CN111473301A - Automobile lamp - Google Patents
Automobile lamp Download PDFInfo
- Publication number
- CN111473301A CN111473301A CN202010317393.4A CN202010317393A CN111473301A CN 111473301 A CN111473301 A CN 111473301A CN 202010317393 A CN202010317393 A CN 202010317393A CN 111473301 A CN111473301 A CN 111473301A
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- China
- Prior art keywords
- lamp
- scattering film
- film
- light source
- transparent state
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The invention relates to an automobile lamp, comprising: a light source; the scattering film is positioned on the light emitting side of the light source; and the control circuit is electrically connected with the scattering film and is used for outputting different voltages to the scattering film so as to control the scattering film to be switched between a transparent state and a non-transparent state. The scattering film is arranged on the light emitting side of the light source, so that light emitted by the light source penetrates through the scattering film and then is emitted out, different voltages are input into the scattering film through the control circuit, the scattering film is switched between a transparent state and a non-transparent state, different light distribution regulations are met, and the purpose of switching between the use of the automobile lamp as a first signal lamp and the use of the automobile lamp as a second signal lamp is achieved. Compared with the traditional automobile lamp, the automobile lamp is low in cost, the requirement on the space inside the automobile lamp is reduced, and the problem that the light source flickers due to the fact that the duty ratio mode is changed can not occur.
Description
Technical Field
The invention relates to the technical field of automobile lights, in particular to an automobile lamp.
Background
With the increasing development of modern automobile technology, people pay more attention to the appearance of the automobile, and therefore, higher requirements on the space and the integration degree of the automobile lamp are also put forward.
In traditional car light technique, carry out the control of duty cycle through light source drive module to the light source to switch into different light intensity with the light that the light source sent, finally present different luminance, make same light source can regard as the light use of different effects, in order to reach the purpose of more effectual utilization car light space and higher integrated level. For example, the same light source is used to switch the light intensity of the light emitted by the light source to switch the rear position light and the brake light, or to switch the daytime running light and the front position light.
However, in the conventional automobile lamp technology, a large number of electronic components are required to form a complex light source driving module, the cost is high, the occupied space is large due to the large size of the control module, and the mode of controlling the duty ratio easily causes the light source to flicker, so that the requirement on monitoring equipment is high.
Disclosure of Invention
In view of the above, it is desirable to provide an automotive lamp that addresses at least one of the problems set forth above.
An automotive lamp comprising:
a light source;
the scattering film is positioned on the light emitting side of the light source; and
the control circuit is electrically connected with the scattering film and is used for outputting different voltages to the scattering film so as to control the scattering film to be switched between a transparent state and a non-transparent state.
The scattering film is arranged on the light emitting side of the light source, so that light emitted by the light source penetrates through the scattering film and then is emitted out, different voltages are input into the scattering film through the control circuit, the scattering film is switched between a transparent state and a non-transparent state, different light distribution regulations are met, and the purpose of switching between the use of the automobile lamp as a first signal lamp and the use of the automobile lamp as a second signal lamp is achieved. Compared with the traditional automobile lamp, the automobile lamp changes the brightness of the light emitted by the automobile lamp finally by changing the transparency of the scattering film, and a complex light source driving module is not needed, so that electronic control mechanisms are reduced, and the cost is reduced; and the space requirement for the interior of the automobile lamp is reduced; the problem that the light source flickers due to the fact that the duty ratio is changed can be solved; the automobile lamp in the embodiment does not need to change the brightness of the light source, so that the original light source is not damaged, and the service life of the automobile lamp is prolonged; in addition, when the car light uses as first signal lamp and second signal lamp, the diffusion barrier presents transparent state and nontransparent state respectively, and the car light can present different outward appearances promptly for increase the aesthetic feeling of car light.
In one embodiment, the control circuit outputs a first voltage to the scattering film when the automobile lamp is used as a first signal lamp, so that the scattering film is in a transparent state; the first voltage ranges from 48V to 220V.
In one embodiment, when the scattering film is in a transparent state, the transparency of the scattering film ranges from 75% to 100%.
In one embodiment, the transparency of the scattering film is 100% when the scattering film is in a transparent state.
In one embodiment, the control circuit outputs a second voltage to the scattering film when the automobile lamp is used as a second signal lamp, so that the scattering film is in a non-transparent state; the second voltage is in the range of 0V.
In one embodiment, when the scattering film is in a non-transparent state, the transparency of the scattering film ranges from 10% to 15%.
In one embodiment, the scattering film has a transparency of 10% when in a non-transparent state.
In one embodiment, the scattering film comprises at least two transparent plastic films and a liquid crystal film material positioned between the adjacent transparent plastic films.
