Projection device and lamp

Abstract

The embodiment of the utility model relates to a projection device and a lamp, and relates to the technical field of projection. The projection device is used for projecting to a light receiving surface and comprises at least two projection modules and a first driving device. Each projection module comprises a light source assembly and a light emitting cover, the light emitting cover is arranged on an emergent light path of emergent light formed by the corresponding light source assembly, the light emitting cover in at least one projection module is provided with a first texture structure, and the first driving device is in transmission connection with the light emitting cover of at least one projection module. According to the projection device, multiple texture lighting effects can be formed by arranging the first texture structure on the light emitting cover. In addition, the light emitting cover can rotate, the light effect with at least partial dynamic change can be formed, and the projection effect is further enriched.

Description

Technical Field

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

[0002] Projection devices are often used in some indoor places. They use the principles of light interference and diffraction to create a lighting or image environment, which is helpful for people to relieve fatigue and stress caused by a day's work and has a good decorative effect. When the existing projection device presents a projected image, the light source component penetrates the film or slide and then transmits through the light-transmitting cover wall and emits to the light receiving surface, which can only present a single type of image, and the resulting projection effect is relatively monotonous. Utility Model Content

[0003] In view of this, the embodiments of the present application provide a projection device and a lamp to solve the above technical problems.

[0004] According to the first aspect of the present application, an embodiment of the present application provides a projection device, which is used for projecting onto a light receiving surface. The projection device includes at least two projection modules and a first driving device, each projection module includes a light source assembly and a light output cover, and the light output cover is arranged on an output light path of an output light beam formed by a corresponding light source assembly. The light output cover in at least one projection module is provided with a first texture structure. The first driving device is transmission-connected to the light output cover to drive the light output cover of at least one projection module to rotate.

[0005] In some embodiments, the light output covers of at least two projection modules are both provided with a first texture structure, and the first texture structures in at least two projection modules are different.

[0006] In some embodiments, the number of the first driving devices is at least two, and each first driving device is connected to the light output cover in each projection module in a one-to-one corresponding manner.

[0007] In some embodiments, the at least two projection modules include a first projection module and a second projection module. The first driving device includes a first driving motor and a first transmission member connected to the first driving motor, and the light output cover of the second projection module and the light output cover of the first projection module are both connected to the transmission member.

[0008] In some embodiments, each projection module further includes a texture sheet, the texture sheet is disposed between the corresponding light output cover and the light source assembly, the texture sheet is located on the output light path, and the texture sheet is provided with a second texture structure.

[0009] In some embodiments, in each projection module, the projection of the light output mask along the output light path at least partially overlaps with the projection of the texture sheet along the output light path, so that at least part of the output light sequentially transmits the first texture structure and the second texture structure.

[0010] In some embodiments, in each projection module, the first texture structure and the second texture structure are different, and the projection of the light output cover along the output light path and the projection of the texture sheet along the output light path have non-overlapping parts.

[0011] In some embodiments, at least two projection modules include a first projection module and a second projection module; the projection device also includes a second driving device, and the texture sheet of the first projection module and the texture sheet of the second projection module are both transmission-connected to the second driving device.

[0012] In some embodiments, in each projection module, the first driving device is used to drive the light output cover to rotate around a first axis, the texture sheet is rotatably arranged and can rotate around a second axis, and the first axis and the second axis are parallel.

[0013] In some embodiments, in each projection module, the light source assembly includes a lens and a light emitting unit, the optical axis of the lens is parallel to the second axis, and the optical axis of the lens is parallel to or coincides with the first axis.

[0014] According to a second aspect of the present application, an embodiment of the present application provides a lamp, any one of the above-mentioned projection devices and a circuit board, wherein the circuit board is electrically connected to the projection device.

[0015] Compared with the prior art, in the projection device provided in this embodiment, the projection device includes at least two projection modules, and the projection light effect of the projection device can be adjusted by setting a light output cover. Specifically, the light output cover of at least one projection module is provided with a first texture structure, and the outgoing light transmits the first texture structure so that the distribution and brightness of the outgoing light change. On the one hand, the outgoing light can be emitted from the light output cover to the light receiving surface, thereby improving the uniformity of the distribution of the projection picture or further adjusting the picture content of the projection picture; on the other hand, the outgoing light can carry the texture information of the first texture structure, thereby forming a variety of light texture effects, increasing the visual effect and attractiveness of the projected image. In addition, in this embodiment, the projection device also includes a first driving device, which is transmission-connected to the light output cover of at least one projection module, so that when the first driving device drives at least one light output cover to rotate, at least two projection modules are linked to emit light, and the outgoing light can form at least a partially dynamically changing light effect on the light receiving surface, further enriching the projection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of a lighting fixture provided by an embodiment of the present application.

[0018] Figure 2 It is a schematic structural diagram of a projection device provided by an embodiment of the present application.

[0019] Figure 3 is Figure 2 An exploded schematic structural diagram of the projection device shown.

[0020] Figure 4 is Figure 3 A schematic structural diagram of a texture sheet in the projection device shown.

