the substrate and configured to diffuse light entering the light-diffusing film.

[0016] Secondly, this application provides an aerosol generating apparatus. The aerosol generating apparatus includes a housing and electronic components as described in any of the above embodiments. The electronic components are housed within the housing and include a light source and a button. The light source is configured to emit light, and the through-hole allows at least a portion of the emitted light to pass through. In the thickness direction of the substrate, the button is opposite to a first region of the substrate, and the button can be triggered when the first region is pressed.

[0017] In some embodiments, the through hole is annular, the light source includes a plurality of light-emitting units arranged in a ring and opposite to the through hole, the plurality of light-emitting units are configured to emit light toward the through hole, and the button is located within the annular space formed by the plurality of light-emitting units.

[0018] In the aerosol generating device and its housing of this application, a light-transmitting substrate, a light-shielding layer, a light-transmitting paint layer, and a light-transmitting protective layer are arranged sequentially. Through holes are provided on the light-shielding layer to allow light transmitted from the substrate to pass through. Part of the light transmitted from the substrate is blocked by the light-shielding layer, while the other part passes through the through holes, then sequentially through the light-transmitting paint layer and the light-transmitting protective layer, and is observed by the user from the outside of the housing. Thus, the housing presents a light-transmitting marked area corresponding to the through holes and a non-marked area corresponding to the area outside the through holes. The non-marked area of ​​the housing is made of the same material from the inside to the outside in the thickness direction, with no difference in light transmittance, surface texture, or color presentation, resulting in excellent consistency. Furthermore, the protective layer covers the paint layer, the paint layer covers the light-shielding layer, and the paint layer covers the through holes, leaving no gaps on the housing, providing excellent waterproof performance and preventing dirt accumulation. The overall appearance of the housing is seamless and has good integrity.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the housing of an aerosol generating apparatus according to some embodiments of this application.

[0022] Figure 2 yes Figure 1An exploded view of the shell shown;

[0023] Figure 3 yes Figure 1 A three-dimensional structural diagram of the shell shown from another perspective;

[0024] Figure 4 yes Figure 3 An exploded view of the shell shown;

[0025] Figure 5 This is a three-dimensional structural schematic diagram of an aerosol generating apparatus according to some embodiments of this application;

[0026] Figure 6 yes Figure 5 A partially exploded schematic diagram of the aerosol generating device shown.

[0027] The reference numerals in the detailed embodiments are as follows:

[0028] Aerosol generating device 100; housing 10; accommodating cavity 101; marking area 103; non-marking area 105;

[0029] Matrix 11; First surface 111; Second surface 113; First region 115; Second region 117;

[0030] Light-shielding layer 13; through-hole 131; first primer 133; second primer 135;

[0031] 15 layers of paint;

[0032] Protective layer 17;

[0033] Homogeneous film 19;

[0034] Electronic component 30; light source 31; button 33. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0036] In the description of this application, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "horizontal", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] In this application, unless otherwise expressly specified and limited, the first feature being "on" or "below" the second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0040] An aerosol generator is a small device that heats and atomizes an aerosol-generating matrix to produce aerosols. An aerosol generator typically includes a housing and a light-emitting component. The light-emitting component is housed within the housing and emits light outwards for the user to observe, thus serving an indicator function. To allow light to pass through, the housing must meet light transmittance requirements; conversely, to shield and protect the components housed within, the housing must meet strength requirements. Using metal or solid-colored plastic would only meet strength requirements, not light transmittance; using a light-transmitting material would only meet light transmittance requirements, not strength requirements. To balance light transmittance and strength, current housings are typically made of metal or solid-colored plastic with perforations for light to pass through, and a light-transmitting element made of a light-transmitting material is installed within these perforations. However, one part of the casing is made of metal or solid-color plastic, while the other part is made of a translucent material. These different materials have inherent differences in translucency, surface texture, and color presentation, making perfect integration difficult. Furthermore, there are seams between the translucent part and the perforated inner wall, which easily allow water to enter and dirt to accumulate, while also creating a disjointed appearance for the entire casing. To address this issue, this application provides a casing 10 for an aerosol generating device. Figures 1 to 4 (as shown) and aerosol generating device 100 ( Figure 5 and Figure 6 (As shown).

