CN116184753A - Meteor sky projection lamp - Google Patents

Abstract

The present invention provides a meteor sky projection lamp, which includes a base and a lamp body arranged on the base, the lamp body includes a casing, and an optical path system arranged in the casing; the optical path system includes a projection optical path system and Meteor optical path system; the top of the housing is provided with an optical path exit, and the optical path exit includes a projection optical path exit and a meteor optical path exit. The meteor sky projection lamp in this application provides transformed star sky projection and meteor projection, and the meteor projection and star sky projection are linked at the same time. The rotating slit gear of the meteor optical path system driven by the driving motor and the projection optical path system gear rotate simultaneously. It creates a gorgeous effect that the moving meteor projection and the starry sky rotate together formed by a long strip of starlight projection.

Description

A Meteor Sky Projector Lamp

technical field

The invention relates to the technical field of atmosphere lamps, in particular to a meteor sky projection lamp with a meteor function and a replaceable star pattern.

Background technique

Star projection lamps generally use projection technology to project patterns of the Milky Way or starry sky on the roof or walls. However, this type of starry sky lamp has a single starry sky pattern and a single projection method, which cannot meet the different viewing needs of users.

There are also some optical devices that produce meteor effects on the market. For example, the invention patent application number CN200620101055.2 discloses a meteor light source machine, which includes an optical fiber connector, a lamp bowl frame, a lamp bowl, a synchronous motor, a light source and a frame. A color wheel is arranged outside the light source, the optical fiber connector is arranged outside the color wheel and corresponds to the light of the light source, and the color wheel is connected with the synchronous motor. Here, the light source may be a light bulb or other illuminants. The color wheel is formed by setting color bars on the cylindrical surface of the transparent acrylic wheel body. This kind of meteor light source machine has a simple structure, and can realize a bundle of optical fibers or multiple bundles of optical fibers with multiple colors alternately and regularly changing at the same time on the premise that the effect produced by the original light source machine remains unchanged, and the end points of the optical fibers are dotted on the inkjet night scene. , you can create a simulation effect of meteors across the sky, which is not available in general light source machines. However, this meteor light source machine needs to use mechanisms such as color wheels and optical fibers to assist in its realization.

At present, there is no ambient lamp that can display starry sky patterns and meteor effects in conjunction, and the two effects can interact.

Contents of the invention

The main purpose of the present invention is to provide a new shooting star projection lamp with meteor function and replaceable star pattern, which has a simpler structure and more realistic effect.

In order to achieve the above object, the present invention provides a meteor sky projection lamp. The meteor sky projection lamp includes a base and a lamp body arranged on the base. The lamp body includes a housing and an optical path arranged in the housing System; characterized in that, the optical path system includes a projection optical path system and a meteor optical path system; an optical path exit is provided on the top of the housing, and the optical path exit includes a projection optical path exit and a meteor optical path exit;

The projection optical path system includes a first light source, a first projection assembly, and a first imaging assembly from bottom to top; the projection assembly includes a tray assembly detachably arranged on the housing, and the tray assembly is detachable The projection sheet is fixed, and the position of the projection sheet is correspondingly arranged on the optical path between the light source and the first imaging assembly. The light emitted by the light source passes through the projection sheet and is then imaged by the first imaging assembly. After the component is imaged, it is projected to the outside through the exit of the projection light path;

The meteor optical path system includes a second light source, a second imaging component, and a second projection component arranged between the second light source and the second imaging component; the second projection component includes a A fixed slit plate below the imaging assembly and fixedly connected to the second imaging assembly, and a rotating slit assembly arranged between the fixed slit plate and the second light source; wherein, the fixed slit plate There is at least one first slit; the rotating slit assembly includes a rotating slit gear, the central axis of the rotating slit gear is located on the side of the first slit, and the rotating slit gear is provided with At least one second slit groove arranged radially along the rotating slit gear, the second slit groove runs through the thickness direction of the rotating slit gear; the first slit and the second slit The slots have different widths;

The optical path system also includes a driving motor, the output shaft of the driving motor is coaxially provided with a first driving gear and a second driving gear; the first driving gear meshes with the rotating slit gear to drive the The rotating slit gear rotates; the tray assembly includes a tray, a rotatable gear disposed on the tray, and a projection film fixed on the gear; a gap is opened on the tray, and the gear is rotatably fixed on the upper surface of the tray, and the rack part of the gear is exposed at the notch; the second driving gear is meshed with the rack of the gear exposed at the notch to drive the The gear turns.

