Projection device

Abstract

The utility model relates to the technical field of projection devices, and discloses a projection device, which comprises a base provided with an insertion slot inside, and the insertion slot penetrates outwards to form an insertion port; the projection assembly comprises a first light source, a bearing disc located above the first light source and an imaging disc installed on the bearing disc, the bearing disc is inserted into the insertion groove from the insertion opening, and the imaging disc comprises an imaging piece; the driving assembly drives the imaging disc to rotate; and the projection lens is positioned above the imaging disc and is arranged corresponding to the imaging sheet. The projection device can reduce the processing difficulty and cost and improve the assembly efficiency on the basis of ensuring the dynamic projection effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to projection device technical field especially relates to a projection device. BACKGROUND

[0002] The prior art discloses a projection device, including shell, fixed in the base of shell, install in the light source subassembly of base, be located light source subassembly top and the plug -in disc of movable plug -in in base, install in the imaging disc of plug -in disc, drive the motor assembly of imaging disc rotation and be located the lens group of imaging disc top, wherein, the base includes the upper seat and lower seat of cooperation to form the plug -in groove along the up and down direction, and the plug -in disc is movable and plugs in the plug -in groove. Because the base is spliced by the upper seat and lower seat, the upper seat and lower seat need to be separately processed and formed, in addition, the upper seat is provided with a projection port and a plurality of first connecting parts, and the lower seat is provided with a light transmission hole and a plurality of second connecting parts. When splicing, the projection port and the light transmission hole need to be arranged in alignment, the plurality of first connecting parts are connected with the second connecting parts one by one, which leads to high processing difficulty and high processing cost of the upper seat and the lower seat, and the splicing operation between the upper seat and the lower seat is complicated and time-consuming. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a projection device which can guarantee dynamic projection effect, reduce processing difficulty and cost, and improve assembly efficiency.

[0004] In order to achieve the above purpose, the utility model provides a projection device, which comprises a base, an internal plug-in groove, an external plug-in port, a projection assembly, a first light source assembly, a bearing disc above the first light source assembly, and an imaging disc installed on the bearing disc, the bearing disc is inserted into the plug-in groove from the plug-in port, the imaging disc comprises an imaging sheet, a drive assembly, and a projection lens above the imaging disc and corresponding to the imaging sheet.

[0005] Further, the base comprises a bottom wall, a side wall integrally formed with the bottom wall, and a top wall, the bottom wall comprises a first bottom wall and a second bottom wall integrally connected, the side wall comprises a first side wall connected with the edge of the first bottom wall, and the first bottom wall, the first side wall and the top wall form the plug-in groove and the plug-in port.

[0006] Further, the first bottom wall extends downward first and then horizontally to form an extension wall below the plug-in port, the bearing disc is provided with a protruding part matched with the extension wall, the extension wall is provided with an electromagnet, and the protruding part is provided with an iron block, and the electromagnet and the iron block are magnetically connected.

[0007] Further, the imaging disc comprises a main disc, and an imaging sheet installed on the main disc, the main disc comprises a through slot penetrating through upper and lower surfaces thereof, a rotating shaft part arranged around the through slot, and an outer gear ring arranged around the outside of the rotating shaft part, and the output shaft of the driving assembly is in transmission connection with a transmission gear matched with the outer gear ring.

[0008] Further, the second bottom wall comprises a base wall lower than the first bottom wall, and an annular peripheral wall connected with the edge of the base wall, the top of the annular peripheral wall is connected with the first bottom wall, and the annular peripheral wall and the base wall form a first receiving groove, the first side wall is provided with an opening penetrating through and communicating with the insertion groove and the first receiving groove, and the outer gear ring is partially exposed to the opening and in meshing connection with the transmission gear accommodated in the second bottom wall.

[0009] Further, the bearing disc comprises a bearing groove and a notch arranged in communication with the bearing groove, the outer gear ring is partially exposed to the notch, the notch is exposed to the first receiving groove, the base wall is provided with a first through hole penetrating through, and the output shaft of the driving assembly extends into the first through hole and is located in the first receiving groove.