[0041] Please see Figure 1 and Figure 2 In a first aspect, this application provides a housing 10 for an aerosol generating apparatus. The housing 10 includes a light-transmitting substrate 11, a light-shielding layer 13, a light-transmitting paint layer 15, and a light-transmitting protective layer 17. The substrate 11 includes a first surface 111 and a second surface 113 facing away from each other. The second surface 113 of the substrate 11 is closer to the interior of the aerosol generating apparatus 100 than the first surface 111 of the substrate 11. The light-shielding layer 13 covers the first surface 111 of the substrate 11 and is configured to block light transmitted from the substrate 11. The light-shielding layer 13 has a through-hole 131, which is configured to allow light transmitted from the substrate 11 to pass through. The paint layer 15 covers the side of the light-shielding layer 13 away from the substrate 11 and covers the through-hole 131. The paint layer 15 has a predetermined color. The protective layer 17 is disposed on the side of the paint layer 15 away from the light-shielding layer 13 and covers the paint layer 15.

[0042] The aerosol generating device 100 is a structure capable of generating aerosols by acting on an aerosol generating product through resistance heating, electromagnetic heating, microwave heating, laser irradiation, infrared light irradiation, ultrasound, or mechanical vibration. For example, the aerosol generating device 100 generates aerosols by heating the aerosol generating product with infrared light irradiation. The aerosol generating product is used to be heated and generate aerosols. The aerosol generating product includes an atomizing medium. The atomizing medium is an element that can generate aerosols after being heated. The atomizing medium can be turned into fine particles by heating or ultrasonic vibration and mixed with air to form an aerosol. The atomizing medium can be in solid or liquid form. When the atomizing medium is all-solid, it can be prepared by processes such as rolling or thickening. It should be noted that in some embodiments, the atomizing medium can be a cylindrical structure similar to a cigarette, or a sheet-like structure, strip-like structure, or block-like structure. Aerosols can be visible or invisible and may include vapors (e.g., fine particulate matter in a gaseous state, which are typically liquid or solid at room temperature) as well as liquid droplets of gas and condensed vapor. In the case of the aerosol generating apparatus 100 shown in the insert figure of the aerosol generating article, the aerosol generating apparatus 100 is capable of generating aerosols. As used herein, "aerosol" encompasses aerosols generated when the atomizing medium in a heated aerosol generating article is heated.

[0043] The housing 10 is a structure for mounting or accommodating other components in the aerosol generating apparatus 100. The housing 10 of this application is provided with a accommodating cavity 101 (…). Figure 6 As shown), the accommodating cavity 101 is used to accommodate the bracket, heating element, cover, dustproof component, and electronic component 30 of the aerosol generating device 100. Figure 6 The housing 10 protects other components, such as those shown in the diagram. Specifically, the housing 10 includes a substrate 11, a light-shielding layer 13, a paint layer 15, and a protective layer 17. The substrate 11, light-shielding layer 13, paint layer 15, and protective layer 17 are sequentially arranged in a direction from the center of the accommodating cavity 101 outwards towards the housing 10 (typically perpendicular to the length direction L of the aerosol generating device 100, but can be the thickness direction Z of the aerosol generating device 100).

