CN220186632U - Projection imaging device and lamp - Google Patents

Abstract

The utility model relates to a projection imaging device and a lamp. The projection imaging device comprises a fixed support, a light source module, a movable support, a film module and a driving mechanism. The light source module is fixedly arranged on the fixed support, the movable support is movably connected to the fixed support, the film module is arranged on the movable support and arranged on a light path of the light source module, light emitted by the light source module can penetrate through the film module to be emitted, the driving mechanism is connected to the movable support in a transmission manner and drives the movable support to drive the film module to rotate around a designated rotating shaft, the rotating shaft is not overlapped with an optical axis of the light source module, along with rotation of the film module, light emitted by the light source module can periodically irradiate different areas of the film module, irradiation time of a single area in the film module is reduced, and fading speed of the single area in the film module is delayed, so that service life of the film module is integrally prolonged.

Description

Projection imaging device and lamp

Technical Field

The utility model relates to the technical field of projection imaging, in particular to a projection imaging device and a lamp.

Background

When the existing starry sky lamp presents a starry sky image, a technical scheme of irradiating a rotatable film by laser is often adopted, so that a projection picture of starry sky rotation is presented. However, the film is always in high temperature and strong light irradiation environment, so that the film is fast in fading and short in service life.

Disclosure of Invention

The utility model provides a projection imaging device and a lamp.

According to a first aspect of the present utility model, the present utility model provides a projection imaging apparatus, including a fixed bracket, a light source module, a movable bracket, a film module, and a driving mechanism. The light source module is fixedly arranged on the fixed support, the movable support is movably connected to the fixed support, the film module is arranged on the movable support and arranged on a light path of the light source module, light rays emitted by the light source module can penetrate through the film module to exit, the driving mechanism is connected to the movable support in a transmission manner and drives the movable support to drive the film module to rotate around a designated rotating shaft, and the rotating shaft is not coincident with an optical axis of the light source module.

In some embodiments, the film module includes a film, the film is provided with a plurality of light-transmitting areas, the plurality of light-transmitting areas are circumferentially arranged on the periphery of the rotating shaft, and the light of the light source module covers the light-transmitting areas when penetrating through the film.

In some embodiments, each light-transmitting region is provided with a corresponding pattern, and the patterns of at least two light-transmitting regions in the plurality of light-transmitting regions are different.

In some embodiments, the film module further includes a first light-transmitting plate and a second light-transmitting plate, the first light-transmitting plate and the second light-transmitting plate are both mounted on the movable support, the first mounting plate and the second mounting plate are stacked relatively, and the film is disposed between the first light-transmitting plate and the second light-transmitting plate.

In some embodiments, the movable bracket comprises a sliding part and a driven part, wherein the sliding part is slidably connected with the fixed bracket, and the driven part is rotatably arranged on the sliding part and is in transmission connection with the driving mechanism; the film module is arranged on the driven piece and can be relatively close to or far away from the light path of the light source module under the drive of the sliding piece.

In some embodiments, the movable bracket further includes a limiting member connected to the sliding member and partially disposed at an opposite interval from the sliding member to form a receiving space, and the driven member is rotatably disposed in the receiving space.

In some embodiments, the slider includes a mounting portion and a bracket portion connected to the mounting portion, the mounting portion having a through hole, the through hole being located on the optical path; the driven piece and the film module are arranged in the through hole; the bracket part is in sliding fit with the fixed bracket through a guide rail and a guide groove structure.

In some embodiments, the movable support comprises a driven member, the driving mechanism comprises a driving member and a transmission assembly, the transmission assembly is connected between the driving member and the driven member, and the transmission assembly can drive the driven member to rotate under the driving of the driving member.

In some embodiments, the driven member includes a body portion and a gear ring, the body portion is provided with a light hole, and the light hole is located on the light path, and the film module is arranged in the light hole; the gear ring is circumferentially arranged on the periphery of the body part, and the transmission assembly comprises at least one transmission gear which is connected with the output shaft of the driving piece in a transmission way and meshed with the gear ring.