[0010] Further, a shielding cover is arranged above the annular peripheral wall, the shielding cover covers the transmission gear, the shielding cover is in fixed connection with the second bottom wall, and the outer edge of the shielding cover is partially in shape consistent with the edge of the opening.

[0011] Further, the base further comprises a support cylinder installed on the base, the support cylinder comprises a cylindrical main body accommodating the lens group and located above the projection disc, and a mounting part extending downward from the bottom of one side of the cylindrical main body, the bottom wall comprises a third bottom wall in integral connection with the first bottom wall and the second bottom wall, the side wall comprises a second side wall in edge connection with the third bottom wall, the mounting part is located between the projection disc and the second side wall, and the mounting part is in fixed connection with the third bottom wall.

[0012] Further, the third bottom wall and the second side wall form a second receiving groove, the third bottom wall is provided with a second through hole penetrating through, and the second light source assembly is partially protruding into the second through hole and accommodated in the second receiving groove.

[0013] Further, the base further comprises a housing accommodating the base, the housing comprises an upper housing and a lower housing matched with each other to form an accommodating cavity, the top of the upper housing is provided with a mounting groove, and a decorative ring is embedded in the mounting groove.

[0014] Further, the upper housing is provided with an insertion port for the bearing disc to be inserted into the base, and the insertion port is located above the joint of the upper housing and the lower housing.

[0015] And / or, the projection lens comprises a lens group, a limiting piece sleeved outside the lens group and a support plate, the support plate is located below the limiting piece, the lens group comprises a containing cylinder, the top of the limiting piece is provided with a stop convex edge limiting the containing cylinder from separating upward from the limiting piece, and the bottom of the containing cylinder is in threaded connection with the support plate.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The projection device comprises a base, a projection assembly, a driving assembly and a projection lens, the base is internally provided with a slot, the slot is externally penetrated to form a insertion opening, the projection assembly comprises a first light source assembly, a bearing disc located above the first light source assembly and an imaging disc installed on the bearing disc, the bearing disc is inserted into the slot from the insertion opening, the imaging disc comprises an imaging sheet, the driving assembly drives the imaging disc to rotate, and the projection lens is located above the imaging disc and is arranged in correspondence with the imaging sheet. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the projection device of the utility model embodiment;

[0019] Figure 2 It is Figure 1 It is a perspective view of the upper shell removed;

[0020] Figure 3 It is Figure 1 It is a perspective view of part of the structure;

[0021] Figure 4 It is Figure 3 It is a top view;

[0022] Figure 5 It is Figure 4 It is a sectional view along the A-A direction;

[0023] Figure 6 It is Figure 5 It is an enlarged structural schematic view of the B part;

[0024] Figure 7 It is Figure 3 It is an exploded view of part of the structure;

[0025] Figure 8 It is Figure 7 It is a perspective view of the base;

[0026] Figure 9 It is Figure 8 It is a perspective view from another angle;

[0027] Figure 10 Fig. 1 is a perspective view of the projection device according to the present application; Figure 7 Fig. 2 is a schematic view of the structure in which the support cylinder and the imaging disk cooperate;

[0028] Figure 11 Fig. 3 is an exploded view of the projection device according to the present application; Figure 10

[0029] Figure 12 Fig. 4 is an exploded view of the projection lens according to the present application; Figure 7

[0030] Figure 13 Fig. 5 is an exploded view of the projection disk according to the present application; Figure 7

[0031] Figure 14 Fig. 6 is a perspective view of the support cylinder according to the present application; Figure 7

[0032] Figure 15 Fig. 7 is a perspective view of the upper housing according to the present application; Figure 1

[0033] Figure 16 Fig. 8 is a perspective view of the projection device according to the present application from another angle. Figure 15

