Multi-meteor projection structure, multi-meteor starry sky lamp and multi-meteor projection control method

Abstract

The present invention relates to the field of atmosphere lamps, and in particular to a multi-meteor projection structure, a multi-meteor starry sky lamp and a multi-meteor projection control method. The multi-meteor projection structure comprises a plurality of light path structures; light rays generated by first light sources can sequentially pass through intersection points, first convex lenses and prisms, and are then projected to the outside; light spots formed by the light rays passing through the intersection points move along with the movement of the intersection points, and are amplified by the first convex lenses, the projection angle is changed by the prisms, and the meteor effect can be formed on the ceiling and / or the wall; and the light rays generated by the multiple first light sources can achieve the effect of generating multiple meteors at the same time by means of the respectively corresponding light path structures. By adjusting the rotation speed of a rotating disc and permutation and combination of the projection directions of multiple groups of first slits, second slits and prisms, a user can obtain numerous gorgeous and unduplicated meteor effects, and compared with a single-meteor effect, the user experience is improved to obtain a qualitative leap.

Description

Multi-meteor projection structure, multi-meteor starry sky lamp and multi-meteor projection control method Technical Field

[0001] The present invention relates to the field of atmosphere lamps, and in particular to a multi-meteor projection structure, a multi-meteor starry sky lamp, and a multi-meteor projection control method. Background Art

[0002] With the continuous improvement of modern living standards and the continuous evolution of people's lifestyle concepts, ambient lighting has become synonymous with fashionable living and is increasingly accepted by people. Starlight projection lamps on the market generally use projection technology to project a galaxy or starry sky pattern onto ceilings or walls. However, these starlight lamps offer a single star pattern and projection method, failing to meet users' diverse viewing needs. Furthermore, existing ambient lighting fixtures that can display both star patterns and shooting star effects still suffer from a single shooting star effect, failing to meet users' growing demand for a beautiful starry sky. Summary of the Invention

[0003] (1) Technical issues to be resolved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a multi-meteor projection structure, a multi-meteor sky lamp and a multi-meteor projection control method to solve the problem that the existing atmosphere lamps capable of displaying meteor effects still have a single meteor effect.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned object, the multi-meteor projection structure of the present invention includes a plurality of first light sources, a turntable having a plurality of first slits, a plurality of photolithography sheets, a plurality of first convex mirrors, and a plurality of prisms. The photolithography sheets are all provided with second slits, and the projection direction of each prism can be adjusted.

[0007] When the turntable rotates, the projection of the first slit on the photolithography film can intersect with the second slit and form an intersection point, and the intersection point can move along the second slit; the light generated by the first light source can be projected to the outside through the intersection point, the first convex mirror and the prism in sequence.

[0008] Optionally, the multi-meteor projection structure is provided with a Hall sensor switch;

[0009] A plurality of first slits are distributed in an annular array on the turntable, and the extension directions of the first slits form angles with the radial direction and the tangential direction of the turntable, respectively. A plurality of pairs of detection holes are further provided on the edge of the turntable, wherein the center of one of the detection holes in each pair is located in the same radial direction of the turntable as the first end of the corresponding first slit, and the center of the other detection hole is located in the same radial direction of the turntable as the second end of the corresponding first slit.

[0010] The Hall sensor switch can detect the position of the detection hole.

[0011] Optionally, the first slit and the second slit have different widths.

[0012] Optionally, the multi-meteor projection structure further comprises a mounting plate, wherein a plurality of optical channels are formed on the mounting plate, wherein bottoms of the optical channels are each formed with a bottom mounting position, and tops of the optical channels are each formed with a top mounting position;

[0013] The photolithography sheet is installed at the bottom installation position, and the first convex mirror is installed at the top installation position.

[0014] Optionally, an annular light-blocking wall is formed on the bottom surface of the mounting plate, the bottom end of the light-blocking wall is close to the top surface of the turntable, and a plurality of bottom mounting positions are distributed in an annular array within the light-blocking wall; the bottom mounting positions are all rectangular sunken grooves, the bottom of the sunken grooves is provided with a slit extending along the length direction of the sunken groove, and the extension direction of the slit forms an angle with the radial direction and the tangential direction of the light-blocking wall respectively;

[0015] The photoetching sheet is rectangular. When the photoetching sheet is installed in the bottom installation position, the strip slit is parallel to and corresponds to the second slit in the upper and lower parts. The width of the strip slit is greater than that of the second slit.

[0016] Optionally, the photolithography sheet is a coated optical glass sheet, and one corner of the photolithography sheet is chamfered;

[0017] One corner of the sink is formed with an oblique angle adapted to the chamfer.

[0018] Optionally, the multi-meteor projection structure further includes a prism mounting plate having a plurality of mounting holes; the prisms are all cylindrical and the top surface is set as an inclined plane, the prisms can be installed in the mounting holes one by one, and each of the prisms can be deflected around the axis in the mounting hole to adjust the projection direction of the prism.

[0019] Optionally, the multi-meteor projection structure further includes an upper cover plate and a lower cover plate, and the mounting plate is located between the upper cover plate and the lower cover plate;

[0020] The top surface of the upper cover plate is formed with a plurality of sleeves distributed in an annular array, and the sleeves can be sleeved outside the optical path in a one-to-one correspondence, and the prism mounting plate can be covered on the top of the sleeves, and the prisms correspond to the sleeves in a one-to-one correspondence;

[0021] The lower cover plate is formed with a plurality of light path cone cylinders extending downward and distributed in a circular array. The first circuit board on which the first light source is installed blocks the bottom ends of all the light path cone cylinders, and the first light sources are located one-to-one in the light path cone cylinders; the turntable is installed on the lower cover plate by a pin shaft, and when the turntable rotates, the first slit can rotate to correspond one-to-one with the top end of the light path cone cylinder.

