Lighting equipment and lights

Abstract

A lighting device and a vehicle lamp, the lighting device comprising a light source, a first reflection module, a lens assembly, a feedback module and a second reflection module; the first reflection module is used to reflect a display image based on the light emitted by the light source; the lens assembly is arranged on the outgoing light path of the first reflection module, and the lens assembly is used to adjust the display image; the feedback module is used to identify the light spot formed by the display image, and when the image of the light spot meets the fault judgment condition, control the second reflection module to reflect the light provided by the light source to the lens assembly. The feedback module can judge whether the first reflection module fails according to the identified light spot. When the first reflection module fails and cannot reflect normally, the feedback module can control the second reflection module to directly reflect the light of the light source to the lens assembly, so as to achieve the lighting effect and eliminate the safety hazard caused by the failure of the first reflection module.

Description

Technical Field

[0001] The present application belongs to the field of lighting technology, and in particular, relates to a lighting device and a vehicle lamp. Background Art

[0002] At present, imaging systems have been applied in the field of automotive lighting. Imaging systems can make car lights project various light and shadow patterns, forming many "car languages" composed of light and shadow patterns.

[0003] The imaging principle of the automotive lighting imaging system, which evolved from the through-type front projection imaging system, is similar to that of a projector and can project various patterns onto the road surface.

[0004] However, as an electronic device, the complex lighting imaging system is subject to the possibility of failure. If the display chip of the lighting imaging system suddenly fails, it will create a safety hazard when driving at night. Utility Model Content

[0005] The purpose of the present application is to provide a lighting device and a vehicle lamp, aiming to solve the problem of sudden failure of display chips in traditional vehicle lighting imaging systems.

[0006] A first aspect of an embodiment of the present application provides a lighting device, including:

[0007] light source;

[0008] A first reflection module, used for reflecting a display image based on the light emitted by the light source;

[0009] A lens assembly, arranged on the outgoing light path of the first reflection module, for adjusting the displayed image;

[0010] A feedback module and a second reflection module, wherein the feedback module is used to identify the light spot formed by the displayed image, and when the difference between the parameter of the light spot and the preset value is greater than the corresponding threshold value, control the second reflection module to reflect the light provided by the light source to the lens assembly.

[0011] In one embodiment, the second reflection module includes a reflection unit and a power unit;

[0012] The reflection unit is connected to the power unit, and the reflection unit is used to reflect the light;

[0013] The power unit is connected to the feedback module, and is used to control the reflection unit to be inserted into or leave between the light source and the first reflection module.

[0014] In one embodiment, the reflection unit includes a total reflection lens.

[0015] In one embodiment, the power unit includes a rack, a transmission structure and a power source;

[0016] The reflection unit is connected to the rack, and the transmission structure is respectively engaged with the rack and the output end of the power source. The power source is used to drive the rack to move through the transmission structure to control the reflection unit to insert or leave between the light source and the first reflection module.

[0017] In one embodiment, the total reflection lens is provided with a notch, and the power unit includes a power source;

[0018] The total reflection lens is fixed to the output end of the power source;

[0019] The power source is used to drive the total reflection lens to rotate, so as to control the non-notch portion of the reflection unit to insert into or leave between the light source and the first reflection module.

[0020] In one embodiment, the reflection unit includes a first DMD chip, and the first DMD chip is used for total reflection of the light.

[0021] In one embodiment, the first reflection module includes a second DMD chip, and the second DMD chip is used to reflect the display image based on the received light.

[0022] In one embodiment, the first reflection module includes an LCOS chip, and the LCOS chip is used to reflect the display image based on the received light.

[0023] In one embodiment, the feedback module includes a photosensitive unit and a control unit, the photosensitive unit is used to obtain an image of the light spot, the control unit is connected to the photosensitive unit, and the control unit is used to control the second reflection module based on the image of the light spot.

[0024] A second aspect of the embodiments of the present application provides a vehicle lamp, comprising the lighting device as described above.

