Luminous tire

Abstract

The application discloses a luminous tire, which comprises tire side rubber and a luminous layer, wherein the luminous layer is arranged on the surface of the tire side rubber, the luminous layer is doped with a fluorescent substance, the fluorescent substance can absorb heat of the tire by thermal excitation luminescence, and the fluorescent substance can be excited to luminescence by temperature difference. The tire side rubber is provided with the luminous layer, and the fluorescent substance is doped into the luminous layer, so that the fluorescent substance falling and uneven distribution caused by the fluorescent substance being coated on the surface of the tire are avoided, the tire has stable luminescence effect, the fluorescent substance can be excited to luminescence by heat, so that heat generated by the tire in the use process is absorbed, the tire is cooled, and the service life of the tire is prolonged; and the fluorescent substance can also be excited to luminescence by temperature difference, so that heat on the surface of the tire and heat of sunlight are fully utilized, and the continuity and stability of tire luminescence are ensured.

Description

Technical Field

[0001] This application relates to the field of vehicle tire technology, and in particular to a luminous tire. Background Technology

[0002] Current colored tire manufacturing processes include painting, applying rubber sheets, white sidewalls, and full-color and half-color processes, which have problems such as easy color change, easy peeling, and high cost.

[0003] Luminous tires are tires that can glow at night or even during the day, providing decoration and safety warning for vehicles. Luminous tires can solve the aforementioned problems of colored tires.

[0004] In related technologies, fluorescent powder is coated onto the raised lettering on the side of the tire. However, because the tire needs to roll at high speed during use, the fluorescent powder is prone to falling off, resulting in uneven distribution of the fluorescent powder, poor fluorescence effect, and short duration. Utility Model Content

[0005] This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a luminous tire that can achieve a stable and reliable luminous effect.

[0006] According to a first aspect embodiment of the present application, the luminous tire includes a tire sidewall rubber and a luminescent layer. The luminescent layer is disposed on the surface of the tire sidewall rubber. The luminescent layer is doped with a phosphor. The phosphor can absorb heat from the tire and emit light through thermal excitation, and the phosphor can emit light through temperature difference excitation.

[0007] The luminous tire according to the embodiments of this application has at least the following beneficial effects: the tire sidewall rubber is provided with a luminescent layer, and phosphors are incorporated into the luminescent layer, avoiding the phenomenon of phosphors falling off and uneven distribution caused by phosphors being coated on the tire surface, so that the tire has a stable luminescent effect; the phosphors can emit light through thermal excitation, thereby absorbing the heat generated by the tire during use, assisting in tire cooling and improving tire lifespan; the phosphors can also emit light through temperature difference, making full use of the heat on the tire surface and the heat of sunlight, ensuring the continuity and stability of tire luminescence.

[0008] According to some embodiments of this application, the interior of the light-emitting layer is provided with an EL component, and the light emitted by the EL component when it is powered on can excite the phosphor to emit light.

[0009] According to some embodiments of this application, the light-emitting layer is doped with a phosphor, which emits light by receiving light emitted by the EL component, and the light emitted by the phosphor is used to excite the phosphor to emit light.

[0010] According to some embodiments of this application, the light-emitting layer includes a first layer and a second layer stacked together, the EL component is disposed inside the first layer, and the phosphor is doped inside the second layer.

[0011] According to some embodiments of this application, a conductive layer is provided between the first layer and the second layer, and the conductive layer is electrically connected to the EL component.

[0012] According to some embodiments of this application, the surface of the EL component is provided with an encapsulation structure, the light emitted by the EL component can pass through the encapsulation structure, and the phosphor is doped into the encapsulation structure.

[0013] According to some embodiments of this application, the EL component is formed as an EL coil, the EL component is embedded in the pattern of the tire sidewall rubber, or is attached to the tire sidewall rubber; the EL component is connected to the tire sidewall rubber by conductive rubber, or the EL component is connected to the tire sidewall rubber by thermal fusion.

[0014] According to some embodiments of this application, the EL component is provided with a thermoelectric generator and a heat collection component near the tire tread. The thermoelectric generator and the heat collection component are connected. The heat collection component is used to collect sunlight and heat from the tire surface, and to excite the EL component to emit light through the thermoelectric generator.

[0015] According to some embodiments of this application, the heat collection component is made of PCM material with a phase change temperature equal to the diurnal temperature difference.