[0021] Figure 5 is Figure 3 A bottom view of the light-emitting cover in the projection device shown.

[0022] Figure 6 It is another schematic structural diagram of a projection device provided by an embodiment of the present application.

[0023] Figure 7 is Figure 6 An exploded schematic structural diagram of the projection device shown.

[0024] Figure 8 It is another schematic structural diagram of a projection device provided by an embodiment of the present application.

[0025] Figure 9 It is another schematic structural diagram of a projection device provided by an embodiment of the present application.

[0026] Figure 10 Another schematic structural diagram of a projection device provided by an embodiment of the present application.

[0027] Figure 11 Another schematic structural diagram of a projection device provided by an embodiment of the present application.

[0028] Figure 12 Another schematic structural diagram of a projection device provided by an embodiment of the present application. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0030] It should be noted that when an element / component is referred to as being "fixed to" another element / component, it can be directly on the other element / component or there can also be a middle element / component. When an element / component is considered to be "connected to" another element / component, it can be directly connected to the other element / component or there may be a middle element / component at the same time; meanwhile, when an element / component is considered to be "connected to" another element / component, it can be integrally formed and connected or assembled and connected with the other element / component. When an element / component is considered to be "disposed on" another element / component, it can be directly disposed on the other element / component or there may be a middle element / component at the same time.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments, and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] Please refer to Figure 1 and Figure 2 , an embodiment of the present application provides a projection device 100. The projection device 100 is used to project onto a light receiving surface. The projection device 100 includes at least two projection modules 10 and a first driving device 20. The light receiving surface is a plane for receiving and displaying the projected projection pattern, and it can include reflective parts such as the ground, wall surface, ceiling, etc. The projection device 100 can be applied to projection lamps. According to different specified patterns, the projection device 100 can be used for starry sky projection devices 100, advertising projection devices 100, LOGO projection devices 100, etc., that is, projection lamps can include starry sky projection lamps, advertising projection lamps, LOGO projection lamps, etc.

[0033] An embodiment of the present application further provides a lighting fixture 200, which includes the aforementioned projection device 100 and a circuit board 201. The projection device 100 is electrically connected to the circuit board 201. In the embodiment of the present application, the circuit board 201 may include a control module (not shown in the figure), and the control module may be a control chip. The control module is electrically connected to the first driving device 20 to control the output power of the first driving device 20, thereby controlling the rotation speed of the projection module 10, so as to form a projection effect with inconsistent projection spot change rates. In the embodiment of the present application, the circuit board 201 may further include a power supply module (not shown in the figure), and the power supply module is connected to the projection module 10 to supply electrical energy to the projection module 10.

[0034] In this embodiment, the lighting fixture 200 may further include a housing 202. An accommodation space 2021 is provided inside the housing 202, and the accommodation space 2021 is used to accommodate the projection device 100, the circuit board 201 or other components, so as to protect and accommodate the projection device 100, the circuit board 201 or other components. In some embodiments, the housing 202 is provided with a light outlet 2022. The light outlet 2022 communicates the accommodation space 2021 with the outside for the outgoing light to emit from the housing 202. Specifically, the number of the light outlets 2022 may be two, and the two light outlets may be respectively disposed opposite to the two projection devices 100. The light emitted by the projection device 100 can be projected onto the light receiving surface through the light outlet 2022 on the housing 202.

[0035] Please refer to Figure 3In one embodiment provided in the present application, a projection device 100 is used for projecting onto a light receiving surface. The projection device 100 includes at least two projection modules 10 and a first driving device 20. Each projection module 101 includes a light source assembly 11 and a light output cover 13, and the light output cover 13 is arranged on an outgoing light path of an outgoing light beam formed by the corresponding light source assembly 11. The light output cover 13 in at least one projection module 10 is provided with a first texture structure 131, and the first driving device 20 is transmission-connected to the light output cover 13 to drive the light output cover 13 of at least one projection module 10 to rotate. By arranging the first texture structure 131 on the light output cover 13 of at least one projection module 10, the distribution and brightness of the light when the outgoing light beam passes through the first texture structure 131 are changed. On the one hand, the outgoing light beam can be emitted from the light output cover 13 to the light receiving surface, thereby improving the uniformity of the distribution of the projection picture; on the other hand, the outgoing light beam can carry the texture information of the first texture structure 131, thereby forming a variety of light texture effects, thereby increasing the visual effect and attractiveness of the projection image. In addition, in this embodiment, the projection device 100 also includes a first driving device 20, which is transmission-connected to a light output cover 13 of at least one projection module 10, so that when the first driving device 20 drives at least one light output cover 13 to rotate, at least two projection modules 10 jointly emit light, and the emitted light can form at least a partially dynamically changing light effect on the light receiving surface, further enriching the projection effect.

[0036] Next, each component of the projection device 100 and the specific structure of each component will be introduced one by one.

[0037] See also Figure 3 In this embodiment, one end of each projection module 10 is connected to the circuit board 201 to form a projection light path. Each projection module 10 includes a light source assembly 11 and a light output cover 13 .