In one embodiment, the light source includes L ED lamp, and the automotive lamp further includes a circuit board for controlling the L ED lamp, the L ED lamp is disposed on the circuit board, and the circuit board is used for controlling on and off of the L ED lamp.
In one embodiment, the automobile lamp further comprises a lamp body, wherein an accommodating cavity is formed in the lamp body, and an opening communicated with the accommodating cavity is formed in the lamp body; the light source and the scattering film are arranged in the accommodating cavity, the light emergent surface of the light source faces the opening, and the control circuit is arranged in the accommodating cavity or outside the lamp body.
In one embodiment, the vehicle lamp further comprises a lens covering the opening.
Drawings
FIG. 1 is a perspective view of an automotive lamp according to one embodiment.
FIG. 2 is a perspective view of an embodiment of an automotive lamp when used as a first signal light.
FIG. 3 is a perspective view of an embodiment of an automotive lamp when used as a second signal light.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the description of the present application, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application. Further, when an element is referred to as being "formed on" another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present.
In traditional car light technique, carry out the control of duty cycle through light source drive module to the light source to switch into different light intensity with the light that the light source sent, finally present different luminance, make same light source can regard as the light use of different effects, in order to reach the purpose of more effectual utilization car light space and higher integrated level. For example, the same light source is used to switch the light intensity of the light emitted by the light source to switch the rear position light and the brake light, or to switch the daytime running light and the front position light.
However, in the conventional automobile lamp technology, a large number of electronic components are required to form a complex light source driving module, the cost is high, the occupied space is large due to the large size of the control module, and the mode of controlling the duty ratio easily causes the light source to flicker, so that the requirement on monitoring equipment is high.
In view of at least one of the above problems, the present application provides an automotive lamp, which is disposed in a diffuser film in the automotive lamp, and changes the transparency of the diffuser film to change the light intensity of the light emitted from a light source after penetrating through the diffuser film, so as to finally present different brightness, thereby achieving the purpose of switching between a first signal lamp and a second signal lamp by using one light source.
FIG. 1 is a perspective view of an automotive lamp in one embodiment. As shown in fig. 1, the vehicle lamp 100 includes a light source 110, a diffusion film 120, and a control circuit (not shown).
Illustratively, the light source 110 includes a plurality of L ED lamps, the number of L ED lamps may be selected based on the maximum brightness requirements of the vehicle lamp 100, the color of the L ED lamps may be selected based on the function of the vehicle lamp 100, and the color of the L ED lamps may be the same or different.
The diffusion film 120 is located on the light emitting side of the light source 110, and the light emitted from the light source 110 penetrates the diffusion film 120 and then is emitted. The brightness of the lamp light emitted after penetrating the diffusion film 120, the range of the angle of the lamp light irradiation, and the like can be changed by changing the transparency of the diffusion film 120.
The control circuit is electrically connected to the diffuser film 120. The control circuit is used to output different voltages to the scattering film 120 to control the scattering film 120 to switch between the transparent state and the non-transparent state. For example, the control circuit may include a power supply, a switch, and an adjustable resistor connected in series. The diffuser film 120 is connected to an adjustable resistor. The switch controls the on-off of the power supply and the scattering film 120, so that the scattering film 120 is powered on or powered off, and when the switch is closed, the voltage output to the scattering film 120 by the control circuit can be adjusted by the adjustable resistor.
Specifically, when the automotive lamp 100 is used as a first signal lamp, the control circuit outputs a first voltage to the scattering film 120, so that the scattering film 120 is in a transparent state; and when the vehicle lamp 100 is used as a second signal lamp, the control circuit outputs a second voltage to the diffusion film 120 to make the diffusion film 120 in a non-transparent state. Note that the second voltage in this embodiment includes a voltage of 0V, that is, the scattering film 120 is deenergized. The non-transparent state is relative to the transparent state, and the non-transparent state does not mean completely opaque, for example, the non-transparent state may be a translucent state.
For example, the automotive lamp 100 switches between a front position lamp, which is a first signal lamp, and a daytime running lamp, which is a second signal lamp. When the automotive lamp 100 is used as a daytime running lamp, the control circuit outputs a first voltage to the scattering film 120, so that the scattering film 120 is in a transparent state, as shown in fig. 2, at this time, light emitted by the light source 110 penetrates through the scattering film 120, and then the light is concentrated, thereby meeting the requirement of high brightness of the daytime running lamp. When the automotive lamp 100 is used as a front position lamp, the control circuit outputs a second voltage to the scattering film 120, so that the scattering film 120 is in a non-transparent state, as shown in fig. 3, at this time, light emitted by the light source 110 is scattered when passing through the scattering film 120, and finally emitted light is low in brightness and is more dispersed, so that the requirement of a large irradiation range of the front position lamp is met.