[0016] According to some embodiments of this application, the light-emitting layer is formed as a white tire sidewall rubber, the surface of the tire sidewall rubber is provided with a recess, the white tire sidewall rubber is disposed in the recess and protrudes from the surface of the tire sidewall rubber, and the surface of the white tire sidewall rubber is covered with a cover layer that extends to the surface of the tire sidewall rubber.

[0017] 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

[0018] The present application will be further illustrated below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments illustrated in the following drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application.

[0019] Figure 1 This is a partial cross-sectional view of the sidewall of the luminous tire according to the first embodiment of this application;

[0020] Figure 2 This is a partial cross-sectional view of the sidewall of the luminous tire according to the second embodiment of this application;

[0021] Figure 3 This is a partial cross-sectional view of the sidewall of the luminous tire according to the third embodiment of this application;

[0022] Figure 4 This is a partial cross-sectional view of the sidewall of the luminous tire according to the fourth embodiment of this application.

[0023] Figure label:

[0024] 101. Tire sidewall rubber;

[0025] 201. Light-emitting layer; 202. EL component;

[0026] 301. First layer; 302. Second layer; 303. Conductive layer;

[0027] 401. Packaging structure;

[0028] 501. White tire sidewall rubber; 502. Overlay. Detailed Implementation

[0029] The embodiments of this application are described in detail below with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0030] In the description of this application, it should be understood that the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this application.

[0031] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In the description of this application, the use of terms such as "one embodiment," "some embodiments," "an example," "some instances," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] This application provides a luminous tire, which includes a tire sidewall rubber 101. The tire sidewall rubber 101 is located on the side of the tire. It is understood that when the tire is mounted on the vehicle's rim, the tire sidewall faces outwards and does not contact the ground, thus determining the tire's appearance during use. Therefore, the luminous tire of this application has a light-emitting structure on the tire sidewall rubber 101, thereby giving the luminous tire a luminous appearance.

[0035] Furthermore, the luminous tire also includes a luminescent layer 201, which is the structure on the side of the luminous tire that can emit light. At the same time, the luminescent layer 201 is doped with phosphors. Unlike commonly coated phosphors, the phosphors doped into the luminescent layer 201 will not fall off and are more easily uniformly distributed, thereby improving the luminous effect of the luminous tire of this application.

[0036] In this application, the phosphor doped into the light-emitting layer 201 can emit light through various working principles. Firstly, the phosphor can emit light through thermal excitation; secondly, the phosphor can emit light through temperature difference excitation; and thirdly, the phosphor can emit light through electro-excitation. It is understood that the phosphor can also emit light through photo-excitation. Specifically, the luminescence principle of the phosphor in this application includes at least two of the above-mentioned multiple luminescence principles.

[0037] When a phosphor emits light through thermal excitation, it releases energy upon thermal stimulation, thereby producing visible light or infrared radiation. It can be understood that a phosphor can convert thermal energy into light energy, emitting light while simultaneously absorbing heat from the tire surface, thus aiding in tire cooling.

[0038] When a phosphor is excited by a temperature difference, the temperature difference in the external environment is converted into electrical energy. This electrical energy first drives the corresponding light source to emit light, facilitating the phosphor's photoexcitation. If the vehicle is stationary and thermal excitation of the phosphor is difficult, temperature difference excitation becomes the primary luminescence principle of the phosphor.

[0039] When a phosphor emits light through electrical excitation, electrons in the phosphor material absorb energy and transition to an excited state under the influence of an electric field. They then return to the ground state and release photons. During this process, the phosphor emits light.

[0040] When a phosphor emits light through photoexcitation, it is irradiated by incident light of a certain wavelength. The energy of the photons is absorbed by the phosphor molecules, causing electrons in the molecules to transition from the ground state to a higher-energy excited state. These excited states are unstable, and the electrons quickly return to the lowest vibrational energy level through a non-radiative transition process. Then, they transition back to the ground state from that energy level in the form of radiation, releasing energy and emitting light.

[0041] The phosphor in this application can emit light using one or more of the principles mentioned above. When the phosphor emits light using multiple principles, these principles work together to promote the luminescence process, thereby ensuring that the phosphor emits higher intensity light. This allows the phosphor to achieve the luminous effect of the tires described in this application, even during daytime. Currently, most luminous tires on the market use a single photoexcitation principle, resulting in weak light intensity emitted by the phosphor. This makes it difficult to achieve a luminous effect during daytime, leading to poor decorative and safety warning effects and limiting the application scenarios.

