CN219300588U - Car light with defogging defrosting function - Google Patents
Car light with defogging defrosting function Download PDFInfo
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- CN219300588U CN219300588U CN202220775557.2U CN202220775557U CN219300588U CN 219300588 U CN219300588 U CN 219300588U CN 202220775557 U CN202220775557 U CN 202220775557U CN 219300588 U CN219300588 U CN 219300588U
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Abstract
The utility model discloses a car lamp with demisting and defrosting functions, which comprises a shell and a transparent lampshade, wherein the shell and the transparent lampshade are mutually covered to form a cavity structure, a PCB (printed Circuit Board) and an inner lampshade are arranged in the cavity structure, the inner lampshade is positioned between the transparent lampshade and the PCB, and a plurality of LED lamps are arranged at one end, facing the inner lampshade, of the PCB; the inner surface or the inside of the transparent lampshade is provided with a transparent heating film, the cavity structure is internally provided with a temperature and humidity sensor and a processor, the transparent heating film is electrically connected with a power supply, and the temperature and humidity sensor is electrically connected with the processor; when the temperature in the cavity structure is lower than a specified value a or the relative humidity is higher than a specified value b, the humidity sensor sends a high-level current signal to the processor, and the processor sends a switch opening command to conduct a circuit where the transparent heating film is located. The utility model can prevent the inner surface of the lampshade from fogging or frosting and remove the snow and water film on the outer surface of the lampshade.
Description
Technical Field
The utility model relates to the technical field of car lamp design, in particular to a car lamp with demisting and defrosting functions.
Background
At present, the automobile lamp is foggy or frosted in the using process of the automobile on the market, and the foggy or frosting is a normal physical phenomenon of water vapor condensation. When the lamp or the surrounding environment changes (such as the lighting of the lamp, the working of an engine, the irradiation of sunlight, rain and the like), the temperature difference exists between the inside and the outside of the lamp, so that moisture in the air in the lamp is condensed and attached on the surface of the lamp shade with colder temperature, and opaque water mist is formed, the lighting effect and the appearance modeling of the lamp are affected, and the customer complaints are easily caused; along with the intelligent development of the car lamp, particularly the lamp with a projection function, the anti-fog and anti-frosting effects become more urgent and necessary, so that the prevention of the fog and frosting of the car lamp is one of the problems to be solved urgently in various lamp factories and host factories.
Disclosure of Invention
In order to solve the technical problems that in the prior art, an automobile lamp does not have a defogging and defrosting function, so that moisture in air in the lamp is condensed and attached on a lamp shade surface with a relatively cold temperature to form opaque water mist, and the lighting effect and the appearance modeling of the automobile lamp are affected, the utility model provides the automobile lamp with the defogging and defrosting function, and solves the problems.
The technical scheme adopted for solving the technical problems is as follows: a car lamp with demisting and defrosting functions comprises a shell and a transparent lampshade, wherein the shell and the transparent lampshade are mutually covered to form a cavity structure, a PCB (printed Circuit Board) and an inner lampshade are arranged in the cavity structure, the inner lampshade is positioned between the transparent lampshade and the PCB, and a plurality of LED lamps are arranged at one end, facing the inner lampshade, of the PCB; the inner surface or the inside of the transparent lampshade is provided with a transparent heating film, the cavity structure is internally provided with a temperature and humidity sensor and a processor, the transparent heating film is electrically connected with a power supply, and the temperature and humidity sensor is electrically connected with the processor; when the temperature in the cavity structure is lower than a specified value a or the relative humidity is higher than a specified value b, the humidity sensor sends a high-level current signal to the processor, and the processor sends a switch opening command to conduct a circuit where the transparent heating film is located.
Further, the transparent heating film, the power supply and the PCB are connected in series; when the humidity sensor sends a high-order current signal to the processor, the processor sends a starting command to the PCB, and the PCB controls the circuit where the transparent heating film is located to be conducted.
Further, the transparent heating film comprises a substrate and semiconductor powder deposited on the substrate in a magnetron sputtering mode, and the transparent heating film is injection-molded on the inner surface or the inside of the transparent lampshade.