Further, an opening is opened on the top of the housing, a fixing plate is installed on the opening, a center hole is opened in the center of the fixing plate, and the first imaging component is installed in the center hole of the fixing plate above, the central hole is the exit of the projection light path; the edge of the fixed plate is provided with a side hole, and the side hole is the exit of the meteor light path.

Further, the housing includes an upper housing, a lower housing and an inner bracket; the upper housing and the lower housing are hemispherical, and the upper housing and the lower housing are spliced together to form a hollow A sphere, the inner bracket is fixed to the lower casing, and is used to support the components of the optical path system;

Wherein, the inner support includes a lower support plate and an upper support plate; the lower support plate is fixed to the inner wall of the lower casing, and a second support plate is formed between the lower support plate and the inner bottom surface of the lower casing. A space, the first space is used to install the first component of the optical path system; the upper support plate is connected to the upper casing through the upper boss arranged on the upper surface, and the lower support plate is arranged on the lower surface The boss is connected to the lower case, and a second space is formed between the upper support plate and the lower support plate for installing the second component of the optical path system; the upper support plate is connected to the upper case A third space is formed between the tops of the bodies for installing a third component of the optical path system.

Further, heat dissipation holes are opened on the upper case and/or the lower case.

Further, the meteor light path also includes:

an inner sleeve, the inner sleeve is a hollow columnar structure with openings at both ends, the second imaging component is fixed on the top end of the inner sleeve, the bottom end of the inner sleeve is fixed with the fixed slit plate, The first slit is opened on the fixed slit plate;

A fixed plate, the fixed plate is provided with a shaft hole and a fixed hole, the fixed plate is fixedly connected with the upper convex post on the upper surface of the upper support plate through the fixed hole, and the rotating slit gear passes through the The shaft hole is rotatably connected to the fixed plate;

The light source is fixedly connected to the lower convex column on the lower surface of the upper support plate, and is arranged below the first slit and the rotating slit gear, and the corresponding light pass is arranged on the upper support plate. hole;

The rotating slit assembly further includes a driving motor, which is drivingly connected to the rotating slit gear to drive the rotating slit gear to rotate.

Further, it also includes an outer sleeve, the outer sleeve has a hollow cylindrical structure, the bottom of the outer sleeve is open, and the inner sleeve is inserted from the bottom end of the outer sleeve and accommodated in the In the outer sleeve, the top of the outer sleeve is provided with an optical path opening and a blocking edge, the optical path opening allows light to pass through, and the blocking edge is used to prevent the inner sleeve from detaching from the top; the fixing The size of the slit plate is larger than the size of the inner sleeve; a flange is provided on the outer wall of the outer sleeve, and a through hole is opened on the flange; A fixed column with paired holes, through which a screw passes through the through hole and is fixed on the fixed column, so as to fix the outer sleeve on the fixed plate;

The fixing plate is arranged between the outer sleeve and the rotating slit gear, and a receiving groove for accommodating the fixing slit plate is opened on a side of the fixing plate close to the outer sleeve, The bottom of the accommodating groove is also provided with an optical path opening, and the first slit is disposed facing the optical path opening.

Further, the handle end of the tray assembly is connected with a blocking wall for matching with the casing of the meteor sky projection lamp, so as to cover the body of the tray after the tray is inserted into the casing; the blocking wall There is also a handle on the outside; the handle is spherical.

Further, the number of the second slits is 3, the 3 second slits are evenly arranged along the circumferential direction, and the angle between two adjacent second slits is 120 degrees.

Further, the meteor sky projection lamp also includes an arc-shaped suspension bracket; the bottom end of the suspension bracket is connected to the base, and the top end is connected to the housing, and the lamp body is suspended on the suspension bracket One side of the inner arc surface and above the base; a main control circuit module is arranged in the base, and the main control circuit module is electrically connected to the optical system through a cable.