[0025] Compared with the prior art, the embodiments of the present application have the following beneficial effects: the feedback module can determine whether the first reflection module fails based on the identified light spot. When the first reflection module fails and cannot reflect normally, the feedback module can control the second reflection module to directly reflect the light from the light source directly to the lens assembly, thereby achieving the lighting effect and eliminating the safety hazard caused by the failure of the first reflection module. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a lighting device provided in one embodiment of the present application;

[0027] Figure 2 Another structural schematic diagram of a lighting device provided by an embodiment of the present application;

[0028] Figure 3 A schematic diagram of the structure of a second reflection module provided in one embodiment of the present application;

[0029] Figure 4 Another structural schematic diagram of a second reflection module provided in one embodiment of the present application;

[0030] Figure 5 Another structural schematic diagram of a lighting device provided by an embodiment of the present application;

[0031] Figure 6 A schematic diagram of the structure of a vehicle lamp provided in one embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] Figure 1 A schematic diagram of the structure of an illumination device provided by an embodiment of the present application is shown. For the sake of convenience, only the parts related to the present embodiment are shown, which are described in detail as follows:

[0037] A lighting device includes: a light source 100 , a first reflection module 200 , a lens assembly 300 , a feedback module 400 and a second reflection module 500 .

[0038] The light source 100 can generate light for illumination. In some embodiments, the light source 100 includes an LED light emitting device.

[0039] The first reflection module 200 can be used to reflect a display image based on the light emitted by the light source 100. The display image can be set and adjusted according to actual needs.

[0040] The lens assembly 300 is disposed on the outgoing light path of the first reflection module 200 , and the lens assembly 300 is used to adjust the displayed image.

[0041] Exemplarily, the lens assembly 300 can adjust parameters such as brightness, color, and projection distance of the displayed image.

[0042] The feedback module 400 is used to identify the light spot 10 formed by the display image, and when the image of the light spot 10 meets the fault determination condition, control the second reflection module 500 to reflect the light provided by the light source 100 to the lens assembly 300 .

[0043] Possible faults of the first reflection module 200 include: reflection failure, failure to change the pattern of the displayed image according to the control signal, failure to change the reflection angle according to the control signal, etc. These will cause the light spot 10 formed by the displayed image to fail to meet the fault judgment condition.

[0044] It can be understood that the fault determination condition corresponds to the display image reflected by the first reflection module 200 when it works normally.

[0045] Exemplarily, the feedback module 400 may compare the image of the light spot 10 with the image of the target light spot that should be generated, and determine whether the first reflection module 200 is faulty based on the similarity between the image of the light spot 10 and the image of the target light spot that should be generated.

[0046] The feedback module 400 of this embodiment can determine whether the first reflection module 200 fails based on the identified light spot 10. When the first reflection module 200 fails and cannot reflect normally, the feedback module 400 can control the second reflection module 500 to directly reflect the light of the light source 100 directly to the lens assembly 300, thereby achieving the lighting effect and eliminating the safety hazard caused by the failure of the first reflection module 200.

[0047] In some embodiments, the fault determination conditions include determination conditions such as pattern completeness, brightness, and size of the image of the light spot 10 .

[0048] It is understandable that the light spot 10 formed by the displayed image will be affected by the actual environment, such as the flatness of the road surface, the color of the road surface, the color of the surrounding light, and obstacles at the projection position, resulting in a gap between the image of the actual light spot 10 and the image of the target light spot. Therefore, the fault judgment conditions can be appropriately relaxed according to actual needs.

[0049] In some embodiments, the lens assembly 300 includes a plurality of filter lenses, polarizing lenses and other lenses, and the lens assembly 300 can be specifically configured according to actual needs.

[0050] In one embodiment, if Figure 2 As shown, the second reflection module 500 includes a reflection unit 510 and a power unit 520 .

[0051] The reflection unit 510 is connected to the power unit 520 , and the reflection unit 510 is used to reflect light.

[0052] The power unit 520 is connected to the feedback module 400 , and is used to control the reflection unit 510 to be inserted into or leave between the light source 100 and the first reflection module 200 .

[0053] When the first reflection module 200 fails to work properly, in order to prevent the lighting device from losing its lighting effect, the light emitted by the light source 100 is directly reflected to the lens assembly 300 through the reflection unit 510, so as to achieve the most basic lighting effect.

