CN114527620A

CN114527620A - Starry sky projection device

Info

Publication number: CN114527620A
Application number: CN202210421219.3A
Authority: CN
Inventors: 傅江灿
Original assignee: Guangdong Wujiu Technology Co ltd
Current assignee: Guangdong Wujiu Technology Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-05-24
Anticipated expiration: 2042-04-21
Also published as: CN114527620B

Abstract

The invention provides a starry sky projection device, which comprises at least one light beam generator; the light beam generator is arranged on the side opposite to the grain road surface of the condenser lens with grains, and the light beam generated by the light beam generator irradiates the side opposite to the grain road surface of the condenser lens with grains along an incident light path; the imaging lens is positioned on the emergent light path with the line condensing lens, and light beams emitted from the line road surface with the line condensing lens pass through at least one imaging lens along the emergent light path to form moving cloud projection. Compared with the prior art, the invention can greatly reduce the occupied space of the components, reduce the volume of the projection device, reduce the assembly cost and improve the user experience.

Description

Starry sky projection device

Technical Field

The invention relates to the field of projection lamps, in particular to a starry sky projection device.

Background

The starry sky projection device is commonly used in some indoor places, is projection equipment capable of generating a dynamic starry cloud effect, can create a starry sky environment, is beneficial to relieving fatigue and pressure caused by working for one day, and has a good decoration effect.

However, in the prior art, the starry sky projection effect can be generally achieved by means of a light source, an inner condensing lens, an interference filter disc and an outer condensing lens, so that a plurality of components are required, the assembly is troublesome, the projection definition is difficult to adjust, and the user experience is poor; in addition, in the prior art, the light source needs to be powered, so the light source is generally fixed, and the moving star cloud effect is generally achieved by driving the interference filter disk, so if a large star field projection area needs to be created, the area of the interference filter disk needs to be increased, which results in a large volume of the final star field projection device and inconvenience in carrying. Chinese patent document publication No. CN101276523B, for example, discloses a projection apparatus for producing a moving starry sky and cloud-like effects, comprising means for producing a cloud-like effect with at least one incoherent light source, means for producing a moving starry sky with at least one coherent light source, and means for conditioning and supplying electrical power. The means for producing a cloud-like effect with at least one incoherent light source comprises at least one pair of condenser lenses and an interferential filter wheel rotated by a motor, the interferential filter wheel being disposed between the at least one pair of condenser lenses. The apparatus for generating a moving star field using a coherent light source includes a grating disk rotated by a motor and a diffractive optical element disposed between at least one coherent light source and the grating disk. Therefore, the structure of the starry sky projection device in the prior art is complex, adjustment is not only not facilitated, and when a large starry sky projection area needs to be created, the volume of the starry sky projection device needs to be multiplied, and user experience is poor.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a starry sky projection device.

The technical scheme of the invention is realized as follows:

the invention provides a starry sky projection device, which comprises:

at least one light beam generator;

the light beam generator is positioned on the opposite side of the textured road surface of the textured condensing lens, and the light beam generated by the light beam generator irradiates the opposite side of the textured road surface of the textured condensing lens along an incident light path;

the imaging lens is positioned on the emergent light path with the line condensing lens, and light beams emitted from the line road surface with the line condensing lens pass through at least one imaging lens along the emergent light path to form moving cloud projection.

Furthermore, an inner groove is formed in the opposite side of the grain road surface of the condenser lens with grains, and the light beam generator is located in the inner groove; and light emitted by the light beam generator is emitted into the condenser lens with the grains through the inner groove.

Furthermore, the condenser lens with the grains is in a circular truncated cone shape, and the diameter of the side, where the inner groove is located, of the condenser lens with the grains is smaller than that of the side, where the grain surface is located, of the condenser lens with the grains.

Further, a maximum angle a formed by two slant heights on the condenser lens with the texture ranges from 15 ° to 90 °.

Further, the device also comprises a light beam control unit for controlling the light beam generator, and the light beam control unit is used for controlling the light beam generator to adjust the brightness degree of the star cloud in the star cloud projection.