[0034] ​​​​​​In the figure: the shell 1; the accommodating cavity 11; the upper shell 1a; the first projection port 12; the second projection port 13; the plug-in port 14; the first connecting part 15; the lower shell 1b; the mounting groove 16; the decorative ring 17; the base 2; the first bottom wall 2a; the second bottom wall 2b; the base wall 21; the annular peripheral wall 22; the third bottom wall 2c; the first side wall 2d; the second side wall 2e; the top wall 2f; the extension wall 2g; the insertion slot 211; the insertion port 212; the light guide hole 213; the light shielding part 214; the first light transmission hole 215; the containing part 216; the first accommodating groove 217; the second accommodating groove 218; the opening 219; the first through hole 220; the second through hole 221; the first connecting hole 222; the third connecting part 223; the fourth connecting part 224; the electromagnet 225; the projection assembly 3; the first light source assembly 31; the first lamp plate 311; the first lamp bead 312; the first light guide piece 313; the bearing disc 32; the bearing groove 321; the notch 322; the second light transmission hole 323; the protruding part 324; the iron block 325; the imaging disc 33; the main disc 331; the rotating shaft part 333; the outer gear ring 334; the imaging sheet 335; the projection lens 4; the lens group 41; the containing cylinder 411; the sliding groove 4111; the upper lens 412; the lower lens 413; the limiting piece 42; the matching groove 421; the convex strip 422; the projection hole 423; the limiting part 424; the stop convex edge 425; the support plate 43; the through hole 431; the light shielding part 432; the fifth connecting part 433; the driving assembly 5; the motor 51; the output shaft 511; the driven gear 52; the driving gear 53; the projection member 6; the second light source assembly 61; the second lamp plate 611; the second lamp bead 612; the second light guide piece 613; the projection disc 62; the upper disc 621; the fixing hole 6211; the projection window 6212; the accommodating groove 6213; the clamping hook 6214; the positioning column 6215; the lower disc 622; the clamping groove 6221; the projection sheet 623; the pattern printing part 6231; the positioning hole 6232; the lens group 63; the threaded sleeve 631; the retaining piece 632; the lens 633; the support cylinder 64; the cylindrical main body 641; the mounting part 642; the convex column 6421; the base 7; the shielding cover 8; the third through hole 81; the sixth connecting part 82; the control board 9. DETAILED DESCRIPTION

[0035] In order to make the personnel in the technical field better understand the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0036] In this article, "up, down, inner, outer" and other terms are established based on the positional relationship shown in the drawings, and according to the different drawings, the corresponding positional relationship may also change accordingly, therefore, it cannot be understood as an absolute limitation on the scope of protection; And, such as "first" and "second" and other relationship terms are only used to distinguish one from another with the same name of the component, and do not necessarily require or imply any such actual relationship or order between the components.

[0037] As Figures 1-16 Indicated, the utility model provides a kind of projection device, including shell 1, pedestal 2 being installed to shell 1, projection component 3, projection lens 4, drive component 5, pattern disc component 6, base 7 being movably connected with shell 1, shielding cover 8 and control panel 9.Drive component 5 and control panel 9 form electric connection.As Figure 1 、 Figures 15-16 Indicated, shell 1 includes upper shell 1a and lower shell 1b mutually cooperating to form containing cavity 11, upper shell 1a is equipped with first projection port 12 and second projection port 13 and plug-in port 14 being arranged with containing cavity 11, first projection port 12 and second projection port 13 are spaced apart and are communicated with outside.Upper shell 1a is equipped with installation groove 16, decorative ring 17 is embedded in installation groove 16, and the color depth of the decorative ring 17 is stronger than the color depth of the upper shell 1a, in this embodiment, the decorative ring 17 presents color.Upper shell 1a is equipped with plug-in port 14 for bearing disc 32 to insert pedestal 2, plug-in port 14 is located above the splicing of upper shell 1a and lower shell 1b, upper shell 1a is equipped with first connecting portion 15 and second connecting portion 16 and annular stop portion 17 in containing cavity 11, stop portion 17 is arranged around first projection port 12.

