Color wheel module, projection device, vehicle lamp, control system and vehicle
By designing a color wheel module and utilizing the cooperation of cam components and moving parts, flexible adjustment of light color is achieved, solving the problem that a single color beam cannot adapt to different scenarios, thus improving the visual experience and vehicle safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YINWANG INTELLIGENT TECHNOLOGIES CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-05-19
AI Technical Summary
The lighting fixtures or projection structures on existing vehicles use beams of a single color, which cannot be adjusted according to the usage scenario, limiting the plasticity of the spatial atmosphere and failing to provide a rich visual experience.
By employing a color wheel module and cooperating with cam components and moving parts, the light-transmitting area of the color wheel can be changed, enabling flexible adjustment of the light color. Combined with the design of slide rails and elastic components, the stability and accuracy of movement are ensured.
It enables flexible adjustment of light color, enhances the user's visual experience, and improves vehicle safety and visibility in different scenarios, especially improving the penetration of headlights and driving safety in rainy and foggy weather.
Smart Images
Figure CN224261484U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of optical display technology, specifically to a color wheel module, a projection device, vehicle lights, a control system, and a vehicle. Background Technology
[0002] Currently, some vehicles, such as lighting devices or projection structures, typically use a single-color beam of light for illumination or to project images. This single-color beam cannot be adjusted according to the usage scenario, severely limiting the flexibility of spatial atmosphere in contextualized applications and failing to provide users with a richer visual experience. Utility Model Content
[0003] Embodiments of this application provide a color wheel module, a projection device, a vehicle light, a control system, and a vehicle, which can flexibly adjust the color of the color blocks in the color wheel module, thereby changing the color of the light beam to adapt to the usage requirements of different scenarios.
[0004] In a first aspect, this application provides a color wheel module, including a cam assembly, a movable component, and a color wheel. The cam assembly includes a base, a first rotating shaft, and a cam. The first rotating shaft is rotatably connected to the base, and the cam is sleeved on the first rotating shaft. The circumferential surface of the cam includes a first abutment position and a second abutment position. The distance between the first abutment position and the axis of the first rotating shaft is a first distance, and the distance between the second abutment position and the axis of the first rotating shaft is a second distance. The first distance is greater than the second distance. The movable component includes a supporting portion and a mounting portion connected together. The mounting portion is slidably connected to the base, and the supporting portion abuts against the circumferential surface of the cam. The supporting portion is located on the side of the cam facing a first direction, which is the radial direction of the first rotating shaft. The color wheel includes a connecting area, a first light-transmitting area, and a second light-transmitting area. The first light-transmitting area and the second light-transmitting area have different light-transmitting colors. The connecting area, the first light-transmitting area, and the second light-transmitting area are arranged along the first direction. The connecting area of the color wheel is connected to the mounting portion. The rotation of the first rotating shaft can drive the cam to rotate, thereby changing the contact position between the cam and the supporting part. When the first abutting position contacts the supporting part, the first light-transmitting area is used for light to pass through. When the second abutting position contacts the supporting part, the second light-transmitting area is used for light to pass through.
[0005] In this embodiment, during rotation, the cam's circumferential surface abuts against the abutment portion of the moving part. When the contact position between the cam and the abutment portion changes from the first abutment position to the second abutment position, the abutment portion gradually moves away from the first rotating shaft, at which point the color wheel moves along the first direction. The area of the color wheel through which light passes can change from the first light-transmitting area to the second light-transmitting area. When a light source emits light onto the color wheel, the color of the light changes as it passes through the color wheel module. For example, changing the light transmission position of the color wheel will change the luminous flux of each color channel on the color wheel, thereby affecting color purity and saturation. During use, the color wheel module can adjust the color according to the user's visual style preferences to improve the user's visual experience. The change in projected color can also guide the user's attention, thereby enhancing the projected information.
[0006] When the color wheel module is applied to vehicle headlights, the color and color saturation can be adjusted in real time by adjusting the light transmission position of the color wheel, so as to make the headlights more penetrating in rainy and foggy weather and improve the driving safety of the vehicle.
[0007] By adjusting the position of the light transmission on the color wheel, the brightness of the light passing through it can also be adjusted. For example, when the color wheel module is applied to vehicle headlights, the vehicle can reduce brightness by adjusting the position of the color wheel to avoid glare for oncoming vehicles or pedestrians when sensors detect a vehicle or pedestrian ahead, thus preventing glare. In rainy or foggy weather, the brightness can be reduced to decrease light reflection and increase the headlight's penetrating power, allowing it to be seen from a greater distance and improving driving safety.
[0008] In one possible implementation, the base is provided with a slide rail that extends along a first direction, and the mounting part is slidably connected to the slide rail.
[0009] In this embodiment, a slide rail connects the base and the mounting part, allowing the mounting part to slide along the slide rail. The slide rail integrates the base and mounting part into a dynamic whole, reducing the risk of swaying or offset when the mounting part moves independently. The direction of movement of the mounting part can be limited by the slide rail, allowing the relative position of the mounting part and the base to change smoothly in a first direction. The guiding effect of the slide rail restricts the direction of movement of the bracket, eliminating sway errors when the base and mounting part move independently.
[0010] In one possible implementation, the color wheel module further includes an elastic element that extends along a first direction. One end of the elastic element is connected to the base, and the other end is connected to the mounting base. When the abutting portion abuts against the first abutting position of the cam, the elastic element is in a compressed state.
[0011] In this embodiment, when the mounting part needs to move towards the first rotating shaft so that the light-transmitting position of the color wheel changes from the first light-transmitting position to the second light-transmitting position, the cam rotates, the first abutting position moves away from the supporting part, and the elastic force of the elastic member can push the mounting part towards the first rotating shaft. When the second abutting position contacts the supporting part, the second light-transmitting area of the cam can be located at a position where the light from the light source can pass through.
[0012] The elastic element can prevent the supporting part from separating from the outer peripheral surface of the cam when the cam rotates, thus preventing the moving part from moving in sync with the outer peripheral surface of the cam.