In some embodiments, the light source module includes a light emitting unit, a lens barrel, and a lens assembly, the lens barrel is connected to the fixing bracket, the light emitting unit is disposed at one end of the lens barrel, and the lens assembly is disposed on an optical path of the light emitting unit and is located in the lens barrel.

In some embodiments, the lens assembly includes a condensing convex lens and a total reflection condensing lens, and the condensing convex lens and the total reflection condensing lens are sequentially arranged on the light path of the light emitting unit; or the lens component comprises two condensing convex lenses which are sequentially arranged on the light path of the light-emitting unit.

In some embodiments, the light source module further includes a heat sink and a substrate, the heat sink is connected to the fixing support, the light emitting unit is disposed on the substrate, and the substrate is stacked on the heat sink.

According to a second aspect of the present utility model, an embodiment of the present utility model provides a light fixture, including a circuit board and the projection imaging apparatus of any one of the above. The projection imaging device is electrically connected with the circuit board.

The utility model provides a projection imaging device and a lamp. The movable support is movably connected to the fixed support, the film module is arranged on the movable support and arranged on the light path of the light source module, so that the film module can be driven by the movable support to approach or be far away from the light path of the light source module. Light emitted by the light source module can penetrate through the film module and exit to the imaging surface. The driving mechanism is connected with the movable support in a transmission way and drives the movable support to drive the film module to rotate around the appointed rotating shaft. Further, the rotation axis is not coincident with the optical axis of the light source module, and along with the rotation of the film module, the light emitted by the light source module can periodically irradiate different areas of the film module, so that the irradiation time of a single area in the film module is reduced, the fading speed of the single area in the film module is delayed, and the service life of the film module is prolonged as a whole.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a projection imaging apparatus according to some embodiments of the present utility model.

Fig. 2 is an exploded view of the projection imaging apparatus shown in fig. 1.

Fig. 3 is an exploded view of the fixed bracket, the movable bracket, and the film module of the projection imaging apparatus shown in fig. 1.

Fig. 4 is a schematic structural view of the fixed bracket, the movable bracket and another view angle of the film module shown in fig. 3.

Fig. 5 is a schematic perspective sectional view of the projection imaging apparatus shown in fig. 1.

Fig. 6 is a schematic view of another configuration of a film module and a driving mechanism of the projection imaging apparatus shown in fig. 1.

Fig. 7 is a schematic view of the projection imaging apparatus shown in fig. 1 with the second bracket omitted.

Fig. 8 is a schematic structural diagram of a lamp according to an embodiment of the present utility model.

Detailed Description

In order to enable those skilled in the art to better understand the present utility model, the following description will make clear and complete descriptions of the technical solutions according to the embodiments of the present utility model with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As a particular component is referred to by some of the terms used in the description and claims, it should be understood by those skilled in the art that a hardware manufacturer may refer to the same component by different terms. The description and claims do not take the difference in name as a way of distinguishing between components, but rather take the difference in functionality of the components as a criterion for distinguishing. As used throughout the specification and claims, the word "comprise" and "comprises" are to be construed as "including, but not limited to"; by "substantially" is meant that a person skilled in the art can solve the technical problem within a certain error range, essentially achieving the technical effect.

The milling device according to the utility model will be further elucidated with reference to the embodiments described hereinafter and with reference to the accompanying drawings.

Referring to fig. 1 to 2, an embodiment of the present utility model provides a projection imaging apparatus 100. The projection imaging apparatus 100 may be applied to a projection lamp, which is a lamp for projecting a specified pattern to an imaging surface (e.g., a ground, a wall, a ceiling, etc. light-reflective portion). Depending on the pattern specified, the projection lamp may include a LOGO projection lamp, an advertising projection lamp, a star field projection lamp, and the like.