Further, the interior of the suspension bracket is hollow for laying the cables; the bottom end of the suspension bracket is rotatably mounted on the base, and the bottom end is provided with a lower cable opening. The lower wire opening communicates with the inside of the base; the top end of the suspension bracket is rotatably mounted on the housing, and the top end is provided with an upper wire opening, and the upper wire opening is connected to the shell The interior of the body is connected; the bottom end of the suspension bracket is connected to the base through a first rotating pair, the first axis of the first rotating pair is set along the vertical direction, and the center of the lower line opening is connected to the The first axis coincides, so that the lamp body and the suspension bracket are rotatably arranged on the base around the first axis; the top end of the suspension bracket and the housing pass through The second rotating pair is connected, the second axis of the second rotating pair is set along the horizontal direction, and the center of the upper line opening coincides with the second axis, so that the lamp body is in contact with the floating The bracket is rotatably arranged around the second axis.

The meteor sky projection lamp in this application provides transformed star sky projection and meteor projection, and the meteor projection and star sky projection are linked at the same time, and the rotating slit gear of the meteor optical path system and the projection optical path system gear are rotated simultaneously by driving the motor, It creates a gorgeous effect that the moving meteor projection and the starry sky rotate together formed by a long strip of starlight projection.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative effort.

Fig. 1 is a three-dimensional structural schematic diagram of a meteor sky projection lamp in an embodiment of the present invention;

Fig. 2 is a schematic diagram of a disassembled structure of a viewing angle of the base, suspension bracket and lamp body of the meteor projection lamp in Fig. 1;

Fig. 3 is a disassembled structure schematic diagram of another viewing angle of the base, the suspension bracket and the lamp body of the meteor sky projection lamp in Fig. 1;

Fig. 4 is a schematic diagram of a dismantling structure of the meteor sky projection lamp in Fig. 1;

Fig. 5 is a schematic dismantling structure diagram of another viewing angle of the meteor sky projection lamp in Fig. 1;

Fig. 6 is a schematic dismantling structure diagram of another viewing angle of the meteor sky projection lamp in Fig. 1;

Fig. 7 is a schematic diagram of the assembly structure of the optical path system of the meteor sky projection lamp in Fig. 1;

Fig. 8 is a schematic structural diagram of the tray assembly of the meteor sky projection lamp in Fig. 1;

Fig. 9 is a schematic diagram of a disassembled structure of the tray assembly in Fig. 8;

Fig. 10 is a structural schematic diagram of the meteor light path system of the meteor sky projection lamp in Fig. 1;

Fig. 11 is a schematic cross-sectional structure diagram of the meteor optical path system in Fig. 10;

Fig. 12 is a schematic diagram of a disassembled structure of the meteor optical path system in Fig. 10;

The realization of the purpose, function and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Implementation

The technical solution in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings in this embodiment. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in this embodiment are only used to explain the relative relationship between the components in a certain posture (as shown in the figure). When the positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

In the present invention, unless otherwise specified and limited, the terms "connected", "fixed" and the like should be interpreted in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be two components An internal communication or interaction relationship between two elements, unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In addition, the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered as a combination of technical solutions. Does not exist, nor is it within the scope of protection required by the present invention.

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Please refer to Figures 1 to 12, which is a schematic structural view of a meteor sky projection lamp 100 provided in an embodiment of the present invention, including a base 200 and a lamp body 300 arranged on the base 200, the lamp body 300 It includes a casing 301 and an optical path system arranged in the casing 301 .

In particular, it should be noted that electronic components such as circuit boards that are the same as those in the prior art are not shown in the figure.

Wherein, electronic circuit components such as the main control circuit module and the power supply module of the meteor sky projection lamp 100 are not specifically limited or described in this application document. Those skilled in the art can use central processing unit (CPU), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or Complex Programmable Logic Device (Complex Programmable Logic Device, CPLD), etc. Those skilled in the art can set the specification, location, and power supply mode of the power supply module as required. Each power consumption module can be directly connected to the power supply module, or can be switched through the power supply circuit of the main control circuit module. The installation positions of electronic circuit components such as the main control circuit module and power supply module can be set according to needs. The circuit components are arranged in the lamp body, and the main control circuit module is electrically connected with the optical system through cables.

In the specific embodiment, the technical features that solve the technical problems that the present invention actually intends to solve are mainly explained, and some contents related to the meteor sky light overlap with the prior art, and those skilled in the art can select according to the needs, such as the main The control circuit module is equipped with WiFi or 4G/5G communication unit to realize the data transmission between the main control circuit module and the outside, by adding GPS or Beidou unit to the main control circuit module to realize position positioning, etc. Description; but it does not mean that the technical solution of the main control circuit module in the present invention is incomplete.