[0044] More specifically, the base 11 is the main structure within the housing 10 that houses the other components mentioned above (such as...). Figures 2-4(As shown). The substrate 11 is made of a light-transmitting material. When light emitted by the electronic components 30 in the accommodating cavity 101 is emitted to the outside of the housing 10, the light can pass through the substrate 11. In some embodiments of this application, the substrate 11 is made of light-transmitting polycarbonate (PC). Using PC material for the substrate 11 has several advantages. First, the substrate 11 has high transparency, which greatly increases the transmittance of light from the accommodating cavity 101, ensuring visibility. Second, the substrate 11 has excellent impact resistance and toughness, maintaining good toughness even at low temperatures, providing good protection for other internal components. Third, the substrate 11 has good heat resistance and a high heat distortion temperature, maintaining good mechanical properties over a wide temperature range, making it particularly suitable for aerosol generating devices 100 that require high internal heat generation to heat aerosol generating products and generate aerosols. Fourth, the substrate 11 has a low density, resulting in a smaller housing 10, making the aerosol generating device 100 lighter and easier to process and transport. The substrate 11 is typically produced by injection molding. The substrate 11 includes a first surface 111 and a second surface 113 facing away from each other. The first surface 111 and the second surface 113 of the substrate 11 are located on opposite sides of the substrate 11 in the thickness direction Z, and the first surface 111 of the substrate 11 is outside the receiving cavity 101, while the second surface 113 of the substrate 11 is located inside the receiving cavity 101.

[0045] The light-shielding layer 13 is a structure in the housing 10 used to block light. The light-shielding layer 13 serves several purposes: firstly, it fills the microscopic gaps in the substrate 11, improving adhesion; secondly, it blocks the migration of metal particles, preventing corrosion; and thirdly, it passivates the surface energy of the substrate 11, enhancing interlayer bonding. The light-shielding layer 13 can be formed on the first surface 111 of the substrate 11 using a spraying process. Since the light-shielding layer 13 blocks light transmitted from the substrate 11, through-holes 131 need to be formed in the light-shielding layer 13 to allow the user to observe the light from outside the housing 10. Light transmitted from the substrate 11 can pass through the through-holes 131 and be observed by the user from outside the housing 10. In this embodiment, the through-holes 131 can be formed in the light-shielding layer 13 using a laser engraving process. In some embodiments, the light-shielding layer 13 completely covers the first surface 111 of the substrate 11.

[0046] The paint layer 15 is a structure in the housing 10 that serves to represent color. The paint layer 15 can also be called a "middle paint layer," and its color is the color that the user sees from the outside of the housing 10. The predetermined colors of the paint layer 15 include, but are not limited to, red, blue, or gold. The paint layer 15 is made of a light-transmitting material, so that some of the light transmitted from the substrate 11 is blocked by the light-shielding layer 13, while the other part passes through the through-hole 131 and then through the light-transmitting paint layer 15. The paint layer 15 serves several purposes: firstly, it allows for precise hue control of the housing 10; secondly, it establishes a light transmission gradient; and thirdly, it can support special effects, such as the directional arrangement of metallic / pearl particles. In this embodiment, the paint layer 15 is formed on the side of the light-shielding layer 13 away from the substrate 11 by a spraying process. In some embodiments, the paint layer 15 completely covers the light-shielding layer 13, and the through-hole 131 is also covered by the paint layer 15.

[0047] The protective layer 17 is a structure within the housing 10 that protects the structure below it. The protective layer 17 is made of a light-transmitting material, so that some light transmitted from the substrate 11 is blocked by the light-shielding layer 13, while the rest passes through the through-hole 131, then sequentially through the light-transmitting paint layer 15 and the light-transmitting protective layer 17, and is observed by the user from the outside of the housing 10. In this embodiment, the protective layer 17 is a topcoat formed by a spraying process on the side of the paint layer 15 away from the light-shielding layer 13. In some embodiments, the protective layer 17 completely covers the paint layer 15. The protective layer 17 can form a dense cross-linked network, therefore, the protective layer 17 has high hardness and wear resistance, providing excellent protection for the paint layer 15. In some embodiments, a UV absorber is added to the protective layer 17 to prevent yellowing, ensuring the aesthetic appearance of the housing 10.