[0054] The power unit 520 is used to adjust the position of the reflection unit 510. When the reflection unit 510 is not needed, the power unit 520 can store the reflection unit 510 aside. When the reflection unit 510 is needed, the position of the reflection unit 510 can be adjusted to achieve the purpose of replacing the first reflection module 200 for reflection.

[0055] In one embodiment, the reflection unit 510 includes a total reflection lens.

[0056] The total reflection lens can reflect the light emitted by the light source 100 to the lens assembly 300 without attenuation, thereby achieving a lighting effect through the lens assembly 300 and improving safety.

[0057] In one embodiment, if Figure 3 As shown, the power unit 520 includes a rack 521 , a transmission structure 522 and a power source 523 .

[0058] The reflection unit 510 is connected to the rack 521, and the transmission structure 522 is respectively engaged with the rack 521 and the output end of the power source 523. The power source 523 is used to drive the rack 521 to move through the transmission structure 522 to control the reflection unit 510 to insert or leave between the light source 100 and the first reflection module 200.

[0059] In some embodiments, the transmission structure 522 includes a plurality of gears meshing with each other, at least one gear meshes with the output end of the power source 523, and at least one gear meshes with the rack 521. The power source 523 may be a driving motor.

[0060] It is understandable that the power source 523 can drive each gear to rotate, and the rack 521 can reciprocate along the axis of the rack 521 driven by the rotation of the gears, thereby driving the reflection unit 510 to reciprocate along the axis of the rack 521.

[0061] When the first reflection module 200 works normally, the reflection unit 510 is fixed aside by the power unit 520. When the first reflection module 200 works abnormally, the reflection unit 510 originally located aside can be displaced to the reflection surface of the first reflection module 200 to reflect the light of the light source 100 instead of the first reflection module 200, thereby solving the potential safety hazard caused by the abnormal operation of the first reflection module 200.

[0062] In one embodiment, if Figure 4 As shown, the reflection unit 510 is provided with a notch 511, and the power unit 520 includes a power source 523;

[0063] The reflection unit 510 is fixed to the output end of the power source 523;

[0064] The power source 523 is used to drive the reflection unit 510 to rotate, so as to control the non-notch portion of the reflection unit 510 to be inserted into or leave between the light source 100 and the first reflection module 200 .

[0065] It can be understood that when the first reflection module 200 works normally, the notch 511 is inserted between the light source 100 and the first reflection module 200, and the non-notch portion leaves the light source 100 and the first reflection module 200. Both the light provided by the light source 100 to the first reflection module 200 and the display image emitted by the first reflection module 200 can pass through the notch 511, and the reflection unit 510 will not affect the normal operation of the first reflection module 200. When the first reflection module 200 works abnormally, the power source 523 can drive the reflection unit 510 to rotate, so that the notch 511 leaves the light source 100 and the first reflection module 200, and the non-notch portion is inserted between the light source 100 and the first reflection module 200. At this time, the reflection unit 510 replaces the first reflection module 200 to reflect the light of the light source 100, thereby solving the safety hazard caused by the abnormal operation of the first reflection module 200.

[0066] The size and shape of the notch 511 can be set according to actual conditions.

[0067] In some embodiments, the reflective unit 510 is in the shape of a disk, the center of the reflective unit 510 is fixed at the output end of the power source 523 , and the output end of the power source 523 is perpendicular to the reflective unit 510 .

[0068] In one embodiment, the reflection unit 510 includes a first DMD chip, and the first DMD chip is used to perform total reflection on light.

[0069] It should be noted that the reflective surface of the first DMD chip is provided with a plurality of micro-mirrors. In some embodiments, by setting each micro-mirror, the first DMD chip can fully reflect the light provided by the light source 100 to the first reflective module 200 .

[0070] In one embodiment, the first reflection module 200 includes a second DMD chip, and the second DMD chip is used to reflect and display an image based on the received light.

[0071] It should be noted that the reflection surface of the second DMD chip is provided with a plurality of micro-mirrors, and the specific pattern of the displayed image can be controlled by adjusting the reflection angle of each micro-mirror.