Please refer to Figures 1-6, the meteor sky projection lamp also includes an arc-shaped suspension bracket 400; the bottom end of the suspension bracket 400 is connected to the base 200, and the top end is connected to the housing 301. The body 300 is suspended on one side of the inner arc surface of the suspension bracket 400 and is located above the base 200; the base 200 is provided with a main control circuit module, and the main control circuit module and the optical system Electrically connected through cables; the top of the housing 301 is provided with an optical path outlet. In this embodiment, the suspension effect of the lamp body 300 is formed by setting the arc-shaped suspension bracket 400 .

In a preferred embodiment, the interior of the suspension bracket 400 is hollow for laying the cables; the bottom end of the suspension bracket 400 is rotatably mounted on the base 200, and the bottom end opens There is a lower cable opening 401, which communicates with the inside of the base 200; the top end of the suspension bracket 400 is rotatably mounted on the housing 301, and the upper end is provided with an upper The wire opening 402 , the upper wire passage opening 402 communicates with the inside of the housing 301 .

Wherein, further, the bottom end of the suspension bracket 400 is connected to the base 200 through the first rotating pair 41, and the first axis 411 of the first rotating pair 41 is set along the vertical direction, and the The center of the lower cable opening 401 coincides with the first axis 411, so that the lamp body 300 and the suspension bracket 400 are rotatably arranged on the base 200 around the first axis 411; wherein , the first rotating pair 41 may include a protruding shaft protruding from the bottom end of the suspension bracket 400, and a shaft hole arranged on the top of the base 200; the bottom surface of the shaft hole is opened to communicate with the lower passing line port 401.

The top of the suspension bracket 400 is connected to the housing 301 through the second rotating pair 42, the second axis 421 of the second rotating pair 42 is arranged along the horizontal direction, and the center of the upper wire opening 402 coincides with the second axis 421 , so that the lamp body 300 is rotatably arranged on the suspension bracket 400 around the second axis 421 . The rotation of the lamp body around the vertical axis and the rotation around the horizontal axis can be realized through the above arrangement. Preferably, the connection position between the top of the suspension bracket 400 and the housing 301 is located in the middle of the housing 301 .

The meteor sky projection lamp 100 in this application is equipped with a projection light path system 500 and a meteor light path system 600, and can provide transformed star sky projection and meteor projection at the same time, and the meteor projection and star sky projection are simultaneously linked, specifically realized through the following structure.

Specifically, the optical path exit includes a projection optical path exit 501 and a meteor optical path exit 601 .

The projection optical system 500 includes a first light source 51, a first projection assembly 52, and a first imaging assembly 53 from bottom to top; the projection assembly 52 includes a tray assembly 521 detachably arranged on the housing 301, A projection sheet 522 is detachably fixed on the tray assembly 521, and the position of the projection sheet 522 is correspondingly arranged on the optical path between the light source 51 and the first imaging assembly 53, and the first light source 51 emits The light passes through the projection sheet 522, is imaged by the first imaging component 53 and then projected to the outside through the projection light path exit 501, thereby forming a starry sky projection.

Please combine Figures 3-6 and Figures 10-12, the meteor optical path system 600 includes a second light source 61, a second imaging component 63, and is arranged between the second light source 61 and the second imaging component 63 The second projection assembly; the second projection assembly includes a fixed slit plate 621 arranged below the second imaging assembly 63 and fixedly connected with the second imaging assembly 63, and arranged on the fixed slit plate 621 and the rotating slit assembly between the second light source 61; wherein, at least one first slit 623 is opened on the fixed slit plate 621; the rotating slit assembly includes a rotating slit gear 624, the The central axis of the rotating slit gear 624 is located on the side of the first slit 623, and the rotating slit gear 624 is provided with at least one second slit arranged in the radial direction of the rotating slit gear 624 Groove 625, the second slit groove 625 runs through the thickness direction of the rotating slit gear 624; the width of the first slit 623 and the second slit groove 625 are different;

The optical path system also includes a driving motor 320, the output shaft of the driving motor 320 is coaxially provided with a first driving gear 321 and a second driving gear 322; the first driving gear 321 and the rotating slit gear 624 Engage to drive the rotating slit gear 624 to rotate.