[0048] In the housing 10 of the aerosol generating device 100 of this application, a light-transmitting substrate 11, a light-shielding layer 13, a light-transmitting paint layer 15, and a light-transmitting protective layer 17 are arranged sequentially. A through hole 131 is provided on the light-shielding layer 13 to allow light transmitted from the substrate 11 to pass through. Part of the light transmitted from the substrate 11 is blocked by the light-shielding layer 13, and the other part passes through the through hole 131, and then passes through the light-transmitting paint layer 15 and the light-transmitting protective layer 17 in sequence, and is observed by the user from the outside of the housing 10. Thus, the housing 10 presents a light-transmitting marking area 103 corresponding to the through hole 131 and a non-marking area 105 corresponding to the area outside the through hole 131. The non-marking area 105 of the housing 10 has the same material from the inside to the outside in the thickness direction Z, and there is no difference in light transmittance, surface texture and color presentation, resulting in good consistency. Moreover, the protective layer 17 covers the paint layer 15, the paint layer 15 covers the light-shielding layer 13, and the paint layer 15 covers the through hole 131. There are no gaps on the housing 10, the waterproof performance is excellent, and it will not accumulate dirt. The appearance of the entire housing 10 is seamless and has good integrity.

[0049] Please see Figure 2 and Figure 6 In some embodiments, the substrate 11 includes a first region 115 formed around the region corresponding to the through hole 131 and a second region 117 connected to the first region 115. The first region 115 is configured to correspond to the button 33. The thickness of the first region 115 is less than the thickness of the second region 117. The second surface 113 of the substrate 11 is closer to the first surface 111 of the substrate 11 at the first region 115 than at the second region 117.

[0050] In some embodiments, the through-hole 131 may be annular, and the annulus may be circular, square, or other polygonal annulus, etc. Further, in some embodiments, the through-hole 131 may be an open annulus. Specifically, in some examples, the beginning and end of the open annulus are spaced apart, that is, the open annulus has only one discontinuity. In other examples, the open annulus has multiple discontinuities, such as... Figure 2 The diagram shows two discontinuities. It's understandable that an open loop can have three, four, five, or even more discontinuities. In other examples, the loop can also be a closed loop.

[0051] In the substrate 11, the region surrounding the through-hole 131 is designated as the first region 115, while the region excluding the first region 115 is designated as the second region 117. In such a case... Figure 2 When the through-hole 131 is an open ring, the first region 115 and the second region 117 are connected. Of course, when the through-hole 131 is a closed ring, the first region 115 and the second region 117 are spaced apart, i.e., separated by the through-hole 131. Additionally, as described above, the aerosol generating device 100 may also include an electronic component 30, which includes a button 33. The button 33 is configured to be triggered to control the aerosol generating device 100 to turn on and / or turn off, or to control the aerosol generating device 100 to perform other operations, which are not listed here. In this embodiment, the first region 115 is configured to correspond to the button 33, so that the user can trigger the button 33 by pressing the first region 115, facilitating the triggering of the button 33.

[0052] Furthermore, the thickness of the first region 115 is less than the thickness of the second region 117. That is, the substrate 11 is thinned in the first region 115. When the same amount of pressing force is applied, the thinned first region 115 is more likely to deform and contact the button 33 than the first region with the same thickness as the second region 117, which can improve the accuracy and convenience of operating the button 33.

[0053] Furthermore, the second surface 113 of the substrate 11 is closer to the first surface 111 of the substrate 11 in the first region 115 than in the second region 117. That is, the substrate 11 is thinned in the first region 115, specifically on the second surface 113 near the receiving cavity 101, rather than on the first surface 111 outside the receiving cavity 101. This ensures the flatness of the outer side of the substrate 11 (the side observed by the user) and avoids the problem of incomplete coating of at least one of the light-shielding layer 13, paint layer 15, and protective layer 17 caused by the difference in step between the first region 115 and the second region 117. This facilitates the subsequent comprehensive coating of the light-shielding layer 13, paint layer 15, and protective layer 17 onto the substrate 11 through a spraying process.

[0054] Please continue reading. Figure 2 In some embodiments, the thickness of the first region 115 is greater than or equal to 0.5 mm and less than or equal to 0.7 mm.