[0038] The light source component 11 is used to convert electrical energy into light energy and generate outgoing light, and the light source component 11 is fixedly connected to the circuit board 201. The light source component 11 may include a light emitting unit 111 and a lens 112, and the lens 112 is located on the optical path of the outgoing light formed by the light source. Specifically, the light emitting unit 111 is detachably connected to the circuit board 201 and is arranged at an interval from the dimming sheet 12, and the outgoing light formed by the light emitting unit 111 is emitted to the light receiving surface through the light emitting cover 13. The light emitting unit 111 may be an incoherent light source, specifically, a high-pressure gas light emitting source such as a halogen light bulb, a UHP (ultra-high pressure mercury lamp), a UHE (ultra-high pressure mercury lamp), or an LED light source, etc. As an example, the light emitting unit 111 is an LED light source, specifically, it may be a monochromatic LED lamp bead or a colorful LED lamp bead. On the one hand, it can improve the efficiency of converting electrical energy into light energy, thereby reducing energy waste, and at the same time, the heat generated during the lighting of the LED light source is less, playing a role in energy conservation and environmental protection; on the other hand, the LED light source has a long service life, reducing the frequency of light source replacement, thereby reducing the use cost. At the same time, the LED can avoid damaging the user's eyes and improve the use safety.

[0039] In the embodiment of the present application, the lens 112 is used to collect the outgoing light generated by the light emitting unit 111 and emit it to the dimming sheet 12 or the light emitting cover 13. Specifically, the lens 112 may be a total internal reflection (TIR) lens 112. The lens 112 is connected to the circuit board 201, and a receiving groove (not shown in the figure) is provided on the side of the lens 112 facing away from the dimming sheet 12. The light emitting unit 111 is arranged in the receiving groove, so that the light generated by the light emitting unit undergoes total internal reflection in the TIR lens 112, which can improve the utilization rate of light. At the same time, the TIR partial lens 112 has a smaller light collecting area and excellent light homogenization, and can achieve light concentration in a smaller space, thereby reducing light energy loss and realizing uniform light emission. It can be understood that in some embodiments, the lens 112 may also be a convex lens, and the scattered light formed by the light emitting unit 111 is gathered by the convex lens 112 and then emitted to the dimming sheet 12 or the light emitting cover 13.

[0040] Please refer to Figure 3 and Figure 5, in this embodiment, the light-emitting cover 13 is disposed on the outgoing light path formed by the light source assembly 11, and the outgoing light generated by the light source assembly 11 passes through the light-emitting cover 13 and is emitted to the light receiving surface. Specifically, the outer contour of the light-emitting cover 13 is generally hemispherical, and the light-emitting cover 13 in at least one projection module 10 is provided with a first texture structure 131. The first texture structure 131 can be disposed on the surface of the light-emitting cover 13, and the first texture structure 131 is used for scattering light and improving the light-emitting uniformity. The first texture structure 131 can be a honeycomb structure, a scale-like structure, a bead surface structure, etc., and this embodiment does not make specific limitations thereto. As an example, the first texture structure 131 is a honeycomb structure, which is generally arranged in a regular hexagon. When the outgoing light propagates to the light-emitting cover 13, it is fully mixed under the action of the first texture structure 131, so as to achieve the effect of uniform light emission. In addition, the outgoing light path at the first texture structure 131 will change, and the outgoing light can be reflected to different areas of the light receiving surface, further increasing the projection area.

[0041] In some embodiments, the distribution density of the first texture structure 131 in different areas of the light-emitting cover 13 can be different, so that when the area where the outgoing light passes through the light-emitting cover 13 is different, the deflection angle of the light is different, and thus it can be emitted to different areas of the light receiving surface to increase the projection range. It can be understood that the distribution of the first texture structure 131 on the light-emitting cover 13 can also have other forms. For example, the distribution density of the first texture structure 131 in different areas of the light-emitting cover 13 is different, or the distribution density of the first texture structure 131 in some areas of the light-emitting cover 13 is the same, and the distribution density of the remaining areas is different, etc. The distribution form of the first texture structure 131 on the light-emitting cover 13 can be set according to actual application requirements, so as to form a variety of projection light effects. This embodiment does not make specific limitations on the density distribution of the first texture structure 131 on the light-emitting cover 13. In other embodiments, the sizes and shapes of the first texture structure 131 in different areas of the light-emitting cover 13 can be the same or different, so that the projection light effects formed by the outgoing light passing through the first texture structure 131 of different shapes or sizes are different, further improving the projection effect.

[0042] In some other embodiments, when the light-emitting covers 13 of at least two projection modules 10 are each provided with a first texture structure 131, the first texture structures 131 of the at least two projection modules 10 are different from each other, so as to be able to further form a variety of changing light effects. For example, the first texture structure 131 on the light-emitting cover 13 in one of the projection modules 10 may be a bead surface structure, and each bead surface structure is generally circular, while the first texture structure 131 on the light-emitting cover 13 in another projection module 10 is a honeycomb structure, and each honeycomb structure is generally hexagonal. Thus, the refraction angles of the emitted light on the two first texture structures 131 are different, so that the distributions of the light spots refracted by different projection modules 10 on the light receiving surface are different, and a variety of different projection effects can be formed. It should be noted that the first texture structures 131 of the at least two projection modules 10 may also be different in size and distribution density, so as to be able to form a variety of different projection effects. It can be understood that the first texture structures 131 in each projection module 10 are all set in different forms, so that when each projection module 10 projects onto the light receiving surface together, the light effects presented by each projection module 10 are different from each other.