The line-shaped condensing lens is characterized by further comprising a motor driving mechanism for driving the line-shaped condensing lens to rotate for 360 degrees, a rotating shaft of the motor driving mechanism is positioned on the same straight line with a central shaft of the line-shaped condensing lens, and the motor driving mechanism is connected with the line-shaped condensing lens to drive the line-shaped condensing lens to rotate through the motor driving mechanism.

Furthermore, the solar collector comprises an annular fixing piece, the line-containing condensing lens is arranged in a circular ring of the annular fixing piece, and the line-containing condensing lens is fixed on the motor driving mechanism through the annular fixing piece.

Furthermore, the motor driving mechanism comprises a turntable and a first motor for driving the turntable to rotate, and the condenser lens with the grains is fixed on the turntable; the edge of carousel is equipped with annular insection, the output shaft of first motor is connected with the gear and rotates with drive gear, the gear with annular insection meshes mutually in order to drive the carousel rotates.

Furthermore, the bottom of the turntable is provided with an annular limiting groove, a light source circuit board provided with the light beam generator is arranged in the annular limiting groove, and the light beam generated by the light beam generator passes through the annular limiting groove and irradiates on the condensing lens with the grains; when the first motor drives the turntable to rotate, the light source circuit board is not moved.

Further, the motor driving mechanism comprises a first motor, and an output shaft of the first motor is connected with a light source circuit board provided with the light beam generator so as to drive the light source circuit board to rotate; the condenser lens with the grains is fixed on the light source circuit board.

Furthermore, a first elastic contact is arranged on the edge of the light source circuit board, at least one first positive contact and at least one first negative contact are respectively arranged on the light source circuit board, and the light beam control unit is in contact with and electrified with the first conductive elastic sheet through the at least one first positive contact and the at least one first negative contact; the first conductive elastic sheet is positioned on the first positive contact and the first negative contact, and the first conductive elastic sheet is fixed when the first motor drives the light source circuit board to rotate.

Further, the light source circuit board is connected with an output shaft of the first motor through a first rotating support frame.

Further, the device also comprises a first motor control unit for controlling the rotating speed of the first motor, and the first motor is controlled by the first motor control unit to adjust the moving speed of the star cloud in the star cloud projection.

The system further comprises a star projector for generating a star effect, wherein a star projection generated by the star projector is projected on the star cloud projection to form a starry sky projection.

Furthermore, the star projector comprises a laser, a circuit board for the laser, a first grating sheet, a second grating sheet and a second motor, wherein the circuit board is used for working for the laser, the laser is fixed at the center of the circuit board for the laser, and an output shaft of the second motor is connected with the circuit board for the laser to drive the laser to rotate; when the laser rotates, the first grating sheet rotates and the second grating sheet is fixed, and light beams emitted by the laser sequentially pass through the first grating sheet and the second grating sheet to generate moving star projection.

Furthermore, the first grating sheet is fixed on the emitting end of the laser through a fixed cover, and the second grating sheet is fixed on the shell of the starry sky projection device.

Furthermore, a radiator is sleeved outside the laser, and the radiator is abutted to the center of the circuit board for the laser.

The star projector further comprises a second motor control unit for controlling the rotating speed of a second motor, and the second motor control unit is used for controlling the second motor to adjust the moving speed of the stars in the star projection.

The system further comprises a laser control unit for controlling the laser, and the laser control unit is used for controlling the laser to adjust the brightness degree of the stars in the star projection.

Furthermore, at least one second positive electrode contact and at least one second negative electrode contact are respectively arranged on the circuit board for the laser, and the laser control unit is in contact with the second conductive elastic sheet through the at least one second positive electrode contact and the at least one second negative electrode contact to be electrified; the second conductive elastic sheet is located on the second positive contact and the second negative contact, and the second conductive elastic sheet is fixed when the second motor drives the circuit board for the laser to rotate.

Further, the circuit board for the laser is connected with an output shaft of the second motor through a second rotary support frame.