[0055] Specifically, the thickness of the first region 115 is the thickness of the base 11 corresponding to the first region 115. The thickness of the first region 115 can affect the ease of pressing by the user, as well as the structural strength of the base 11, and consequently the structural strength of the shell 10. The thickness of the first region 115 can be any one or any two of the following: 0.5mm, 0.51mm, 0.53mm, 0.57mm, 0.59mm, 0.60mm, 0.63mm, 0.65mm, 0.68mm, and 0.7mm. If the thickness of the first region 115 is less than 0.5mm, it is too thin and, after prolonged pressing, is prone to deformation, forming irreversible dents, affecting the appearance, or even breaking completely, making it impossible to press and trigger the button 33 normally, and also causing problems such as water ingress and dirt ingress. If the thickness of the first region 115 is greater than 0.7mm, it is too thick and not easily deformed when pressed, making it inconvenient to trigger the button 33. Therefore, the thickness of the first area 115 is greater than or equal to 0.5mm and less than or equal to 0.7mm, which can facilitate the triggering of the button 33 and avoid problems such as water ingress and dirt ingress caused by the first area 115 being damaged.

[0056] Please refer to [link / reference] Figure 2 In some embodiments, the thickness of the paint layer 15 is greater than or equal to 8 μm and less than or equal to 18 μm.

[0057] Specifically, the thickness of the paint layer 15 can affect the hue of the shell 10 and also the bonding stability of the paint layer 15. The thickness of the paint layer 15 can be any value between any two of the following: 8μm, 8.5μm, 8.8μm, 9μm, 9.3μm, 10μm, 11μm, 13μm, 14μm, 14.5μm, 16μm, 16.5μm, 17μm, and 18μm. If the thickness of the paint layer 15 is less than 8μm, the paint layer 15 is too thin, and the hue of the shell 10 will not be well presented. If the thickness of the paint layer 15 is greater than 18μm, the paint layer 15 is too thick, which will cause oil accumulation during the spraying process, and because it is too thick, it cannot dry completely, which can easily lead to problems such as cracking and paint peeling. Therefore, the thickness of the paint layer 15 is greater than or equal to 8μm and less than or equal to 18μm. This not only allows the shell 10 to present a better hue, but also ensures that when the paint layer 15 is sprayed using a spraying process, there will be no cracking or paint peeling when the paint layer 15 is bonded to the light-shielding layer 13. This ensures the strong bond between the paint layer 15 and the light-shielding layer 13.

[0058] Please see Figure 2 In some embodiments, the light transmittance of the paint layer 15 is greater than or equal to 5% and less than or equal to 80%.

[0059] Specifically, the light transmittance of the paint layer 15 can be any value between any two of any one of 5%, 8%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, and 80%. If the light transmittance of the paint layer 15 is less than 5%, the light passing through the through-hole 131 cannot penetrate the paint layer 15, and the user cannot observe the indicator light of the light source 31, so the light cannot serve its indicator function. If the light transmittance of the paint layer 15 is greater than 80%, since the light is divergent, the area on the paint layer 15 corresponding to the through-hole 131 (hereinafter referred to as the "through-hole 131 corresponding area") can transmit light, and the nearby area on the paint layer 15 adjacent to the "through-hole 131 corresponding area" will also transmit more light. That is, when the light source 31 emits light, the light intensity transmitted by the "through-hole 131 corresponding area" and the "nearby area" is similar, causing the light emitted by the light source 31 to not serve its indicator function. Therefore, the light transmittance of the paint layer 15 is greater than or equal to 5% and less than or equal to 80%. On the one hand, this allows the light to penetrate the paint layer 15 and be observed by the user; on the other hand, it establishes a light transmission gradient, allowing the light emitted by the light source 31 to serve its indicator function.

[0060] Please see Figure 2 In some embodiments, the thickness of the protective layer 17 is greater than or equal to 18 μm and less than or equal to 26 μm.