Please combine with Figures 7-9, the tray assembly 521 includes a tray 5201, a rotatable gear 5202 mounted on the tray 5201 and a projection film 522 fixed on the gear 5202; There is a gap 5203, the gear 5202 is rotatably fixed on the upper surface of the tray 5201, and the rack part of the gear 5202 is exposed at the gap 5203; the second driving gear 322 and the exposed The rack of the gear 5202 at the notch 5203 is engaged to drive the gear 5202 to rotate.

When the meteor sky projection lamp 100 is working, the rotating slit gear 624 and the gear 5202 can rotate simultaneously through the driving of the driving motor 320 .

Under the rotation of the rotating slit gear 624, until the second slit groove 625 periodically moves above the second light source 61, the light emitted by the second light source 61 passes through the first The second slit 625 and the first slit 623 are projected to the outside through the lens of the second imaging assembly 63 to form a long starlight projection. As the second slit 625 continues around the central axis, Rotate, so that the overlapping portion of the second slit groove 625 and the first slit 623 moves along the first slit 623, and the strip-shaped starlight projection will also move, thereby forming the effect of a moving meteor projection . Wherein, the second light source 61 can be an LED light source, a laser light source, etc., and the color can also be set as required. In addition, by adjusting the rotating speed of the driving motor 320 and the design of the gear transmission ratio, the speed ratio of the rotating slit gear 624 can be adjusted to determine the speed at which the meteor crosses, and multiple slits can be added on the rotating slit gear 624, and the gear can turn around once. Get multiple shooting stars.

At the same time, under the rotation of the gear 5202 , the projection sheet 522 rotates, so that the starry sky projected by the projection optical system 500 also rotates. Finally, a long strip of starlight projection formed by the moving meteor projection and the starry sky co-rotating gorgeous effect.

Further, please refer to Fig. 4-7 again, in this embodiment, the housing 301 includes an upper housing 311, a lower housing 312 and an inner bracket 313; wherein, the upper housing 311 and the lower housing The body 312 is hemispherical, the upper housing 311 and the lower housing 312 are spliced together to form a hollow sphere, and the inner bracket 313 is fixed with the lower housing 312 to support the components of the optical path system .

The top of the upper housing 311 is provided with an opening (not numbered in the figure), on which a fixing plate 3111 is installed, and a central hole 3112 is opened in the center of the fixing plate 3111, and the first imaging component 53 is installed on the Above the central hole 3112 of the fixed plate 3111, the central hole 3112 is the exit 501 of the projection light path; the edge of the fixed plate 3111 is provided with a side hole 3113, and the side hole 3113 is the exit of the meteor light path 601. Those skilled in the art should know that due to the difference in the distance of the projected wall or ceiling, the imaging lens needs to be adjusted. The first imaging component 53 can be set as a lens group with adjustable aperture and/or focal length, and the projection effect can be adjusted by rotation. Here, it is repeated with the prior art, and will not be repeated here.

Preferably, in this embodiment, the inner bracket 313 includes a lower support plate 3131 and an upper support plate 3132; the lower support plate 3131 is fixed to the inner wall of the lower housing 312, and the lower support plate 3131 A first space (not labeled) is formed between the inner bottom surface of the lower housing 312, and the first space is used to install the first component of the optical path system; the upper support plate 3132 is arranged on the upper surface The upper boss (not numbered in the figure) is connected with the upper housing 311, and is connected with the lower housing 312 through the lower boss arranged on the lower surface, and the upper support plate 3132 is connected with the lower support plate 3131 A second space is formed between them for installing the second part of the optical path system; a third space is formed between the upper support plate 3132 and the top of the upper housing 311 for installing the first part of the optical path system Three parts.

Those skilled in the art should know that the first component, the second component, and the third component can be divided according to needs, and selected according to the needs of the optical path and the volume of each component, which is not specifically limited here. For example, the first component may be part of the driving circuit, the second component may be the driving motor, the third component and the optical components of the optical system, etc.

Wherein, the upper casing 311 and/or the lower casing 312 are provided with cooling holes.