[0013] In one possible implementation, when the abutting part abuts against the second abutting position of the cam, the elastic element is in a compressed state.
[0014] In this embodiment, the elastic force of the elastic element can push the entire movable member towards the first rotating shaft, so that the supporting part of the movable member can reach the second abutting position of the cam. When the second abutting position of the cam contacts the supporting part, the position of the second light-transmitting area of the color wheel can be located on the propagation path of the light source.
[0015] In one possible implementation, the color wheel module further includes a rotating component, which includes a fixed part and a second rotating shaft. The fixed part is fixedly connected to the mounting part, one end of the second rotating shaft is rotatably connected to the fixed part, and the other end of the second rotating shaft is fixedly connected to the connection area of the color wheel. The second rotating shaft is used to rotate relative to the fixed part to drive the cam to rotate.
[0016] In this embodiment, the rotating component drives the color wheel to rotate. During the rotation of the color wheel, the first and second light-transmitting areas can rotate around the fixed area. When the supporting part contacts the first contact position of the cam, the annular range in which the first light-transmitting area rotates is the area where light from the light source is transmitted. The annular range in which the first light-transmitting area is located can have light-transmitting areas of various colors. The rotation of the color wheel allows light-transmitting areas of different colors to continuously pass through the light path, so that the color of the light passing through the annular area continuously changes. When the human eye observes a rapidly flashing or moving image, the photoreceptors on the retina temporarily retain traces of the image, causing multiple images to merge into a continuous dynamic image in the brain, which is the visual persistence effect.
[0017] By changing the color of different areas on the color wheel, or the area of different colored areas, the light passing through the color wheel can appear in different colors and brightness.
[0018] In one possible implementation, the color wheel includes a third light-transmitting area, which is arranged around the periphery of the connecting portion with the first light-transmitting area, and the light-transmitting color of the third light-transmitting area is different from the light-transmitting color of the first light-transmitting area.
[0019] In one possible implementation, the color wheel includes a fourth light-transmitting area and a second light-transmitting area, located on the outer periphery of the first and second light-transmitting areas, with the fourth light-transmitting area and the second light-transmitting area having different light-transmitting colors.
[0020] In one possible implementation, the supporting part includes a connecting shaft and a transmission wheel. The connecting shaft is connected to the moving part, and the axial direction of the connecting shaft is the same as the axial direction of the first rotating shaft. The transmission wheel is sleeved on the connecting shaft and can rotate relative to the connecting shaft.
[0021] In this embodiment, rolling friction can exist between the transmission wheel and the cam. This reduces the resistance generated by the contact surface between the cam's circumferential surface and the supporting portion, allowing the cam to rotate more smoothly.
[0022] In one possible implementation, the mounting part is provided with a guide hole that penetrates the mounting part along a first direction and is sleeved on the outer periphery of the slide rail.
[0023] In this embodiment, the wall of the guide hole can be circumferentially aligned with the slide rail, preventing the mounting part from moving relative to the base in any radial direction of the slide rail. This ensures that the mounting part moves only in the axial direction of the slide rail, making the position change of the color wheel more controllable. Consequently, the color and brightness of the projected pattern formed by the light passing through the color wheel are more controllable.
[0024] In one possible implementation, there are two guide holes, which are spaced apart along the axial direction of the first rotating shaft, and there are two slide rails, with one slide rail passing through one guide hole.
[0025] In this embodiment, the dual slide rail configuration creates symmetrical constraints, effectively resisting off-center loading and making the sliding direction of the mounting part more stable. Compared to the single slide rail design, the dual slide rail evenly distributes the load to the two slide rails, reducing the force on each slide rail by 50%, lowering the wear rate, and thus extending the service life of the slide rails, which in turn extends the service life of the color wheel module.
[0026] In one possible implementation, the mounting part is further provided with an elastic element receiving groove, which is located between two guide holes. At least a portion of the elastic element is located in the elastic element receiving groove, and one end of the elastic element is connected to the groove wall of the elastic element receiving groove.
[0027] In this embodiment, the elastic force of the elastic element is in the same direction as the extension direction of the slide rail. When the elastic element applies elastic force to the mounting part, the elastic force and the slide rail can jointly constrain the movement direction of the mounting part, so as to make the sliding process of the mounting part more stable.
[0028] In one possible implementation, the color wheel module further includes a first detection structure, which is connected to the base. One end of a first rotating shaft is positioned opposite to the first detection structure, and the first detection structure is capable of identifying the rotation angle of the first rotating shaft.
[0029] In this embodiment, the first detection structure can identify the contact area between the cam and the abutment by recognizing the rotation angle of the first rotating shaft. For example, when the first rotating shaft is not rotating, the first abutment area of the cam is in contact with the abutment, and at this time, the first light-transmitting area of the color wheel can be located within the propagation path of the light from the light source. When the rotation angle of the first rotating shaft is identified as a predetermined angle, it is confirmed that the second abutment area of the cam is in contact with the abutment, and at this time, the second light-transmitting area of the color wheel can be located within the propagation path of the light from the light source. When the rotation angle of the first rotating shaft is identified as one full turn or approximately one full turn, it is confirmed that the first abutment area of the cam is in contact with the abutment, and at this time, the first light-transmitting area of the color wheel can be located within the propagation path of the light from the light source.
[0030] In one possible implementation, the color wheel module further includes a magnetic component connected to the end face of the first rotating shaft facing the first detection structure. Rotation of the first rotating shaft can drive the magnetic component to rotate, and the first detection structure can identify the rotation angle of the first rotating shaft by identifying the rotation angle of the magnetic component.
[0031] The first detection structure can be a magnetic encoder.
[0032] In this embodiment, when the magnetic component rotates with the first shaft, the magnetic field of the magnetic component changes. The first detection structure can identify the change in magnetic field and convert it into an electrical signal, which is then sent to an external controller to identify the rotation angle of the first shaft.