Further, the transparent heating film is semiconductor powder deposited on the inner surface of the transparent lampshade in a magnetron sputtering mode.
Further, the transparent heating film and the wires are co-molded on the transparent lampshade.
Further, a wire groove is reserved in the transparent lampshade, one end of the wire is connected with the transparent heating film, and the other end of the wire penetrates through the wire groove and is connected with the PCB.
Further, the temperature and humidity sensor is arranged close to the lowest temperature position of the transparent lampshade.
Further, the temperature and humidity sensor is located at the bottom of the transparent lampshade and is arranged close to the connection part of the transparent lampshade and the shell.
Further, the shell is provided with a ventilation structure so as to balance the internal pressure and the external pressure of the cavity structure.
Further, the shell is provided with a ventilation opening, and the ventilation structure is a ventilation film or a waterproof ventilation bolt or a ventilation cover arranged at the ventilation opening.
Further, the transparent heating film comprises a substrate and semiconductor powder deposited on the substrate in a magnetron sputtering mode.
Further, the size of the specified value a is 10-15 ℃, and the size of the specified value b is 80-85%.
The beneficial effects of the utility model are as follows:
(1) According to the car lamp with the defogging and defrosting functions, the transparent heating film is arranged in or on the surface of the transparent lamp shade, and the temperature and humidity sensor and the processor are matched with the transparent heating film to enable the lamp shade to be heated to the specified temperature uniformly when the visible light keeps high transmittance. The temperature and humidity sensor monitors the temperature and humidity near the lampshade, and the processor controls the temperature of the lampshade, so that the functions of preventing the inner surface of the lampshade from fogging or frosting and removing snow and water films on the outer surface of the lampshade are achieved.
(2) According to the car lamp with the defogging and defrosting functions, the ventilation structure is arranged on the shell, so that when the transparent heating film works, the pressure difference between the inside and the outside of the lamp can be balanced, and the humidity in the lamp can be reduced.
Drawings
The utility model will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural view of a specific embodiment of a vehicle lamp with defogging and defrosting functions according to the present utility model.
In the figure, 1, the casing, 2, transparent lamp shade, 3, cavity structure, 4, PCB board, 5, interior lamp shade, 6, LED lamp, 7, transparent heating film, 8, temperature and humidity sensor, 9, treater, 10, wire, 11, wire groove, 12, ventilative structure, 13, light guide plate.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
Example 1
As shown in fig. 1, a car lamp with demisting and defrosting functions comprises a shell 1 and a transparent lampshade 2 which are mutually covered to form a cavity structure 3, wherein the transparent lampshade 2 is a light-emitting surface, a PCB board 4 and an inner lampshade 5 are arranged in the cavity structure 3, the inner lampshade 5 mainly plays roles in reflecting light and adjusting the angle of a light source, the inner lampshade 5 is positioned between the transparent lampshade 2 and the PCB board 4, the PCB board 4 is preferably arranged close to the shell 1, one end of the PCB board 4 facing the inner lampshade 5 is provided with a plurality of LED lamps 6, and the PCB board 4 is provided with a switch for controlling the LED lamps 6 to be turned on or off; the internal surface or inside of transparent lamp shade 2 has moulded plastics transparent heating film 7, still is provided with temperature and humidity sensor 8 and treater 9 in the cavity structure 3, and transparent heating film 7 is connected with the power electricity, the power refers to the power of automobile body end, and temperature and humidity sensor 8 is connected with the treater 9 electricity, and treater 9 can be installed on PCB board 4.
When the temperature in the cavity structure 3 is lower than a specified value a or the relative humidity is higher than a specified value b, the humidity sensor sends a high-level current signal to the processor 9, and the processor 9 sends a switch-on command to turn on the circuit in which the transparent heating film 7 is located. Conversely, when the temperature within the cavity structure 3 is higher than the specified value a or the relative humidity is lower than the specified value b, the humidity sensor sends a low-level current signal to the processor 9, and the processor 9 sends a switch-off command to open the circuit in which the transparent heating film 7 is located.