[0043] Please refer to Figure 3 , in this embodiment, in order to form a variety of projection light effects, the light-emitting cover 13 can also be drivingly connected to the first driving device 20, so that under the drive of the first driving device 20, the light-emitting cover 13 of at least one projection module 10 can rotate, so that at least some of the light spots formed by the emitted light of the multiple projection modules 10 on the light receiving surface can rotate, forming a dynamic projection effect.

[0044] By controlling the rotation speed of the first driving device 20 to control the rotation or movement speed of the light-emitting cover 13, so as to form a moving and changing light spot effect on the light receiving surface. Please refer to Figure 6 , as an example, the number of the first driving devices 20 can be one, and the first driving device 20 is drivingly connected to the light-emitting cover 13 of one of the at least two projection modules 10, so that among the multiple projection light spots correspondingly formed by the multiple projection modules 10, there is a dynamically changing light spot formed by one projection module 10, and the light spots formed by the other projection modules 10 are stationary light spots. In addition, one first driving device 20 can also be drivingly connected to the light-emitting covers 13 of two of the multiple projection modules 10 or drivingly connected to the light-emitting covers 13 of the multiple projection modules 10, so that there are multiple rotating light spots among the correspondingly formed light spots of the multiple projection modules 10, which can enrich the projection light effect and simplify the operation process.

[0045] It should be noted that in some other embodiments, the number of the first driving devices 20 can also be multiple. The multiple first driving devices 20 are respectively arranged corresponding to the light-emitting covers 13 in the multiple projection modules 10, so as to realize the individual control of each light-emitting cover 13. Specifically, the rotation angles and rotation speeds of the light-emitting covers 13 in the multiple projection modules 10 can be different from each other, or the rotation angles or rotation speeds of some of the light-emitting covers 13 can be the same. According to the actual projection requirements, the output powers of the multiple first driving devices 20 can be controlled to respectively control the rotation speeds of the multiple light-emitting covers 13 to form various projection light effects. For example, the rotation speed of one of the light-emitting covers 13 is relatively fast, and the rotation speed of another light-emitting cover 13 is relatively slow. Thus, among the multiple dynamically changing light spots formed by the multiple projection modules 10, the flicker frequencies of some of the light spots are relatively fast, and the flicker frequencies of some of the light spots are relatively slow, realizing the dynamic effect of the projected image required by the user, and thus forming a novel and realistic projection effect.

[0046] When the light-emitting covers 13 of the multiple projection modules 10 are drivingly connected to the first driving devices 20, the light-emitting covers 13 of adjacent projection modules 10 can rotate in the same direction or in opposite directions to form light spots with the same moving direction or light spots with opposite moving directions, so as to improve the projection effect.

[0047] Specifically, please refer to Figure 6 and Figure 7 , in some embodiments, at least two of the projection modules 10 include a first projection module 101 and a second projection module 102. The first projection module 101 and the second projection module 102 are arranged at intervals and jointly emit light to the light receiving surface. The first projection module 101 may include a first light source assembly 1011 and a first light-emitting cover 1013. The first light source assembly 1011 is used to form an outgoing light path, and the first light-emitting cover 1013 is arranged on the outgoing light path formed by the first light source assembly 1011. The second projection module 102 may include a second light source assembly 1021 and a second light-emitting cover 1023. The second light source assembly 1021 is used to form an outgoing light path, and the second light-emitting cover 1023 is arranged on the outgoing light path formed by the second light source assembly 1021. A first texture structure 131 is provided on the light-emitting cover 13 (i.e., the first light-emitting cover 1013) of the first projection module 101. The first texture structure 131 may or may not be provided on the light-emitting cover 13 (i.e., the second light-emitting cover 1023) of the second projection module 102, so as to form various projection light effects. The above-mentioned first light source assembly 1011 and second light source assembly 1021 have the same features or are the same component as the light source assembly 11 mentioned above; the first light-emitting cover 1013 and the second light-emitting cover 1023 have the same features or are the same component as the light-emitting cover 13 mentioned above. Different names are used here for the convenience of description. For the sake of saving space, specific descriptions are not made in this embodiment.

[0048] Specifically, please refer to Figure 6 and Figure 7 , the first driving device 20 includes a first driving motor 21 and a first transmission member 22. The output shaft of the first driving motor 21 and the first transmission member 22 are coaxially arranged. The first driving motor 21 and the first projection module 101 or the second projection module 102 are spaced apart. The first driving motor 21 is drivingly connected to the first light-emitting cover 1013 and the second light-emitting cover 1023 to provide rotational power for the first light-emitting cover 1013 and the second light-emitting cover 1023. The first transmission member 22 may include a first gear 221. The number of gears included in the first gear 221 may be one or more, and this embodiment does not limit this. The first transmission member 22 is drivingly connected between the first light-emitting cover 1013 or the second light-emitting cover 1023 and the first driving motor 21.