In this embodiment, the projection imaging apparatus 100 includes a fixed bracket 10, a light source module 30, a movable bracket 50, a film module 70, and a driving mechanism 90. The light source module 30 is fixedly disposed on the fixing support 10, and the light source module 30 is used for generating emergent light. The movable bracket 50 is movably connected to the fixed bracket 10, and the film module 70 is mounted on the movable bracket 50 and is disposed on the light path of the light source module 30, so as to be capable of approaching to or separating from the light path of the light source module 30 under the driving of the movable bracket 50. The light emitted from the light source module 30 can penetrate through the film module 70 and exit to the imaging surface. The driving mechanism 90 is connected to the movable support 50 in a transmission manner, and drives the film module 70 to rotate around a designated rotation axis O through the movable support 50. Further, the rotation axis O is not coincident with the optical axis Q of the light source module 30, and along with the rotation of the film module 70, the light emitted by the light source module 30 can periodically irradiate different areas of the film module 70, so that the irradiation duration of a single area in the film module 70 is reduced, and the fading speed of the single area in the film module 70 is delayed, thereby integrally prolonging the service life of the film module 70.

Referring to fig. 3 to 4, in the present embodiment, the fixing bracket 10 includes a first bracket 12. The first bracket 12 is substantially plate-shaped, and the first bracket 12 is used for supporting the light source module 30, the driving mechanism 90, and other structures of the projection imaging apparatus 100. In this embodiment, the first bracket 12 includes a mounting plate 121 and a plurality of mounting members disposed on the mounting plate 121, and the plurality of mounting members may include a first mounting member 123 and a second mounting member 125. The first mounting member 123 is disposed at a substantially middle position of the mounting plate 121, and in this embodiment, the first mounting member 123 is substantially cylindrical and penetrates the mounting plate 121. Specifically, the first mounting member 123 has opposite first and second sections 1231 and 1233, and the first and second sections 1231 and 1233 protrude with respect to both side surfaces of the mounting plate 121, respectively. The first mounting member 123 is provided with a first mounting cavity 1235, the first mounting cavity 1235 penetrates through two opposite ends of the first mounting member 123, so that the first mounting member 123 forms a hollow cylindrical structure, and the first mounting cavity 1235 is used for mounting part of the structure of the light source module 30. The second mounting member 125 is disposed on the mounting plate 121 and located on one side of the first mounting member 123. In the present embodiment, the second mounting member 125 is substantially cylindrical, and the second mounting member 125 protrudes with respect to one side surface of the mounting plate 121. The second mounting member 125 is provided with a second mounting chamber 1251, the second mounting chamber 1251 extending through the second mounting member 125, the second mounting chamber 1251 being adapted to mount the driving mechanism 90.

Further, the first bracket 12 may further include a third mounting member 127, where the third mounting member 127 is disposed on the mounting plate 121 and located on a side of the first mounting member 123 away from the second mounting member 125. The third mounting member 127 protrudes with respect to the mounting plate 121 and the protruding direction of the third mounting member 127 is the same as the protruding direction of the first segment 1231, and the third mounting member 127 is used for mounting the movable bracket 50.

Referring to fig. 1 to 2 again, in the present embodiment, the fixing support 10 may further include a second support 14, where the second support 14 is spaced apart from the first support 12 to form a receiving space 16, and the receiving space 16 is used for receiving the film module 70 and other structures of the projection imaging apparatus 100. The second bracket 14 is provided with a support member 141, the support member 141 being substantially cylindrical, the support member 141 being provided at a substantially middle position of the second bracket 14, and the support member 141 being provided substantially coaxially with the first mounting member 123. The supporting member 141 protrudes away from the first bracket 12 relative to the second bracket 14, and the supporting member 141 is provided with a cavity 1411, and the cavity 1411 is used for accommodating part of the structure of the light source module 30.

Referring to fig. 5, in the present embodiment, the light source module 30 includes a light emitting unit 32, a lens barrel 34, and a lens assembly 36. A lens barrel 34 is attached to the fixed mount 10, the lens barrel 34 for housing a lens assembly 36. In particular, in the present embodiment, the lens barrel 34 is connected with the second segment 1233 in succession, for example, the lens barrel 34 is connected to a side of the second segment 1233 remote from the first segment 1231. The lens barrel 34 is provided with an inner cavity 341 extending through one end of the lens barrel 34 and communicating with a first mounting cavity 1235, the inner cavity 341 being adapted to receive the lens assembly 36.

