CN116615354A - Liquid crystal projection lamp for vehicle and vehicle - Google Patents
Liquid crystal projection lamp for vehicle and vehicle Download PDFInfo
- Publication number
- CN116615354A CN116615354A CN202180082247.0A CN202180082247A CN116615354A CN 116615354 A CN116615354 A CN 116615354A CN 202180082247 A CN202180082247 A CN 202180082247A CN 116615354 A CN116615354 A CN 116615354A
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- Prior art keywords
- liquid crystal
- module
- lens
- driving
- lamp
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
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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
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
- F21S41/64—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Liquid Crystal (AREA)
Abstract
A liquid crystal projection lamp for a vehicle and the vehicle, wherein the projection lamp comprises a driving module, an imaging lens module, an input lens module, a light source and a lamp housing (5); the driving module comprises a driving plate (11) and a liquid crystal screen (12), and the driving plate (11) is used for sending projection data received from the whole vehicle controller to the liquid crystal screen (12); the liquid crystal screen (12) is used for displaying a projection image corresponding to the projection data; the imaging lens module is used for amplifying the projection image and outputting the amplified projection image; the light source is capable of being turned on and/or off in response to a control instruction of the drive plate (11); the input lens module is arranged between the light source and the imaging lens module, and the liquid crystal screen (12) is arranged between the input lens module and the imaging lens module; the driving module, the imaging lens module and the input lens module are all accommodated in the lamp housing (5), and a limiting structure matched with the driving module, the imaging lens module and the input lens module is arranged in the lamp housing (5). The liquid crystal projection lamp for the vehicle has low cost and reliable performance compared with a DPL projection device.
Description
The invention relates to the technical field of vehicles, in particular to a liquid crystal projection lamp for a vehicle and the vehicle.
As vehicle entertainment systems are increasingly configured, vehicle infotainment systems have become robust and are able to interface with a variety of mobile computing devices to allow users to use various types of media within the vehicle, including music and video. Motor vehicles are increasingly being used as one of the devices available for recreation and entertainment. The user is no longer satisfied with the projection of conventional custom LOGO, nor with the projection of black-and-white pictures, and in order to solve this problem, most of projectors which are configured on existing vehicles and project patterns on the ground and the wall surface arranged outside the vehicles directly project images and/or videos by adopting DLP projection technology. However, DLP projection devices have high cost, high chip supply risk, and are difficult to be a popular configuration.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the first aspect of the present invention provides a liquid crystal projection lamp for a vehicle, comprising a driving module, an imaging lens module, an input lens module, a light source and a lamp housing;
the driving module comprises a driving plate and a liquid crystal screen, and the driving plate is used for sending projection data received from the whole vehicle controller to the liquid crystal screen; the liquid crystal screen is used for displaying a projection image corresponding to the projection data; the imaging lens module is used for amplifying the projection image and outputting the amplified projection image; the light source is capable of being turned on and/or off in response to a control instruction of the driving board;
the input lens module is arranged between the light source and the imaging lens module, and the liquid crystal screen is arranged between the input lens module and the imaging lens module; the driving module, the imaging lens module and the input lens module are all accommodated in the lamp housing, and a limiting structure matched with the driving module, the imaging lens module and the input lens module is arranged in the lamp housing.
Further, the driving plate comprises a signal input end and a signal output end; the signal output end is respectively connected with the liquid crystal display and the light source.
Further, the driving module further comprises a driving housing, the driving housing is a cavity provided with a first opening and a second opening, the cavity is used for accommodating and fixing the driving plate, the first opening is used for allowing the signal output end to pass through, and the second opening is used for allowing the signal input end to pass through.
Further, the driving module includes a plurality of driving boards, and a plurality of the driving boards are connected to each other.
Further, the liquid crystal screen comprises a transflective liquid crystal screen.
Further, the imaging lens module comprises a lens support and an imaging lens group, the lens support is used for supporting and limiting the imaging lens group, the imaging lens group comprises a plurality of imaging lenses, and optical axes of the imaging lenses are coincident.
Further, the imaging lens module further comprises an outer lens, the outer lens is arranged on the light emitting side of the imaging lens module, and the outer lens is connected with the lens support.