[0033] Secondly, this application also provides a projection device, including a light source and a color wheel module as described in any of the preceding claims. The light source is used to emit light to the color wheel module. When the first abutting position of the cam contacts the abutting part, the light from the light source can pass through the first light-transmitting area. When the second abutting position of the cam contacts the abutting part, the light from the light source can pass through the second light-transmitting area.
[0034] Thirdly, this application also provides a vehicle lamp, including a lamp housing and a projection device as described above, wherein the lamp housing has a receiving space and the projection device is installed in the receiving space.
[0035] Fourthly, this application also provides a control system, including a controller and a projection device as described above, wherein the controller is capable of adjusting the rotation angle of the first rotating shaft of the projection device to control the contact position between the cam and the abutment portion.
[0036] Fifthly, this application also provides a means of transportation, characterized in that it includes a vehicle body and a projection device as described above, the projection device being connected to the vehicle body. Attached Figure Description
[0037] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0038] Figure 1 This is a schematic diagram of the structure of the vehicle provided in the embodiments of this application;
[0039] Figure 2 yes Figure 1 A schematic diagram of the projection device of the vehicle shown;
[0040] Figure 3 yes Figure 2 The diagram shows the structure of the cam assembly.
[0041] Figure 4 yes Figure 3 An exploded view of the cam assembly shown.
[0042] Figure 5 yes Figure 4 The diagram shows the structural assembly of the base, slide rail, and elastic element.
[0043] Figure 6 yes Figure 4 The diagram shows the structure of the cam.
[0044] Figure 7 yes Figure 6 The graph shown shows the relationship between the rotation angle of the cam and the moving distance of the moving part.
[0045] Figure 8 yes Figure 4 The diagram shows the structure of the moving part;
[0046] Figure 9 yes Figure 4 The diagram shows the structural arrangement of the cam assembly and the moving part.
[0047] Figure 10 yes Figure 2 The diagram shows the structure of the color wheel;
[0048] Figure 11 yes Figure 2 The diagram shows the structure of the rotating component.
[0049] Figure 12 yes Figure 3 A partial cross-sectional schematic diagram of the cam assembly is shown. Detailed Implementation
[0050] The specific embodiments of this application will now be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in other ways different from those described herein, and therefore, this application is not limited to these embodiments.
[0051] For ease of understanding, the terminology used in the embodiments of this application will be explained first.
[0052] Multiple: refers to two or more.
[0053] Connection: should be interpreted broadly. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through an intermediary.
[0054] The specific embodiments of this application will now be clearly described in conjunction with the accompanying drawings.
[0055] Please see Figure 1 , Figure 1 This application provides a vehicle 1000. It can flexibly adjust the color of the color blocks in the color wheel module, thereby changing the color of the light beam to adapt to the usage requirements of different scenarios.
[0056] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the vehicle 1000 provided in the embodiments of this application. Figure 1 The Y direction shown is the width direction of vehicle 1000, and the Y direction is the direction in which vehicle 1000 faces to the left. Figure 1 The X direction shown is the length direction of vehicle 1000, and the X direction is the direction in which vehicle 1000 faces forward. Figure 1 The Z-direction shown represents the height direction of vehicle 1000, and is the direction in which vehicle 1000 faces upwards. For ease of description, the X-direction is defined as the first direction, the Y-direction as the second direction, and the Z-direction as the third direction.
[0057] In this application, the vehicle 1000 can be a known vehicle such as a car, airplane, ship, or rocket, or a new type of vehicle that may emerge in the future. The car can be an electric vehicle, a gasoline-powered vehicle, or a hybrid vehicle, such as a pure electric vehicle, a range-extended electric vehicle, a hybrid electric vehicle, a fuel cell vehicle, or a new energy vehicle; this application does not specifically limit this. The following description uses a vehicle 1000 as an example.
[0058] The vehicle 1000 includes a projection device 100, a controller 200, and a vehicle body 300. The projection device 100 and the controller 200 are mounted on the vehicle body 300. The controller 200 can be electrically connected to the projection device 100. The controller 200 can control the projection device 100 to adjust the color of the light emitted by the light source.
[0059] The controller 200 can communicate with the computer system in the vehicle 1000 via the vehicle's bus to receive various information or control signals, and then send information to the projection device 100 to control the projection device 100 to adjust the direction of light propagation to achieve the desired lighting effect. It should be noted that, with technological advancements, the controller 200's functions may be integrated into the vehicle's computer system, allowing the computer system to directly control the projection device 100 to change the direction of light propagation. For example, the controller 200 could be integrated into the cockpit domain controller 200. This application does not limit the specific operating method of the controller 200.
[0060] Among them, such as Figure 1 As shown, the projection device 100 and the controller 200 can be parts of the headlights of the vehicle 1000. The headlights may include light-emitting structures such as the projection device 100, low beam headlights, and high beam headlights.
[0061] It should be noted that, in addition to being used as a headlight module within a vehicle headlight, the projection device 100 can also be any device capable of illuminating or projecting images. The light projected by the projection device 100 can be monochromatic light, colored light, or image light capable of displaying patterns, etc. This application does not limit the type of light emitted by the projection device 100.
[0062] The vehicle headlight can be an external or internal light fixture on the vehicle. For example, the headlight may also include a housing (not shown). The housing may cover the projection device 100. The headlight may also integrate sensing modules, such as lidar, millimeter-wave radar, or infrared detection devices, to form an integrated sensing headlight.
[0063] In this embodiment, the lidar is combined with the intelligent driving system of the vehicle 1000. The lidar can monitor the surrounding environment in real time and provide the vehicle 1000 with timely obstacle avoidance and braking information, thereby improving driving safety.
[0064] Millimeter-wave radar measures the distance to a target by emitting electromagnetic waves and receiving the reflected echoes. Millimeter-wave radar can be used for blind spot monitoring, lane change assist at low speeds, emergency braking, adaptive cruise control, and other functions.
