WO2021228369A1

WO2021228369A1 - Projection structure and corresponding vehicle lamp and vehicle

Info

Publication number: WO2021228369A1
Application number: PCT/EP2020/063103
Authority: WO
Inventors: Haiquan-david CHEN; Changqi-stone WU
Original assignee: Valeo Vision
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-11-18

Abstract

A projection structure for dynamic projection which takes up little space, comprising a support part (100), a lens part (200), a film part (300), a light source part (400), a motor part (500) and a control part (600), wherein the light source part comprises at least one light source; (410) the film part comprises at least one film set (310); the lens part comprises at least one lens set (210); and the at least one light source (410), at least one film set and at least one lens set are in respective correspondence, so as to form at least one projection light path; the lens part is accommodated in the support part, and the film part is driven by the motor part, and corresponding vehicle lamp and vehicle.

Description

Projection structure and corresponding vehicle lamp and vehicle

Technical field

The present invention relates to the technical field of projection, in particular to a projection structure, and a corresponding vehicle lamp and vehicle.

Background art

Many existing specialized projection devices are large in structure, and take up a large amount of space. Ordinary projection devices available for use are often only able to project static graphics, being unable to provide dynamic graphical information. Furthermore, the dynamic information produced by existing projection methods is often relatively blurry with a poor visual effect. Moreover, it is often only possible to use one fixed item of projection information.

Summary of the invention

In view of the above, one problem solved in an embodiment of the present invention is to provide a projection structure for dynamic projection which takes up little space.

According to one aspect of the present invention, a projection structure is provided, comprising a support part, a lens part, a film part, a light source part, a motor part and a control part, wherein the light source part comprises at least one light source; the film part comprises at least one film set; the lens part comprises at least one lens set; and the at least one light source, at least one film set and at least one lens set are in respective correspondence, so as to form at least one projection light path; the lens part is accommodated in the support part, and the film part is driven by the motor part.

Those skilled in the art will understand that the projection structure according to the present invention is more compact, and suitable for installation in multiple application scenarios.

The projection structure according to the present invention comprises multiple projection light paths, and the light source part comprises multiple light sources; the film part comprises multiple film sets; the lens part comprises multiple lens sets, wherein the multiple light sources, the multiple film sets and the multiple lens sets are in respective correspondence, so as to form the multiple projection light paths.

The solution according to the present invention can achieve diverse projection effects by means of different projection light paths.

In the projection structure according to the present invention, the support part comprises a first support and a second support, the second support being used to support the first support.

Those skilled in the art will understand that the supports of the projection structure according to the present invention are more flexible and easy to separate.

In the projection structure according to the present invention, the first support comprises at least one lens channel for accommodating the lens set corresponding to the at least one projection light path.

The use of the lens channel to accommodate the lens set enables the lens set to be used to subject a light beam from the light source to better processing, such that It meets projection demands.

The projection structure according to the present Invention further comprises a control part for controlling the motor part.

Through the use of the control part, it is possible to realize a more complex control strategy, and thereby provide a greater variety of projection information to match different driving states.

The projection structure according to the present invention further comprises a transmission mechanism, wherein the film part is driven to rotate by the motor part via the transmission mechanism. The second support is used to support the transmission mechanism and the first support.

According to the solution of the present invention, the transmission mechanism can effectively realize the driving of multiple sets of films of the film part by the motor part, so as to provide corresponding projection effects.

In the projection structure according to the present invention, each of the at least one lens set comprises at least one posterior lens located between the film part and the corresponding projection outlet.

In the projection structure according to the present invention, the at least one posterior lens is located in the posterior projection channel.

Through the use of the posterior lens, it is possible to process a light beam transmitted through the film part to realize a better projection effect.

In the projection structure according to the present invention, the lens set further comprises at least one anterior lens located between the light source part and the film part.

The projection structure according to the present invention further comprises at least one anterior projection channel for accommodating at least one anterior lens respectively Included In each of the at least one lens set.

Through the use of the anterior lens, it Is possible to treat a light beam from the light source, and preferably, cause the light beam from the light source to become parallel light for transmission through the film, so as to uniformly Illuminate the film.

In the projection structure according to the present Invention, the motor part Is a stepper motor.

In the projection structure according to the present invention, a step angle of the motor corresponds to the number of films in the at least one film set used in the film part.

In the projection structure according to the present invention, the control part is used to receive input information, so as to trigger a corresponding control signal, and output the control signal to the motor part and/or light source part.