Further, the input lens comprises an optical lens and a Fresnel lens;
the optical axes of the optical lens, the Fresnel lens and the input lens are coincident, the optical lens and the Fresnel lens are arranged at intervals, the optical lens is close to the light source, and the Fresnel lens is close to the liquid crystal screen.
Further, the LED lamp further comprises a heat dissipation module, wherein the heat dissipation module is connected with the light source, the heat dissipation module is connected with the lamp housing, and the heat dissipation module is arranged outside the lamp housing.
A second aspect of the present invention provides a vehicle comprising a liquid crystal projection lamp for a vehicle according to the first aspect of the present invention.
The liquid crystal projection lamp for the vehicle and the vehicle provided by the embodiment of the invention can project the image on the liquid crystal screen onto the ground, the wall surface and other carriers in an imaging mode, and the small-size liquid crystal screen is adopted to realize large-size image projection.
Additional aspects and advantages of the invention 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 the invention.
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of a liquid crystal projection lamp for a vehicle according to an embodiment of the present invention;
FIG. 2 is an exploded view of a liquid crystal projector lamp for a vehicle according to an embodiment of the present invention;
FIG. 3 is an assembled schematic view of a driving module according to an embodiment of the present invention;
FIG. 4 is an assembled schematic view of an imaging lens module according to an embodiment of the present invention;
FIG. 5 is an assembly schematic diagram of a lens and a driving module according to an embodiment of the present invention;
FIG. 6 is an exploded view of a light source and heat dissipating module according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a relative position of a lamp housing and a heat dissipation module according to an embodiment of the invention.
Wherein, the driving plate 11, the liquid crystal screen 12 and the driving shell 13;
21-a lens holder, 22-an imaging lens group, 23-an outer lens;
31-optical lens, 32-fresnel lens;
41-light emitting diode, 42-lamp bead plate;
5-lamp shell, 6-heat dissipation module, 7-screw, 8-sealing washer.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality.
Examples
Fig. 1 is a perspective view of a liquid crystal projection lamp for a vehicle according to an embodiment of the present invention, and fig. 2 is an exploded view of a liquid crystal projection lamp for a vehicle according to an embodiment of the present invention, specifically as shown in fig. 1 and fig. 2, a liquid crystal projection lamp for a vehicle according to an embodiment of the present invention includes a driving module, an imaging lens module, an input lens module, a light source and a lamp housing 5.
The vehicle-mounted projection lamp disclosed in the prior art directly adopts a DLP projection technology, and the DLP optical machine has the advantages of complex design, poor temperature/vibration resistance, high cost, and large chip supply risk for exclusive suppliers.
Fig. 3 is an assembly schematic diagram of a driving module provided in an embodiment of the present invention, please refer to fig. 3, fig. 3 (left) is an assembled driving module, fig. 3 (right) is an assembled driving module, the driving module includes a driving board 11 and a liquid crystal screen 12, and the driving board 11 is used for transmitting projection data received from a vehicle controller to the liquid crystal screen 12; the liquid crystal screen 12 is used for displaying a projection image corresponding to the projection data, and preferably, the projection image is a color image;
with continued reference to fig. 2 and 3, the driving module further includes a driving housing 13, where the driving housing 13 is used for fixing and wrapping the driving board 11, and in order to enable the automotive liquid crystal projection lamp to work normally in various environments, for example, in sandy weather, rainy days, etc., preferably, the driving housing 13 has a dustproof and waterproof effect, and in a specific example, the dustproof and waterproof level of the driving housing 13 is IP67. The driving housing 13 may be a cavity provided with a first opening for passing the signal output terminal and a second opening for passing the signal input terminal, for receiving and fixing the driving plate 11. It should be noted that the driving housing 13 may also take other shapes that can be used to fix and wrap the driving board 11, which is not limited to this embodiment.
The driving board 11 may be divided into a plurality of blocks in consideration of the limitation of the installation space, and a block layout is adopted to fully utilize/adapt the space. Fig. 3 (left) shows a case where the driving module includes two driving boards 11, the two driving boards 11 are connected to each other, and in other embodiments, the number of driving boards 11 of the driving module may be set to other positive integer values, for example, 3 blocks, 4 blocks, etc., which is not limited thereto. The adoption of the block layout can reduce the requirement of the liquid crystal projection lamp on the installation space, so that the liquid crystal projection lamp can be applied to the area with limited installation space on a vehicle, such as a rearview mirror.