[0042] The contents of this application are described in detail below with reference to specific embodiments. It should be noted that the following description is merely illustrative and not a specific limitation of this application.

[0043] In some examples, the phosphor in this application is a phosphor. The phosphor used has the advantages of being non-toxic, safe, environmentally friendly, durable, and low in preparation cost. The luminescence performance of the phosphor is adjustable and controllable, and it has the characteristics of long afterglow time, high luminescence brightness, and stable chemical and thermal properties.

[0044] like Figure 1 As shown, in the first embodiment, an EL component is provided inside the light-emitting layer 201. Specifically, the EL component is an EL coil.

[0045] When the EL component is powered on, it emits light, thus generating light energy. At the same time, since the phosphor is also doped in the light-emitting layer 201, the light energy generated by the EL component can excite the phosphor to emit light.

[0046] It is understandable that both the EL component and the phosphor can emit light, thereby increasing the intensity of the light emitted by the light-emitting layer 201 and ensuring the luminous effect of the luminous tire of this application.

[0047] In addition, EL components can directly transfer light energy to phosphors, or indirectly transfer light energy to phosphors through appropriate structures as a medium.

[0048] In some examples, phosphors are also doped within the luminescent layer 201, which can serve as a light energy transfer medium between the EL component and the phosphor.

[0049] In this process, the light energy emitted by the EL component is first transferred to the phosphor. After receiving the light energy, the phosphor then transfers it to the phosphor, thereby exciting the phosphor to emit light.

[0050] It is understandable that the EL component, phosphor, and phosphor can all emit light, thereby increasing the intensity of the light emitted by the light-emitting layer 201 and ensuring the luminous effect of the luminous tire of this application.

[0051] like Figure 2 As shown, in the second embodiment, the light-emitting layer 201 includes a first layer 301 and a second layer 302, which are stacked together. Furthermore, the EL component is disposed inside the first layer 301, and the phosphor is doped inside the second layer 302.

[0052] Furthermore, in the second embodiment, the EL component and the phosphor are located in different layered structures. Specifically, the first layer 301 containing the EL component is situated between the second layer 302 doped with the phosphor and the tire sidewall rubber 101, or the second layer 302 doped with the phosphor is situated between the first layer 301 containing the EL component and the tire sidewall rubber 101. That is, the positions of the first layer 301 and the second layer 302 can be interchanged for flexible configuration.

[0053] Similar to the first embodiment, the second embodiment also uses the light energy generated by the EL component to excite the phosphor to emit light. At the same time, phosphor can also be doped into the second layer 302 as a medium for light energy transfer, so that the light energy generated by the EL component is first transferred to the phosphor, and then the phosphor transfers the light energy to the phosphor.

[0054] In the second embodiment, a conductive layer 303 is provided between the first layer 301 and the second layer 302. The conductive layer 303 is electrically connected to the EL component, so that the EL component can obtain sufficient electrical energy to realize the EL component emitting light.

[0055] Meanwhile, the conductive layer 303 can also directly transfer electrical energy to the phosphor, making it easier for the phosphor to emit light through the principle of electro-excitation luminescence.

[0056] In some examples, the surface of the EL component is provided with an encapsulation structure 401, which can ensure the structural integrity of the EL component and improve its durability.

[0057] The encapsulation structure 401 is made of a transparent material, which allows light emitted by the EL component to propagate through the encapsulation structure 401.

[0058] like Figure 3 As shown, in the third embodiment, the phosphor is doped into the encapsulation structure 401. When the light emitted by the EL component passes through the encapsulation structure 401, the light energy is transferred to the phosphor, thereby realizing the co-emission of the EL component and the phosphor.

[0059] Meanwhile, phosphors can also be doped into the encapsulation structure 401 as a medium for light energy transfer. It is understood that phosphors can also be doped into the substrate of the light-emitting layer 201 in the third embodiment as a medium for light energy transfer. When phosphors are doped into the encapsulation structure 401 and / or the substrate of the light-emitting layer 201, the EL component, phosphor, and phosphor emit light together, thereby increasing the intensity of the light emitted by the light-emitting layer 201 as a whole.

[0060] In some examples, the EL component can be located in multiple positions. The EL component can be embedded in the tread pattern of the tire sidewall 101, or it can be attached to the logo position on the tire sidewall 101, causing the tread pattern and / or the logo of the tire sidewall 101 to illuminate, thereby enhancing the overall aesthetics of the tire and serving as a safety warning.