The laser control system further comprises an alternating current-direct current conversion unit, and the alternating current-direct current conversion unit supplies power to the light source control unit, the laser control unit, the first motor control unit and the second motor control unit after being rectified by the rectifying circuit of the alternating current-direct current conversion unit.

Compared with the prior art, the invention has the following advantages: compared with the prior art, the star projection device disclosed by the publication number CN101276523B, the star projection device saves a plurality of parts, thereby greatly reducing the occupied space of the parts and reducing the volume of the projection device; moreover, the light path of the condenser lens with the grains adopted in the application is fixed, and the distance among the lamp beads, the inner condenser lens and the interference filter disc does not need to be adjusted in the assembling process like a projection device disclosed by the publication number CN101276523B, so that the definition of the star cloud projection is ensured, and the assembling difficulty is greatly reduced.

In addition, the motor driving mechanism can drive the line condenser lens to rotate for 360 degrees, the rotating shaft of the motor driving mechanism and the central shaft of the line condenser lens are positioned on the same straight line, and when the line condenser lens rotates, the formed starry sky projection integrally rotates; compared with the prior art, such as the projection apparatus disclosed in CN101276523B, a larger projection area can be obtained with the same other structure. Therefore, under the condition of obtaining the same projection area, the diameter of the condenser lens with the grains can be reduced by half at least compared with the diameter of an interference filter disc in the prior art, so that the size of the starry sky projection device can be greatly reduced, and the user experience is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a starry sky projection apparatus provided in embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a starry sky projection apparatus provided in embodiment 2 of the present invention;

fig. 3 is a schematic structural diagram of a starry sky projection apparatus provided in embodiment 3 of the present invention;

fig. 4 is a schematic structural diagram of a starry sky projection apparatus provided in embodiment 4 of the present invention;

FIG. 5 is a schematic cross-sectional view of a textured condenser lens;

FIG. 6 is a schematic structural diagram of a light source circuit board;

fig. 7 is a schematic structural view of a circuit board for a laser.

The attached drawings are as follows: 1 a light beam generator; 2, a condenser lens with grains; 201 lines; 202 inner grooves; 3 an imaging lens; 4, a motor driving mechanism; 401 a first motor; 402 a turntable; 4021 annular insection; 4022 an annular limit groove; 403 gear wheel; 5, a ring-shaped fixing piece; 6 light source circuit board; 601 a first positive contact; 602 a first negative contact; 7 a first conductive elastic sheet; 8, a first rotating support frame; 9 a star projector; a 901 laser; 9011 fixing cover; 9012 radiator; 902 a circuit board for a laser; 9021 a second positive contact; 9022 a second negative contact; 903 a first grating sheet; 904 a second grating sheet; 905 a second motor; 10 a second rotating support frame; 11 a second conductive dome.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1, the starry sky projection apparatus provided in this embodiment includes: a light beam generator 1; the light source system comprises a line condenser lens 2, lines 201 for generating interference effect are laid on at least one side face of the line condenser lens 2, a light beam generator 1 is located on the opposite side of the line road surface of the line condenser lens 2, and light beams generated by the light beam generator 1 irradiate the opposite side of the line road surface of the line condenser lens 2 along an incident light path; and the imaging lens 3 is positioned on the emergent light path of the textured condensing lens 2, and light beams emitted from the textured road surface of the textured condensing lens 2 form moving cloud projection after passing through the imaging lens 3 along the emergent light path. In this embodiment, the light beam that light beam generator 1 generated shines on the side of taking line condensing lens 2 along incident light, then jet out on the line road surface of taking line condensing lens 2 again, and can the star cloud projection after imaging lens 3 along emergent light path, and need not set up solitary cohesion light lens and interference filter disc in order to form the star cloud projection in addition again, not only reduced the part, moreover when assembling, no longer need adjust LED lamp pearl, the interval between cohesion light lens and the interference filter disc is in order to guarantee the definition of star cloud projection, the equipment degree of difficulty reduces by a wide margin.