[0022] Optionally, the turntable is a gear, and the multi-meteor projection structure further includes a driving mechanism capable of driving the gear to rotate.

[0023] Furthermore, the present invention also provides a multi-meteor starry sky lamp, which comprises:

[0024] A mounting plate, wherein a plurality of optical channels are formed on the mounting plate and a light-transmitting through hole is also opened, wherein the bottom of each of the optical channels is formed with a bottom mounting position, and the top of each of the optical channels is formed with a top mounting position;

[0025] A multi-meteor projection structure, comprising a plurality of first light sources, a turntable having a plurality of first slits, a plurality of photolithography sheets, a plurality of first convex mirrors, and a plurality of prisms, wherein each of the photolithography sheets has a second slit, the photolithography sheets are mounted at the bottom mounting position, and the first convex mirrors are mounted at the top mounting position; when the turntable rotates, the projections of the first slits on the photolithography sheets can intersect with the second slits to form an intersection point, and the intersection point can move along the second slit; light generated by the first light source can be projected to the outside in sequence through the intersection point, the first convex mirror, and the prism; and the projection direction of each prism can be adjusted;

[0026] A starry sky projection structure includes a second light source, a projection film and a lens. The projection film and the lens are both installed corresponding to the light-transmitting through hole. The light generated by the second light source can be projected to the outside through the projection film and the lens in sequence.

[0027] Optionally, a downwardly extending mounting block is further provided on the side of the mounting plate, and a Hall effect sensor is provided on the mounting block;

[0028] A plurality of first slits are distributed in an annular array on the turntable, and the extension directions of the first slits form angles with the radial direction and the tangential direction of the turntable, respectively. A plurality of pairs of detection holes are further provided on the edge of the turntable, wherein the center of one of the detection holes in each pair is located in the same radial direction of the turntable as the first end of the corresponding first slit, and the center of the other detection hole is located in the same radial direction of the turntable as the second end of the corresponding first slit.

[0029] The Hall sensor switch can detect the position of the detection hole.

[0030] Optionally, the multi-meteor projection structure further includes a prism mounting plate having a plurality of mounting holes; the prisms are all cylindrical and the top surface is set as an inclined plane, the prisms can be installed in the mounting holes one by one, and each of the prisms can be deflected around the axis in the mounting hole to adjust the projection direction of the prism.

[0031] Optionally, the multi-meteoric sky lamp further includes an upper cover plate and a lower cover plate, and the mounting plate is located between the upper cover plate and the lower cover plate;

[0032] The top surface of the upper cover is formed with a plurality of sleeves distributed in an annular array, and the sleeves can be sleeved outside the optical path in a one-to-one correspondence. The prism mounting plate can be covered on the top of the sleeves, and the prisms correspond to the sleeves in a one-to-one correspondence. The upper cover is also provided with a threaded through hole, and the lens is mounted in the threaded through hole of the upper cover via a threaded cylinder.

[0033] The lower cover is formed with a plurality of light path cones extending downward and distributed in a circular array. The first circuit board on which the first light sources are mounted blocks the bottom ends of all the light path cones, and the first light sources are positioned one-to-one within the light path cones. The turntable is mounted on the lower cover via a pin, and when the turntable rotates, the first slits can rotate to correspond one-to-one with the top ends of the light path cones.

[0034] The lower cover plate is further formed with a light path cylinder extending downward, and the second circuit board on which the second light source is mounted is located at the bottom end of the light path cylinder, and the light emitted by the second light source is directed toward the inside of the light path cylinder.

[0035] Optionally, the inner diameter of the light path cylinder gradually decreases from bottom to top; a condenser is further provided at the bottom end of the light path cylinder, and the light emitting point of the second light source is located at the focus of the condenser; a second convex mirror is also provided at the top end of the light path cylinder.

[0036] Optionally, a receiving groove is formed on the mounting plate, and the light-transmitting through hole passes through the bottom of the receiving groove;

[0037] The starry sky projection structure further includes a tray that can be inserted into the accommodating groove, and the projection sheet is detachably mounted on the tray.

[0038] Optionally, the multi-meteor starry sky lamp also includes a shell and a base for supporting the shell, the shell can rotate on the base, the mounting plate, the multi-meteor projection structure and the starry sky projection structure are all located in the shell, and the top of the shell is provided with a first projection port corresponding to the prism and a second projection port corresponding to the lens.

[0039] In addition, the present invention also provides a multi-meteor projection control method, wherein the multi-meteor starry sky lamp includes a multi-meteor projection structure and a starry sky projection structure; the multi-meteor projection structure sequentially includes a plurality of first light sources, a turntable with a plurality of first slits, a plurality of photoetched sheets arranged corresponding to the first light sources and fixed in position, and a first convex mirror; when the turntable rotates, the projections of the first slits on the photoetched sheets can intersect with the second slits and form an intersection point, and the intersection point can move along the second slit; the light generated by the first light source can be projected to the outside through the intersection point and the first convex mirror in sequence; a plurality of detection holes are opened at the edge of the turntable in a circumferential direction; the multi-meteor starry sky lamp also includes at least one Hall sensor switch, which is arranged relative to the edge of the turntable, and the Hall sensor switch can detect the movement of the detection hole when the turntable rotates;

[0040] The multi-meteor projection control method comprises the steps of:

[0041] S1, responding to the sensing signal of the Hall sensor switch, and adding 1 to the currently recorded number of vias N to obtain a new number of vias N+1, and using the number of vias N+1 as the newly recorded number of vias;

[0042] S2. Obtaining a lighting control instruction corresponding to the number of vias N+1 according to a pre-stored light source control rule; wherein the lighting control instruction includes a lighting time, a lighting duration, and an off time of each first light source 21 of the plurality of first light sources; and the pre-stored light source control rule includes a correspondence between different numbers of vias and the lighting control instructions;

[0043] S3, controlling the plurality of first light sources to light up and turn off according to the light control instruction.