[0061] Furthermore, the EL component can be bonded to the tire sidewall 101 using various processes. Specifically, the EL component can be connected to the tire sidewall 101 via conductive rubber or through thermal fusion, thereby ensuring the positional stability of the EL component and preventing it from detaching.

[0062] In some examples, to power the EL component, a thermoelectric generator is located near the tire tread. This thermoelectric generator generates electricity based on the temperature differences between the different surfaces, thus powering the EL component. When the thermoelectric generator powers the EL component, the EL component emits light, generating light energy. This light energy is then transferred to the phosphor, causing it to emit light. Therefore, the phosphor operates on the principle of temperature-induced light emission through the EL component and the thermoelectric generator.

[0063] Understandably, the output of the thermoelectric generator is connected to the power input of the EL component via a wire. Specifically, the thermoelectric generator adopts a plate-like structure, which can fit snugly against the tire without affecting its normal rotation.

[0064] Furthermore, a heat collection component is located near the tire tread of the EL component. The thermoelectric generator is connected to the heat collection component. The heat collection component collects heat from sunlight and the tire surface and transfers the heat to one side of the thermoelectric generator, raising the temperature of that side. The other side of the thermoelectric generator is exposed to the external environment. When the temperature in the external environment is low, a temperature difference exists between the two sides of the thermoelectric generator, thereby driving the thermoelectric generator to provide electrical energy to the EL component.

[0065] Specifically, at night, as the ambient temperature drops, the temperature difference between the tire surface and the environment increases, which enhances the power generation capacity of the thermoelectric generator. The thermoelectric generator can use this temperature difference to generate enough electrical energy to excite the EL coil to emit light.

[0066] In addition, good thermal contact is required between the thermoelectric generator and the heat collection component to ensure efficient heat transfer. This can be achieved by using a high thermal conductivity material as a connecting piece.

[0067] In some examples, the surface of the EL component is also provided with a hydrophobic film to prevent liquids in the external environment from affecting the normal operation of the EL component.

[0068] In some examples, the heat collection components are made of PCM material with a phase change temperature close to the diurnal temperature range to ensure efficient heat storage and release.

[0069] Furthermore, although PCM is generally considered a standalone thermal storage medium, it can also be integrated into thermal battery systems, where PCM absorbs and releases heat through phase change.

[0070] Alternatively, heat collection components can also be made of composite PCM materials, such as a composite material of paraffin and expanded graphite, with a phase transition temperature between 40 and 45°C.

[0071] Various processing methods can be used in the bonding process between PCM and thermoelectric generator components. Thermoelectric generator components typically require good thermal conductivity to ensure efficient operation. High thermal conductivity adhesives can be used to bond the phase change material (PCM) to the thermoelectric generator component. First, the PCM is formed into a sheet or paste of appropriate shape. Second, a layer of high thermal conductivity adhesive is evenly applied to the surface of the thermoelectric generator component. Third, the PCM sheet or paste is placed over the thermoelectric generator component and gently pressed to ensure a tight bond. Finally, the adhesive is allowed to cure, completing the bonding process.

[0072] Some thermoelectric generator (TEG) designs use heat-conducting blocks or sheets to enhance heat transfer performance. Therefore, phase change material (PCM) can be combined with heat-conducting blocks or sheets and then bonded to the TEG component. First, the PCM is filled into one side of the heat-conducting block or sheet; second, a high thermal conductivity adhesive is used to fix the heat-conducting block or sheet to the TEG component; finally, good thermal contact is ensured between the PCM and the TEG component.

[0073] If the phase change material (PCM) needs to be bonded to the electrode portion of the thermoelectric generator (TEG), good insulation between the two is essential. An insulating, thermally conductive material can be used as a support sheet to hold the PCM in place before bonding it to the TEG. First, the PCM is fixed to the insulating, thermally conductive support sheet; second, a high thermal conductivity adhesive is used to bond the support sheet to the surface of the TEG; finally, after the adhesive cures, a good heat transfer path is ensured between the PCM and the TEG.

[0074] If the phase change material needs to be bonded to the electrode portion of the thermoelectric generator, an insulating and thermally conductive material can be used as an insulating layer. This layer, such as an alumina ceramic sheet or insulating and thermally conductive silicone, can be added between the phase change material and the thermoelectric generator's electrodes. This material can effectively conduct heat while ensuring insulation performance. During the bonding process, highly thermally conductive and highly insulating adhesives, such as polyimide resin or insulating and thermally conductive silicone, can be used. These adhesives form a good insulating layer after curing, while ensuring effective heat transfer.