In a specific embodiment, the meteor optical path system 600 also includes:

An inner sleeve 64, the inner sleeve 64 is a hollow columnar structure with openings at both ends, the second imaging assembly 63 is fixed on the top end of the inner sleeve 64, and the bottom end of the inner sleeve 64 is fixed with the A fixed slit plate 621, the first slit 623 is opened on the fixed slit plate 621;

The fixed plate 65 is provided with a rotating shaft hole (not numbered in the figure) and a fixing hole (not numbered in the figure), and the fixed plate 65 passes through the fixing hole and the upper surface of the upper support plate 3132 The boss is fixedly connected, and the rotating slit gear 624 is rotatably connected to the fixing plate 65 through the shaft hole;

The second light source 61 is fixedly connected to the lower boss on the lower surface of the upper support plate 3132, and is arranged below the first slit 623 and the rotating slit gear 624. The upper support plate 3132 Corresponding light passing holes are provided on the top.

The driving motor 320 may be fixed between the lower support plate 3131 and the upper support plate 3132 .

Preferably, the meteor optical path system 600 also includes an outer sleeve 66, the outer sleeve 66 is a hollow columnar structure, the bottom of the outer sleeve 66 is open, and the inner sleeve 64 is separated from the outer sleeve 66. The bottom end of the outer sleeve 66 is inserted into and accommodated in the outer sleeve 66, and the top of the outer sleeve 66 is provided with an opening and a blocking edge 661, the opening allows light to pass through, and the blocking edge 661 is used to block the The inner sleeve 64 escapes from the top; the size of the fixed slit plate 621 is larger than the size of the inner sleeve 64; the outer wall of the outer sleeve 66 is provided with a flange 662, and the flange 662 A through hole is opened on the top; a fixed column matching the through hole protrudes from the fixed plate 65, and a screw passes through the through hole and is fixed on the fixed column to secure the outer sleeve 66 is fixed on the fixed plate 65;

The fixing plate 65 is disposed between the outer sleeve 66 and the rotating slit gear 624 , and a side of the fixing plate 64 close to the outer sleeve 66 is opened for accommodating the fixing slit plate. 624 , the bottom of the accommodating groove is also provided with an optical path opening, and the first slit 623 is disposed facing the optical path opening.

In one embodiment, the handle end of the tray assembly 521 is connected with a blocking wall 5205 for matching with the housing 301 of the meteor sky projection lamp 100, so as to shield the The body of the tray 5201; the outer side of the sealing wall 5205 is also provided with a handle 5206; the handle 5206 is spherical.

Further, the number of the second slit grooves 625 is 3, and the 3 second slit grooves 625 are evenly arranged along the circumferential direction, and the included angle between two adjacent second slit grooves is 12°. Spend.

Optionally, the fixed slit plate 621 is fixedly connected with the second imaging assembly 63, so as to fix the position of the first slit 623 and ensure the stability of the projected picture.

Further, the top surface of the outer sleeve 66 is perforated to form the opening, and the top surface forms the blocking edge 661 .

Please refer to Figures 8-9 again, preferably, the side of the tray 5201 is provided with a plurality of arc-shaped grooves 5204 for matching with the clamping structure of the upper case 311/upper support plate 3132, so as to Fix or position the tray body 10 and the upper casing 311 /upper support plate 3132 . For example, the locking structure may be an elastic arm with a locking protrusion.

The projection sheet 522 is detachably arranged on the tray 5201. Specifically, the upper surface of the gear 5202 is protruded with an annular barrier wall 5222, and the barrier wall 5222 is formed around to accommodate the projection. The cavity of the sheet 522, the surrounding wall 5222 is provided with a plurality of L-shaped slots 5223 that penetrate the surrounding wall 22 in the radial direction, and the locking slots 5223 include the top surface of the surrounding wall 5222 An opening opened at the bottom, and a bayonet socket located at the bottom of the opening that communicates with the opening and is arranged transversely.

The projection sheet 522 includes a disc-shaped projection sheet body 5231, and a plurality of clamping arms 5232 protruding from the side wall of the projection sheet body 5231 are matched with the locking slots 5223, and the clamping arms 5232 Extending along the radial direction of the projection body 5231 , the outer diameter of the projection body 5231 is smaller than the inner diameter of the surrounding wall 5222 , and the clamp 5232 is clamped in the slot 5223 .