In the present embodiment, the light emitting unit 32 is disposed at one end of the lens barrel 34, and the light emitting unit 32 is used for generating outgoing light. In particular, in the present embodiment, the light emitting unit 32 may be disposed within the interior cavity 341, it being understood that in other embodiments, the light emitting unit 32 may be disposed outside of the lens barrel 34, for example, the light emitting unit 32 is attached to the base plate 37 on a side of the lens barrel 34 remote from the second segment 1233. The light emitting unit 32 may be a laser generator, i.e. the emitted light is laser light. Specifically, the light emitting unit 32 may be a single wavelength laser generator, for example, the light emitting unit 32 may be a green laser generator having a wavelength of 532nm, a red laser generator having a wavelength of 630nm, or the like. The light emitting unit 32 may also be a tunable broad spectrum laser generator that can generate and emit laser light of a specified wavelength.

In the present embodiment, the lens assembly 36 is disposed on the light path of the light emitting unit 32 and is located in the lens barrel 34, and the light emitted by the light emitting unit 32 is converged and adjusted by the lens assembly 36, so as to uniformly illuminate the area corresponding to the light path in the film module 70. In the present embodiment, the lens assembly 36 includes a condensing convex lens 361 and a total reflection condensing lens 363, and the condensing convex lens 361 and the total reflection condensing lens 363 are sequentially arranged on the optical path of the light emitting unit 32. In this embodiment, the light-collecting convex lens 361 is disposed in the first mounting cavity 1235, the total-reflection light-collecting lens 363 is disposed in the inner cavity 341, and the light emitted by the light-emitting unit 32 sequentially passes through the total-reflection light-collecting lens 363 and the light-collecting convex lens 361 and irradiates the film module 70, so that the light emitted by the light-emitting unit 32 can be processed more uniformly, and the brightness of the central area and the brightness of the edge area of the light irradiated on the film module 70 are close, so that the brightness of the central area and the brightness of the edge area of the picture projected on the projection surface are close, and the quality of the projected picture is improved. Further, in order to improve the stability of the condensing convex lens 361 in the first mounting cavity 1235, the light source module 30 may further include a pressing plate 35, where the pressing plate 35 is substantially annular, and the pressing plate 35 is connected to the condensing convex lens 361 and sleeved on the first segment 1231 so as to limit the position of the condensing convex lens 361 relative to the first segment 1231.

It should be understood that the utility model is not limited to the type of lens in the lens assembly 36, and in other embodiments, the lens assembly 36 may include two condensing lenses, which are sequentially disposed on the light path of the light emitting unit 32. Specifically, one condensing convex lens is disposed in the first mounting cavity 1235, the other condensing convex lens is disposed in the inner cavity 341, and the light emitted by the light emitting unit 32 sequentially passes through the two condensing convex lenses and irradiates on the film module 70.

In the present embodiment, the light source module 30 further includes a heat sink 38, the heat sink 38 is connected to the fixing bracket 10, and the heat sink 38 communicates the space where the light emitting unit 32 is located with the outside. In this embodiment, the heat sink 38 is connected to the side of the lens barrel 34 away from the second segment 1233 and is disposed adjacent to the light emitting unit 32, and the heat sink 38 is used to discharge the heat generated by the light emitting unit 32 from the inner cavity 341, so as to improve the service life of the projection imaging apparatus. The present utility model is not limited to the type and shape of the heat sink 38, for example, in the present embodiment, the heat sink 38 is a circular dense-tooth heat sink; as another example, in other embodiments, the heat sink 38 may be a rectangular heat dissipating fan.

In the present embodiment, the light source module 30 may further include a substrate 37, the substrate 37 being stacked on the heat sink 38 and located between the lens barrel 34 and the heat sink 38, the substrate 37 being used for mounting the light emitting unit 32.