[0044] Optionally, before step S1, the method further includes the following steps: responding to a multi-meteor projection start signal, initializing the number N of the currently recorded vias to 0, and controlling the turntable of the multi-meteor projection structure to start rotating.

[0045] Optionally, each of the lighting control instructions in the pre-stored light source control rules is preset and does not change, or each of the lighting control instructions is changed.

[0046] Optionally, the lighting control instructions corresponding to the number of vias are generated randomly and instantly.

[0047] (3) Beneficial effects

[0048] The multi-meteor projection structure of the present invention includes multiple optical path structures. The light generated by each first light source can be projected to the outside through the intersection point, the first convex mirror and the prism in sequence. The light spot formed by the light passing through the intersection point will move with the movement of the intersection point, and will be magnified by the first convex mirror. After the projection angle is changed by the prism, a meteor effect can be formed on the roof and / or wall. Moreover, the light generated by multiple first light sources can all pass through the one-to-one corresponding optical path structures to simultaneously produce the effect of multiple meteors.

[0049] Because the projection direction of each prism can be adjusted, each prism can be set to a different projection direction, resulting in multiple meteors appearing simultaneously at random locations on the roof and / or walls. Alternatively, multiple prisms can be divided into groups of two or three, with each group having the same projection direction but spaced apart from each other. This can create an effect where groups of two or three meteors appear simultaneously at different locations on the roof and / or walls. Furthermore, the projection directions of multiple prisms can be set to the same, and the light spots producing the meteor effect all move along the second slits. This can create a meteor effect on the roof and / or walls that has a similar distribution pattern to the second slits, creating a vortex-shaped meteor shower effect.

[0050] Furthermore, the speed of the turntable also affects the speed of the meteors. Combined with the projection direction of the prism, users can customize the meteor effect to suit their needs. Therefore, by adjusting the turntable's rotation speed and permuting multiple sets of first and second slits and the projection direction of the prism, users can achieve countless dazzling and unique meteor effects, significantly improving the user experience compared to a single meteor effect.

[0051] In addition, the light generated by the second light source of the starry sky projection structure can be projected to the outside through the slide and the lens in sequence, so that the starry sky pattern on the slide can be magnified and projected onto the roof and / or wall, and combined with the effect of multiple shooting stars, the starry sky projection can be magnificent. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] FIG1 is an exploded schematic diagram of the overall structure of the multi-meteor starry sky lamp of the present invention;

[0053] FIG2 is an enlarged cross-sectional view of the multi-meteoric sky lamp of the present invention;

[0054] FIG3 is an enlarged schematic diagram of the internal structure of the multi-meteor starry sky lamp of the present invention;

[0055] FIG4 is a front view of FIG3;

[0056] FIG5 is an exploded schematic diagram of the internal structure of the multi-meteor starry sky lamp of the present invention;

[0057] FIG6 is a schematic diagram of FIG5 from another perspective;

[0058] FIG7 is an enlarged schematic diagram of a portion of the structure in FIG6 ;

[0059] FIG8 is an enlarged schematic diagram of a multi-meteor projection structure of the present invention;

[0060] FIG9 is an enlarged schematic diagram of the photoresist of the present invention when it is installed in the bottom mounting position;

[0061] FIG10 is an enlarged schematic diagram of the first convex mirror of the present invention when it is installed in the top installation position;

[0062] FIG11 is an enlarged schematic diagram of the relative positions of the structures of the multi-meteor projection structure and the starry sky projection structure of the present invention;

[0063] FIG12 is a flow chart of a method for controlling multi-meteor projection of a multi-meteor sky lamp according to an embodiment of the present invention.

[0064] [Description of Reference Numerals]

[0065] 100: housing; 101: first projection port; 102: second projection port; 103: slot; 200: base;

[0066] 10: Mounting plate; 11: Light path; 111: Bottom mounting position; 1111: Slit; 1112: Bevel; 112: Top mounting position; 12: Light-transmitting hole; 13: Receiving groove; 14: Mounting block; 141: Hall effect sensor; 15: Light blocking wall; 16: Hook;

[0067] 20: Multi-meteor projection structure; 21: First light source; 211: First circuit board; 22: Turntable; 221: First slit; 222: Detection hole; 23: Photolithography sheet; 231: Chamfer; 24: First convex mirror; 25: Prism; 251: Prism mounting plate;

[0068] 30: Starry sky projection structure; 31: Second light source; 311: Second circuit board; 32: Projection film; 321: Tray; 33: Lens; 331: Threaded cylinder; 34: Second convex mirror; 35: Condenser;

[0069] 40: upper cover; 41: sleeve; 42: threaded through hole;

[0070] 50: lower cover; 51: optical path cone; 52: optical path cylinder; 53: motor compartment; 54: hanging hole;

[0071] 60: PCBA board. DETAILED DESCRIPTION

[0072] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0073] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0074] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0075] In the present invention, unless otherwise specified or limited, the terms "connect," "fix," etc. should be understood in a broad sense. For example, "fix" can mean fixed connection, detachable connection, or integration; "connection" can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0076] 1 to 6 , the present invention provides a multi-meteor sky lamp, which may include a multi-meteor projection structure 20. In a preferred embodiment, to facilitate installation of the multi-meteor projection structure 20, the multi-meteor sky lamp further includes a mounting plate 10. The mounting plate 10 is formed with a plurality of optical channels 11 and a light-transmitting through hole 12. The optical channels 11 extend upward from the mounting plate 10. On the bottom surface of the mounting plate 10, each of the optical channels 11 has a bottom mounting position 111 formed at its bottom, and each of the optical channels 11 has a top mounting position 112 formed at its top.