[0049] In this embodiment, the light-emitting cover 13 of the first projection module 101 is provided with a first meshing tooth 1015, and the light-emitting cover 13 of the second projection module 102 is provided with a second meshing tooth 1025. The first gear 221 and the second meshing tooth 1025 are respectively meshed with the first meshing tooth 1015. Specifically, the first light-emitting cover 1013 includes a first texture portion 1014 and a first meshing tooth 1015. The first meshing tooth 1015 surrounds the outer periphery of the first texture portion 1014, and the first texture structure 131 is disposed on the first texture portion 1014. The second light-emitting cover 1023 includes a second texture portion 1024 and a second meshing tooth 1025. The second meshing tooth 1025 surrounds the outer periphery of the second texture portion 1024, and the first texture structure 131 is disposed on the second texture portion 1024. Both the first meshing tooth 1015 and the second meshing tooth 1025 are provided with a plurality of tooth-like structures, and the plurality of tooth-like structures respectively protrude outwardly away from the first texture portion 1014 and the second texture portion 1024. When the first meshing tooth 1015 is directly meshed with the second meshing tooth 1025, the first gear 221 in the first driving device 20 can be meshed with the first meshing tooth 1015. Thus, when the first driving motor 21 drives the first gear 221 to rotate, the first meshing tooth 1015 rotates, that is, the first light-emitting cover 1013 rotates, and the second meshing tooth 1025 meshed with the first meshing tooth 1015 will also rotate accordingly. At this time, the rotation directions of the second light-emitting cover 1023 and the first light-emitting cover 1013 are opposite, and the movement directions of the light spots formed by the light emitted through the first light-emitting cover 1013 on the light receiving surface and the movement directions of the light spots formed by the light emitted through the second light-emitting cover 1023 on the light receiving surface are also opposite. It can be understood that the first gear 221 can also be meshed with the second meshing tooth 1025, so that the first driving motor 21 drives the second light-emitting cover 1023 to rotate, and the first light-emitting cover 1013 meshed with the second light-emitting cover 1023 also rotates accordingly. The rotation directions between the two are opposite.

[0050] Please refer to Figure 8, as another example, the first engaging tooth 1015 and the second engaging tooth 1025 can also be engaged with the first gear 221 respectively. Specifically, the first driving device 20 can be disposed between the first projection module 101 and the second projection module 102, so that the first gear 221 is engaged with the first engaging tooth 1015 and the second engaging tooth 1025 respectively. When the first driving motor 21 drives the first gear 221 to rotate, the first light output cover 1013 and the second light output cover 1023 will also rotate accordingly. At this time, the rotation directions of the first light output cover 1013 and the second light output cover 1023 are the same, and the moving direction of the light spot formed by the light emitted through the first light output cover 1013 on the light receiving surface is the same as the moving direction of the light spot formed by the light emitted through the second light output cover 1023 on the light receiving surface.

[0051] Please refer to again Figure 3 , in this embodiment, each projection module 10 may further include a texture sheet 12. The texture sheet 12 is generally arranged in a plate shape, and its outer contour may be in shapes such as a rectangle or a circle. This embodiment does not limit this. The texture sheet 12 is disposed on the outgoing light path formed by the corresponding light source assembly 11 and is located between the corresponding lens 112 and the corresponding light output cover 13. The texture sheet 12 is used to improve the light output uniformity of the outgoing light and enable the outgoing light to carry texture information so as to form a texture light effect on the light receiving surface. Specifically, the material of the texture sheet 12 can be a glass material, or a combination of one or more of high transmittance light transmissive materials such as plastic, plastic, acrylic, and polycarbonate. As an example, the material of the dimming sheet 12 is an optical resin. Due to its high refractive index characteristic, it can highly restore the color of the projected picture. At the same time, the optical resin has the characteristics of high hardness and wear resistance, which can improve the service life of the texture sheet 12.

[0052] Please refer to Figure 3 and Figure 4, each texture sheet 12 is provided with a second texture structure 121, and the second texture structure 121 is used to improve the light-emitting uniformity of the emitted light and enable the emitted light to carry texture information. Specifically, the texture sheet 12 has a first surface 1211 and a second surface 1212 facing away from each other, and the first surface 1211 faces the first light-emitting unit 111. When the emitted light formed by the light source assembly 11 propagates to the second texture structure 121, the optical path changes, and the light can be dispersed to different areas of the light-emitting cover 13, so that it can be emitted to different areas of the light-receiving surface, further improving the light-emitting uniformity and forming a larger projection area, and improving the projection effect of the lamp 200. The second texture structure 121 can be a corrugated structure, a convex column structure or a prism array structure, or other grating structures, etc., so that the emitted light transmitted through the second texture structure 121 can form a corrugated light effect, a striped light effect, etc. on the light-receiving surface. As an example, the number of the second texture structures 121 is multiple, and the multiple second texture structures 121 are distributed on the first surface 1211 or the second surface 1212 of the texture sheet 12. The second texture structure 121 can be a corrugated structure, so that the emitted light can carry corrugated information when passing through the texture sheet 12 and form a corrugated light effect on the light-receiving surface.