[0065] Infrared detection devices utilize electromagnetic radiation with longer wavelengths and lower frequencies for communication and detection. Infrared technology can be used to detect the airtightness of vehicle lights, ensuring the quality and performance of the lights by detecting gas leaks between the lamp cover and the bulb.
[0066] External lighting can include headlights or welcome lights. Headlights, also known as headlamps, are installed on both sides of the front of the vehicle for illuminating the road at night. Headlights include low beams and high beams. Low beams illuminate the road ahead without glare or causing discomfort to oncoming vehicles or other road users. High beams illuminate the road ahead further ahead. Welcome lights are mainly installed at the bottom of the doors or below the side mirrors. They automatically illuminate the area around the door when the door is opened or the driver approaches the vehicle, providing lighting for passengers getting in and out.
[0067] Interior lighting fixtures can include dome lights and ambient lights. Dome lights are used for illumination inside the vehicle at night or in dimly lit conditions. Ambient lights can be installed on the vehicle's interior and are non-illuminating lights used to create a specific ambiance. In some other applications, ambient lights can also be installed on the exterior of the vehicle.
[0068] The following description and illustrations will use vehicle headlights as an example. However, it should be noted that the vehicle headlights in this application can be any type of vehicle headlight used on the vehicle 1000, and are not limited to headlights.
[0069] Currently, some vehicles, such as car lights, typically use a single-color beam of light for illumination or to project images. This single-color beam cannot be adjusted according to the usage scenario, severely limiting the flexibility of spatial atmosphere in contextualized applications and failing to provide users with a richer visual experience.
[0070] Please see Figure 2 , Figure 2 yes Figure 1 The diagram shows the structure of the projection device 100 of the vehicle 1000. The projection device 100 provided in this embodiment includes a color wheel module 10 and a light source 20. The light source 20 emits light to the color wheel module 10. The color wheel module 10 changes the position through which the light passes, thereby changing the color of the light.
[0071] It should be noted that, Figure 2The purpose of this illustration is merely to depict the connection relationship between the light source 20 and the color wheel module 10, and it is not intended to specifically limit the connection positions, specific structures, or quantities of the various devices. Furthermore, the structures illustrated in the embodiments of this application do not constitute a specific limitation on the projection device 100. In other embodiments of this application, the projection device 100 may include more or fewer components than illustrated, or combine certain components, or split certain components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of both.
[0072] The light source 20 is connected to the vehicle body 300. The light source 20 is used to emit light to the color wheel module 10. Figure 2 As shown, the light from the light source 20 propagates in the X direction. In some other embodiments, the light source 20 may also be located on the side of the color wheel module 10 facing the X direction, and the light from the light source 20 may also propagate in the opposite direction to the X direction. The light source 20 can be a digital light processing projector (DLP), a liquid crystal on silicon (LCoS), a thin film transistor liquid crystal display (TFT-LCD), a micro light-emitting diode (Micro-LED), a silicon-based OLED (Micro-OLED), etc.
[0073] The color wheel module 10 includes a cam assembly 11, a moving member 12, and a color wheel 13. The cam assembly 11 controls the reciprocating motion of the moving member 12. The moving member 12 is connected to the color wheel 13. The moving member 12 can drive the color wheel 13 to move, thereby changing the light transmission position of the color wheel 13, and thus changing the projected color of the light when the light passes through the light transmission position of the color wheel 13.
[0074] Please refer to the following: Figure 3 and Figure 4 , Figure 3 yes Figure 2 The diagram shows the structure of the cam assembly 11. Figure 4 yes Figure 3 The diagram shows an exploded view of the cam assembly 11. The cam assembly 11 may include a base 111, a first motor 112, a first rotating shaft 113, a cam 114, a slide rail 115, and an elastic element 116. The first motor 112 is connected to the base 111. The first motor 112 is connected to the first rotating shaft 113, and the first motor 112 can drive the first rotating shaft 113 to rotate. The cam 114 is sleeved on the first rotating shaft 113, and the cam 114 can rotate as the first rotating shaft 113 rotates.
[0075] Specifically, please refer to the following: Figure 4 and Figure 5 , Figure 5 yes Figure 4 The diagram shows the assembly of the base 111 with the slide rail 115 and the elastic element 116. The base 111 includes a first part 1111 and a second part 1112. The first part 1111 is connected to the second part 1112. The first part 1111 provides mounting space for the first motor 112, the first rotating shaft 113, and the cam 114. The second part 1112 provides mounting space for the moving part 12.
[0076] The first part 1111 includes a first end face 1111a and a second end face 1111b that are opposite to each other along the Z direction, and a side face 1111c that faces the opposite direction to the X direction. The side face 1111c is connected between the first end face 1111a and the second end face 1111b.
[0077] The first part 1111 is provided with a first receiving groove 1113, a motor mounting hole 1114, and a shaft mounting hole 1115. The first receiving groove 1113 provides a mounting position for the moving part 12 and the cam 114. The motor mounting hole 1114 provides a mounting position for the first motor 112. The shaft mounting hole 1115 provides a mounting position for the first shaft 113.
[0078] The first receiving groove 1113 extends through the side surface 1111c along the X direction. The first receiving groove 1113 includes a first groove wall and a second groove wall that are opposite each other along the Z direction.
[0079] The motor mounting hole 1114 penetrates the first end face 1111a and the first groove wall of the first receiving groove 1113. The shaft mounting hole 1115 penetrates the second end face 1111b and the second groove wall of the first receiving groove 1113.
[0080] For example, the first part 1111 further includes a support plate 1116. The support plate 1116 is connected to the first receiving groove 1113 and is connected to the two sidewalls of the first receiving groove 1113 opposite to each other in the Y direction. The support plate 1116 extends in the X direction. The support plate 1116 has a support hole 1117. The support hole 1117 penetrates the support plate 1116 in the Z direction. The support hole 1117 is opposite to the rotating shaft mounting hole 1115.