[0038] As Figure 3 、 Figures 8-9 、 Figures 7-9As shown, the base 2 is integrally formed and accommodated in the accommodating cavity 11, the base 2 is internally provided with a slot 211, the slot 211 is externally penetrated to form an insertion port 212, the insertion port 212 is arranged in alignment with the insertion port 14 in the horizontal direction, the base 2 includes a bottom wall, a side wall integrally formed with the bottom wall, and a top wall 2f, the bottom wall includes a first bottom wall 2a and a second bottom wall 2b integrally connected, and a third bottom wall 2c, the second bottom wall 2b and the third bottom wall 2c are connected and located on the same side of the first bottom wall 2a, the first bottom wall 2a and the third bottom wall 2c can be located on the same plane or different planes, the side wall includes a first side wall 2d connected with the edge of the first bottom wall 2a and a second side wall 2e connected with the edge of the third bottom wall 2c, part of the first side wall 2d is located inside the second side wall 2e, and one side edge of the second side wall 2e is connected with the first side wall 2d, the first bottom wall 2a, the first side wall 2d, and the top wall 2f enclose the slot 211 and the insertion port 212, the base 2 is provided with a light guide hole 213 penetrating through the top wall 2f and a light shielding portion 214 arranged around the light guide hole 213, the light shielding portion 214 is formed by extending upward from the top wall 2f of the base 2, the base 2 is provided with a first light transmission hole 215 penetrating through the first bottom wall 2a and a containing portion 216 arranged around the first light transmission hole 215, the containing portion 216 is formed by extending downward from the first bottom wall 2a, the slot 211, the light guide hole 213, and the first light transmission hole 215 are respectively arranged in communication, and the center axis of the light guide hole 213 and the center axis of the first light transmission hole 215 are on the same straight line.

[0039] As shown in Figure 5 , the second bottom wall 2b includes a base wall 21 lower than the first bottom wall 2a and an annular peripheral wall 22 connected with the edge of the base wall 21, the top of the annular peripheral wall 22 is connected with the first bottom wall 2a and the third bottom wall 2c, the annular peripheral wall 22 and the base wall 21 enclose to form a first accommodating groove 217, and the first side wall 2d is provided with an opening 219 in communication with the slot 211 and the first accommodating groove 217. The third bottom wall 2c and the second side wall 2e enclose to form a second accommodating groove 218, the base wall 21 is provided with a first through hole 220, and the third bottom wall 2c is provided with a second through hole 221 and a first connecting hole 222. The base 2 is provided with a third connecting portion 223 and a fourth connecting portion 224 for connecting with the first connecting portion 15, specifically, the first connecting portion 15 and the fourth connecting portion 224 can be directly connected, or connected through a pin, a bolt or other fasteners, the third connecting portion 223 can be arranged on the annular peripheral wall 22, the fourth connecting portion 224 can be multiple and arranged at intervals, and specifically can be arranged on the side wall and the top wall 2f. The base 2 further includes an electromagnet 225, the electromagnet 225 is mounted on the first bottom wall 2a, in this embodiment, the electromagnet 225 is fixed on the extension wall 2g.

[0040] As shown in Figure 7 , Figure 10 , Figure 11 andFigure 5 As shown in the figures, the projection assembly 3 comprises a first light source assembly 31, a bearing disc 32 located above the first light source assembly 31, and an imaging disc 33 mounted on the bearing disc 32, the bearing disc 32 is inserted into the slot 211 from the insertion port 212, and the light guide hole 213 is located below the imaging disc 33. The bearing disc 32 comprises a bearing groove 321, a notch 322 arranged in communication with the bearing groove 321, and a second light transmission hole 323, the bearing groove 321 and the notch 322 are arranged in communication in the horizontal direction, and the notch 322 is exposed to the first receiving groove 217, i.e. they are arranged in communication in the front-back direction. The second receiving groove 218 is arranged adjacent to the first receiving groove 217. The second light transmission hole 323 is arranged in communication with the bearing groove 321 in the up-down direction, and the second light transmission hole 323 is coaxially arranged with the bearing groove 321 in the up-down direction. The imaging disc 33 is received in the bearing groove 321, i.e. the imaging disc 33 can be inserted and pulled out of the slot 211 along with the bearing disc 32.