The controlling of the motor part and light source by the control part enables a greater diversity of projection effects to be provided, and the projection quality to be improved.

In the projection structure according to the present invention, the control part can acquire at least any one of the following items of information:

- film position information;

- vehicle speed information;

- vehicle operation information.

By acquiring Input Information from multiple sources, and then determining respectively corresponding control signals, a greater diversity of projection effects can be obtained to respond to the demands of a greater variety of scenarios.

In the projection structure according to the present invention, the control part can acquire sensing input Information from an infrared sensor, wherein the infrared sensor is used for detecting one or more specific positions on the film part.

Detecting the specific position on the film part facilitates calibration of a original position of the projection structure, so as to obtain a better projection effect.

According to another aspect of the present Invention, a vehicle lamp Is provided, the vehicle lamp comprising the projection structure.

According to another aspect of the present invention, a vehicle Is provided, the vehicle comprising the vehicle lamp. Compared with the prior art, the present invention has the following advantages: The projection structure can still provide a dynamic image while maintaining a compact structure. By controlling the respective operating time of the light source and the motor part, it is ensured that the film is subjected to projection only when stopped, thereby avoiding image blur caused by film rotation, so that projection quality is better. Furthermore, the control part may have multiple inputs, and output corresponding control signals on the basis of different inputs, such that the projection structure can provide one or more different projection effects for multiple application scenarios, or even provide multiple projection images simultaneously, so the range of usage scenarios is broader.

Brief description of the drawings

Other features, objects and advantages of the present invention will become more obvious through perusal of a detailed description of non-limiting embodiments which makes reference to the accompanying drawings below:

Fig. 1 shows a three-dimensional structural schematic diagram of a projection structure according to an embodiment of the present invention.

Fig. 2 shows a three-dimensional structural schematic diagram of a projection structure according to another embodiment of the present invention.

Fig. 3 shows a three-dimensional structural schematic diagram of a projection structure according to another embodiment of the present invention.

Fig. 4 shows a structural schematic diagram of a film part of a projection structure according to another embodiment of the present invention.

Fig. 5 shows schematically an exploded diagram of a projection structure according to an embodiment of the present invention.

List of Reference Signs

Particular embodiments

Preferred embodiments of the present invention are described in greater detail below with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be realized in various forms, and should not be restricted by the embodiments expounded here. On the contrary, these embodiments are provided in order to make the present invention more thorough and complete, and to enable the scope of the present invention to be conveyed to those skilled in the art in a complete fashion.

According to embodiments of the present invention, the following are disclosed: a projection structure, a method for projection, a vehicle lamp having the projection structure, and a vehicle using the vehicle lamp.

Reference is made to fig. 1. Fig. 1 shows a three-dimensional schematic diagram of a projection structure according to an embodiment of the present invention.

The projection structure according to the embodiment shown in fig. 1 comprises a support part 100, a lens part 200, a film part 300, a light source part 400, a motor part 500 and a control part 600.

The light source part 400 comprises at least one light source 410; the film part 300 comprises at least one film set 310; the lens part 200 comprises at least one lens set 210. Furthermore, the at least one light source 410, at least one film set 310 and at least one lens set 210 are in respective correspondence, so as to form at least one projection light path.

The lens part 200 is accommodated in the support part 100, and the film part 300 is driven by the motor part 500.

The film part 300 comprises at least one film set 310, and a flywheel plate 320 for accommodating the at least one film set 310. Referring to fig. 4, the film part 300 may comprise two film sets 310, and has the flywheel plate 320 capable of accommodating the two film sets 310.

The light source 410 according to the present invention may be various components capable of emitting light; preferably, the light source 410 according to the present invention is an LED light source.

The control part 600 may in general be realized using a micro controller unit (MCU). Furthermore, it may be separated by a physical distance from a part used for receiving an input, such as a sensor 601.

Preferably, the control part 600 further comprises a support plate. Preferably, the control part 600 is an integrated printed circuit board assembly (PCBA) having a microcontroller such as an MCU. More preferably, the integrated printed circuit board assembly further comprises the sensor 601.

Specifically, the light source part 400 is located between the motor part 500 and the film part 300, and used for lighting up a film of the film part 300.

Specifically, the projection structure according to the present invention may comprise one projection light path or multiple projection light paths.