In this embodiment, the light source module 30 further includes a lens 39, the lens 39 is disposed on a side of the film module 70 facing away from the lens assembly 36, specifically, the lens 39 may be disposed in the cavity 1411 of the supporting member 141, and the light emitted by the light emitting unit 32 is projected onto the projection surface through the lens 39 after passing through the lens assembly 36 and the film module 70 in sequence. The lens 39 may include at least one lens, and the specific structure of the lens 39 is not specifically limited in the present specification.

Referring to fig. 3 to 4 again, in the present embodiment, the movable bracket 50 includes a sliding member 52 and a driven member 54, the sliding member 52 is slidably connected to the fixed bracket 10, and the sliding member 52 can drive the film module 70 relatively close to or far from the light path of the light source module 30.

Specifically, in the present embodiment, the slider 52 is stacked on the third mount 127 and is capable of sliding with respect to the third mount 127. The slider 52 includes a mounting portion 521 and a bracket portion 523 connected to the mounting portion 521. The mounting portion 521 is used for mounting the follower 54 and the film module 70. Specifically, the mounting portion 521 is provided with a through hole 5211, the through hole 5211 is located on the optical path of the light source module 30, and the through hole 5211 is used for accommodating the film module 70. The bracket portion 523 is substantially plate-shaped, and the bracket portion 523 is stacked on the third mounting member 127 and can slide relative to the third mounting member 127, so that the mounting portion 521 drives the film module 70 to be relatively close to or far away from the light path of the light source module 30, thereby facilitating replacement of the film module 70.

In the present embodiment, the bracket portion 523 and the fixing bracket 10 are slidably engaged with each other through a guide rail and a guide groove structure. In particular, in the present embodiment, the side of the bracket portion 523 near the third mounting member 127 is provided with a guide rail structure 5231, and the side of the third mounting member 127 near the bracket portion 523 is provided with a guide groove structure 1271, and the guide rail structure 5231 is disposed corresponding to the guide groove structure 1271, and the guide rail structure 5231 is at least partially embedded in the guide groove structure 1271 and is capable of sliding along the direction defined by the guide groove structure 1271. The number of the guide rail structures 5231 is not limited in the present utility model, for example, in the present embodiment, the number of the guide rail structures 5231 may be two, the two guide rail structures 5231 are relatively disposed at the bracket portion 523 at intervals, and correspondingly, the number of the guide groove structures 1271 is also two, and the two guide groove structures 1271 respectively correspond to the two guide rail structures 5231, so as to improve the sliding stability of the bracket portion 523 relative to the third mounting member 127.

Further, the bracket portion 523 may further be provided with two sliding rails 5233, the number of the sliding rails 5233 may be two, the two sliding rails 5233 are respectively disposed on two opposite sides of the bracket portion 523, correspondingly, the third mounting member 127 is provided with a sliding groove 1273, the direction defined by the sliding groove 1273 is the same as the direction defined by the guiding groove structure 1271, the number of the sliding grooves 1273 is also two, and the two sliding grooves 1273 are respectively disposed on two opposite sides of the third mounting member 127 and correspond to the two sliding rails 5233. The slide rails 5233 are at least partially embedded in the slide slots 1273 and are capable of sliding in a direction defined by the slide slots 1273.

In this embodiment, in order to limit the sliding position of the bracket portion 523 relative to the third mounting member 127, the bracket portion 523 is further provided with positioning grooves 5235, the positioning grooves 5235 are disposed on one side of the slide rail 5233 near the mounting portion 521, the number of the positioning grooves 5235 may be two, and the two positioning grooves 5235 are divided to be located on opposite sides of the bracket portion 523. Correspondingly, the third mounting member 127 is provided with positioning protrusions 1275, the positioning protrusions 1275 are corresponding to the positioning grooves 5235, and the number of the positioning protrusions 1275 can be two. When the bracket portion 523 is slid to the limit position with respect to the third mounting member 127, the positioning protrusion 1275 is at least partially embedded in the positioning groove 5235 to limit the position of the bracket portion 523 with respect to the third mounting member 127.