[0072] In some embodiments, the first reflection module 200 further includes a reflection control unit 420, which is connected to the second DMD chip and is used to control the specific pattern of the display image reflected by the second DMD chip. The control unit 420 includes a microcontroller such as a chip or a single-chip microcomputer.

[0073] In one embodiment, the first reflection module 200 includes a LCOS (Liquid Crystal on Silicon) chip, and the LCOS chip is used to reflect and display images based on received light.

[0074] It should be noted that the specific pattern of the displayed image can be set by controlling the liquid crystal layer of the reflective surface of the LCOS chip.

[0075] In one embodiment, if Figure 5 As shown, the feedback module 400 includes a photosensitive unit 410 and a control unit 420 . The photosensitive unit 410 is used to obtain an image of the light spot 10 . The control unit 420 is connected to the photosensitive unit 410 . The control unit 420 is used to control the second reflection module 500 based on the image of the light spot 10 .

[0076] After the image of the light spot 10 is collected by the photosensitive unit 410 , the control unit 420 may compare the collected image of the light spot 10 with the image of the target light spot to determine whether the image of the light spot 10 meets the fault determination condition.

[0077] In some embodiments, the light sensing unit 410 includes a camera.

[0078] Figure 6 A schematic diagram of the structure of a vehicle lamp provided by an embodiment of the present application is shown. For the sake of convenience, only the parts related to the present embodiment are shown, which are described in detail as follows:

[0079] The vehicle lamp 30 includes the lighting device 20 according to any one of the above-mentioned embodiments.

[0080] The vehicle lamp 30 can be applied to vehicles such as automobiles and electric vehicles.

[0081] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0082] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0083] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A lighting device, characterized in that: include: light source; A first reflection module, used for reflecting a display image based on the light emitted by the light source; A lens assembly, arranged on the outgoing light path of the first reflection module, and the lens assembly is used to adjust the displayed image; A feedback module and a second reflection module, wherein the feedback module is used to identify the light spot formed by the display image, and when the image of the light spot meets the fault judgment condition, control the second reflection module to reflect the light provided by the light source to the lens assembly.

2. The lighting device according to claim 1, characterized in that The second reflection module includes a reflection unit and a power unit; The reflection unit is connected to the power unit, and the reflection unit is used to reflect the light; The power unit is connected to the feedback module, and is used to control the reflection unit to be inserted into or leave between the light source and the first reflection module.

3. The lighting device according to claim 2, characterized in that The reflection unit includes a total reflection lens.

4. The lighting device according to claim 3, characterized in that The power unit includes a rack, a transmission structure and a power source; The reflection unit is connected to the rack, and the transmission structure is respectively engaged with the rack and the output end of the power source. The power source is used to drive the rack to move through the transmission structure to control the reflection unit to insert or leave between the light source and the first reflection module.

5. The lighting device according to claim 3, characterized in that The reflection unit is provided with a notch, and the power unit comprises a power source; The reflection unit is fixed to the output end of the power source; The power source is used to drive the reflection unit to rotate, so as to control the non-notch portion of the reflection unit to be inserted into or leave between the light source and the first reflection module.

6. The lighting device according to any one of claims 3 to 5, characterized in that: The reflection unit includes a first DMD chip, and the first DMD chip is used for totally reflecting the light.

7. The lighting device according to any one of claims 1 to 5, characterized in that: The first reflection module includes a second DMD chip, and the second DMD chip is used to reflect the display image based on the received light.

8. The lighting device according to any one of claims 1 to 5, characterized in that: The first reflection module includes an LCOS chip, and the LCOS chip is used to reflect the display image based on the received light.

9. The lighting device according to any one of claims 1 to 5, characterized in that: The feedback module includes a photosensitive unit and a control unit, the photosensitive unit is used to obtain the image of the light spot, the control unit is connected to the photosensitive unit, and the control unit is used to control the second reflection module when the image of the light spot meets the fault judgment condition.

10. A vehicle lamp, characterized in that: Comprising the lighting device according to any one of claims 1 to 9.

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