Demisting and defrosting structure of car lamp

Abstract

The utility model relates to a demisting and defrosting structure for a car lamp, which comprises a lamp body, an outer lampshade, a light-emitting component, a first filter and a second filter, and the transparent or semitransparent outer lampshade covers the light-emitting component and is fixedly mounted on the lamp body. The first filter and the second filter are directly formed on the inner side and the outer side of the outer lampshade in an embedded injection molding mode, the first filter absorbs light of the light-emitting assembly on the inner side and converts the light into heat energy to disperse fog, and the second filter absorbs light of the light-emitting assembly on the outer side and converts the light into heat energy to eliminate a frost layer. According to the demisting and defrosting structure of the car lamp, the material properties of the two sides of the outer lampshade are changed through the first filter and the second filter, specific light is absorbed, the heating effect is achieved, and the good demisting and defrosting effect is ensured while safety risks are eliminated.

Description

Technical Field

[0001] This utility model relates to vehicles, and more specifically to a defrosting and defogging structure for vehicle lights. Background Technology

[0002] It is known that car headlights are prone to fogging and frost formation, which can significantly impact driving safety and appearance. However, since liquid film condensation is a common physical phenomenon and difficult to avoid at the source, the only recourse is to use various methods to accelerate the dissipation of fog and frost.

[0003] Known methods for addressing fogging and frost formation include heating, desiccants, waterproof and breathable membranes, and anti-fog coatings. However, these known solutions all require significant space and add various structures and components. Heating, the most effective method, carries substantial manufacturing risks, while other methods offer limited effectiveness. Heating typically involves placing heating wires or films inside the headlight, energizing them to raise the internal temperature and dissipate fog and frost. Clearly, this energizing process carries significant manufacturing risks. Utility Model Content

[0004] In order to solve the problems of poor defogging and defrosting effect or risks in the existing technology, this utility model provides a vehicle headlight defogging and defrosting structure.

[0005] According to the present invention, the vehicle headlight defogging and defrosting structure includes a lamp body, an outer lamp cover, a light-emitting component, a first filter, and a second filter. The transparent or semi-transparent outer lamp cover covers the light-emitting component on the outside and is fixedly installed on the lamp body. The first filter and the second filter are directly molded on opposite sides of the outer lamp cover by injection molding. The first filter absorbs the light from the light-emitting component on the inside and converts it into heat energy to dissipate fog, while the second filter absorbs the light from the light-emitting component on the outside and converts it into heat energy to eliminate frost.

[0006] In a preferred embodiment, the thicknesses of the first filter and the second filter are respectively between a few micrometers and 2 millimeters.

[0007] In a preferred embodiment, the first filter and the second filter are optical filters used to selectively transmit or block light wavelengths, selectively transmitting visible light while absorbing invisible light.

[0008] In a preferred embodiment, the first filter and the second filter are infrared and / or ultraviolet absorption filters, respectively.

[0009] In a preferred embodiment, the light-emitting component includes a circuit board and a first light source, wherein the circuit board is fixedly mounted on the lamp body and connected to the vehicle body electrical connector, and the first light source is electrically connected to the circuit board to provide normal illumination function.

[0010] In a preferred embodiment, the light-emitting component further includes a second light source, which is electrically connected to the circuit board to provide additional energy.

[0011] In a preferred embodiment, the vehicle headlight defrosting structure further includes a bracket fixedly mounted on the headlight body, which has a reflective surface, through which the light emitted by the second light source illuminates the first filter and the second filter.

[0012] In a preferred embodiment, the second light source is an infrared and / or ultraviolet emitter.

[0013] In a preferred embodiment, the light-emitting component further includes a reflector, which is fixedly mounted on the lamp body and disposed between the first light source and the outer lamp cover to reflect the light emitted by the first light source to improve the lighting efficiency and beam quality of the vehicle body.

[0014] In a preferred embodiment, the light-emitting component further includes a light-diffusing plate, which is fixedly mounted on the lamp body and disposed between the reflector and the outer lamp cover to make the light distribution more uniform.

[0015] According to the vehicle headlight defogging and defrosting structure of this utility model, the material properties on both sides of the outer lamp cover are changed by the first filter and the second filter to achieve the absorption of specific light and achieve a heating effect, thereby eliminating safety risks while ensuring good defogging and defrosting effect. Attached Figure Description

[0016] Figures 1-2 This is a schematic diagram of a vehicle headlight defrosting and defogging structure according to a preferred embodiment of the present invention.

[0017] Figure 3 This is a cross-sectional view of a vehicle headlight defrosting structure according to another preferred embodiment of the present invention.

[0018] Figure 4 This is a cross-sectional view of a vehicle headlight defrosting structure according to another preferred embodiment of the present invention. Detailed Implementation

[0019] The preferred embodiments of this utility model are given below with reference to the accompanying drawings and described in detail.