[0053] Please refer to Figure 4, Further, in some embodiments, the distribution density of the second texture structure 121 in different regions of the texture sheet 12 can be different. Thus, the emergent light transmitting through the second texture structure 121 with different distribution densities can form a texture light effect with inconsistent density on the light receiving surface. Only as an example, the distribution density of the second texture structure 121 near the central region 122 of the texture sheet 12 is relatively sparse, and the distribution of the second texture structure 121 near the edge region 123 of the texture sheet 12 is relatively dense. Since the texture sheet 12 faces the light emitting unit 111, most of the light is concentrated in the central region 122, and a small part of the light exits from the edge region 123, making the light spot of the projection corresponding to the central region 122 brighter. By setting the central region 122 where the second texture structure 121 is relatively sparse, the coincidence rate of the light spots in the projection region corresponding to the central region 122 can be reduced, glare can be reduced, and visual comfort can be improved. And by setting the edge region 123 where the second texture structure 121 is relatively dense, the brightness of the projection region corresponding to the edge region 123 can be increased, and the texture light effect of the projection corresponding to the edge region 123 can be increased, achieving a more uniform projection effect. It should be noted that the distribution of the second texture structure 121 on the texture sheet 12 can also have other forms. For example, the distribution densities of the second texture structure 121 in different regions of the texture sheet 12 are all different, or the distribution densities of the second texture structure 121 in some regions of the texture sheet 12 are the same, and the distribution densities of the remaining regions are different, etc. The distribution form of the second texture structure 121 on the texture sheet 12 can be set according to actual application requirements, so as to form various projection light effects. In this embodiment, the density distribution of the second texture structure 121 on the texture sheet 12 is not specifically limited.

[0054] In some other embodiments, the second texture structure 121 can also be disposed inside the texture sheet 12. The sizes and shapes of the plurality of second texture structures 121 can be the same or different. Thus, the projection light effects formed by the emergent light transmitting through the second texture structures 121 with different shapes or sizes are different, further improving the projection effect.

[0055] In this embodiment, since the texture sheets 12 and the light output shield 13 in each projection module 10 are arranged alternately on the corresponding output light path, and the projections of the texture sheets 12 and the light output shield 13 along the corresponding output light path have at least partially overlapping areas and partially non-overlapping areas, part of the output light can sequentially transmit the second texture structure 121 and the first texture structure 131 to the outside, and during the rotation of the light output shield 13, the light transmitted through the same area of the texture sheet 12 penetrates different areas of the light output shield to form a variety of changing light effects on the light receiving surface. Further, the first texture structure 131 can be different from the second texture structure 121, and the projection of the light output shield 13 along the output light path has a non-overlapping part with the projection of the texture sheet 12 along the output light path, so that the light effect formed when the output light only transmits the second texture structure 121 is different from the light effect formed when the output light sequentially transmits the second texture structure 121 and the first texture structure 131, and a variety of projection effects can be formed to increase the visual experience of the user.

[0056] See also Figure 9 In order to further form a variety of projection light spots, in some embodiments, the projection device 100 may further include a second driving device 30, which is used to drive the texture sheets 12 connected to at least two projection modules 10, so that the texture sheets 12 of at least two projection modules 10 rotate in conjunction. For the convenience of description, the at least two projection modules 10 include the first projection module 101 and the second projection module 102 mentioned above, the first projection module 101 includes the first texture sheet 1012, and the second projection module includes the second texture sheet 1022. The first texture sheet 1012 and the second texture sheet 1022 have the same features or the same elements as the texture sheet 12 mentioned above. Different names are used here for the convenience of description. In order to save space, this embodiment will not be described in detail. Specifically, when the shapes, sizes, or arrangement densities of the second texture structures 121 distributed in different areas on the first texture sheet 1012 are different, or the shapes, sizes, or arrangement densities of the second texture structures distributed in different areas on the second texture sheet 1022 are different, during the rotation of the first texture sheet 1012 or the second texture sheet 1022, the same light can be emitted to different first texture structures 131 or different second texture structures 121, and a variety of changing light spots can be formed in the same area of the light receiving surface, which can further improve the projection light effect of the lamp 200.