[0081] The second part 1112 is provided with a second receiving groove 1112a. The second receiving groove 1112a extends through the second part 1112 in the X direction. The second part 1112 is connected to the first part 1111 in the X direction. The side 1111c of the first part 1111 faces away from the second part 1112. The second receiving groove 1112a communicates with the first receiving groove 1113.
[0082] The first motor 112 passes through the motor mounting hole 1114 of the first part 1111. The end of the first motor 112 facing the Z direction can be located in the support hole 1117 of the support plate 1116. The first motor 112 can be fixedly connected to the first end face 1111a of the first part 1111 by screws.
[0083] One end of the first rotating shaft 113 is connected to the first motor 112, and the other end passes through the rotating shaft mounting hole 1115 of the first part 1111. The rotating shaft extends in the Z direction. For example, the first rotating shaft 113 can be connected to the inner wall of the rotating shaft mounting hole 1115 through a bearing.
[0084] Please see Figure 6 , Figure 6 yes Figure 4 The diagram shows the structure of cam 114. Cam 114 can be an eccentric wheel. Cam 114 is sleeved on the first rotating shaft 113 and located within the first receiving groove 1113. The axial direction of cam 114 is the Z direction. Cam 114 is coaxially arranged with the first rotating shaft 113. The circumferential surface of cam 114 includes a first abutment position 1141 and a second abutment position 1142. The distance between the first abutment position 1141 and the straight line containing the first rotating shaft 113 is a first distance D1, and the distance between the second abutment position 1142 and the straight line containing the first rotating shaft 113 is a second distance D2, where the first distance D1 is greater than the second distance D2. The first abutment position 1141 can be the portion of the circumferential surface of cam 114 furthest from the first rotating shaft 113. The second abutment position 1142 can be the portion of the circumferential surface of cam 114 closest to the first rotating shaft 113.
[0085] In the circumferential surface of the cam 114, the first abutment position 1141 and the second abutment position 1142 can be located on opposite radial sides of the cam 114. (See also...) Figure 7 , Figure 7 yes Figure 6 The graph shows the relationship between the rotation angle of the cam 114 and the moving distance of the moving member 12. Any point on the first abutment position 1141 is equidistant from the centerline of the first rotating shaft 113.
[0086] In this embodiment, the first motor 112 can drive the first rotating shaft 113 to rotate relative to the first part 1111 of the base 111. The rotation of the first rotating shaft 113 can drive the cam 114 to rotate, thereby changing the position of the first abutting position 1141 relative to the first part 1111 and the position of the second abutting position 1142 relative to the first part 1111.
[0087] The distance from any point of the second abutment position 1142 to the axis of the first rotating shaft 113 is the same. This effectively reduces the dependence of the displacement of the moving member 12 on the rotation angle of the cam 114. Even if the cam 114 wobbles, as long as any surface within the range of the first abutment position 1141 / or any surface within the range of the second abutment position 1142 abuts against the moving member 12, the position of the moving member 12 can be kept still. Furthermore, since the cam 114 can rotate continuously, the first motor 112 can rotate continuously to quickly switch the light-transmitting position of the color wheel 13 without the first motor 112 driving the first rotating shaft 113 in the reverse direction, thereby improving the continuity and stability of the movement of the color wheel module 10.
[0088] Please refer to the following: Figure 4 and Figure 5 The slide rail 115 is connected to the groove wall of the second receiving groove 1112a of the second part 1112. The slide rail 115 extends along the Y direction. For example, there can be two slide rails 115, which are spaced apart along the Z direction.
[0089] One end of the elastic member 116 is connected to the groove sidewall of the second receiving groove 1112a in the opposite direction to the Y direction. Exemplarily, the elastic member 116 includes a positioning post 1161 and a spring 1162. The positioning post 1161 is connected to the groove sidewall of the second receiving groove 1112a in the opposite direction to the Y direction. The spring 1162 is sleeved on the positioning post 1161.
[0090] Please see Figure 8 , Figure 8 yes Figure 4 The diagram shows the structure of the movable member 12. The movable member 12 includes a supporting part 121 and a mounting part 122 connected to each other. The supporting part 121 is used to support the circumferential surface of the cam 114. The mounting part 122 is used to slide in connection with the base 111 of the cam assembly 11.
[0091] The mounting portion 122 is provided with a guide hole 1221 and an elastic element receiving groove 1222. The guide hole 1221 extends through the mounting portion 122 along the Y direction. For example, there are two guide holes 1221, which are spaced apart along the Z direction.
[0092] The elastic element receiving groove 1222 is recessed from the surface of the mounting portion 122 in the opposite direction to the Y direction, and extends through the surface of the mounting portion 122 in the opposite direction to the X direction. The elastic element receiving groove 1222 is located between the two guide holes 1221.
[0093] The supporting part 121 includes a connecting shaft 1211 and a transmission wheel 1212. The connecting shaft 1211 is connected to the wall of the elastic member receiving groove 1222. The connecting shaft 1211 extends along the Z direction. The axial direction of the connecting shaft 1211 is the same as the axial direction of the first rotating shaft 113. The transmission wheel 1212 is sleeved on the connecting shaft 1211 and can rotate relative to the connecting shaft 1211.
[0094] The abutting portion 121 of the moving member 12 abuts against the circumferential surface of the cam 114. The transmission wheel 1212 of the abutting portion 121 abuts against the circumferential surface of the cam 114. This allows the transmission wheel 1212 to rotate in opposite directions to the cam 114 when the cam 114 rotates, resulting in rolling friction between the cam 114 and the transmission wheel 1212.
[0095] In this embodiment, there may be rolling friction between the transmission wheel 1212 and the cam 114. This reduces the resistance generated by the contact surface between the circumferential surface of the cam 114 and the supporting portion 121, allowing the cam 114 to rotate more smoothly.