Specifically, when in use, by rotating the projection sheet 522, the projection sheet 522 can be released from the card slot 5223 and snapped in, so as to realize the disassembly of the projection sheet 522; The star projection lamp can be within 100.

Wherein, the clamping arm 5232 and the clamping groove 5223 can adopt an interference fit to increase the force of the caliper. The way of interference fit can be realized through inclined planes, and the clamping arm 5223 or the clamping groove 5223 can also be made of elastic material, and the interference fit can be realized through size design and elastic deformation fit. Specifically, generally speaking, the width of the locking arm 5232 is less than or equal to the width of the opening, and the thickness of the locking arm 5232 is less than or equal to the thickness of the bayonet socket.

Further, the tray 5201 also includes an annular hoop 524, and a plurality of first hooks 5241 protrude downward from the bottom of the hoop 524; The housing chamber 101, the bottom surface of the housing chamber is provided with a plurality of holes matching the first hook 5241; the inner diameter of the hoop 524 is smaller than the outer diameter of the gear 5202, and larger than the circumference The outer diameter of the blocking wall 5222 ; the clamp 524 fixes the gear 5202 on the tray 5201 through the cooperation of the first hook 5241 and the clamping hole.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields , are all equally included within the protection scope of the present invention.

Claims (10)

1. A meteor sky projection lamp comprises a base and a lamp body arranged on the base, wherein the lamp body comprises a shell and a light path system arranged in the shell; the system is characterized in that the optical path system comprises a projection optical path system and a meteor optical path system; the top of the shell is provided with a light path outlet, and the light path outlet comprises a projection light path outlet and a meteor light path outlet;

the projection light path system sequentially comprises a first light source, a first projection component and a first imaging component from bottom to top; the first projection assembly comprises a tray assembly detachably arranged on the shell, a projection sheet is detachably fixed on the tray assembly, the position of the projection sheet is correspondingly arranged on a light path between the first light source and the first imaging assembly, and light emitted by the first light source passes through the projection sheet, is imaged by the first imaging assembly and then is projected to the outside through the projection light path outlet;

the meteor light path system comprises a second light source, a second imaging component and a second projection component arranged between the second light source and the second imaging component; the second projection assembly comprises a fixed slit plate and a rotary slit assembly, the fixed slit plate is arranged below the second imaging assembly and is fixedly connected with the second imaging assembly, and the rotary slit assembly is arranged between the fixed slit plate and the second light source; wherein, at least one first slit is arranged on the fixed slit plate; the rotary slit assembly comprises a rotary slit gear, a central shaft of the rotary slit gear is positioned at the side edge of the first slit, at least one second slit groove which is arranged along the radial direction of the rotary slit gear is formed in the rotary slit gear, and the second slit groove penetrates through the thickness direction of the rotary slit gear; the widths of the first slit and the second slit are different;

the optical path system further comprises a driving motor, and a first driving gear and a second driving gear are coaxially arranged on an output shaft of the driving motor; the first driving gear is meshed with the rotating slit gear to drive the rotating slit gear to rotate; the tray assembly comprises a tray, a gear rotatably arranged on the tray and a projection sheet fixed on the gear; the tray is provided with a notch, the gear is rotatably fixed on the upper surface of the tray, and the rack part of the gear is exposed at the notch; the second driving gear is meshed with the rack exposed to the gear at the notch to drive the gear to rotate.

2. The meteor sky projection lamp according to claim 1, wherein an opening is formed in the top of the housing, a fixing plate is mounted on the opening, a central hole is formed in the center of the fixing plate, the first imaging component is mounted above the central hole of the fixing plate, and the central hole is the projection light path outlet; and the edge of the fixing plate is provided with a side hole, and the side hole is the meteor light path outlet.

3. The meteor star projection lamp of claim 1 wherein said housing comprises an upper housing, a lower housing and an inner support; the upper shell and the lower shell are hemispherical, the upper shell and the lower shell are spliced with each other to form a hollow sphere, and the inner support is fixed with the lower shell and is used for supporting elements of the optical path system;

wherein the inner bracket comprises a lower supporting plate and an upper supporting plate; the lower support plate is fixed with the inner wall of the lower shell, and a first space is formed between the lower support plate and the inner bottom surface of the lower shell and is used for installing a first component of the optical path system; the upper supporting plate is connected with the upper shell through an upper convex column arranged on the upper surface and is connected with the lower shell through a lower convex column arranged on the lower surface, and a second space is formed between the upper supporting plate and the lower supporting plate and is used for installing a second component of the optical path system; a third space is formed between the upper support plate and the top of the upper housing for mounting a third component of the optical path system.