For another example, the vehicle lamp 100 switches between a rear position lamp and a stop lamp, where the stop lamp is a first signal lamp and the rear position lamp is a second signal lamp. When the automotive lamp 100 is used as a brake lamp, the control circuit outputs a first voltage to the scattering film 120, so that the scattering film 120 is in a transparent state, as shown in fig. 2, at this time, light emitted by the light source 110 penetrates through the scattering film 120, and then the light is concentrated, thereby meeting the requirement of high brightness of the brake lamp. When the automotive lamp 100 is used as a rear position lamp, the control circuit outputs a second voltage to the scattering film 120, so that the scattering film 120 is in a non-transparent state, as shown in fig. 3, at this time, light emitted by the light source 110 is scattered when passing through the scattering film 120, and finally emitted light is low in brightness and is more dispersed, so that the requirement of a large irradiation range of the rear position lamp is met.
The first voltage and the second voltage may be set according to the characteristics of the diffusion film 120.
The automobile lamp 100 is provided with the scattering film 120 located on the light emitting side of the light source 110, so that light emitted by the light source 110 penetrates through the scattering film 120 and then is emitted, different voltages are input to the scattering film 120 through control of the control circuit, the scattering film 120 is switched between a transparent state and a non-transparent state, different light distribution regulations are met, and the purpose of switching between the use of the automobile lamp 100 as a first signal lamp and the use of the automobile lamp as a second signal lamp is achieved. Compared with the traditional automobile lamp 100, the automobile lamp 100 changes the brightness of the light emitted by the automobile lamp 100 finally by changing the transparency of the scattering film 120, and a complex light source 110 driving module is not needed, so that electronic control mechanisms are reduced, and the cost is reduced; and the space requirements for the interior of the vehicle lamp 100 are reduced; the problem that the light source 110 flickers due to the mode of changing the duty ratio can not occur; since the brightness of the light source 110 does not need to be changed in the automotive lamp 100 in this embodiment, the original light source 110 is not damaged, which is beneficial to prolonging the service life of the automotive lamp; further, when the automobile lamp 100 is used as the first signal lamp and the second signal lamp, the diffusion film 120 assumes a transparent state and a non-transparent state, respectively, i.e., the automobile lamp 100 can assume different appearances, so that the aesthetic sense of the automobile lamp 100 is increased.
The diffuser film 120 (also called a dimming film) (PD L C, polymer Dispersed L iquid crystal) is a film capable of adjusting the state of light, and the diffuser film 120 mainly works between a scattering state and a transparent state, namely, the film can be switched between a transparent state and a non-transparent state, and the visual effect is close to frosted glass when the diffuser film 120 works in the non-transparent state, so that the diffuser film 120 can also be called a frosted dimming film.
When the input voltage of the scattering film 120 changes, the molecular arrangement inside the liquid crystal film material changes, so that the scattering film 120 exhibits different transparencies. Specifically, the transparency of the scattering film 120 decreases with the decrease of the input voltage until the scattering film 120 is completely frosted when the scattering film 120 is powered off; the transparency of the diffusion film 120 increases as the input voltage increases until the diffusion film 120 assumes a completely transparent state when the input voltage reaches the rated voltage.
Optionally, the range of the first voltage is 48V to 220V, and correspondingly, the range of the transparency of the scattering film 120 in the transparent state is 75% to 100%. Further, the scattering film 120 may exhibit a completely transparent state, i.e., the scattering film 120 has a transparency of 100%.
Optionally, the range of the second voltage is 0V, that is, the scattering film 120 is powered off, and correspondingly, the range of the transparency of the scattering film 120 in the non-transparent state is 10% to 15%. Further, the scattering film 120 is in a completely frosted state, and the transparency of the scattering film 120 is 10%, in which case the scattering film 120 may also be referred to as being in a translucent state.
In one embodiment, the light source 110 includes a plurality of L ED lamps, the vehicle lamp 100 further includes a circuit board 150, the L ED lamps are disposed on the circuit board 150, wherein the circuit board 150 may be a flexible PCB circuit board, such that the flexible PCB circuit board may be bent according to the internal structure of the vehicle lamp 100. the circuit board 150 is electrically connected to the L ED lamps and is used to control the on/off of the L ED lamps.
In one embodiment, the vehicle lamp 100 further includes a lamp body 130. The lamp body 130 has an accommodating chamber therein, and the lamp body 130 is provided with an opening communicating with the accommodating chamber. The light source 110 and the scattering film 120 are both disposed in the accommodating cavity, and the light emitting surface of the light source 110 faces the opening. The control circuit may be disposed in the accommodating cavity or outside the lamp body 130. The opening of the lamp body 130 may be provided with a transparent lamp cover, so that the state of light emitted from the light source 110 after passing through the diffusion film 120 is not affected.