[0041] As shown in the figures, Figure 7 , Figure 10 , Figure 11 and Figure 7 The imaging disc 33 comprises a main disc 331, an imaging sheet 335 mounted on the main disc 331, the main disc 331 comprises a through groove 332 penetrating its upper and lower surfaces, a rotating shaft portion 333 arranged around the through groove 332, and an outer gear ring 334 arranged around the outer side of the rotating shaft portion 333, and the imaging sheet 335 is exposed to the through groove 332, i.e. the imaging sheet 335 is exposed to the upper and lower surfaces of the main disc 331. The light emitted by the first light source assembly 31 passes through the first light transmission hole 215 and the through groove 332 in turn. The rotating shaft portion 333 protrudes downward into the second light transmission hole 323, and the rotating shaft portion 333 serves as the rotating shaft of the imaging disc 33 rotating around the second light transmission hole 323. In combination with Figure 5As shown, the driving assembly 5 is at least partially accommodated in the first accommodating groove 217. The driving assembly 5 drives the imaging disc 33 to rotate, specifically, the output shaft 511 of the driving assembly 5 is transmissionally connected with a driven gear 52 which is matched with an outer gear ring 334, and the outer gear ring 334 is connected with the driven gear 52 through tooth meshing. The outer gear ring 334 is partially exposed to the opening 219 and is meshingly connected with the driven gear 52 accommodated in the first accommodating groove 217. The output shaft 511 of the motor 51 extends into the first through hole 220 and is located in the first accommodating groove 217. In this embodiment, in order to realize the rotation of the driven gear 52, the output shaft 511 of the motor 51 is connected with a driving gear 53 which is transmissionally matched with the driven gear 52, the driving gear 53 is located in the first accommodating groove 217, and the driving gear 53 is indirectly transmissionally connected with the driven gear 52 through an intermediate gear or a group of intermediate gears. In other embodiments, the driving gear 53 can also be directly meshingly connected with the driven gear 52, or the driven gear 52 is fixedly installed on the output shaft 511 of the motor 51. An shielding cover 8 is arranged above the annular peripheral wall 22, the shielding cover 8 covers the driving gear 53, the driven gear 52 and the intermediate gear or the group of intermediate gears, and the shielding cover 8 is matched with the base 2 to seal the opening 219 and the first accommodating groove 217. The shielding cover 8 is provided with a third through hole 81 through which the output shaft 511 of the motor 51 extends out and a hole through which the shaft of the driven gear 52 protrudes, and the shielding cover 8 is provided with a sixth connecting part 82 connected with the third connecting part 223 to fixedly connect the shielding cover 8 with the second bottom wall 2b of the base 2. The third connecting part 223 and the sixth connecting part 82 can be directly fixedly connected or connected through a pin, a screw or other fasteners. The outer edge shape of part of the shielding cover 8 matches the edge shape of the opening 219, and the outer edge shape of the rest of the shielding cover 8 matches the contour shape of the annular peripheral wall 22. The outer peripheral edge of the shielding cover 8 is attached to part of the top wall 2f edge and part of the first side wall 2d edge, and the bottom surface of the shielding cover 8 is attached to the top surface of the annular peripheral wall 22, so as to avoid foreign matters from entering the base 2 to affect the stability of the motor 51 driving the imaging disc 33 to rotate.

[0042] As shown in Figure 8 , Figure 1 , the first light source assembly 31 comprises a first lamp plate 311, a first lamp bead 312 fixed to the first lamp plate 311, and a first light guide 313 sleeved outside the first lamp bead 312. The first lamp plate 311 and the first light guide 313 are both provided with first mounting holes 314, and the first light source assembly 31 is fixedly connected with the base 2 through first fasteners 315 inserted into the first mounting holes 314. The first light guide 313 is partially accommodated in the accommodating part 216.