[0061] Specifically, the thickness of the protective layer 17 can be any one or any two of the following: 18μm, 18.5μm, 18.8μm, 19μm, 19.3μm, 20μm, 21μm, 23μm, 24μm, 24.5μm, 25μm, 25.5μm, and 26μm. If the thickness of the protective layer 17 is less than 18μm, it is too thin and easily scratched, resulting in paint peeling, and its protective effect is poor. If the thickness of the protective layer 17 is greater than 26μm, it is too thick, which will cause oil accumulation during the spraying process, and because it is too thick, it cannot dry completely, easily leading to cracking, paint peeling, and other problems. Therefore, the thickness of the protective layer 17 is greater than or equal to 18μm and less than or equal to 26μm. It can not only protect the internal structure, such as the paint layer 15, but also ensure that there will be no cracking or paint peeling when the protective layer 17 is applied to the paint layer 15 using a spraying process. This ensures the strong bond between the protective layer 17 and the paint layer 15.

[0062] Please see Figure 2 In some embodiments, the light-shielding layer 13 includes a black first primer 133, which covers the first surface 111 of the substrate 11, and the through-hole 131 penetrates the first primer 133.

[0063] In other embodiments, the light-shielding layer 13 includes a black first primer 133 and a second primer 135, the first primer 133 covering a first surface 111 of the substrate 11, the second primer 135 covering the side of the first primer 133 away from the substrate 11, and a through hole 131 penetrating the first primer 133 and the second primer 135.

[0064] Whether the light-shielding layer 13 includes a first primer 133 or a second primer 135, the first primer 133 is a film layer that serves to block light and is typically black. The first primer 133 is formed on the substrate 11 through a spraying process. Furthermore, the thickness of the first primer 133 is greater than or equal to 10 μm and less than or equal to 13 μm. The thickness of the first primer 133 can be any value between any two of the following: 10 μm, 10.5 μm, 10.8 μm, 11 μm, 11.3 μm, 11.5 μm, 11.8 μm, 12 μm, 12.4 μm, 12.5 μm, 12.6 μm, 12.9 μm, and 13 μm. If the thickness of the first primer 133 is less than 10 mm, the first primer 133 is too thin, and its light-shielding effect is poor. If the thickness of the first primer 133 is greater than 13μm, it will be too thick, resulting in oil accumulation during spraying. Furthermore, due to its excessive thickness, it cannot dry completely, easily leading to cracking and paint peeling. Therefore, the thickness of the first primer 133 should be greater than or equal to 10μm and less than or equal to 13μm. This ensures good light blocking while preventing cracking and paint peeling when the first primer 133 is applied to the first surface 111 of the substrate 11, guaranteeing a strong bond between the first primer 133 and the substrate 11.

[0065] In embodiments where the light-shielding layer 13 includes a black first primer 133 and a black second primer 135, the second primer 135 serves to make the color of the housing 10 more vibrant, bright, and delicate. Specifically, when light from outside the housing 10 shines on the housing 10, the light is reflected by the second primer 135 and can be observed by the user. Therefore, the user can observe the color of the second primer 135, and thus, the hue of the housing 10 can be controlled by forming different colors of the second primer 135. The second primer 135 can be formed on the first primer 133 using a spraying process.

[0066] Specifically, in one example, the second primer 135 includes a primer film. The lightness of the primer film is less than a preset first lightness threshold, and the thickness of the primer film is greater than or equal to 12 μm and less than or equal to 18 μm. Here, lightness refers to how bright or dark a color appears. The first lightness threshold is a known lightness threshold used to measure a reasonable empirical value for the lightness of the color presented by the casing 10, and can be set before leaving the factory. When the lightness is less than the first lightness threshold, it indicates that the color of this primer film (i.e., the second primer 135) is relatively dark, and the color presented by the casing 10 (the color seen by the user) will not appear dull. The thickness of the primer film, greater than or equal to 12 μm and less than or equal to 18 μm, not only allows for good color representation of the primer film but also facilitates the spraying process, ensuring a strong bond between the sprayed primer film and the first primer 133.