More specifically, the light source part 400 comprises multiple light sources 410; the film part 300 comprises multiple film sets 310; the lens part 200 comprises multiple lens sets 210, wherein the multiple light sources 410, the multiple film sets 310 and the multiple lens sets 210 are in respective correspondence, so as to form the multiple projection light paths.

More preferably, the projection structure according to the present invention further comprises a light exit cover plate 900, the light exit cover plate 900 having a projection outlet 910 corresponding to each projection light path.

According to an embodiment of the present invention, the support part 100 comprises a first support 110 and a second support 120, wherein the second support 120 is used for supporting the first support 110. Preferably, the first support 110 comprises at least one posterior projection channel 130 for accommodating the lens(es) corresponding to the at least one projection light path.

Specifically, referring to figs. 3 and 5, the first support 110 comprises the posterior projection channel 130, in order to accommodate one or more lenses of the corresponding lens set 210.

According to a preferred embodiment of the present invention, each of the at least one lens set 210 comprises at least one posterior lens 2b located between the film part 300 and the corresponding projection outlet 910.

Preferably, the at least one posterior lens 2b is located in the posterior projection channel 130.

According to another preferred embodiment of the present invention, the lens set 210 further comprises at least one anterior lens 2a located between the light source part 400 and the film part 300.

More preferably, the projection structure further comprises at least one anterior projection channel 800 for accommodating the at least one anterior lens 2a respectively included in each of the at least one lens set 210.

According to an embodiment of the invention, the motor part 500 uses a stepper motor. More preferably, a step angle of the stepper motor used corresponds to the number of films used in each film set 310 in the film part 300.

For example, if the film part 300 comprises two film sets 310, then the step angle is set to be simultaneously divisible by an angular distance separating the films of the two film sets 310 respectively.

According to another embodiment of the present invention, the control part 600 according to this embodiment is used to receive input information, in order to trigger a corresponding control signal, and output the control signal to the motor part 500 and/or light source part 400.

The control part 600 acquires the input information by means of a detection apparatus such as a sensor; or the control part 600 may acquire vehicle driving information directly, for example by communication with a vehicle centre console, in order to obtain a current driving speed, etc.

Preferably, the control part 600 may comprise multiple sensors 601.

More preferably, the input information obtained by the control part 600 comprises but is not limited to at least any one of the following:

1) film positioning information, e.g. initial position information for each set of films, or position information for each film in each film set, etc.;

2) vehicle speed information, e.g. specific speed-per-hour information for current vehicle speed, or vehicle speed grade information, etc.;

3) vehicle operation information, e.g. an operation of stepping on a brake, an operation of opening a vehicle door, etc.

Preferably, the control part 600 determines the triggering of startup or shutdown of the projection structure according to the input information; or the control part 600 controls an operating time and operating interval of the projection structure, etc., according to the input information.

According to a preferred solution of this embodiment, the control part 600 may obtain sensing input information from an infrared sensor 601. The infrared sensor 601 is used to detect one or more specific positions on the film part 300, in order to detect the position of the film set 310 currently being used. More preferably, the control part 600 determines one or more film sets 310 which need to be projected according to the input information.

Specifically, the control part 600 determines the startup of one or more light sources 410 according to the input information, thereby realizing the projection of one or more film sets 310 of the projection channel corresponding to the one or more light sources 410.

For example, the projection apparatus according to the present invention has three projection light paths P1, P2 and P3. When the control part 600 detects, by means of a sensor, operation information relating to the opening of a vehicle door, trigger information is outputted, in order to trigger the lighting- up of the light source 410 corresponding to projection channel P1, and a projection image of a parking symbol is outputted. When the control part 600 detects, by means of a sensor, operation information relating to vehicle cornering, the lighting-up of the light source 410 corresponding to projection channel P2 is triggered, and a projection image of a cornering indication arrow is outputted. When the control part 600 detects, by means of a sensor, operation information relating to vehicle acceleration, the lighting-up of the light source 410 corresponding to channel P3 is triggered, thereby outputting an animation effect image of an acceleration arrow moving forward, etc.

In addition, those skilled in the art will understand that the control part 600 may use various forms of sensor to acquire the necessary information, e.g. an infrared sensor or magnetic sensor, etc. Those skilled in the art can determine the sensor to be used according to actual circumstances and needs, no further description is given here.