[0057] In this embodiment, the second driving device 30 may include a second driving motor 31 and a second gear 32 connected to each other, and the output shaft of the second driving motor 31 and the second gear 32 are coaxially arranged. The second driving motor 31 and the first projection module 101 or the second projection module 102 are arranged at intervals. The number of gears included in the second gear 32 may be one or more, and this embodiment does not limit this. The texture sheet 12 of the first projection module 101 is provided with third engagement teeth 1017, and the texture sheet 12 of the second projection module 102 is provided with fourth engagement teeth 1027. The second gear 32 and the third engagement teeth 1017 are respectively engaged with the fourth engagement teeth 1027. Specifically, in this embodiment, the texture sheet 12 of the first projection module 101, that is, the first texture sheet 1012, includes a third texture portion 1016 and third engagement teeth 1017. The third engagement teeth 1017 surround the outer periphery of the third texture portion 1016, and the second texture structure 121 is disposed on the third texture portion 1016. The texture sheet 12 of the second projection module 102, that is, the second texture sheet 1022, includes a fourth texture portion 1026 and fourth engagement teeth 1027. The fourth engagement teeth 1027 surround the outer periphery of the fourth texture portion 1026, and the second texture structure 121 is disposed on the fourth texture portion 1026. A plurality of tooth-shaped structures are provided on both the third engagement teeth 1017 and the fourth engagement teeth 1027, and the plurality of tooth-shaped structures respectively protrude toward the side away from the third texture portion 1016 and the fourth texture portion 1026. When the third engagement teeth 1017 are directly engaged with the fourth engagement teeth 1027, the second gear 32 in the second driving device 30 can be engaged with the fourth engagement teeth 1027. Thus, when the second driving motor 31 drives the second gear 32 to rotate, the fourth engagement teeth 1027 rotate, that is, the second texture sheet 1022 rotates, and the third engagement teeth 1017 engaged with the fourth engagement teeth 1027, that is, the first texture sheet 1012, will also rotate accordingly. At this time, the rotation directions of the first texture sheet 1012 and the second texture sheet 1022 are opposite. It can be understood that the second gear 32 can also be engaged with the third engagement teeth 1017, so that the second driving motor 31 drives the first texture sheet 1012 to rotate, and the second texture sheet 1022 engaged with the first texture sheet 1012 also rotates accordingly, and the rotation directions between the two are opposite.

[0058] Please refer to Figure 10, as another example, the third engaging tooth 1017 and the fourth engaging tooth 1027 can also be engaged with the second gear 32 respectively. Specifically, the second driving device 30 can also be disposed between the first projection module 101 and the second projection module 102, so that the second gear 32 is engaged with the third engaging tooth 1017 and the fourth engaging tooth 1027 respectively. When the second driving motor 31 drives the second gear 32 to rotate, the first texture sheet 1012 and the second texture sheet 1022 will also rotate accordingly. At this time, the rotation directions of the first texture sheet 1012 and the second texture sheet 1022 are the same. It can be understood that whether the rotation directions of the first texture sheet 1012 and the second texture sheet 1022 are the same or opposite, the same outgoing light can transmit the second texture structures 121 in different regions of the first texture sheet 1012 or the second texture structures 121 in different regions of the second texture sheet 1022, thereby forming a variety of projection light effects.

[0059] In this embodiment, since the dimming sheet 12 and the light-emitting cover 13 in each projection module 10 are staggered on the corresponding outgoing light paths, in the first projection module 101, the rotation axes of the first texture sheet 1012 and the first light-emitting cover 1013 do not coincide, and various projection effects can be formed by the rotational cooperation between the first texture sheet 1012 and the first light-emitting cover 1013. Specifically, when the first texture sheet 1012 and the first light-emitting cover 1013 project along their respective rotation axes onto the projection light path, there are overlapping regions and non-overlapping regions. The overlapping regions can be directly opposite the first light source assembly 1011, so that the outgoing light can sequentially transmit through the first texture sheet 1012 and the first light-emitting cover 1013 and exit to the light receiving surface. Since both the first texture sheet 1012 and the first light-emitting cover 1013 can rotate, the second texture structures 121 at different positions on the first texture sheet 1012 and the first texture structures 131 in different regions on the first light-emitting cover 1013 can all rotate to the overlapping regions, so that the outgoing light can transmit different second texture structures 121 and first texture structures 131 to form a variety of projection light effects. Similarly, the second texture sheet 1022 and the second light-emitting cover 1023 are also staggered on the corresponding outgoing light paths, and there is also the above-mentioned outgoing light path between them. When the first projection module 101 and the second projection module 102 work together, a variety of combined lighting effects can be formed.

[0060] Please refer to Figure 11, in some other embodiments, in order to achieve separate control of the first texture sheet 1012 and the second texture sheet 1022, the second driving motor 31 and the third driving motor 3333 may be respectively provided to drive the first texture sheet 1012 and the second texture sheet 1022 to rotate. Specifically, the second driving device 30 may include a second driving motor 31, a second transmission member 32, a third driving motor 33, and a third transmission member 34. The second driving motor 31 is connected to the second transmission member 32, and the second transmission member 32 may be connected to the first texture sheet 1012. When the second driving motor 31 operates, the second driving motor 31 controls the second transmission member 32 to rotate, and at this time, the first texture sheet 1012 moves along with the rotation of the second transmission member 32. The third driving motor 33 is connected to the third transmission member 34, and the third transmission member 34 is connected to the second texture sheet 1022. When the second driving motor 31 operates, the second driving motor 31 controls the second transmission member 32 to rotate, and at this time, the second texture sheet 1022 moves along with the rotation of the second transmission member 32. It can be understood that when the lamp 200 includes a plurality of projection modules 10, a plurality of second driving devices 30 may be provided to correspondingly connect the texture sheets in the plurality of projection modules 10, so as to achieve separate control of the texture sheets 12 in each projection module 10. For example, the output powers of the plurality of second driving devices 30 are respectively controlled to control the rotation speeds of the texture sheets 12 in the plurality of projection modules 10, and the light rays emitted from different projection modules 10 can form a projection moving light effect with different spot change speeds on the projection receiving surface.