In one embodiment, the vehicle lamp 100 further includes a lens 140. The lens 140 covers the opening. The lens 140 may be fixed inside the lamp body 130 or fixed inside the lamp body 130. The lens 140 may be integrally formed with the lamp body 130 and embedded in the opening of the lamp body 130. The outer surface of the light-transmitting area of the lens 140 may be provided with a dermatoglyph pattern, a fish-eye pattern, a columnar pattern, etc., so that the light emitted from the final automotive lamp 100 is uniform.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. An automotive lamp, comprising:
a light source;
the scattering film is positioned on the light emitting side of the light source; and
the control circuit is electrically connected with the scattering film and is used for outputting different voltages to the scattering film so as to control the scattering film to be switched between a transparent state and a non-transparent state.
2. The vehicle lamp according to claim 1, wherein the control circuit outputs a first voltage to the diffuser film when the vehicle lamp is operated as a first signal lamp, so that the diffuser film is in a transparent state; the first voltage ranges from 48V to 220V.
3. The vehicle lamp of claim 1, wherein the diffuser film has a transparency in the range of 75% to 100% when the diffuser film is in a transparent state.
4. The vehicle lamp according to claim 3, wherein the transparency of the scattering film is 100% when the scattering film is in a transparent state.
5. The vehicle lamp of claim 1, wherein the control circuit outputs a second voltage to the diffuser film to place the diffuser film in a non-transparent state when the vehicle lamp is operating as a second signal lamp; the second voltage is in the range of 0V.
6. The vehicle lamp of claim 1, wherein the diffuser film has a transparency in the range of 10% to 15% when the diffuser film is in a non-transparent state.
7. The vehicle lamp of claim 6, wherein the diffuser film has a transparency of 10% when in a non-transparent state.
8. The vehicle lamp of claim 1, wherein the diffuser film comprises at least two transparent plastic films and a liquid crystal film material between the adjacent transparent plastic films.
9. The vehicle lamp of claim 1, wherein the light source comprises L ED lamp, the vehicle lamp further comprising a circuit board, the L ED lamp disposed on the circuit board, the circuit board for controlling the on/off of the L ED lamp.
10. The vehicle lamp according to claim 1, further comprising a lamp body, wherein the lamp body has a receiving cavity therein, and the lamp body is provided with an opening communicated with the receiving cavity; the light source and the scattering film are arranged in the accommodating cavity, the light emergent surface of the light source faces the opening, and the control circuit is arranged in the accommodating cavity or outside the lamp body.
11. The vehicle lamp of claim 10 further comprising a lens covering the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010317393.4A CN111473301A (en) | 2020-04-21 | 2020-04-21 | Automobile lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010317393.4A CN111473301A (en) | 2020-04-21 | 2020-04-21 | Automobile lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111473301A true CN111473301A (en) | 2020-07-31 |
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ID=71756013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010317393.4A Pending CN111473301A (en) | 2020-04-21 | 2020-04-21 | Automobile lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111473301A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539392A (en) * | 2020-11-16 | 2021-03-23 | 复旦大学 | Automobile headlamp system and automobile lamp |
| WO2022068504A1 (en) * | 2020-09-29 | 2022-04-07 | 华域视觉科技(上海)有限公司 | Automotive headlamp system and automotive lamp |
| CN114396596A (en) * | 2022-01-06 | 2022-04-26 | 常州信息职业技术学院 | Liquid crystal lens-based headlamp module, headlamp and vehicle |
-
2020
- 2020-04-21 CN CN202010317393.4A patent/CN111473301A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022068504A1 (en) * | 2020-09-29 | 2022-04-07 | 华域视觉科技(上海)有限公司 | Automotive headlamp system and automotive lamp |
| US11920755B2 (en) | 2020-09-29 | 2024-03-05 | Hasco Vision Technology Co., Ltd. | Automotive headlamp system and automotive lamp |
| CN112539392A (en) * | 2020-11-16 | 2021-03-23 | 复旦大学 | Automobile headlamp system and automobile lamp |
| WO2022099956A1 (en) * | 2020-11-16 | 2022-05-19 | 华域视觉科技(上海)有限公司 | Vehicle headlamp system and vehicle lamp |
| CN114396596A (en) * | 2022-01-06 | 2022-04-26 | 常州信息职业技术学院 | Liquid crystal lens-based headlamp module, headlamp and vehicle |
| CN114396596B (en) * | 2022-01-06 | 2023-12-05 | 常州信息职业技术学院 | Head lamp module based on liquid crystal lens, head lamp and vehicle with head lamp module |
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