[0077] The multi-meteor projection structure 20 includes multiple first light sources 21, a turntable 22 with multiple first slits 221, multiple photolithography sheets 23, multiple first convex mirrors 24 and multiple prisms 25. The photolithography sheets 23 are all provided with second slits (not shown). In a preferred embodiment, the photolithography sheets 23 are installed at the bottom mounting position 111, and the first convex mirrors 24 are installed at the top mounting position 112. In other embodiments, the photolithography sheets 23 and the first convex mirrors 24 can also be installed in other ways. When the turntable 22 rotates, the projection of the first slit 221 on the photolithography film 23 can intersect with the second slit and form an intersection point, and the intersection point can move along the second slit; the light generated by the first light source 21 can be projected to the outside through the intersection point, the first convex mirror 24 and the prism 25 in sequence. The light spot formed by the light passing through the intersection point will move with the movement of the intersection point, and after the magnification effect of the first convex mirror 24 and the change of the projection angle through the prism 25, a meteor effect can be formed on the roof and / or wall, and the light generated by multiple first light sources 21 can all produce multiple meteor effects at the same time through a one-to-one corresponding optical path structure.

[0078] Furthermore, the projection direction of each prism 25 can be adjusted, allowing each prism 25 to have a different projection direction (see FIG. 5 ), resulting in the simultaneous appearance of multiple meteors at random locations on the roof and / or wall. Alternatively, the multiple prisms 25 can be divided into groups of two or three, with each group having the same projection direction but spaced apart from each other. This can create an effect on the roof and / or wall where groups of two or three meteors appear simultaneously at different locations. Furthermore, the projection directions of the multiple prisms 25 can be set to be the same, and the light spots producing the meteor effect all move along the second slits. This can create a meteor effect on the roof and / or wall that has a similar distribution shape to the second slits. For example, based on the spiral distribution of the photolithography sheet 23 in FIG. 7 , a spiral-shaped meteor shower effect can be created. Furthermore, if the number of meteors is sufficient (corresponding to a sufficient number of first slits 221, second slits, first convex mirror 24, and prisms 25), a dynamic "colorful chrysanthemum" fireworks effect can be created, or even a dynamic spiral galaxy effect can be created. Furthermore, the rotation speed of the turntable 22 also affects the speed of the meteors. Combined with the projection direction of the prism 25, the user can customize the meteor effect to suit their needs. Therefore, by adjusting the rotation speed of the turntable 22 and arranging and combining multiple sets of first slits 221, second slits, and the projection direction of the prism 25, the user can achieve countless brilliant and unique meteor effects, significantly improving the user experience compared to a single meteor effect.

[0079] In a preferred embodiment, as shown in Figures 5 and 6 , the multi-meteor projection structure 20 further includes a prism mounting plate 251 having a plurality of mounting holes. As shown in Figures 2 and 5 , the prisms 25 are cylindrical with an oblique top surface. Each prism 25 can be mounted one-to-one within the mounting holes, and each prism 25 can rotate within the mounting hole about its own axis to adjust the projection direction of the prism 25. The prisms 25 and the mounting holes can be mounted with a tight fit (e.g., a transition fit) or a threaded fit, as long as the prisms 25 can be both retained and rotated within the mounting holes.

[0080] In addition, as shown in Figures 8 to 11 , a downwardly extending mounting block 14 is provided on the side of the mounting plate 10. A Hall effect sensor 141 is mounted on the mounting block 14. Multiple first slits 221 are distributed in an annular array on the turntable 22. The first slits 221 extend in an angle with the radial and tangential directions of the turntable 22 (i.e., they extend neither radially nor tangentially). Both angles can range from 30° to 60°. Furthermore, multiple pairs of detection holes 222 are defined along the edge of the turntable 22. In each pair of detection holes 222, the center of one detection hole 222 is located in the same radial direction as the first end of the corresponding first slit 221, and the center of the other detection hole 222 is located in the same radial direction as the second end of the corresponding first slit 221. In other words, the central angle of each pair of detection holes 222 on the turntable 22 is the same as the central angle of the corresponding first slit 221 on the turntable 22.

[0081] The Hall effect sensor switch 141 can be a bipolar switch. When light emitted from its transmitting end passes through the detection aperture 222 and is received by the receiving end, a corresponding detection signal is generated. In other words, the Hall effect sensor switch 141 can detect the position of the detection aperture 222, thereby obtaining a signal indicating the rotation angle of the turntable 22, and thus, the position of the first slit 221. The Hall effect sensor switch 141 transmits this position signal to the PCBA (main control board) 60. Based on this position signal, the PCBA 60 can adjust the rotation speed of the turntable 22 or control the start and stop time periods of each first light source 21. For example, the corresponding first light source 21 may start or stop emitting light only when the intersection point moves to a certain position of the second slit (e.g., the first end, one-third, one-half, three-quarters, or the second end). Different first light sources 21 can choose to start or stop emitting light at different positions within the corresponding second slit. The start and stop time periods of each first light source 21 can be arranged in countless permutations and combinations. Therefore, the user can change the rotation speed of the turntable 22 and arrange the projection directions of multiple prisms 25, and can also superimpose the adjustment of the time dimension of the first light source 21 to obtain different meteor effects, so that the number of meteor effects can be multiplied countless times on the original basis. The user can change the appearance position, brightness, trajectory length, meteor length, meteor width and other effects of the meteor through self-operation, thereby obtaining great fun.