As shown in fig. 5, in order to completely irradiate the light beam generated by the light beam generator 1 to the textured condenser lens 2, further, an inner groove 202 is provided on an opposite side of the textured road surface of the textured condenser lens 2, wherein the light beam generator 1 is provided in the inner groove 202 and located at the center of the inner groove 202, so that the light beam generated by the light beam generator 1 is completely irradiated into the textured condenser lens 2 through the inner groove 202, and the light beam generated by the light beam generator 1 is prevented from being emitted to the outside. The light beam generator 1 is arranged in the inner groove 202 to avoid light leakage, and the light beam generator 1 is positioned in the center of the inner groove 202 to enable light emitted by the light beam generator 1 to be incident into the line-equipped condensing lens 2 through the inner groove 202, so that the use efficiency of the light beam generator 1 is improved, and the light incident into the line-equipped condensing lens 2 is prevented from being emitted out from two inclined high surfaces of the line-equipped condensing lens 2 to the greatest extent.

In this embodiment, the light beam generator 1 uses a simulated-lumen light bead to avoid the light emitted by the light bead from being too diffuse. Preferably, the lumen-imitating lamp bead adopted in the embodiment has a light-emitting angle of 30-120 degrees, and the most preferred angle is 60 degrees, on the basis, after the light is condensed by the condenser lens with grains 2, the light incident on the condenser lens with grains 2 can be prevented from being emitted from two inclined high surfaces of the condenser lens with grains 2 to the greatest extent, so that the finally formed brightness of the star-cloud projection effect is insufficient.

Of course, in order to improve the brightness of the finally formed stellar cloud projection effect, a plurality of light beam generators 1, that is, a plurality of lumen-imitating lamp beads, may also be used.

In order to better gather the light emitted by the light beam generator 1 into the condenser lens 2 with texture, the condenser lens 2 with texture in this embodiment is in the shape of a circular truncated cone, wherein the diameter of the side of the inner groove 202 on the condenser lens 2 with texture is smaller than the diameter of the side of the texture, so that the condenser lens 2 with texture can better gather the light emitted by the light beam generator 1.

In this embodiment, the maximum angle a formed by the two slant heights on the condenser lens 2 with the texture is in a range of 15 ° to 90 °, and the combination of the angle range and the simulated lumen lamp bead enables the light emitted by the light beam generator 1 to be basically emitted from the texture surface of the condenser lens 2 with the texture, so that not only is the utilization rate of the light beam generator 1 improved, but also the embodiment can achieve a better satellite cloud projection effect under the light beam generator 1 with the same power compared with the prior art; in the starry sky projection device of the embodiment, under the same light beam generator 1 with the same power, the brightness of the starry cloud projection effect is more than twice that of the existing starry sky projection device, and the definition is higher.

In the embodiment, a plurality of lumen-imitating lamp beads with different colors can be adopted to generate a gorgeous starry sky effect; as mentioned above, in the present embodiment, a single lumen-imitating lamp bead is used, so that a better starry sky projection effect can be achieved, and when the single lumen-imitating lamp bead is used, the power of the lumen-imitating lamp bead of a single color only needs to reach 1w to generate high-definition projection, whereas in the prior art, in the same use environment, 2w is needed to generate the same clear projection effect.

In order to control the brightness of the stars in the stellar cloud projection, the starry sky projection apparatus provided by this embodiment further includes a light beam control unit for controlling the light beam generator 1, and the light beam generator 1 is controlled by the light beam control unit to adjust the brightness of the stars in the stellar cloud projection.