[0075] In addition, the coefficients of thermal expansion of the phase change material and the thermoelectric element should be matched as closely as possible to avoid material detachment due to inconsistent thermal expansion. Furthermore, the selected adhesive should be able to remain stable within the operating temperature range of the thermoelectric component.

[0076] like Figure 4 As shown, in the fourth embodiment, the light-emitting layer 201 is formed as a white tire sidewall rubber 501. The surface of the tire sidewall rubber 101 is provided with a recessed portion. The white tire sidewall rubber 501 is disposed in the recessed portion and protrudes from the surface of the tire sidewall rubber 101.

[0077] Meanwhile, the surface of the white tire sidewall rubber 501 is covered with a covering layer 502, which extends to the surface of the tire sidewall rubber 101. It is understood that the tire sidewall rubber 101 in the fourth embodiment is the black tire sidewall rubber.

[0078] In the preparation process of the luminous tire in the fourth embodiment, fluorescent powder is first uniformly incorporated into the rubber compound to form white tire sidewall rubber 501. After the white tire sidewall rubber 501 is formed, the tire needs to be vulcanized in a vulcanizing furnace, and finally polished and colored. This preparation method maintains the luminous effect of the fluorescent material and ensures the fluorescence display of different fonts, patterns, and local peripheries, without affecting the original tire's excellent performance.

[0079] Furthermore, in the first, second, third, and fourth embodiments, the phosphors are all capable of emitting light through photoexcitation and thermal excitation. Therefore, the phosphors in the first, second, third, and fourth embodiments all possess multiple light-emitting principles. The combined effect of these multiple principles enhances the intensity of the emitted light, enabling the luminous tires of this application to achieve a good luminous effect even during daytime, thus improving the decorative and safety warning effects of the luminous tires.

[0080] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A luminous tire, characterized in that, include: Tire sidewall rubber; A light-emitting layer is disposed on the surface of the tire sidewall rubber. The light-emitting layer is doped with a phosphor. The phosphor can absorb heat from the tire and emit light through thermal excitation. The phosphor can also emit light through temperature difference excitation.

2. The luminous tire according to claim 1, characterized in that, The light-emitting layer has an EL component inside, and the light emitted by the EL component when it is powered on can excite the phosphor to emit light.

3. The luminous tire according to claim 2, characterized in that, The light-emitting layer is doped with phosphors, which emit light by receiving light emitted by the EL component. The light emitted by the phosphors is used to excite the phosphors to emit light.

4. The luminous tire according to claim 2 or 3, characterized in that, The light-emitting layer includes a first layer and a second layer stacked together, the EL component is disposed inside the first layer, and the phosphor is doped inside the second layer.

5. The luminous tire according to claim 4, characterized in that, A conductive layer is provided between the first layer and the second layer, and the conductive layer is electrically connected to the EL component.

6. The luminous tire according to claim 2 or 3, characterized in that, The surface of the EL component is provided with an encapsulation structure, and the light emitted by the EL component can pass through the encapsulation structure. The phosphor is doped into the encapsulation structure.

7. The luminous tire according to claim 2, characterized in that, The EL component is formed as an EL coil. The EL component is embedded in the pattern of the tire sidewall rubber or attached to the tire sidewall rubber. The EL component is connected to the tire sidewall rubber by conductive rubber or by thermal fusion.

8. The luminous tire according to claim 2, characterized in that, The EL component is equipped with a thermoelectric generator and a heat collection component near the tire tread. The thermoelectric generator and the heat collection component are connected. The heat collection component is used to collect sunlight and heat from the tire surface, and to excite the EL component to emit light through the thermoelectric generator.

9. The luminous tire according to claim 8, characterized in that, The heat collection component is made of PCM material with a phase change temperature equal to the diurnal temperature difference.

10. The luminous tire according to claim 1, characterized in that, The light-emitting layer is formed as a white tire sidewall rubber. The surface of the tire sidewall rubber has a recessed portion. The white tire sidewall rubber is disposed in the recessed portion and protrudes from the surface of the tire sidewall rubber. The surface of the white tire sidewall rubber is covered with a cover layer that extends to the surface of the tire sidewall rubber.

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