In this embodiment, the movable bracket 50 may further include a stopper 56, where the stopper 56 is connected to the slider 52 and is partially disposed opposite to the slider 52 at a distance to form a receiving space 55 (as shown in fig. 2), and the receiving space 55 communicates with the through hole 5211, and the receiving space 55 is used for receiving the follower 54. In particular, in the present embodiment, the limiting member 56 is substantially annular, the side of the limiting member 56 near the mounting portion 521 is provided with a fastening structure 561, the side of the mounting portion 521 near the limiting member 56 is provided with a clamping groove structure 5213, the clamping groove structure 5213 is disposed around the outside of the through hole 5211 and corresponds to the fastening structure 561, and the fastening structure 561 is at least partially embedded in the clamping groove structure 5213, so that the connection between the limiting member 56 and the mounting portion 521 is more stable.

In this embodiment, the follower 54 is rotatably disposed on the slider 52 and is in driving connection with the driving mechanism 90, and the follower 54 can rotate along the rotation axis O under the driving of the driving mechanism 90. In this embodiment, the follower 54 is rotatably disposed in the accommodating space 55. The follower 54 includes a main body 541 and a gear ring 543, where the main body 541 has a light hole 5411, and the light hole 5411 is substantially coaxially connected to the through hole 5211, so that the light hole 5411 is located on the optical path of the light source module 30. The ring gear 543 is provided around the outer periphery of the main body 541, and the ring gear 543 is capable of cooperating with a part of the structure of the driving mechanism 90 so as to be rotatable by the driving mechanism 90.

In this embodiment, the film module 70 is disposed in the through hole 5211, and the film module 70 is used for generating light carrying image information. In this embodiment, the film module 70 is mounted on the driven member 54, and the film module 70 can be relatively close to or far away from the light path of the light source module 30 under the driving of the sliding member 52. In the present embodiment, when the slider 52 slides relative to the third mounting member 127, the film module 70 and the follower 54 relatively approach or separate from the light source module 30 along the direction of the rail structure 5231, wherein the direction of the rail structure 5231 is substantially perpendicular to the light path direction of the light source module 30. Further, the film module 70 may be removed and placed by a sliding member, so that the film module can be replaced in time after the film 72 is discolored.

In this embodiment, the film module 70 includes a film 72, where the film 72 is substantially circular, and the film 72 is driven by the follower 54 to make a circular track about the rotation axis O. The film 72 is provided with a plurality of light-transmitting areas 721, the light-transmitting areas are arranged around the periphery of the rotation axis O, the light-transmitting areas 721 can be covered when the light of the light source module 30 penetrates through the film 72, and as the film 72 rotates around the rotation axis O, the light of the light source module 30 sequentially irradiates different light-transmitting areas 721, so that the irradiation duration of a single area in the film module 70 is reduced, the fading speed of the single area in the film module 70 is delayed, and the service life of the film module 70 is prolonged as a whole. The shape of the film 72 is not limited by the present utility model, for example, in other embodiments, the film 72 may be elliptical (as shown in fig. 6), and the film 72 may move along an elliptical track under the driving of the driven member 54.

Further, each light-transmitting area 721 is provided with a corresponding pattern, the patterns of at least two light-transmitting areas 721 in the plurality of light-transmitting areas are different, the light-transmitting areas 721 appearing on the light path are different along with the rotation of the film 72, and the patterns of the light-transmitting areas 721 are different, so that the picture projected on the projection surface is not changed, and a rich projection effect is formed. It should be understood that the present utility model is not limited to the number of light-transmitting regions 721, for example, the number of light-transmitting regions 721 may be four, six, eight, or the like.

In this embodiment, the film module 70 further includes a first light-transmitting plate 74 and a second light-transmitting plate 76, and the first light-transmitting plate 74 and the second light-transmitting plate 76 are both mounted on the movable bracket 50. Specifically, in the present embodiment, the first light-transmitting plate 74 and the second light-transmitting plate 76 are both connected to the body 541 and located in the through hole 5211, the first light-transmitting plate 74 and the second light-transmitting plate 76 are stacked relatively, the film 72 is disposed between the first light-transmitting plate 74 and the second light-transmitting plate 76, and the first light-transmitting plate 74 and the second light-transmitting plate 76 can support and protect the film 72.