[0020] like Figures 1-2As shown, a preferred embodiment of the vehicle headlight defogging and defrosting structure according to this utility model includes a lamp body 1, an outer lamp cover 2, a light-emitting component (not shown), a first filter 3, and a second filter 4. The lamp body 1 is mounted on a pre-reserved mounting interface on the vehicle via a first fastener. The light-emitting component is fixedly mounted on the lamp body 1 and connected to the vehicle's electrical connectors. The transparent or semi-transparent outer lamp cover 2 covers the light-emitting component on its outer side and is mounted on the lamp body 1 via a second fastener. The first filter 3 and the second filter 4 are directly injection molded onto the inner and outer opposite sides of the outer lamp cover 2. The first filter 3 absorbs the light from the light-emitting component on its inner side and converts it into heat energy to dissipate fog, while the second filter 4 absorbs the light from the light-emitting component on its outer side and converts it into heat energy to eliminate frost. Specifically, during the injection molding of the outer lamp cover 2, the first filter 3 and the second filter 4 are pre-placed as inserts in the mold. Thus, upon completion of the injection molding, the first filter 3 and the second filter 4 are directly fixed to the outer lamp cover 2 without the need for additional adhesives such as glue. Compared to existing technologies that energize heating wires or heating films on the surface of vehicle lights, the vehicle light defogging and defrosting structure of this utility model does not require additional power. It only changes the material properties on both sides of the outer lamp cover 2 by using the first filter 3 and the second filter 4 to achieve the absorption of specific light and achieve the heating effect. This eliminates safety risks while ensuring good defogging and defrosting effects.

[0021] The thickness of the first filter 3 and the second filter 4 can be adjusted from a few micrometers to 2 millimeters, depending on the specific project. Their fixation on the outer lamp cover 2 does not affect the basic appearance and function of the lamp.

[0022] The first filter 3 and the second filter 4 are optical filters used to selectively transmit or block light wavelengths, selectively transmitting visible light while absorbing invisible light. For example, during the filter manufacturing process, a substance that absorbs infrared light is added, thereby allowing visible light to pass through while absorbing invisible infrared light, thus providing an infrared absorption filter. As another example, during the filter manufacturing process, a substance that absorbs ultraviolet light is added, thereby allowing visible light to pass through while absorbing invisible ultraviolet light, thus providing an ultraviolet absorption filter.

[0023] When the light source (e.g., LED) of the light-emitting component is lit, the visible light emitted by the first light source can pass through the first filter 3 and the second filter 4 to achieve the normal light-emitting function. The invisible wavelength energy emitted by the light source is absorbed by the first filter 3 and the second filter 4, causing the temperature of the first filter 3 and the second filter 4 to rise, thereby heating the outer lamp cover 2 without affecting the appearance and function of the lamp, and achieving the defogging and defrosting function.

[0024] like Figure 3As shown, the light-emitting component of the vehicle lamp defrosting and defogging structure according to another preferred embodiment of the present invention is the same as that of the previous embodiment, including a circuit board 51, a first light source 52, a reflector 53, and a light-diffusing plate 54. The circuit board 51 is fixedly mounted on the lamp body 1 and connected to the vehicle body electrical connector. The first light source 52 is electrically connected to the circuit board 51 to provide normal illumination. The reflector 53 is fixedly mounted on the lamp body 1 and positioned between the first light source 52 and the outer lamp cover 2 to reflect the light emitted by the first light source 52, improving the vehicle body's lighting efficiency and beam quality. The light-diffusing plate 54 is fixedly mounted on the lamp body 1 and positioned between the reflector 53 and the outer lamp cover 2 to make the light distribution more uniform and reduce light spots and shadows. Unlike the previous embodiment, the light-emitting component of this embodiment also includes a second light source 6, which is electrically connected to the circuit board 51 to provide additional energy. For example, when the first filter 3 and the second filter 4 are infrared absorption filters, the second light source 6 is an infrared emitter. As another example, when the first filter 3 and the second filter 4 are ultraviolet absorption filters, the second light source 6 is an ultraviolet emitter. It should be understood that the number and position of the second light source 6 can be adjusted as needed, and there can be one or even dozens of combinations. For example, it can be directly mounted on the circuit board 51 using semiconductor surface mount technology, which is consistent with the installation and positioning method of the first light source 52 that provides normal illumination function.

[0025] When the first light source 52 (e.g., an LED) of the light-emitting component is lit, the visible light emitted by the first light source 52 can pass through the first filter 3 and the second filter 4 to achieve normal light emission. The invisible wavelength energy emitted by the first light source 52 and the second light source 6 (e.g., an infrared LED or an ultraviolet LED) is absorbed by the first filter 3 and the second filter 4, causing the temperature of the first filter 3 and the second filter 4 to rise. This heats the outer lamp cover 2 without affecting the appearance and function of the lamp, thus achieving the defogging and defrosting function. Obviously, this embodiment is particularly suitable for situations where the energy of the original first light source 52 is insufficient to eliminate fog and frost. The first filter 3 and the second filter 4 provide better defogging and defrosting functions by absorbing the energy of the infrared emitter or the ultraviolet emitter.