[0067] In other examples, the second primer 135 comprises multiple primer films. The lightness of a single primer film is greater than a preset second lightness threshold, and the thickness of a single primer film is greater than or equal to 12 μm and less than or equal to 18 μm. The second lightness threshold is also a known lightness threshold, a reasonable empirical value used to measure the lightness of the color presented by the appearance of the housing 10, and can be set before leaving the factory. When the lightness is greater than the second lightness threshold, it indicates that the color of that primer film (i.e., the second primer 135) is brighter. Therefore, the second primer 135 needs to comprise multiple primer films so that the color presented by the housing 10 (the color seen by the user) does not appear dull. The thickness of a single primer film is greater than or equal to 12 μm and less than or equal to 18 μm, which on the one hand, can well present the color of the second primer 135, and on the other hand, facilitates the spraying process and ensures the strong adhesion of each primer film after spraying.

[0068] Please see Figure 3 and Figure 4 In some embodiments, the housing 10 further includes a light-diffusing film 19 disposed on the second surface 113 of the substrate 11. The light-diffusing film 19 covers at least the first region 115 of the substrate 11 and the through hole 131, and is configured to diffuse light entering the light-diffusing film 19.

[0069] The light sources 31 in the electronic component 30 are typically arranged in a point or line pattern. Direct illumination onto the substrate 11 will create "bright spots" and "dark areas." The light-diffusing film 19 is an optical functional film layer disposed on the second surface 113 of the substrate 11. It has light-scattering structures or particles inside, which are used to diffuse and homogenize the incident light (the light emitted by the light source 31). The light-diffusing film 19 at least covers the thinned light-transmitting area (first area 115) and the through-hole 131 on the substrate 11 corresponding to the button 33. Through scattering, it eliminates the light spots or uneven brightness generated by the light source 31, ensuring that the light subsequently transmitted through the specific structure of the housing 10 (such as the through-hole 131 of the light-shielding layer 13, the paint layer 15, and the protective layer 17) presents a uniform brightness and soft visual effect.

[0070] Please see Figure 2 , Figure 5 and Figure 6 Secondly, this application provides an aerosol generating apparatus 100. The aerosol generating apparatus 100 includes a housing 10 as described in any of the above embodiments and an electronic component 30. The electronic component 30 is housed within the housing 10 and includes a light source 31 and a button 33. The light source 31 is configured to emit light, and a through-hole 131 allows at least a portion of the light emitted by the light source 31 to pass through. In the thickness direction Z of the substrate 11, the button 33 is opposite to a first region 115 of the substrate 11, and the button 33 can be triggered when the first region 115 is pressed.

[0071] In the aerosol generating device 100 of this application, a light-transmitting substrate 11, a light-shielding layer 13, a light-transmitting paint layer 15, and a light-transmitting protective layer 17 are sequentially arranged in the housing 10. A through hole 131 is provided on the light-shielding layer 13 to allow light transmitted from the substrate 11 to pass through. Part of the light transmitted from the substrate 11 is blocked by the light-shielding layer 13, and the other part passes through the through hole 131, and then passes through the light-transmitting paint layer 15 and the light-transmitting protective layer 17 in sequence, and is observed by the user outside the housing 10. Thus, the housing 10 presents a light-transmitting marking area 103 corresponding to the through hole 131 and a non-marking area 105 corresponding to the area outside the through hole 131. The non-marking area 105 of the housing 10 has the same material from the inside to the outside in the thickness direction Z, and there is no difference in light transmittance, surface texture and color presentation, resulting in good consistency. Moreover, the protective layer 17 covers the paint layer 15, the paint layer 15 covers the light-shielding layer 13, and the paint layer 15 covers the through hole 131. There are no gaps on the housing 10, the waterproof performance is excellent, and it will not accumulate dirt. The appearance of the entire housing 10 is seamless and has good integrity.