Referring to fig. 7, in the present embodiment, the driving mechanism 90 includes a driving member 92 and a transmission assembly 94, the transmission assembly 94 is connected between the driving member 92 and the driven member 54, and the transmission assembly 94 can drive the driven member 54 to rotate under the driving of the driving member 92. In particular, in the present embodiment, the driving member 92 may include a driving source 921 and a driving gear 923, the driving source 921 being disposed in the second mounting chamber 1251. In this embodiment, the driving source 921 may be a rotational driving source, for example, the driving source 921 may be a rotating motor, a rotating motor with a reduction gearbox, or a rotational driving device such as a rotary steering engine. Further, the driving member 92 has an output shaft 925, and the output shaft 925 penetrates through the driving gear 923 and can drive the driving gear 923 to rotate.

In this embodiment, the transmission assembly 94 includes at least one transmission gear 941, and the at least one transmission gear 941 is drivingly connected to the output shaft 925 of the drive member 92 and is meshed with the ring gear 543. In this embodiment, the transmission assembly 94 includes a plurality of gear sets 943, and the plurality of gear sets 943 are connected between the driving gear 923 and the gear ring 543, and can drive the gear ring 543 to rotate under the driving of the driving gear 923. The present utility model is not limited to the number of gear sets 943, for example, in this embodiment, the number of gear sets 943 is four, and every two gear sets 943 are meshed. Further, each gear set 943 includes a large gear 9431 and a small gear 9433, and the large gear 9431 and the small gear 9433 are coaxially disposed.

In this embodiment, to mount the transmission assembly 94, the first bracket 12 may further include a fourth mounting member 129, the fourth mounting member 129 is disposed on the mounting plate 121 and between the first mounting member 123 and the second mounting member 125, the fourth mounting member 129 protrudes with respect to the mounting plate 121 and the protruding direction of the fourth mounting member 129 is the same as the protruding direction of the second mounting member 125, and the transmission assembly 94 is disposed on the fourth mounting member 129.

It should be appreciated that in some embodiments, the transmission assembly 94 may be omitted and the driver 92 may be directly coupled to the follower 54 for simplicity of construction of the projection imaging apparatus 100. Specifically, the drive gear 923 meshes with the ring gear 543, and the drive gear 923 drives the ring gear 543 to rotate.

Referring to fig. 8, the embodiment of the utility model further provides a lamp 200, where the lamp 200 includes a circuit board 210 and the projection imaging apparatus 100, and the projection imaging apparatus 100 is electrically connected to the circuit board 210.

In this embodiment, the circuit board 210 may include a control module, which may be a control chip. In one aspect, the control module is electrically connected to the driving member 92 for controlling the rotation speed of the driving member 92. In another aspect, the light emitting unit 32 may be a tunable broad spectrum laser generator, and the control module is electrically connected to the broad spectrum laser generator for controlling the broad spectrum laser generator to generate laser light with a specified wavelength.

In this embodiment, the circuit board 210 may further include a power module, which is connected to the light emitting unit 32 and the driving member 92, respectively, for providing the light emitting unit 32 and the driving member 92 with electric energy.

The utility model provides a projection imaging device and a lamp. The movable support is movably connected to the fixed support, the film module is arranged on the movable support and arranged on the light path of the light source module, so that the film module can be driven by the movable support to approach or be far away from the light path of the light source module. Light emitted by the light source module can penetrate through the film module and exit to the imaging surface. The driving mechanism is connected with the movable support in a transmission way and drives the movable support to drive the film module to rotate around the appointed rotating shaft. Further, the rotation axis is not coincident with the optical axis of the light source module, and along with the rotation of the film module, the light emitted by the light source module can periodically irradiate different areas of the film module, so that the irradiation time of a single area in the film module is reduced, the fading speed of the single area in the film module is delayed, and the service life of the film module is prolonged as a whole.