[0026] like Figure 4 As shown, according to another preferred embodiment of the vehicle headlight defrosting structure of this utility model, a bracket 7 fixedly mounted on the headlight body 1 is further included. This bracket has a reflective surface 71, through which light emitted from the second light source 6 illuminates the first filter 3 and the second filter 4. It should be understood that the number and position of the reflective surfaces 71 can be adjusted as needed. The reflective surfaces 71 can be formed using an aluminum plating process on the surface of the bracket 7, creating a mirror effect to guide light onto the first filter 3 and the second filter 4, which are blocked by the internal structure.

[0027] When the first light source 52 (e.g., an LED) of the light-emitting component is lit, the visible light emitted by the first light source 52 can pass through the first filter 3 and the second filter 4 to achieve the normal light-emitting function. The invisible light emitted by the first light source 52 and the second light source 6 (e.g., an infrared LED or an ultraviolet LED) is reflected by the reflective surface 71 and reaches the first filter 3 and the second filter 4, causing the temperature of the first filter 3 and the second filter 4 to rise. This heats the outer lamp cover 2 without affecting the appearance and function of the lamp, thus achieving the defogging and defrosting function. Obviously, this embodiment is particularly suitable when the energy of the original first light source 52 is insufficient to eliminate fog and frost, and the first filter 3 and the second filter 4 are located in areas blocked by the internal structure of the lamp body. The first filter 3 and the second filter 4 provide better defogging and defrosting functions by absorbing the energy of the infrared emitter or ultraviolet emitter reflected by the reflective surface 71.

[0028] It should be understood that the vehicle headlight defogging and defrosting structure according to this utility model can include any parts other than the headlights and grille that require a luminous effect, such as trim lights, interior ambient lights, side doors, taillights, etc. The definition of luminescence includes not only visible light but also light emitted that is invisible to the human eye. Sometimes, if there is a need for defrosting and defogging, non-luminous grilles and other headlights can also use this structure (in this case, if there is no additional heat / light source, the film can be heated by sunlight to eliminate fog). This utility model mainly attaches the film (i.e., the filter) to the outer lamp cover, not limited to the inner or outer wall; the film can be placed on any part that is prone to fogging and frosting. The film material of this utility model is mainly any material that can absorb ultraviolet or infrared energy, or a material that can absorb both simultaneously. The visible luminous surface of this utility model can be any curved surface, plane, etc. The light source of this utility model can be LED particles or any light source. Furthermore, when it is necessary to adjust the angle of the light source to illuminate the film, the resulting reflective surface can be any curved surface, plane, etc.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various variations can be made to the above embodiments of this utility model. That is, all simple and equivalent changes and modifications made based on the claims and description of this utility model application fall within the protection scope of the claims of this utility model patent. Any aspects of this utility model not described in detail are conventional technical content.

Claims

1. A defrosting and defogging structure for vehicle lights, characterized in that, The vehicle headlight defogging and defrosting structure includes a headlight body, an outer headlight cover, a light-emitting component, a first filter, and a second filter. The transparent or semi-transparent outer headlight cover covers the light-emitting component on the outside and is fixedly installed on the headlight body. The first filter and the second filter are directly molded into the inner and outer opposite sides of the outer headlight cover by injection molding. The first filter absorbs the light from the light-emitting component on the inner side and converts it into heat energy to dissipate fog, while the second filter absorbs the light from the light-emitting component on the outer side and converts it into heat energy to eliminate frost.

2. The vehicle headlight defrosting and defogging structure according to claim 1, characterized in that, The thicknesses of the first and second filters are between a few micrometers and 2 millimeters, respectively.

3. The vehicle headlight defrosting and defogging structure according to claim 1, characterized in that, The first and second filters are optical filters used to selectively transmit or block light wavelengths, selectively transmitting visible light while absorbing invisible light.

4. The vehicle headlight defrosting and defogging structure according to claim 1, characterized in that, The first filter and the second filter are infrared and / or ultraviolet absorption filters, respectively.

5. The vehicle headlight defrosting and defogging structure according to claim 1, characterized in that, The light-emitting component includes a circuit board and a first light source. The circuit board is fixedly mounted on the lamp body and connected to the vehicle body electrical connectors. The first light source is electrically connected to the circuit board to provide normal illumination.

6. The vehicle headlight defrosting and defogging structure according to claim 5, characterized in that, The light-emitting components also include a second light source, which is electrically connected to the circuit board to provide additional power.

7. The vehicle headlight defrosting and defogging structure according to claim 6, characterized in that, The vehicle headlight defrosting structure also includes a bracket fixedly mounted on the headlight body, which has a reflective surface. The light emitted by the second light source shines on the first filter and the second filter through the reflective surface.

8. The vehicle headlight defrosting and defogging structure according to claim 6, characterized in that, The second light source is an infrared and / or ultraviolet emitter.

9. The vehicle headlight defrosting and defogging structure according to claim 5, characterized in that, The light-emitting component also includes a reflector, which is fixedly mounted on the lamp body and positioned between the first light source and the outer lamp cover to reflect the light emitted by the first light source, thereby improving the lighting efficiency and beam quality of the vehicle body.

10. The vehicle headlight defrosting and defogging structure according to claim 9, characterized in that, The light-emitting component also includes a light-diffusing plate, which is fixedly mounted on the lamp body and positioned between the reflector and the outer lamp cover to make the light distribution more uniform.

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