The driving board 11 includes a signal input end and a signal output end, and the driving board 11 realizes communication with a vehicle controller and controls the liquid crystal screen 12 and the light source through the signal input end and the signal output end. With continued reference to fig. 2 and 3, the signal input end may be a connector protruding from the driving board 11, where the connector is connected to the whole vehicle controller through a wire harness, and the signal input end communicates with the whole vehicle controller through a CAN network and receives a signal source input from the whole vehicle controller, where the signal source input may be a CAN message of a picture and/or a small video, so that the projected content is not limited to a preset fixed pattern such as a LOGO. The signal output terminal is connected with the liquid crystal screen 12 and the light source respectively, and is used for inputting images and small videos to the liquid crystal wafer and sending control signals to the light source to provide illumination conditions required by imaging. The light source can be turned on and/or off in response to a control instruction of the driving board 11. In particular, the light source may be an LED light source, and other types of light sources may be used herein as desired.
Specifically, the lcd 12 employs a transflective lcd 12, so that light from the input lens module can pass through the liquid crystal wafer, and the image on the liquid crystal is driven out, i.e. the image on the lcd 12 is output to the imaging lens module.
In order to achieve the purposes of small liquid crystal and large image, the embodiment of the invention also comprises an imaging lens module which is used for amplifying the projection image output by the liquid crystal screen 12 and outputting the amplified projection image output by the liquid crystal screen 12 to the light-emitting side of the imaging lens module; that is, the imaging lens is used to enlarge and project the light emitted from the liquid crystal panel 12 to the outside.
Fig. 4 is an assembly schematic diagram of an imaging lens module according to an embodiment of the present invention, please refer to fig. 4, fig. 4 (left) shows an exploded view of a bracket lower cover and an imaging lens group 22, fig. 4 (middle) shows an assembly schematic diagram of the bracket lower cover and the imaging lens group 22, and fig. 4 (right) shows an assembled imaging lens module. The imaging lens module includes a lens holder 21 and an imaging lens group 22, the lens holder 21 is used for supporting and limiting the imaging lens group 22, the imaging lens group 22 includes a plurality of imaging lenses, and optical axes of the plurality of imaging lenses coincide. The lens holder 21 includes a holder upper cover and a holder lower cover that cooperate with each other to fix and wrap the imaging lens group 22.
The imaging lens module further comprises an outer lens 23, the outer lens 23 is arranged on the light emitting side of the imaging lens module, the outer lens 23 is connected with the lens support 21, the outer lens 23 is made of a light-transmitting material, and the outer lens 23 is used for outputting pictures and plays a role in protecting the imaging lens module.
The input lens includes an optical lens 31 and a fresnel lens 32; the input lens is used as a backlight source of the liquid crystal wafer, the LED point light sources are scattered through the Fresnel lens 32 and the optical lens 31, wherein the optical lens 31 is used for converting light emitted by the light source into uniform light, and the Fresnel lens 32 is used for converting the LED point light sources into parallel light through the Fresnel lens 32. The Fresnel lens 32 is designed with optical patterns, optical axes of the optical lens 31, the Fresnel lens 32 and the input lens are coincident, the optical lens 31 and the Fresnel lens 32 are arranged at intervals, and the arrangement positions of the optical lens 31 and the Fresnel lens 32 meet focusing requirements. The light lens 31 is disposed adjacent to the light source and the fresnel lens is disposed adjacent to the liquid crystal screen 12. After the product is molded, the optical lens 31 and the Fresnel lens 32 are fixed on the lens support 21, the distance between the optical lens 31 and the Fresnel lens 32 is not adjustable, and the magnification of the image output by the liquid crystal screen 12 is related to the optical lens 31, the Fresnel lens 32 and the distance between the optical lens and the Fresnel lens 32.