[0096] Please refer to the following: Figures 5-9 , Figure 9 yes Figure 4 The diagram shows a structural schematic of the cam assembly 11 and the moving member 12 assembled together. At least a portion of the mounting portion 122 of the moving member 12 is located within the first receiving groove 1113 and the second receiving groove 1112a. The mounting portion 122 and the guide hole 1221 are located within the second receiving groove 1112a of the second portion 1112 of the base 111. The guide hole 1221 is fitted around the outer periphery of the slide rail 115.
[0097] In this embodiment, the wall of the guide hole 1221 can be circumferentially phased with the slide rail 115, preventing the mounting part 122 from moving relative to the base 111 in any radial direction of the slide rail 115. This ensures that the mounting part 122 moves only in the axial direction of the slide rail 115, thereby making the position change of the color wheel 13 more controllable. Consequently, the color and brightness of the projected pattern formed by the light passing through the color wheel 13 are more controllable.
[0098] The slide rail 115 connects the base 111 to the mounting part 122, allowing the mounting part 122 to slide along the slide rail 115. The slide rail 115 integrates the base 111 and the mounting part 122 into a dynamic whole, reducing the risk of swaying or offset when the mounting part 122 moves independently. The direction of movement of the mounting part 122 can be limited by the slide rail 115, allowing the relative position of the mounting part 122 and the base 111 to change smoothly in the Y direction. The guiding effect of the slide rail 115 restricts the direction of movement of the bracket, eliminating yaw errors when the base 111 and the mounting part 122 move independently.
[0099] Furthermore, the dual slide rail configuration creates symmetrical constraints, effectively resisting off-center loading and making the sliding direction of the mounting part 122 more stable. Compared to the single slide rail design, the dual slide rail 115 evenly distributes the load to the two slide rails 115, reducing the force on each slide rail 115 by 50%, lowering the wear rate, and thus extending the service life of the slide rail 115, thereby extending the service life of the color wheel module 10.
[0100] One end of the elastic member 116 is connected to the second part 1112 of the base 111, and the other end of the elastic member 116 abuts against the groove wall of the elastic member receiving groove 1222 facing the Y direction.
[0101] In this embodiment, the elastic force direction of the elastic member 116 is the same as the extension direction of the slide rail 115. When the elastic member 116 applies elastic force to the mounting part 122, the elastic force and the slide rail 115 can jointly constrain the movement direction of the mounting part 122, so that the sliding process of the mounting part 122 is more stable.
[0102] Please see Figure 10 , Figure 10 yes Figure 2 The diagram shows the structure of the color wheel 13. The color wheel 13 may include a connecting area 131, a first color ring 132, and a second color ring 133. The first color ring 132 has multiple light-transmitting areas of different colors. The first color ring 132 is arranged around the connecting area 131. The second color ring 133 has multiple light-transmitting areas of different colors. The second color ring 133 surrounds the outer periphery of the first color ring 132.
[0103] The first color ring 132 may include a first light-transmitting area 1321, a third light-transmitting area 1322, and a fifth light-transmitting area 1323. The first light-transmitting area 1321, the third light-transmitting area 1322, and the fifth light-transmitting area 1323 are connected end-to-end. For example, the first light-transmitting area 1321, the third light-transmitting area 1322, and the fifth light-transmitting area 1323 may have different light-transmitting colors. The first light-transmitting area 1321 may be a yellow light-transmitting area. The second light-transmitting area may be a red light-transmitting area. The third light-transmitting area 1322 may be a blue light-transmitting area.
[0104] The second color ring 133 may include a second light-transmitting area 1331, a fourth light-transmitting area 1332, a sixth light-transmitting area 1333, and a seventh light-transmitting area 1334. The second light-transmitting area 1331, the fourth light-transmitting area 1332, the sixth light-transmitting area 1333, and the seventh light-transmitting area 1334 are connected end-to-end. For example, the light-transmitting colors of the second light-transmitting area 1331, the fourth light-transmitting area 1332, the sixth light-transmitting area 1333, and the seventh light-transmitting area 1334 are different. The second light-transmitting area 1331 can be a red light-transmitting area. The fourth light-transmitting area 1332 can be a blue light-transmitting area. The sixth light-transmitting area 1333 can be a yellow light-transmitting area. The seventh light-transmitting area 1334 can be a colorless light-transmitting area.
[0105] Among them, the first light-transmitting area 1321 of the first color ring 132 has a different light-transmitting color than the second light-transmitting area 1331 of the second color ring 133, and the connecting area 131, the first light-transmitting area 1321 and the second light-transmitting area 1331 are arranged along the first direction.
[0106] The connecting area 131 of the color wheel 13 is connected to the mounting part 122.
[0107] In this embodiment, during rotation, the circumferential surface of the cam 114 abuts against the abutment portion 121 of the moving member 12. When the contact position between the cam 114 and the abutment portion 121 changes from the second abutment position 1142 to the first abutment position 1141, the abutment portion 121 gradually moves away from the first rotating shaft 113, at which point the elastic member 116 is compressed. The mounting portion 122 of the moving member 12 slides along the slide rail 115 on the base 111, and the color wheel 13 moves along the Y direction. The area of the color wheel 13 through which light passes can change from the second light-transmitting area 1331 to the first light-transmitting area 1321. When the light source 20 emits light to the color wheel 13, the color of the light changes as it passes through the color wheel module 10. For example, changing the light transmission position of the color wheel 13 will change the luminous flux of each color channel on the color wheel 13, thereby affecting the color purity and saturation. During use, the color wheel module 10 can adjust the color according to the user's preference for visual style to improve the user's visual experience. The change in projected color can also guide the user's attention, thereby enhancing the projected information.
[0108] When the color wheel module 10 is applied to the headlights of the vehicle 1000, the color and color saturation can be adjusted in real time by adjusting the light transmission position of the color wheel 13, so as to make the headlights more penetrating in rainy and foggy weather and improve the driving safety of the vehicle.