[0082] In a preferred embodiment, the first slit 221 and the second slit have different widths. The width of the second slit can be changed by replacing the photolithography sheet 23, thereby adjusting the width of the meteor. Alternatively, the turntable 22 can be a gear, and the multi-meteor projection structure also includes a drive mechanism capable of driving the gear. The drive mechanism can include a servo motor and a transmission gear (not shown) meshing with the gear serving as the turntable 22. The servo motor can be placed in the motor compartment 53 and can operate according to commands from the PCBA board 60. The transmission gear can transmit the servo motor's movements to the turntable 22.

[0083] Furthermore, an annular light-blocking wall 15 is formed on the bottom surface of the mounting plate 10, the bottom end of the light-blocking wall 15 being close to the top surface of the turntable 22, and a plurality of bottom mounting positions 111 being distributed in an annular array within the light-blocking wall 15. Referring to FIG11 , the light-blocking wall 15 can block the gap between the mounting plate 10 and the turntable 22 to prevent interference from external light and to prevent light emitted by the first light source 21 from escaping. The bottom mounting positions 111 are all rectangular grooves, the bottom of which is provided with a slit 1111 extending along the length of the groove. The extension direction of the slit 1111 forms an angle with the radial direction and the tangential direction of the light-blocking wall 15 (i.e., it extends neither radially nor tangentially), and both angles can be between 30° and 60°. The photolithography sheet 23 is rectangular, with the second slit located in the middle and extending along its length. When the photolithography sheet 23 is installed in the bottom mounting position 111, the slit 1111 is parallel to and aligned with the second slit. The width of the slit 1111 is greater than that of the second slit to avoid blocking the light propagation path. The photolithography sheet 23 can be a coated optical glass sheet. Referring again to FIG7 , one corner of the photolithography sheet 23 is formed with a chamfer 231. Furthermore, one corner of the recess is formed with an angled corner 1112 that matches the chamfer 231. When the photolithography sheet 23 is installed in the bottom mounting position 111, the chamfer 231 snaps into the angled corner 1112, achieving a foolproof effect and improving assembly efficiency and accuracy.

[0084] In addition, as a preferred embodiment of the multi-meteor starry sky lamp, referring to Figures 2, 5, 6 and 11, the multi-meteor starry sky lamp also includes a starry sky projection structure 30, which includes a second light source 31, a slide 32 and a lens 33. The slide 32 and the lens 33 are both installed corresponding to the light-transmitting through hole 12. The light generated by the second light source 31 can be projected to the outside through the slide 32 and the lens 33 in sequence, so that the starry sky pattern on the slide 32 can be magnified and projected onto the roof and / or wall, and combined with the effect of multiple meteors, the starry sky projection is beautiful. Moreover, in a more preferred embodiment, a receiving groove 13 is also formed on the mounting plate 10, and the light-transmitting through hole 12 passes through the bottom of the receiving groove 13. The starry sky projection structure 30 also includes a tray 321 that can be inserted into the accommodating groove 13. The projection film 32 is detachably mounted on the tray 321. Moreover, an auxiliary gear is mounted on the tray 321. The projection film 32 is specifically laid flat on the auxiliary gear. The auxiliary gear can rotate under the drive of the servo motor, thereby causing the projected starry sky image to rotate accordingly.

[0085] Referring again to Figures 3 to 6 , the multi-meteoric sky light also includes an upper cover plate 40 and a lower cover plate 50, with the mounting plate 10 positioned between the upper and lower cover plates 40 and 50. The top surface of the upper cover plate 40 is formed with a plurality of sleeves 41 arranged in a circular array. The sleeves 41 can be fitted one-to-one onto the outside of the optical path 11. The prism mounting plate 251 can be fitted onto the top of the sleeves 41, with the prisms 25 corresponding one-to-one with the sleeves 41 to form a complete optical path. Furthermore, the upper cover plate 40 is provided with a threaded through-hole 42, into which the lens 33 is mounted via a threaded cylinder 331, facilitating quick assembly and disassembly of the lens 33.

[0086] The lower cover plate 50 is formed with a plurality of light path cone cylinders 51 extending downward and distributed in a circular array. The first circuit board 211 on which the first light source 21 is installed blocks the bottom ends of all the light path cone cylinders 51. The first light sources 21 are located one-to-one in the light path cone cylinders 51 to prevent the light generated by the first light source 21 from overflowing. Moreover, referring to Figure 2 again, the inner diameter of the light path cone cylinder 51 gradually increases from bottom to top. When the light generated by the first light source 21 reaches the first slit 221 at the top of the light path cone cylinder 51, the light can diffuse to cover the entire first slit 221. The turntable 22 is mounted on the lower cover plate 50 by a pin shaft. When the turntable 22 rotates, the first slit 221 can rotate to correspond one-to-one with the top end of the light path cone cylinder 51. In addition, space is reserved in the middle of the lower cover plate 50 to form a motor compartment 53. In addition, a plurality of hooks 16 are formed on the bottom surface of the mounting plate 10, and the plurality of hooks 16 are distributed in a circular array around the light-transmitting hole 12. A plurality of hanging holes 54 are opened on the lower cover plate 50, and the hooks 16 can be hung on the hanging holes 54 one by one, so that the mounting plate 10 and the lower cover plate 50 are positioned with each other and firmly docked and installed.