According to the solution of the present invention, the projection structure can still provide a dynamic image while maintaining a compact structure. By controlling the respective operating time of the light source and the motor part, it is ensured that the film is subjected to projection only when stopped, thereby avoiding image blur caused by film rotation, so that projection quality is better. Furthermore, the control part may have multiple inputs, and output corresponding control signals on the basis of different inputs, such that the projection structure can realize feedback for multiple scenarios, providing one or more different projection effects, or even providing multiple projection images simultaneously, thus having a wider range of application scenarios.

To a person skilled in the art, it is obvious that the present invention is not limited to the details of the demonstrative embodiments above, and could be implemented in other specific forms without deviating from the spirit or fundamental features of the present invention. Thus, regardless of which viewpoint is taken, the embodiments should be regarded as being demonstrative and non-limiting; the scope of the present invention is defined by the attached claims and not by the explanation above, hence it is intended that all changes falling within the meaning and scope of equivalent key elements of the claims be included in the present invention. No reference signs in the claims should be regarded as limiting the claims concerned. In addition, it is obvious that the word “comprises” does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or apparatuses presented in system claims may also be realized by one unit or apparatus by means of software or hardware. Words such as first and second are used to indicate designations, and do not indicate any specific order.

Claims

1. Projection structure, comprising a support part (100), a lens part (200), a film part (300), a light source part (400), a motor part (500) and a control part (600), wherein the light source part (400) comprises at least one light source (410); the film part (300) comprises at least one film set (310); the lens part (200) comprises at least one lens set (210); and the at least one light source (410), at least one film set (310) and at least one lens set (210) are in respective correspondence, so as to form at least one projection light path; the lens part (200) is accommodated in the support part (100), and the film part (300) is driven by the motor part (500).

2. Projection structure according to Claim 1, wherein the projection structure comprises multiple projection light paths, and the light source part (400) comprises multiple light sources (410); the film part (300) comprises multiple film sets (310); the lens part (200) comprises multiple lens sets (210), wherein the multiple light sources (410), the multiple film sets (310) and the multiple lens sets (210) are in respective correspondence, so as to form the multiple projection light paths.

3. Projection structure according to Claim 1 or 2, wherein the support part (100) comprises a first support (110) and a second support (120), the second support (120) being used to support the first support (110).

4. Projection structure according to Claim 3, wherein the first support (110) comprises at least one posterior projection channel (130) for accommodating the lens set corresponding to the at least one projection light path.

5. Projection structure according to any one of Claim 4, wherein the projection structure further comprises a transmission mechanism (700), wherein the film part (300) is driven to rotate by the motor part (500) via the transmission mechanism (700), the second support (120) is used to support the transmission mechanism (700) and the first support (110).

6. Projection structure according to any one of Claims 1, 2 and 4, wherein each of the at least one lens set (210) comprises at least one posterior lens (2b) located between the film part (300) and the corresponding projection outlet.

7. Projection structure according to Claim 6, wherein the at least one posterior lens (2b) is located in the posterior projection channel (130).

8. Projection structure according to Claim 6, wherein the lens set (210) further comprises at least one anterior lens (2a) located between the light source part (400) and the film part (300).

9. Projection structure according to any one of Claims 1, 2, 4, 7 and 8, wherein the projection structure further comprises at least one anterior projection channel (800) for accommodating at least one anterior lens (2a) respectively included in each of the at least one lens set (210).

10. Projection structure according to any one of Claims 1, 2, 4, 7 and 8, wherein the motor part (500) is a stepper motor.

11. Projection structure according to Claim 10, wherein a step angle of the motor part (500) corresponds to the number of films in the at least one film set (310) used in the film part (300).

12. Projection structure according to any one of Claims 1, 2, 4, 7 and 8, wherein the control part (600) is used to receive input information, so as to trigger a corresponding control signal, and output the control signal to the motor part (500) and/or light source part (400).

13. Projection structure according to Claim 12, wherein the control part (600) can acquire at least any one of the following items of information:

- film position information;

- vehicle speed information;

- vehicle operation information.

14. Projection structure according to any one of Claims 1, 2, 4, 7 and 8, wherein the control part (600) can acquire sensing input information from an infrared sensor (601), wherein the infrared sensor (601) is used for detecting one or more specific positions on the film part (300).

15. Vehicle lamp, wherein the vehicle lamp comprises the projection structure according to any one of Claims 1 - 14.

16. Vehicle, wherein the vehicle comprises the vehicle lamp according to Claim 15.