The input lens module is arranged between the light source and the imaging lens module, and the liquid crystal screen 12 is arranged between the input lens module and the imaging lens module; the driving module, the imaging lens module and the input lens module are all accommodated in the lamp housing 5, and a limiting structure matched with the driving module, the imaging lens module and the input lens module is arranged in the lamp housing 5.
The lamp housing 5 comprises a lamp housing upper cover and a lamp housing lower cover, a first limit structure component which is used for matching the shapes of the driving module, the imaging lens module, the input lens module, the light source and the like is arranged in the lamp housing upper cover, a second limit structure component which is used for matching the shapes of the driving module, the imaging lens module, the input lens module, the light source and the like is arranged in the lamp housing lower cover, and when the lamp housing upper cover and the lamp housing lower cover are folded, the first limit structure component and the second limit structure component are mutually matched, so that the limiting and fixing effects on the driving module, the imaging lens module, the input lens module, the light source and the like are achieved.
Fig. 5 is an assembly schematic diagram of a lens and a driving module provided in an embodiment of the present invention, please refer to fig. 5, fig. 5 (left) shows a relative positional relationship among an imaging lens module, an input lens module, a driving module and a lamp housing 5, fig. 5 (middle) shows a state in an assembly process, in which the imaging lens module, the input lens module are already installed in a lamp housing upper cover, the driving module is installed in a lamp housing lower cover, the lamp housing upper cover and the lamp housing lower cover are not yet closed, and fig. 5 (right) shows an assembled state, in which the lamp housing upper cover and the lamp housing lower cover are already closed.
Specifically, the lamp housing upper cover and the lamp housing lower cover are mutually clamped, and after the clamping is finished, the heat dissipation quick bolt is installed and fixed.
Fig. 6 is an exploded view of a light source and a heat dissipation module according to an embodiment of the present invention, referring to fig. 6, the vehicle lcd projection lamp according to an embodiment of the present invention further includes a heat dissipation module 6, where the heat dissipation module 6 is used for reducing the temperature of the light source, and the light source is connected with the heat dissipation module 6. In detail, the light source comprises a light emitting diode 41 and a lamp bead plate 42 for fixing the light emitting diode 41, the lamp bead plate 42 is connected with the heat dissipation module 6 through a screw 7, a sealing ring 8 is further arranged between the lamp bead plate 42 and the heat dissipation module 6, and the heat dissipation block is tightly pressed with the body and is waterproof under the action of the sealing ring 8.
The heat dissipation module 6 is connected to the lamp housing 5, the heat dissipation module 6 is disposed outside the lamp housing 5, fig. 7 is a schematic diagram of the relative positions of the lamp housing and the heat dissipation module provided by the embodiment of the invention, please refer to fig. 7, specifically, as shown in fig. 7, the heat dissipation module 6 is disposed at one end of the lamp housing 5.
The embodiment of the invention also provides a vehicle, which comprises the liquid crystal projection lamp for the vehicle. It is noted that the vehicle of the present invention may be a truck, sport utility vehicle, van, caravan, or any other type of vehicle without departing from the scope of the present disclosure.
The embodiment of the invention can project the image on the liquid crystal screen onto the ground, the wall surface and other carriers in an imaging mode, adopts the small-size liquid crystal screen to realize large-size image projection, greatly reduces the cost of products compared with a projection device adopting a DPL imaging technology, has reliable performance, and makes the large-scale configuration possible.
It should be noted that: the sequence of the embodiments of the present invention is only for description, and does not represent the advantages and disadvantages of the embodiments. And the foregoing description has been directed to specific embodiments of this specification. Other embodiments are within the scope of the following claims. In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (10)
- The automobile-used liquid crystal projection lamp is characterized by comprising a driving module, an imaging lens module, an input lens module, a light source and a lamp shell (5);the driving module comprises a driving plate (11) and a liquid crystal screen (12), wherein the driving plate (11) is used for sending projection data received from a whole vehicle controller to the liquid crystal screen (12); the liquid crystal screen (12) is used for displaying a projection image corresponding to the projection data; the imaging lens module is used for amplifying the projection image and outputting the amplified projection image; the light source is capable of being turned on and/or off in response to a control instruction of the drive board (11);the input lens module is arranged between the light source and the imaging lens module, and the liquid crystal screen (12) is arranged between the input lens module and the imaging lens module; the driving module, the imaging lens module and the input lens module are all accommodated in the lamp housing (5), and a limiting structure matched with the driving module, the imaging lens module and the input lens module is arranged in the lamp housing (5).