[0087] Furthermore, the lower cover plate 50 is formed with a downwardly extending light path cylinder 52. The second circuit board 311, mounted with the second light source 31, is located at the bottom end of the light path cylinder 52. Light emitted by the second light source 31 is directed into the light path cylinder 52. Furthermore, referring again to Figure 2, the inner diameter of the light path cylinder 52 gradually decreases from bottom to top to focus the light. Furthermore, a condenser 35 is provided at the bottom end of the light path cylinder 52. The emission point of the second light source 31 (the top of the light guide extending upward from the second light source 31) is located at the focal point of the condenser 35. A second convex mirror 34 is also provided at the top end of the light path cylinder 52. The condenser 35 enhances the light effect of the second light source 31. The enhanced light is then converted into parallel light by the second convex mirror 34 and reaches the projector 32. It is then magnified and projected by the lens 33, resulting in a more effective starry sky projection.

[0088] In addition, as shown in Figures 1 and 2, the multi-meteor starry sky lamp also includes a housing 100 and a base 200 for supporting the housing 100. The housing 100 can rotate on the base 200 to facilitate the user to adjust the projection angle and project the starry sky onto a predetermined roof and / or wall. The mounting plate 10, upper cover 40, lower cover 50, multi-meteor projection structure 20, and starry sky projection structure 30 are all located within the housing 100. The top of the housing 100 is provided with a first projection port 101 corresponding to the prism 25 and a second projection port 102 corresponding to the lens 33. The side of the housing 100 is also provided with a slot 103 for the tray 321 to enter and exit, so that the user can easily replace different slides 32, thereby enriching the starry sky projection effect.

[0089] Furthermore, the present invention also provides a multi-meteor projection control method based on the multi-meteor sky lamp or the multi-meteor projection structure 20, specifically referring to FIG12, comprising the steps of:

[0090] S1, responding to the sensing signal of the Hall sensor switch 141, and adding 1 to the currently recorded number of vias N to obtain a new number of vias N+1, and using the number of vias N+1 as the newly recorded number of vias;

[0091] S2. Obtaining a lighting control instruction corresponding to the number of vias N+1 according to a pre-stored light source control rule; wherein the lighting control instruction includes a lighting time, a lighting duration, and an off time of each of the plurality of first light sources 21; and the pre-stored light source control rule includes a correspondence between different numbers of vias and the lighting control instructions;

[0092] S3, controlling the plurality of first light sources 21 to light up and turn off according to the light control instruction.

[0093] The lighting time, lighting duration and closing time of each first light source 21 in the lighting control instruction can be synchronous or asynchronous; this can create an effect in which the length and image of each meteor are different.

[0094] Optionally, before step S1, the method further includes the following steps: responding to a multi-meteor projection start signal, initializing the number N of the currently recorded vias to 0, and controlling the turntable of the multi-meteor projection structure to start rotating.

[0095] Optionally, each of the lighting control instructions in the pre-stored light source control rules is preset and does not change, or each of the lighting control instructions is changed.

[0096] Optionally, the lighting control instructions corresponding to the number of vias are generated randomly and instantly.

[0097] In a preferred embodiment of the present invention, the sensing signal generated by the Hall sensor switch 141 can also be used as a correction for the rotation control of the servo motor; since the rotation angle after the servo motor is output is affected by uncertain factors or accidental factors, its actual output value may deviate from the control target value. The sensing signal generated by the Hall sensor switch 141 can be used to know the current angle of the turntable 22, thereby calculating whether there is a deviation between the actual output value and the control target value, and adjusting the output so that the actual output value is consistent with the control target value.

[0098] It should be understood that the above description of the specific embodiments of the present invention is merely for the purpose of illustrating the technical approach and features of the present invention. Its purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, the present invention is not limited to the above-described specific embodiments. Any changes or modifications made within the scope of the claims of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A multi-meteor projection structure, characterized in that: The multi-meteor projection structure comprises a plurality of first light sources (21), a turntable (22) provided with a plurality of first slits (221), a plurality of photolithography sheets (23), a plurality of first convex mirrors (24) and a plurality of prisms (25), wherein the photolithography sheets (23) are each provided with a second slit, and the projection direction of each prism (25) is adjustable; When the turntable (22) rotates, the projection of the first slit (221) on the photolithography sheet (23) can intersect with the second slit and form an intersection point, and the intersection point can move along the second slit; the light generated by the first light source (21) can be projected to the outside through the intersection point, the first convex mirror (24) and the prism (25) in sequence.

2. The multi-meteor projection structure according to claim 1, characterized in that: The multi-meteor projection structure is provided with a Hall sensor switch (141); A plurality of first slits (221) are distributed in an annular array on the turntable (22), and the extension directions of the first slits (221) respectively form angles with the radial direction and the tangential direction of the turntable (22); a plurality of pairs of detection holes (222) are further provided at the edge of the turntable (22), and the center of one of the detection holes (222) in each pair of the detection holes (222) and the first end of the corresponding first slit (221) are located in the same radial direction of the turntable (22), and the center of the other detection hole (222) and the second end of the corresponding first slit (221) are located in the same radial direction of the turntable (22); The Hall sensor switch (141) is capable of detecting the position of the detection hole (222).

3. The multi-meteor projection structure according to claim 1, characterized in that: The first slit (221) and the second slit have different widths.