[0043] As shown in Figure 5 , Figure 12 , Figures 15-16 and Figure 5As shown in the figure, the projection assembly 3 and the projection lens 4 constitute a projection component. The projection component forms a main projection. The projection lens 4 is exposed upwardly at the first projection port 12, and is located above the imaging disc 33 and corresponds to the imaging sheet 335. The projection lens 4 includes a lens group 41, a limiting member 42 sleeved outside the lens group 41, and a support plate 43 located below the limiting member 42. The support plate 43 includes a through hole 431 and a light blocking portion 432 arranged around the through hole 431. The support plate 43 is provided with a fifth connecting portion 433 connected with the second connecting portion 16. The lens group 41 includes a containing cylinder 411 and a plurality of lenses accommodated in the containing cylinder 411. The plurality of lenses at least include an upper lens 412 and a lower lens 413. The top of the limiting member 42 is provided with a stop protruding edge 425 limiting the containing cylinder 41 from being separated upwardly from the limiting member 42. The bottom of the containing cylinder 41 is threadedly connected with the support plate 43. Specifically, the upper part of the containing cylinder 411 is accommodated in the limiting member 42. The lower part of the containing cylinder 411 is provided with an outer thread. The hole wall of the through hole 431 is provided with an inner thread matched with the outer thread. The limiting member 42 is exposed at the first projection port 12. The limiting member 42 includes a matching groove 421 accommodating the upper part of the containing cylinder 411 and a projection hole 423 in communication with the matching groove 421 in the up-down direction. The matching groove 421 and the projection hole 423 penetrate the limiting member 42 in the up-down direction. The outer peripheral wall of the upper part of the containing cylinder 411 is provided with a sliding groove 4111. The inner wall of the matching groove 421 is provided with a protruding strip 422 matched with the sliding groove 4111. The bottom of the side wall of the limiting member 42 is outwardly protruded in the horizontal direction to form a limiting portion 424 in the form of a ring. The stop portion 17 is stopped above the limiting portion 424 to avoid the limiting member 42 from being separated upwardly from the upper shell 1a.

[0044] As shown in the figure, Figure 12 and Figure 1 The containing cylinder 411 protrudes downwardly into the light blocking portion 432 and can enter the light blocking portion 214. The light blocking portion 432 is located above the light blocking portion 214 and the projections of the two portions in the up-down direction at least partially overlap. The light blocking portion 432 and the light blocking portion 214 can be spliced into a light guide pipe. The light emitted by the first light source assembly 31 passes through the imaging sheet 335 and the lens group 41 in sequence, enhancing the dynamic projection effect and meeting the use requirement. The width of the lens closest to the imaging sheet is defined as D. The distance between the imaging sheet and the closest lens in the up-down direction is between 1 / 4D and 5 / 4D, preferably between 1 / 2D and D. When the distance is between 1 / 4D and 5 / 4D, the utilization rate of the first lamp bead 312 is higher and the projection brightness is higher under the condition of ensuring the projection definition of the imaging sheet at the same cost.

[0045] Compared with the prior art that the base is divided into an upper seat and a lower seat which are spliced along the up-down direction, the base 2 is integrally formed, cost is saved, and a later assembling step is omitted. The projection device can ensure dynamic projection effect, reduce processing difficulty and cost, and improve assembling efficiency. The bearing disc 32 is magnetically connected with the base 2, the bearing disc 32 is convenient to pull out from the slot 211, and the bearing disc 32 is stably connected with the base 2 after being inserted into the slot 211. The first bottom wall 2a is first downwardly extended and then horizontally extended, and the extended wall 2g located below the insertion port is formed. The bearing disc 32 is further provided with the iron block 325 matched with the electromagnet 225. In the embodiment, the bearing disc 32 is provided with the protruding part 324 matched with the extended wall 2g, the extended wall 2g is provided with the electromagnet 225, the iron block 325 is arranged on the protruding part 324, and the electromagnet 225 is magnetically connected with the iron block 325.

[0046] As Figure 3 , Figure 5 , Figure 15 and Figure 3 shown, the pattern disc assembly 6 comprises a second light source assembly 61, a projection disc 62 located above the second light source assembly 61 and a lens group 63 located above the projection disc 62, the driving assembly 5 is connected with the projection disc 62 and drives the projection disc 62 to rotate, and the lens group 63 is exposed upwardly in the second projection port 13. The central axis of the second light source assembly 61 and the central axis of the lens group 63 are located on the same straight line, and the central axis of the second light source assembly 61 is arranged in a staggered manner with the central axis of the projection disc 62. The projection disc 62 is detachably fixed to the output shaft 511 of the motor 51, the motor 51 drives the projection disc 62 to rotate, so as to change the projection pattern presented by the projection disc 62. In other embodiments, the driving assembly 5 can be a component capable of outputting rotary motion except the motor. The projection disc 62 and the imaging disc 33 are driven by one motor 51, thereby saving the cost of parts and simplifying the structure of the projection device. The pattern disc assembly 6 forms auxiliary projection, and the main projection and the auxiliary projection cooperate with each other.