In the description of the present utility model, certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the difference in name as a way of distinguishing between components, but rather take the difference in functionality of the components as a criterion for distinguishing. As used throughout the specification and claims, the word "comprise" and "comprises" are to be construed as "including, but not limited to"; by "substantially" is meant that a person skilled in the art can solve the technical problem within a certain error range, essentially achieving the technical effect.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and the like indicate orientation or positional relationships based on those shown in the drawings, and are merely for convenience of description of the utility model, but do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

In the present utility model, the terms "mounted," "connected," "secured," and the like are to be construed broadly, unless otherwise specifically indicated or defined. For example, the connection can be fixed connection, detachable connection or integral connection; can be mechanically or electrically connected; the connection may be direct, indirect via an intermediate medium, or communication between two elements, or only surface contact. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be appreciated by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A projection imaging apparatus, comprising:

a fixed bracket;

the light source module is fixedly arranged on the fixed bracket;

the movable bracket is movably connected with the fixed bracket;

the film module is arranged on the movable bracket and arranged on a light path of the light source module, and light rays emitted by the light source module can penetrate through the film module and exit; and

the driving mechanism is connected with the movable bracket in a transmission way and drives the movable bracket to drive the film module to rotate around a designated rotating shaft; the rotating shaft is not overlapped with the optical axis of the light source module.

2. The projection imaging apparatus according to claim 1, wherein the film module includes a film, the film is provided with a plurality of light-transmitting areas, the plurality of light-transmitting areas are circumferentially disposed on the outer periphery of the rotation shaft, and the light of the light source module covers the light-transmitting areas when penetrating the film.

3. The projection imaging apparatus of claim 2, wherein the film module further comprises a first light-transmitting plate and a second light-transmitting plate, the first light-transmitting plate and the second light-transmitting plate are both mounted on the movable support, the first light-transmitting plate and the second light-transmitting plate are stacked relatively, and the film is disposed between the first light-transmitting plate and the second light-transmitting plate.

4. The projection imaging apparatus according to claim 1, wherein the movable bracket includes a slider slidably connected to the fixed bracket and a follower rotatably provided to the slider and drivingly connected to the driving mechanism; the film module is arranged on the driven piece and can be relatively close to or far away from the light path of the light source module under the drive of the sliding piece.

5. The projection imaging apparatus of claim 4, wherein the movable bracket further comprises a stopper coupled to the slider and partially disposed in spaced relation to the slider to form a receiving space, the follower rotatably disposed within the receiving space.

6. The projection imaging apparatus according to claim 4, wherein the slider includes a mounting portion provided with a through hole located on the optical path, and a bracket portion connected to the mounting portion; the driven piece and the film module are arranged in the through hole; the support part is in sliding fit with the fixed support through a guide rail and a guide groove structure.

7. The projection imaging apparatus according to claim 1, wherein the movable support comprises a driven member, the driving mechanism comprises a driving member and a transmission assembly, the transmission assembly is connected between the driving member and the driven member, and the transmission assembly can drive the driven member to rotate under the driving of the driving member.

8. The projection imaging apparatus according to claim 7, wherein the follower includes a body portion and a ring gear, the body portion is provided with a light hole, the light hole is located on the optical path, and the film module is disposed in the light hole; the gear ring is circumferentially arranged on the periphery of the body part, and the transmission assembly comprises at least one transmission gear which is connected with the output shaft of the driving piece in a transmission way and meshed with the gear ring.

9. The projection imaging apparatus according to any one of claims 1 to 8, wherein the light source module includes a light emitting unit, a lens barrel, and a lens assembly, the lens barrel being connected to the fixing bracket, the light emitting unit being disposed at one end of the lens barrel, the lens assembly being disposed on an optical path of the light emitting unit and within the lens barrel; the lens assembly comprises a condensing convex lens and a total reflection condensing lens, and the condensing convex lens and the total reflection condensing lens are sequentially arranged on the light path of the light-emitting unit; or (b)

The lens assembly comprises two condensing convex lenses, and the two condensing convex lenses are sequentially arranged on the light path of the light-emitting unit.

10. A light fixture, comprising:

a circuit board; and

the projection imaging apparatus of any of claims 1 to 9, which is electrically connected to the circuit board.