The processor 9 can be directly electrically connected with a power switch at the vehicle body end, at this time, the processor 9 directly sends a command to the vehicle body end, for example, an alarm can be arranged in the vehicle, when the alarm is started, the power switch can be manually turned on, and at this time, the transparent heating film 7 starts to heat.
The temperature and humidity sensor 8 may be commercially available, and in this embodiment, an AHT25 integrated temperature and humidity sensor 8 with an olor electronics may be selected.
A light guide plate 13 is typically also provided in the cavity structure 3, the light guide plate 13 being connected to the housing 1, the light guide plate 13 being used to improve the optical uniformity.
In order to avoid the too low local temperature in the car lamp, as a preferable mode, the temperature and humidity sensor 8 is arranged near the lowest temperature part of the transparent lampshade 2, and the lowest temperature part can detect the temperature distribution of the surface of the inner lampshade 5 during the working of the car lamp through the infrared thermal imager.
In the use state, as shown in fig. 1, the casing 1 and the lampshade are arranged along the front-back direction, the edge of the casing 1 and the edge of the lampshade are clamped and sealed by a buckle, and the lowest temperature position of the transparent lampshade 2 is mainly located at the bottom of the transparent lampshade 2 and is close to the connection position of the transparent lampshade 2 and the casing 1, namely the lowest position of the hollow cavity structure 3 in fig. 1.
The transparent heating film 7 generally comprises a substrate and semiconductor powder deposited on the substrate in a magnetron sputtering mode, the processing mode belongs to the prior art, a film with the thickness of only micro-nano level can be processed and formed, and when the transparent heating film 7 is electrified through the lead 10, electric energy can be converted into heat energy, and the transmittance to visible light can reach more than 50%. The transparent heating film 7 can be processed in advance, then the transparent heating film 7 and the transparent lampshade 2 are molded into a whole, and semiconductor powder can be directly deposited on the inner surface of the transparent lampshade 2 in a magnetron sputtering mode.
The size of the specified value a is preferably 10-15 ℃, and the size of the specified value b is preferably 80-85%. The designated value a in the present embodiment is 10 ℃, and the designated value b is 80%, that is, when the temperature and humidity sensor 8 monitors that the temperature in the cavity structure 3 is lower than 10 ℃, the transparent heating film 7 starts to heat; when the temperature and humidity sensor 8 detects that the relative humidity in the cavity structure 3 is higher than 80%, the transparent heating film 7 starts to heat.
Example two
The difference between this embodiment and the first embodiment is that the circuit in which the transparent heating film 7 is manually controlled is changed to be automatically controlled, and the specific scheme is as follows:
the transparent heating film 7, the power supply and the PCB 4 are connected in series; when the humidity sensor sends a high-order current signal to the processor 9, the processor 9 sends a starting command to the PCB 4, and the PCB 4 controls the circuit where the transparent heating film 7 is positioned to be conducted.
The PCB board 4 in this embodiment is added with a control switch for controlling the transparent heating film 7, which is controlled to be turned on or off by the processor 9, as compared with the first embodiment.
The transparent heating film 7 may be co-molded with the wires 10 on the transparent lamp housing 2. A wire groove 11 can be reserved in the transparent lampshade 2, one end of the wire 10 is connected with the transparent heating film 7, and the other end of the wire 10 passes through the wire groove 11 to be connected with the PCB 4.
Example III
On the basis of the above embodiment, the present embodiment is provided with the ventilation structure 12 on the housing 1 to balance the internal and external pressures of the cavity structure 3. When the temperature in the cavity structure 3 rises, the ventilation structure 12 can promote the air flow in the lamp, reduce the internal humidity of the lamp, and the shell 1 is provided with a ventilation opening, and the ventilation structure 12 can be, but is not limited to, a ventilation film or a waterproof ventilation plug or a ventilation cover arranged at the ventilation opening.
Through the embodiment, the temperature of the transparent lampshade 2 can be effectively controlled while the high transmittance of the transparent lampshade 2 to light is ensured, the fog or frosting of the inner surface of the lampshade of the car lamp under a severe working environment is prevented, and snow and water films on the outer surface of the lampshade can be rapidly removed in cold rainy and snowy days.