[0047] As Figure 6 , Figure 13 and Figure 6As shown, the projection disc 62 includes an upper disc 621, a lower disc 622, a projection slide 623, a fixing hole 6211, and a plurality of projection windows 6212. The fixing hole 6211 is located at the center of the upper disc 621, the output shaft 511 of the motor 51 passes through the third through hole 81 and penetrates upwardly through the lower disc 622 to be fixed with the fixing hole 6211, so as to fixedly connect the motor 51 with the projection disc 62, the plurality of projection windows 6212 are arranged around the rotation center axis of the projection disc 62, the plurality of projection windows 6212 penetrate through the upper disc 621 and the lower disc 622, the projection slide 623 is located between the upper disc 621 and the lower disc 622, the projection slide 623 includes a negative and a plurality of pattern printing parts 6231 and a positioning hole 6232 formed on the negative, the pattern printing parts 6231 can be meteor patterns or other spaceship, astronaut and the like, the projection slide 623 can be a film or a glass sheet, a metal sheet and the like, which meets the requirements. The plurality of pattern printing parts 6231 are arranged correspondingly with the plurality of projection windows 6212, and the pattern printing parts 6231 are exposed to the corresponding projection windows 6212. The bottom surface of the upper disc 621 is concave upwardly to accommodate the lower disc 622, and the upper disc 621 is provided with a positioning column 6215 matched with the positioning hole 6232. The outer peripheral edge of the upper disc 621 is provided with a clamping hook 6214, the bottom surface of the lower disc 622 is provided with a clamping groove 6221, the clamping part of the clamping hook 6214 is connected with the clamping groove 6221, the upper disc 621 and the lower disc 622 are connected as a whole, and the projection slide 623 is mounted and fixed between the upper disc 621 and the lower disc 622.

[0048] As shown in Figure 7 and Figure 3 , the top of the second light source assembly 61 protrudes into the second through hole 221 and is accommodated in the second accommodation groove 218, the second light source assembly 61 includes a second lamp plate 611, a second lamp bead 612 fixed to the second lamp plate 611, and a second light guide 613 sleeved outside the second lamp bead 612. The second lamp plate 611 is provided with a second mounting hole 614, and the second light source assembly 61 is fixedly connected with the base 2 through the second fastener 615 inserted into the second mounting hole 614. The top of the second light guide 613 protrudes into the second through hole 221 and is accommodated in the second accommodation groove 218.

[0049] As shown in Figure 6 , Figure 14 and ​As shown, the pattern disc assembly 6 further comprises a supporting cylinder 64 fixedly installed on the base 2, the supporting cylinder 64 comprising a cylindrical main body 641 receiving the lens group 63 and located above the projection disc 62, a mounting portion 642 extending downward from a side bottom of the cylindrical main body 641, the mounting portion 642 being located between the projection disc 62 and the second side wall 2e, and the mounting portion 642 being fixedly connected with the third bottom wall 2c, that is, the lens group 63 is fixedly connected with the base. The bottom of the mounting portion 642 is located in the second receiving groove 218, and a protruding column 6421 protruding into the first connecting hole 222 is arranged on the bottom of the mounting portion 642. Preferably, the cross-sectional outer contour shape of the mounting portion 642 is substantially arc-shaped, and is matched with the inner contour shape of the partial second side wall 2e, thereby playing a limiting role. The lens group 63 comprises a threaded sleeve 631 received in the cylindrical main body 641, a retaining member 632 received in the threaded sleeve 631, and a lens 633 installed in the retaining member 632, and the inner wall of the cylindrical main body 641 is provided with threads for threadedly connecting with the threaded sleeve 631.