[0109] The brightness of the light passing through the color wheel 13 can be adjusted by changing its position. For example, when the color wheel module 10 is applied to the headlights of a vehicle 1000, the vehicle 1000 can reduce the brightness by adjusting the position of the color wheel 13 to avoid glare for oncoming vehicles or pedestrians when it detects a vehicle or pedestrian ahead using sensors or other structures. In rainy or foggy weather, the brightness can be reduced to decrease light reflection and increase the headlight's penetrating power, allowing it to be seen from a greater distance and improving driving safety.
[0110] In one possible implementation, one end of the elastic member 116 is connected to the base 111, and the other end of the elastic member 116 is connected to the mounting base. When the supporting portion 121 abuts against the first abutting position 1141 of the cam 114, the elastic member 116 is in a compressed state. When the supporting portion 121 abuts against the second abutting position 1142 of the cam 114, the elastic member 116 is in a compressed state.
[0111] In this embodiment, when the mounting part 122 needs to move towards the first rotating shaft 113 so that the light-transmitting position of the color wheel 13 changes from the first light-transmitting position to the second light-transmitting position, the cam 114 rotates, the first abutting position 1141 moves away from the abutting part 121, and the elastic force of the elastic member 116 can push the mounting part 122 towards the first rotating shaft 113. When the second abutting position 1142 contacts the abutting part 121, the second light-transmitting area of the cam 114 can be located at a position where the light from the light source 20 can pass through.
[0112] The elastic element 116 can prevent the supporting part 121 from separating from the outer peripheral surface of the cam 114 when the cam 114 rotates, thus preventing the moving part 12 from moving in tandem with the outer peripheral surface of the cam 114.
[0113] The elastic force of the elastic member 116 can push the entire movable member 12 towards the first rotating shaft 113, so that the supporting part 121 of the movable member 12 can reach the second abutting position 1142 of the cam 114. When the second abutting position 1142 of the cam 114 contacts the supporting part 121, the position of the second light-transmitting area of the color wheel 13 can be located on the propagation path of the light from the light source 20.
[0114] For one possible implementation, please refer to Figure 11 , Figure 11 yes Figure 2 The diagram shows the structure of the rotating component 14. The color wheel module 10 also includes the rotating component 14. The rotating component 14 can be connected between the moving component 12 and the color wheel 13. That is, the moving component 12 and the color wheel 13 are connected through the rotating component 14.
[0115] The rotating component 14 includes a fixed part 141 and a second rotating shaft 142. The fixed part 141 is fixedly connected to the mounting part 122. One end of the second rotating shaft 142 is rotatably connected to the fixed part 141, and the other end of the second rotating shaft 142 is fixedly connected to the connection area 131 of the color wheel 13. The second rotating shaft 142 is used to rotate relative to the fixed part 141 to drive the cam 114 to rotate.
[0116] In this embodiment, the rotating component 14 can drive the color wheel 13 to rotate. During the rotation of the color wheel 13, the first light-transmitting area 1321 and the second light-transmitting area 1331 can rotate around the fixed part 141. When the supporting part 121 contacts the first abutting position 1141 of the cam 114, the range of the first color ring 132 where the first light-transmitting area 1321 rotates is the area where the light from the light source 20 is transmitted. The annular range where the first light-transmitting area 1321 is located can have multiple light-transmitting areas of different colors. The rotation of the color wheel 13 allows light-transmitting areas of different colors to continuously pass through the light path, so that the color of the light passing through the annular area continuously changes. When the human eye observes a rapidly flashing or moving image, the photoreceptors on the retina will temporarily retain the image trace, causing multiple images to merge into a continuous dynamic image in the brain, which is the visual persistence effect.
[0117] By changing the color of different areas on the color wheel 13, or the area of different colored areas, the light passing through the color wheel 13 can appear in different colors and brightness.
[0118] For one possible implementation, please refer to [link / reference]. Figure 12 , Figure 12 yes Figure 3 The diagram shows a partial cross-sectional view of the cam assembly 11. The color wheel module 10 also includes a first detection structure 15, which is connected to the base 111 via a connecting plate 16. One end of the first rotating shaft 113 is positioned opposite to the first detection structure 15, and the first detection structure 15 is capable of identifying the rotation angle of the first rotating shaft 113.
[0119] In this embodiment, the first detection structure 15 can identify the contact area between the cam 114 and the abutment 121 by recognizing the rotation angle of the first rotating shaft 113. For example, when the first rotating shaft 113 is not rotating, the first abutment position 1141 of the cam 114 contacts the abutment 121, and at this time, the first light-transmitting area 1321 of the color wheel 13 can be located within the propagation path of the light from the light source 20. When the rotation angle of the first rotating shaft 113 is identified as a predetermined angle, it is confirmed that the second abutment position 1142 of the cam 114 contacts the abutment 121, and at this time, the second light-transmitting area of the color wheel 13 can be located within the propagation path of the light from the light source 20. When the rotation angle of the first rotating shaft 113 is identified as one revolution or approximately one revolution, it is confirmed that the first abutment position 1141 of the cam 114 contacts the abutment 121, and at this time, the first light-transmitting area 1321 of the color wheel 13 can be located within the propagation path of the light from the light source 20.
[0120] For one possible implementation, please refer to [link / reference needed]. Figure 12The color wheel module 10 also includes a magnetic component 17, which is connected to the end face of the first rotating shaft 113 facing the first detection structure 15. The magnetic component 17 can be located within the rotating shaft mounting hole 1115. Rotation of the first rotating shaft 113 can drive the magnetic component 17 to rotate, and the first detection structure 15 can identify the rotation angle of the first rotating shaft 113 by identifying the rotation angle of the magnetic component 17.
[0121] The first detection structure 15 can be a magnetic encoder.
[0122] In this embodiment, when the magnetic component 17 rotates with the first rotating shaft 113, the magnetic field of the magnetic component 17 changes. The first detection structure 15 can identify the change in magnetic field and convert it into an electrical signal, which is then sent to the external controller 200 to identify the rotation angle of the first rotating shaft 113.