[0061] Please refer to Figure 7 and Figure 11 , it should be noted that the first texture sheet 1012 in the first projection module 101 and the second texture sheet 1022 in the second projection module 102 in any of the above-mentioned embodiments can rotate around the second axis O2, and the first light output cover 1013 and the second light output cover 1023 can rotate around the first axis O1. The first axis O1 and the second axis O2 are parallel. The first axis O1 may specifically be parallel to or coincide with the optical axis of the first lens 1018 in the first light source assembly 1011 or the optical axis of the second lens 1028 in the second light source assembly 1021, and the second axis O2 may specifically be parallel to or coincide with the axis where the geometric center of the first texture sheet 1012 is located or the axis where the geometric center of the second texture sheet 1022 is located. The optical axis of the first lens 1018, the optical axis of the second lens 1028, the axis where the geometric center of the first texture sheet 1012 is located, and the axis where the geometric center of the second texture sheet 1022 is located are parallel to each other. The above settings can ensure that the light rays propagate along a predetermined optical path and form more projection light spots on the light receiving surface, improving the optical efficiency and brightness of the lamp 200.

[0062] In summary, the embodiment of the present application provides a projection device 100, which includes at least two projection modules 10, and the projection light effect of the projection device 100 can be adjusted by setting a light output cover 13. Specifically, the light output cover 13 of at least one projection module 10 is provided with a first texture structure 131, and the outgoing light transmits the first texture structure 131 so that the distribution and brightness of the outgoing light change. On the one hand, the outgoing light can be emitted from the light output cover 13 to the light receiving surface, thereby improving the uniformity of the distribution of the projection picture; on the other hand, the outgoing light can carry the texture information of the first texture structure 131, thereby further forming a variety of light texture effects, increasing the visual effect and attractiveness of the projected image. In addition, in the present embodiment, the projection device 100 also includes a first driving device 20, and the first driving device 20 is transmission-connected to the light output cover 13 of at least one projection module 10, so that when the first driving device 20 drives at least one light output cover 13 to rotate, at least two projection modules 10 are linked to emit light, and the outgoing light can form at least a partially dynamically changing light effect on the light receiving surface, further enriching the projection effect.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0064] 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A projection device, characterized in that, The projection device is used to project onto a light receiving surface. The projection device includes at least two projection modules and a first driving device. Each projection module includes a light source assembly and a light exit cover. The light exit cover is disposed on the light exit path of the emitted light formed by the corresponding light source assembly. The light exit cover in at least one of the projection modules is provided with a first texture structure; The first driving device is drivingly connected to the light exit cover of at least one of the projection modules.

2. The projection device according to claim 1, characterized in that, The light exit covers of at least two of the projection modules are all provided with the first texture structure, and the at least two first texture structures are different from each other.

3. The projection device according to claim 1, wherein The number of the first driving devices is at least two, and each first driving device is drivingly connected to the light exit cover of each projection module in a one-to-one correspondence.

4. The projection device according to claim 1, wherein At least two of the projection modules include a first projection module and a second projection module, and the first texture structure is disposed on the light exit cover of the first projection module; The first driving device includes a first driving motor and a first transmission member connected to the first driving motor. The light exit cover of the second projection module and the light exit cover of the first projection module are both drivingly connected to the first transmission member.

5. The projection device according to any one of claims 1-4, characterized in that, Each projection module further includes a texture sheet. The texture sheet is disposed between the corresponding light exit cover and the light source assembly. The texture sheet is located on the light exit path, and the texture sheet is provided with a second texture structure.

6. The projection device according to claim 5, wherein, In each projection module, the projection of the light exit cover along the light exit path at least partially coincides with the projection of the texture sheet along the light exit path, so that at least part of the emitted light sequentially transmits through the first texture structure and the second texture structure; or, In each projection module, the first texture structure and the second texture structure are different, and the projection of the light exit cover along the light exit path and the projection of the texture sheet along the light exit path have non-coincident parts.

7. The projection device according to claim 5, wherein At least two of the projection modules include a first projection module and a second projection module; the projection device further includes a second driving device. The texture sheets of the first projection module and the second projection module are both drivingly connected to the second driving device.

8. The projection device according to claim 5, characterized in that, In each projection module, the first driving device is used to drive the light exit cover to rotate around a first axis, the texture sheet is rotatably arranged and can rotate around a second axis, and the first axis and the second axis are parallel.

9. The projection device according to claim 8, wherein, In each projection module, the light source assembly includes a lens and a light emitting unit. The optical axis of the lens is parallel to the second axis, and the optical axis of the lens is parallel to or coincides with the first axis.

10. A lighting fixture, characterized in that, Comprising: The projection device according to any one of claims 1 to 9; And A circuit board, which is electrically connected to the projection device.

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