[0050] When the projection device starts to work, the control board 9 controls the motor 51 to drive the projection disc 62 to rotate and the second lamp bead 612 to light up. As the projection disc 62 continuously rotates, the plurality of pattern printing portions 6231 on the projection slide 623 are aligned with the lens group 63 one by one in the up-down direction, and the light emitted by the second lamp bead 612 passes through the pattern printing portions 6231 and the lens group 63 in sequence, thereby forming a projection effect of a meteor sliding. The projection effect formed by the projection slide 623 serves as a background of the projected meteor, that is, the projection slide 623 projects a dynamic effect of a pattern sliding, and the background effect formed by the imaging sheet 335 is combined, and compared with the effect of the traditional projection rotating in the circumferential direction, the dynamic sliding projection effect is more vivid and beautiful.

[0051] The above describes the projection device provided by the present application in detail. The principle and implementation manner of the present application are described by applying specific examples in the present article, and the above description of the examples is only used to help understand the core idea of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principle of the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A projection device, characterized by The application relates to a base, a projection assembly, a drive assembly and a projection lens. The base comprises a bottom wall, a side wall and a top wall, the bottom wall comprises a first bottom wall and a second bottom wall, the side wall comprises a first side wall, the first bottom wall, the first side wall and the top wall form the insertion slot and the insertion port. The first bottom wall extends downward and then horizontally, and an extension wall is arranged below the insertion port, the bearing disc is provided with a protruding part matched with the extension wall, the extension wall is provided with an electromagnet, and the protruding part is provided with an iron block, the electromagnet and the iron block are magnetically connected. The imaging disc comprises a main disc and an imaging sheet, the main disc comprises a through slot, a rotating shaft part and an outer gear ring, the output shaft of the drive assembly is transmissionally connected with a driven gear matched with the outer gear ring. The second bottom wall comprises a base wall and an annular peripheral wall, the annular peripheral wall is connected with the first bottom wall, the annular peripheral wall and the base wall form a first accommodating slot, the first side wall is provided with an opening communicating with the insertion slot and the first accommodating slot, and the outer gear ring is partially exposed to the opening and is in meshing connection with the driven gear arranged in the second bottom wall.

2. A projection device as claimed in claim 1, characterized in that The bearing disc comprises a bearing slot and a notch, the outer gear ring is partially exposed to the notch, the notch is exposed to the first accommodating slot, the base wall is provided with a first through hole, the output shaft of the drive assembly extends into the first through hole and is located in the first accommodating slot.

3. A projection device as claimed in claim 2, characterized in that The annular peripheral wall is provided with a shielding cover, the shielding cover covers the driven gear, the shielding cover is fixedly connected with the second bottom wall, and the outer edge of the shielding cover is matched with the edge of the opening.

4. A projection apparatus as defined in claim 2, wherein The application further relates to a pattern disc assembly, the pattern disc assembly comprises a second light source assembly, a supporting cylinder, a projection disc and a lens group, the supporting cylinder comprises a cylindrical main body, an installation part, the bottom wall comprises a third bottom wall, the side wall comprises a second side wall, the installation part is located between the projection disc and the second side wall, and the installation part is fixedly connected with the third bottom wall.

5. A projection apparatus as defined in claim 4, wherein ​ 6. A projection apparatus as defined in claim 5, wherein ​ 7. A projection apparatus as defined in claim 5, wherein ​ 8. The projection apparatus of claim 2, wherein ​ 9. A projection apparatus as defined in claim 8, wherein The third bottom wall and the second side wall form a second accommodating groove, the third bottom wall is provided with a second through hole, and the second light source assembly partially protrudes into the second through hole and is accommodated in the second accommodating groove.

10. The projection apparatus of claim 1, wherein Further comprising a shell for accommodating the base, the shell comprising an upper shell and a lower shell which are matched with each other to form an accommodating cavity, the top of the upper shell being provided with a mounting groove, and a decorative ring being embedded in the mounting groove; And / or, the upper shell is provided with a plug-in opening for inserting the bearing disc into the base, the plug-in opening being located above the joint of the upper shell and the lower shell; And / or, the projection lens comprises a lens group, a limiting piece sleeved outside the lens group, and a support plate, the support plate being located below the limiting piece, the lens group comprising a containing cylinder, the top of the limiting piece being provided with a stop protruding edge for limiting the containing cylinder from being separated upward from the limiting piece, and the bottom of the containing cylinder being threadedly connected with the support plate.

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