In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "bottom," "inner," "outer," etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the term "connected" should be interpreted broadly, and for example, it may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In this specification, a schematic representation of the terms does not necessarily refer to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. Car light with defogging defrosting function, its characterized in that: the LED lamp comprises a shell (1) and a transparent lampshade (2) which are mutually covered to form a cavity structure (3), wherein a PCB (printed circuit board) and an inner lampshade (5) are arranged in the cavity structure (3), the inner lampshade (5) is positioned between the transparent lampshade (2) and the PCB (4), and a plurality of LED lamps (6) are arranged at one end, facing the inner lampshade (5), of the PCB (4);
the transparent lampshade is characterized in that a transparent heating film (7) is arranged on the inner surface or inside the transparent lampshade (2), a temperature and humidity sensor (8) and a processor (9) are further arranged in the cavity structure (3), the transparent heating film (7) is electrically connected with a power supply, and the temperature and humidity sensor (8) is electrically connected with the processor (9);
when the temperature in the cavity structure (3) is lower than a specified value a or the relative humidity is higher than a specified value b, the humidity sensor sends a high-level current signal to the processor (9), and the processor (9) sends a switch opening command to enable the circuit where the transparent heating film (7) is located to be conducted.
2. The vehicle lamp with defogging and defrosting function as recited in claim 1, wherein: the transparent heating film (7), the power supply and the PCB (4) are connected in series;
when the humidity sensor sends a high-order current signal to the processor (9), the processor (9) sends a starting command to the PCB (4), and the PCB (4) controls the circuit where the transparent heating film (7) is located to be conducted.
3. The vehicle lamp with defogging and defrosting function as recited in claim 1, wherein: the transparent heating film (7) comprises a substrate and semiconductor powder deposited on the substrate in a magnetron sputtering mode, and the transparent heating film (7) is injection-molded on the inner surface or the inside of the transparent lampshade (2).
4. The vehicle lamp with defogging and defrosting function as recited in claim 1, wherein: the transparent heating film (7) is semiconductor powder deposited on the inner surface of the transparent lampshade (2) in a magnetron sputtering mode.
5. The vehicle lamp with defogging and defrosting function as recited in claim 1, wherein: the temperature and humidity sensor (8) is arranged close to the lowest temperature position of the transparent lampshade (2).
6. The vehicle lamp with defogging and defrosting function as recited in claim 5, wherein: the temperature and humidity sensor (8) is located at the bottom of the transparent lampshade (2) and is arranged close to the connection position of the transparent lampshade (2) and the shell (1).
7. The vehicle lamp with defogging and defrosting function as recited in claim 1, wherein: the shell (1) is provided with a ventilation structure (12) so as to balance the internal pressure and the external pressure of the cavity structure (3).
8. The vehicle lamp with defogging and defrosting function as recited in claim 7, wherein: the shell (1) is provided with a ventilation opening, and the ventilation structure (12) is a ventilation membrane or a waterproof ventilation bolt or a ventilation cover which is arranged at the ventilation opening.
9. The vehicle lamp with defogging and defrosting function as recited in claim 2, wherein: a wire groove (11) is reserved in the transparent lampshade (2), one end of a wire (10) is connected with the transparent heating film (7), and the other end of the wire (10) penetrates through the wire groove (11) to be connected with the PCB (4).
10. The vehicle lamp with defogging and defrosting function according to any one of claims 1 to 9, wherein: the size of the appointed value a is 10-15 ℃, and the size of the appointed value b is 80-85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220775557.2U CN219300588U (en) | 2022-04-02 | 2022-04-02 | Car light with defogging defrosting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220775557.2U CN219300588U (en) | 2022-04-02 | 2022-04-02 | Car light with defogging defrosting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219300588U true CN219300588U (en) | 2023-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220775557.2U Active CN219300588U (en) | 2022-04-02 | 2022-04-02 | Car light with defogging defrosting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219300588U (en) |
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2022
- 2022-04-02 CN CN202220775557.2U patent/CN219300588U/en active Active
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