4. The multi-meteor projection structure according to claim 1, characterized in that: The multi-meteor projection structure further comprises a mounting plate (10), a plurality of light path channels (11) being formed on the mounting plate (10), a bottom portion of each of the light path channels (11) being formed with a bottom mounting position (111), and a top portion of each of the light path channels (11) being formed with a top mounting position (112); The photolithography sheet (23) is mounted on the bottom mounting position (111), and the first convex mirror (24) is mounted on the top mounting position (112).

5. The multi-meteor projection structure according to claim 4, characterized in that: An annular light-blocking wall (15) is formed on the bottom surface of the mounting plate (10), the bottom end of the light-blocking wall (15) is close to the top surface of the turntable (22), and a plurality of bottom mounting positions (111) are distributed in an annular array within the light-blocking wall (15); the bottom mounting positions (111) are all rectangular sinks, and a slit (1111) extending along the longitudinal direction of the sink is formed at the bottom of the sink, and the extending direction of the slit (1111) forms an angle with the radial direction and the tangential direction of the light-blocking wall (15); The photoetching sheet (23) is rectangular. When the photoetching sheet (23) is installed in the bottom installation position (111), the slit (1111) is parallel to and corresponds to the second slit in the upper and lower directions. The width of the slit (1111) is greater than the width of the second slit.

6. The multi-meteor projection structure according to claim 5, characterized in that: The photoetched sheet (23) is a coated optical glass sheet, and one corner of the photoetched sheet (23) is formed with a chamfer (231); One corner of the sink is formed with an oblique angle (1112) adapted to the chamfer (231).

7. The multi-meteor projection structure according to claim 4, characterized in that: The multi-meteor projection structure further comprises a prism mounting plate (251) having a plurality of mounting holes; the prisms (25) are all cylindrical and the top surfaces are arranged as inclined planes; the prisms (25) can be mounted in the mounting holes in a one-to-one correspondence; and each prism (25) can be deflected around an axis in the mounting hole to adjust the projection direction of the prism (25).

8. The multi-meteor projection structure according to claim 7, characterized in that: The multi-meteor projection structure further comprises an upper cover plate (40) and a lower cover plate (50), wherein the mounting plate (10) is located between the upper cover plate (40) and the lower cover plate (50); The top surface of the upper cover plate (40) is formed with a plurality of sleeves (41) distributed in an annular array, the sleeves (41) can be sleeved outside the optical path (11) in a one-to-one correspondence, the prism mounting plate (251) can be covered on the top of the sleeve (41), and the prism (25) corresponds to the sleeve (41) in a one-to-one correspondence; The lower cover plate (50) is formed with a plurality of light path cone cylinders (51) extending downward and distributed in a ring array, and a first circuit board (211) on which the first light source (21) is installed blocks the bottom ends of all the light path cone cylinders (51), and the first light sources (21) are located one-to-one in the light path cone cylinders (51); the turntable (22) is installed on the lower cover plate (50) through a pin shaft, and when the turntable (22) rotates, the first slit (221) can rotate to correspond one-to-one with the top end of the light path cone cylinder (51).

9. The multi-meteor projection structure according to claim 1, characterized in that: The turntable (22) is a gear, and the multi-meteor projection structure further comprises a driving mechanism capable of driving the gear to rotate.

10. A multi-meteor starry sky lamp, characterized in that: The multi-meteoric sky lamp comprises: A mounting plate (10), wherein a plurality of light path channels (11) are formed on the mounting plate (10) and a light-transmitting through hole (12) is also provided, wherein the bottom of each of the light path channels (11) is formed with a bottom mounting position (111) and the top of each of the light path channels (11) is formed with a top mounting position (112); A multi-meteor projection structure (20), comprising a plurality of first light sources (21), a turntable (22) having a plurality of first slits (221), a plurality of photolithography sheets (23), a plurality of first convex mirrors (24), and a plurality of prisms (25), wherein each of the photolithography sheets (23) is provided with a second slit, the photolithography sheets (23) are mounted on the bottom mounting position (111), and the first convex mirrors (24) are mounted on the top mounting position (112); when the turntable (22) rotates, the projection of the first slits (221) on the photolithography sheet (23) can intersect with the second slits and form an intersection point, and the intersection point can move along the second slit; the light generated by the first light source (21) can be projected to the outside through the intersection point, the first convex mirror (24), and the prism (25) in sequence; and the projection direction of each prism (25) can be adjusted; A starry sky projection structure (30) comprising a second light source (31), a slide (32) and a lens (33), wherein the slide (32) and the lens (33) are both mounted corresponding to the light-transmitting through hole (12), and light generated by the second light source (31) can be projected to the outside via the slide (32) and the lens (33) in sequence.

11. The multi-meteoric sky lamp according to claim 10, characterized in that: A downwardly extending mounting block (14) is further provided on the side of the mounting plate (10), and a Hall sensor switch (141) is provided on the mounting block (14); A plurality of first slits (221) are distributed in an annular array on the turntable (22), and the extension directions of the first slits (221) respectively form angles with the radial direction and the tangential direction of the turntable (22); a plurality of pairs of detection holes (222) are further provided at the edge of the turntable (22), and the center of one of the detection holes (222) in each pair of the detection holes (222) and the first end of the corresponding first slit (221) are located in the same radial direction of the turntable (22), and the center of the other detection hole (222) and the second end of the corresponding first slit (221) are located in the same radial direction of the turntable (22); The Hall sensor switch (141) is capable of detecting the position of the detection hole (222).