[0072] Please see Figure 5 and Figure 6In some embodiments, the through hole 131 is annular, and the light source 31 includes a plurality of light-emitting units 311 arranged in a ring and opposite to the through hole 131. The plurality of light-emitting units are configured to emit light toward the through hole 131, and the button 33 is located within the annular space formed by the plurality of light-emitting units 311. The plurality of light-emitting units may be LED beads.

[0073] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. Furthermore, other implementation methods can be derived from the above embodiments, allowing for structural and logical substitutions and changes without departing from the scope of this disclosure.

[0074] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A housing for an aerosol generating device, characterized in that, include: The light-transmitting substrate includes a first side and a second side facing away from each other, wherein the second side of the substrate is closer to the interior of the aerosol generating device than the first side of the substrate; A light-shielding layer is provided on a first surface of the substrate. The light-shielding layer is configured to block light transmitted from the substrate. The light-shielding layer has through holes configured to allow light transmitted from the substrate to pass through. A translucent colored paint layer covers the side of the light-shielding layer away from the substrate and encompasses the through-holes; the colored paint layer has a predetermined color; and A light-transmitting protective layer is disposed on the side of the paint layer away from the light-shielding layer and covers the paint layer.

2. The housing according to claim 1, characterized in that, The substrate includes a first region formed around the region corresponding to the through hole and a second region connected to the first region. The first region is configured to correspond to a button of the aerosol generating device. The thickness of the first region is less than the thickness of the second region. The second surface of the substrate is closer to the first surface of the substrate in the first region than in the second region.

3. The housing according to claim 2, characterized in that, The thickness of the first region is greater than or equal to 0.5 mm and less than or equal to 0.7 mm.

4. The housing according to claim 1, characterized in that, The thickness of the paint layer is greater than or equal to 8 μm and less than or equal to 18 μm; and / or, The light transmittance of the paint layer is greater than or equal to 5% and less than or equal to 80%; and / or, The thickness of the protective layer is greater than or equal to 18 μm and less than or equal to 26 μm.

5. The housing according to claim 1, characterized in that, The light-shielding layer includes a black first primer that covers a first surface of the substrate, and the through-holes penetrate the first primer; or... The light-shielding layer includes a black first primer and a second primer. The first primer covers a first surface of the substrate, and the second primer covers the side of the first primer away from the substrate. The through-hole penetrates the first primer and the second primer.

6. The housing according to claim 5, characterized in that, The thickness of the first primer is greater than or equal to 10 μm and less than or equal to 13 μm.

7. The housing according to claim 5, characterized in that, In the case where the light-shielding layer comprises a black first primer and a black second primer: The second primer includes a primer film, wherein the lightness of the primer film is less than a preset first lightness threshold, and the thickness of the primer film is greater than or equal to 12 μm and less than or equal to 18 μm; or, The second primer comprises multiple layers of the primer film, wherein the brightness of the color of a single layer of the primer film is greater than a preset second brightness threshold, and the thickness of a single layer of the primer film is greater than or equal to 12 μm and less than or equal to 18 μm.

8. The housing according to claim 1, characterized in that, Also includes: A light-diffusing film is disposed on the second surface of the substrate. The light-diffusing film covers at least a first region of the substrate and the through-hole, and is configured to diffuse light entering the light-diffusing film.

9. An aerosol generating device, characterized in that, include: The housing as described in any one of claims 1-8; and An electronic component is housed within the housing. The electronic component includes a light source and a button. The light source is configured to emit light. The through-hole allows at least a portion of the light emitted by the light source to pass through. In the thickness direction of the substrate, the button is opposite to a first region of the substrate. When the first region is pressed, the button can be triggered.

10. The aerosol generating apparatus according to claim 9, characterized in that, The through hole is annular, the light source includes multiple light-emitting units, the multiple light-emitting units are arranged in a ring and are opposite to the through hole, the multiple light-emitting units are configured to emit light toward the through hole, and the button is located within the annular space formed by the multiple light-emitting units.

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