- A liquid crystal projector lamp for vehicles according to claim 1, wherein the driving plate (11) comprises a signal input terminal and a signal output terminal; the signal output end is respectively connected with the liquid crystal display (12) and the light source.
- A liquid crystal projector lamp for vehicles according to claim 2, characterized in that the driving module further comprises a driving housing (13), the driving housing (13) being a cavity provided with a first opening for the signal output to pass through and a second opening for the signal input to pass through, the cavity being for receiving and fixing the driving plate (11).
- A liquid crystal projector lamp for vehicles according to claim 1, wherein the driving module comprises a plurality of driving plates (11), and a plurality of the driving plates (11) are connected to each other.
- A liquid crystal projector lamp for vehicles according to claim 1, characterized in that the liquid crystal screen (12) comprises a transflective liquid crystal screen (12).
- A liquid crystal projection lamp for vehicles according to claim 1, characterized in that the imaging lens module comprises a lens holder (21) and an imaging lens group (22), the lens holder (21) being used for supporting and limiting the imaging lens group (22), the imaging lens group (22) comprising a plurality of imaging lenses, the optical axes of the plurality of imaging lenses being coincident.
- The liquid crystal projection lamp for vehicles according to claim 6, wherein the imaging lens module further comprises an outer lens (23), the outer lens (23) is disposed on the light-emitting side of the imaging lens module, and the outer lens (23) is connected to the lens holder (21).
- A liquid crystal projector lamp for vehicles according to claim 1, characterized in that the input lens comprises an optical lens (31) and a fresnel lens (32);the optical lens (31), the Fresnel lens (32) and the optical axis of the input lens coincide, the optical lens (31) and the Fresnel lens (32) are arranged at intervals, the optical lens (31) is close to the light source, and the Fresnel lens is close to the liquid crystal screen (12).
- The liquid crystal projection lamp for vehicles according to claim 1, further comprising a heat dissipation module (6), wherein the heat dissipation module (6) is connected with the light source, the heat dissipation module (6) is connected with the lamp housing (5), and the heat dissipation module (6) is disposed outside the lamp housing (5).
- A vehicle comprising a liquid crystal projection lamp for vehicles according to any one of claims 1 to 9.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2021/117131 WO2023035137A1 (en) | 2021-09-08 | 2021-09-08 | Liquid crystal projection lamp for vehicle, and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116615354A true CN116615354A (en) | 2023-08-18 |
Family
ID=85506145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180082247.0A Pending CN116615354A (en) | 2021-09-08 | 2021-09-08 | Liquid crystal projection lamp for vehicle and vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116615354A (en) |
| WO (1) | WO2023035137A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201659923U (en) * | 2010-04-19 | 2010-12-01 | 范桦 | Intelligent car lamp device capable of imaging on road surface |
| CN107204161A (en) * | 2016-08-15 | 2017-09-26 | 林德（中国）叉车有限公司 | A kind of vehicle safety projection arrangement and fork truck and the method for realizing vehicle safety prompting |
| CN109899764A (en) * | 2017-12-07 | 2019-06-18 | 斯坦雷电气株式会社 | Lamp system for vehicle |
| DE102018102175A1 (en) * | 2018-01-31 | 2019-08-01 | Axion Ag | Optical unit for displaying information and lighting in and on the motor vehicle |
| CN111726593A (en) * | 2019-03-20 | 2020-09-29 | 常州星宇车灯股份有限公司 | Novel car light projection control system |
| CN110107859A (en) * | 2019-05-09 | 2019-08-09 | 张若晨 | A kind of vision control system, method and the automobile of intelligent and safe headlight |
-
2021
- 2021-09-08 WO PCT/CN2021/117131 patent/WO2023035137A1/en active Application Filing
- 2021-09-08 CN CN202180082247.0A patent/CN116615354A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023035137A1 (en) | 2023-03-16 |
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