4. A meteor sky projection lamp according to claim 3, wherein the upper and/or lower housings are provided with heat dissipation holes.

5. A meteor star projection lamp according to claim 3, wherein said meteor light path further comprises:

the inner sleeve is of a hollow columnar structure with two openings at two ends, the second imaging component is fixed at the top end of the inner sleeve, the bottom end of the inner sleeve is fixed with the fixed slit plate, and the fixed slit plate is provided with the first slit;

the fixed plate is provided with a rotating shaft hole and a fixed hole, the fixed plate is fixedly connected with an upper convex column on the upper surface of the upper supporting plate through the fixed hole, and the rotating slit gear is rotatably connected with the fixed plate through the rotating shaft hole;

the light source is fixedly connected with a lower convex column on the lower surface of the upper supporting plate, and is arranged below the first slit and the rotating slit gear, and the upper supporting plate is provided with a corresponding light passing hole;

the rotary slit assembly further comprises a driving motor which is in driving connection with the rotary slit gear so as to drive the rotary slit gear to rotate.

6. The meteor sky projection lamp according to claim 5, further comprising an outer sleeve, the outer sleeve having a hollow cylindrical structure, a bottom opening of the outer sleeve, the inner sleeve penetrating from a bottom end of the outer sleeve and being received in the outer sleeve, a top of the outer sleeve having an optical path opening through which light passes and a blocking edge for blocking the inner sleeve from escaping from the top; the size of the fixed slit plate is larger than that of the inner sleeve; the outer wall of the outer sleeve is provided with a convex edge, and the convex edge is provided with a through hole; the fixing plate is convexly extended with a fixing column matched with the through hole, and the fixing column is fixed on the fixing column through a screw penetrating through the through hole so as to fix the outer sleeve on the fixing plate;

the fixed plate is arranged between the outer sleeve and the rotating slit gear, a containing groove for containing the fixed slit plate is formed in one side, close to the outer sleeve, of the fixed plate, a light path opening is further formed in the bottom of the containing groove, and the first slit is opposite to the light path opening.

7. The meteor sky projector of claim 1, wherein a handle end of the tray assembly is connected to a blocking wall for mating with a housing of the meteor sky projector to shield a body of the tray after the tray is inserted into the housing; a handle is further arranged on the outer side of the blocking wall; the handle is spherical.

8. The meteor sky projection lamp according to claim 1, wherein the number of the second slit grooves is 3, 3 second slit grooves are uniformly arranged along the circumferential direction, and the included angle between every two adjacent 2 second slit grooves is 120 degrees.

9. A meteor sky projector according to claim 1, wherein,

the meteor sky projection lamp further comprises an arc-shaped suspension bracket; the bottom end of the suspension bracket is connected with the base, the top end of the suspension bracket is connected with the shell, and the lamp body is arranged on one side of the intrados of the suspension bracket in a suspension manner and is positioned above the base; the base is internally provided with a main control circuit module, and the main control circuit module is electrically connected with the optical path system through a cable.

10. The meteor sky projection lamp of claim 9, wherein the interior of the suspension bracket is hollow for routing the cable; the bottom end of the suspension bracket is rotatably arranged on the base, a lower wire passing port is formed in the bottom end, and the lower wire passing port is communicated with the inside of the base; the top end of the suspension bracket is rotatably arranged on the shell, an upper wire passing port is formed in the top end, and the upper wire passing port is communicated with the inside of the shell; the bottom end of the suspension bracket is connected with the base through a first rotating pair, a first axle center of the first rotating pair is arranged along the vertical direction, and the center of the lower wire passing port coincides with the first axle center, so that the lamp body and the suspension bracket are rotatably arranged on the base around the first axle center; the top end of the suspension bracket is connected with the shell through a second revolute pair, a second shaft center of the second revolute pair is arranged along the horizontal direction, and the center of the upper wire passing opening coincides with the second shaft center, so that the lamp body is rotatably arranged on the suspension bracket around the second shaft center.

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