[0123] When the first abutting position 1141 of the cam 114 contacts the abutting part 121, the light from the light source 20 can pass through the first light-transmitting area 1321. When the second abutting position 1142 of the cam 114 contacts the abutting part 121, the light from the light source 20 can pass through the second light-transmitting area 1331.
[0124] In one possible design, this application also provides a control system, including a controller 200 and a projection device 100 as described above. The controller 200 is capable of adjusting the rotation angle of the first rotating shaft 113 of the projection device 100 to control the contact position between the cam 114 and the abutment portion 121.
[0125] The above are exemplary embodiments of this application. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.
Claims
1. A color wheel module, characterized in that, include: A cam assembly includes a base, a first rotating shaft, and a cam. The first rotating shaft is rotatably connected to the base. The cam is sleeved on the first rotating shaft. The circumferential surface of the cam includes a first abutting position and a second abutting position. The distance between the first abutting position and the axis of the first rotating shaft is a first distance, and the distance between the second abutting position and the axis of the first rotating shaft is a second distance. The first distance is greater than the second distance. The movable component includes a supporting part and a mounting part connected to each other. The mounting part is slidably connected to the base. The supporting part abuts against the circumferential surface of the cam. The supporting part is located on the side of the cam facing a first direction, which is the radial direction of the first rotating shaft. The color wheel includes a connecting area, a first light-transmitting area, and a second light-transmitting area. The first light-transmitting area and the second light-transmitting area have different light-transmitting colors. The connecting area, the first light-transmitting area, and the second light-transmitting area are arranged along the first direction. The connecting area of the color wheel is connected to the mounting part. The rotation of the first rotating shaft can drive the cam to rotate, thereby changing the contact position between the cam and the abutment. When the first abutment position contacts the abutment, the first light-transmitting area is used for light to pass through. When the second abutment position contacts the abutment, the second light-transmitting area is used for light to pass through.
2. The color wheel module according to claim 1, characterized in that, The base is provided with a slide rail, which extends along the first direction, and the mounting part is slidably connected to the slide rail.
3. The color wheel module according to claim 2, characterized in that, The color wheel module also includes an elastic element that extends along the first direction. One end of the elastic element is connected to the base, and the other end of the elastic element is connected to the mounting portion. When the abutting portion abuts against the first abutting position of the cam, the elastic element is in a compressed state.
4. The color wheel module according to claim 3, characterized in that, When the abutting part abuts against the second abutting position of the cam, the elastic element is in a compressed state.
5. The color wheel module according to any one of claims 1-4, characterized in that, The color wheel module also includes a rotating component, which includes a fixed part and a second rotating shaft. The fixed part is fixedly connected to the mounting part, one end of the second rotating shaft is rotatably connected to the fixed part, and the other end of the second rotating shaft is fixedly connected to the connection area of the color wheel. The second rotating shaft is used to rotate relative to the fixed part to drive the cam to rotate.
6. The color wheel module according to claim 5, characterized in that, The color wheel includes a third light-transmitting area, which is arranged around the periphery of the connecting area along with the first light-transmitting area. The light-transmitting color of the third light-transmitting area is different from the light-transmitting color of the first light-transmitting area.
7. The color wheel module according to claim 6, characterized in that, The color wheel includes a fourth light-transmitting area, which, along with the second light-transmitting area, is located around the first and third light-transmitting areas. The fourth light-transmitting area and the second light-transmitting area have different light-transmitting colors.
8. The color wheel module according to any one of claims 1-4, characterized in that, The supporting part includes a connecting shaft and a transmission wheel. The connecting shaft is connected to the mounting part. The axial direction of the connecting shaft is the same as the axial direction of the first rotating shaft. The transmission wheel is sleeved on the connecting shaft and can rotate relative to the connecting shaft. The circumferential surface of the transmission wheel abuts against the circumferential surface of the cam.
9. The color wheel module according to any one of claims 2-4, characterized in that, The mounting part is provided with a guide hole, which penetrates the mounting part along the first direction and is sleeved on the outer periphery of the slide rail.
10. The color wheel module according to claim 9, characterized in that, The number of guide holes is two, and the two guide holes are spaced apart along the axial direction of the first rotating shaft. The number of slide rails is two, and one slide rail passes through one of the guide holes.
11. The color wheel module according to claim 10, characterized in that, The mounting part is also provided with an elastic element receiving groove, which is located between the two guide holes. At least part of the elastic element is located in the elastic element receiving groove, and one end of the elastic element is connected to the groove wall of the elastic element receiving groove.
12. The color wheel module according to any one of claims 1-4, characterized in that, The color wheel module further includes a first detection structure, wherein the first detection junction is connected to the base; One end of the first rotating shaft is positioned opposite to the first detection structure, and the first detection structure is capable of identifying the rotation angle of the first rotating shaft.
13. The color wheel module according to claim 12, characterized in that, The color wheel module also includes a magnetic component, which is connected to the end face of the first rotating shaft facing the first detection structure. The rotation of the first rotating shaft can drive the magnetic component to rotate, and the first detection structure can identify the rotation angle of the first rotating shaft by identifying the rotation angle of the magnetic component.
14. A projection device, characterized in that, The device includes a light source and a color wheel module as described in any one of claims 1-13. The light source is used to emit light to the color wheel module. When the first abutting position of the cam contacts the abutting part, the light from the light source can pass through the first light-transmitting area. When the second abutting position of the cam contacts the abutting part, the light from the light source can pass through the second light-transmitting area.
15. A vehicle light, characterized in that, It includes a lamp housing and a projection device as described in claim 14, wherein the lamp housing has a receiving space and the projection device is installed in the receiving space.
16. A control system, characterized in that, Includes a controller and a projection device as described in claim 14, wherein the controller is capable of adjusting the rotation angle of the first rotating shaft of the projection device to control the contact position between the cam and the abutment portion.
17. A means of transportation, characterized in that, It includes a vehicle body and a projection device as described in claim 14, the projection device being connected to the vehicle body.