12. The multi-meteoric sky lamp according to claim 10, characterized in that: The multi-meteor projection structure (20) further comprises a prism mounting plate (251) having a plurality of mounting holes; the prisms (25) are all cylindrical and the top surfaces are arranged as inclined planes; the prisms (25) can be mounted in the mounting holes in a one-to-one correspondence; and each prism (25) can be deflected around an axis in the mounting hole to adjust the projection direction of the prism (25).

13. The multi-meteoric sky lamp according to claim 12, characterized in that: The multi-meteor starry sky lamp further comprises an upper cover plate (40) and a lower cover plate (50), wherein the mounting plate (10) is located between the upper cover plate (40) and the lower cover plate (50); The top surface of the upper cover plate (40) is formed with a plurality of sleeves (41) distributed in an annular array, the sleeves (41) can be sleeved one-to-one on the outside of the optical path (11), the prism mounting plate (251) can be covered on the top of the sleeve (41), and the prism (25) corresponds one-to-one to the sleeve (41); the upper cover plate (40) is also provided with a threaded through hole (42), and the lens (33) is mounted in the threaded through hole (42) of the upper cover plate (40) through a threaded cylinder (331); The lower cover plate (50) is formed with a plurality of light path cone cylinders (51) extending downward and distributed in a ring array, and a first circuit board (211) on which the first light source (21) is installed blocks the bottom ends of all the light path cone cylinders (51), and the first light sources (21) are located in the light path cone cylinders (51) in a one-to-one correspondence; the turntable (22) is installed on the lower cover plate (50) via a pin shaft, and when the turntable (22) rotates, the first slits (221) can rotate to correspond to the top ends of the light path cone cylinders (51) in a one-to-one correspondence; The lower cover plate (50) is further formed with a light path cylinder (52) extending downward, and a second circuit board (311) on which the second light source (31) is mounted is located at the bottom end of the light path cylinder (52), and light emitted by the second light source (31) is directed toward the inside of the light path cylinder (52).

14. The multi-meteoric sky lamp according to claim 13, characterized in that: The inner diameter of the light path cylinder (52) gradually decreases from bottom to top; a condenser (35) is also provided at the bottom end of the light path cylinder (52), and the light emitting point of the second light source (31) is located at the focus of the condenser (35); and a second convex mirror (34) is also provided at the top end of the light path cylinder (52).

15. The multi-meteoric sky lamp according to claim 10, characterized in that: A receiving groove (13) is formed on the mounting plate (10), and the light-transmitting through hole (12) passes through the bottom of the receiving groove (13); The starry sky projection structure (30) further comprises a tray (321) capable of being inserted into the accommodating groove (13), and the projection sheet (32) is detachably mounted on the tray (321).

16. The multi-meteoric sky lamp according to claim 10, characterized in that: The multi-meteor starry sky lamp further comprises a housing (100) and a base (200) for supporting the housing (100); the housing (100) is rotatable on the base (200); the mounting plate (10), the multi-meteor projection structure (20) and the starry sky projection structure (30) are all located within the housing (100); and a first projection port (101) corresponding to the prism (25) and a second projection port (102) corresponding to the lens (33) are provided on the top of the housing (100).

17. A method for controlling the projection of multiple meteors by a multi-meteor sky lamp, characterized in that: The multi-meteor starry sky lamp comprises a multi-meteor projection structure (20) and a starry sky projection structure (30); the multi-meteor projection structure (20) comprises, in sequence, a plurality of first light sources (21), a turntable (22) provided with a plurality of first slits (221), a plurality of photoetched sheets (23) arranged corresponding to the first light sources and fixed in position, and a first convex mirror (24); when the turntable (22) rotates, the projection of the first slits (221) on the photoetched sheet (23) can intersect with the second slits and form an intersection point, and the intersection point capable of moving along the second slit; the light generated by the first light source (21) can be projected to the outside through the intersection point and the first convex mirror (24) in sequence; a plurality of detection holes (222) are provided at the edge of the turntable (22) along the circumferential direction; the multi-meteoric sky lamp further comprises at least one Hall sensor switch (141), the Hall sensor switch (141) being arranged relative to the edge of the turntable (22), and the Hall sensor switch (141) being capable of detecting the movement of the detection hole (222) when the turntable (22) rotates; The multi-meteor projection control method comprises the steps of: S1, responding to the sensing signal of the Hall sensor switch (141), adding 1 to the currently recorded number of vias N to obtain a new number of vias N+1, and using the number of vias N+1 as the new number of vias recorded; S2, according to a pre-stored light source control rule, obtaining a light control instruction corresponding to the number of vias N+1; wherein the light control instruction includes a lighting time, a lighting duration, and a shut-off time of each first light source (21) of the plurality of first light sources (21); the pre-stored light source control rule includes a correspondence between different numbers of vias and the light control instruction; S3, controlling the plurality of first light sources (21) to light up and turn off according to the lighting control instruction.

18. The multi-meteor projection control method of the multi-meteor sky lamp according to claim 17, characterized in that: The step S1 also includes the following steps: responding to a multi-meteor projection start signal, initializing the number N of the currently recorded vias to 0, and controlling the turntable (22) of the multi-meteor projection structure (20) to start rotating.

19. The multi-meteor projection control method of the multi-meteor sky lamp according to claim 17, characterized in that: Each of the lighting control instructions in the pre-stored light source control rules is preset and does not change, or each of the lighting control instructions is changed.

20. The multi-meteor projection control method of the multi-meteor sky lamp according to claim 19, characterized in that: The lighting control instructions corresponding to the number of vias are generated instantly and randomly.

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