In order to generate a moving star-cloud projection effect, the star field projection apparatus provided by this embodiment further includes a motor driving mechanism 4 for driving the textured condenser lens 2360 ° to rotate, a rotation shaft of the motor driving mechanism 4 is located on the same straight line as a central shaft of the textured condenser lens 2, and the motor driving mechanism 4 is connected to the textured condenser lens 2 to drive the textured condenser lens 2 to rotate through the motor driving mechanism 4. In this embodiment, because the rotation axis of the motor driving mechanism 4 is located on the same straight line as the central axis of the condenser lens with texture 2, the light beam generated by the light beam generator 1 can cover the whole of the condenser lens with texture 2, so that the texture surface of the condenser lens with texture 2 can be fully utilized, compared with the projection device provided by CN101276523B in the prior art, which obviously only can utilize a small part of the interference filter disk thereof as a working pattern, it can be seen that the utilization rate of the surface area of the texture road surface of the condenser lens with texture 2 is higher by adopting the star projection lamp provided by this embodiment, which is beneficial to the reduction of the volume of the device. Therefore, under the condition of obtaining the same projection area, the diameter of the condenser lens 2 with the grains can be reduced by half at least compared with the diameter of an interference filter disc in the prior art, so that the size of the starry sky projection device can be greatly reduced, and the user experience is improved.

In this embodiment, the textured condenser lens 2 may be fixed on the motor driving mechanism 4 by using a fixing member or a fixing bracket, which is not limited in this embodiment. Furthermore, the starry sky projection device provided by this embodiment further includes an annular fixing member 5, the condenser lens 2 with grains is disposed in a circular ring of the annular fixing member 5, and the condenser lens 2 with grains is fixed on the motor driving mechanism 4 through the annular fixing member 5; wherein, the annular fixing member 5 is made of opaque material. In this embodiment, the ring of the annular fixing member 5 can limit the textured condenser lens 2, and the annular fixing member 5 surrounds the textured condenser lens 2 and can prevent light leakage of the textured condenser lens 2.

In this embodiment, specifically, the motor driving mechanism 4 includes a turntable 402 and a first motor 401 for driving the turntable 402 to rotate, the condenser lens 2 with texture is fixed on the turntable 402, and a rotation axis of the turntable 402 is in the same straight line with a central axis of the condenser lens 2 with texture, so that when the turntable 402 rotates around the rotation axis thereof, the condenser lens 2 with texture can rotate around the central axis thereof, and thus the texture surface of the condenser lens 2 with texture can be better utilized to generate a starry sky projection area with a larger area; the edge of the turntable 402 is provided with an annular insection 4021, the output shaft of the first motor 401 is connected with the gear 403 to drive the gear 403 to rotate, and the gear 403 is meshed with the annular insection 4021 to drive the turntable 402 to drive the textured condenser lens 2 to rotate around the central axis.

Specifically, the condenser lens 2 with the texture is fixed on the turntable 402 through the annular fixing member 5, and when the output shaft of the first motor 401 drives the turntable 402 to rotate, the condenser lens 2 with the texture, the annular fixing member 5 and the turntable 402 rotate as a whole and rotate around the central shaft of the condenser lens 2 with the texture.

The bottom of the turntable 402 is provided with an annular limiting groove 4022, the light source circuit board 6 provided with the light beam generator 1 is arranged in the annular limiting groove 4022, and the light beam generated by the light beam generator 1 passes through the annular limiting groove 4022 and irradiates the condensing lens 2 with grains; when the first motor 401 drives the turntable 402 to rotate, the light source circuit board 6 is not moved.

In this embodiment, the light source circuit board 6 and the light beam generator 1 which need to be powered are fixed in the turntable 402 and do not rotate with the rotation of the turntable 402, and the textured condenser lens 2 which does not need to be powered rotates with the rotation of the turntable 402, so that the 360-degree rotation of the star cloud projection effect is realized on the basis that the service lives of the light source circuit board 6 and the light beam generator 1 are not affected; the problem of in the prior art because light beam generator 1 can not 360 rotations and can not realize 360 rotations of the effect of the star cloud projection is solved.

In order to control the moving speed of the star cloud in the star cloud projection effect, the star sky projection apparatus provided in this embodiment further includes a first motor control unit for controlling the rotation speed of the first motor 401, and the first motor control unit controls the first motor 401 to adjust the moving speed of the star cloud in the star cloud projection.

In order to supply power to the starry sky projection device provided in this embodiment, the starry sky projection device provided in this embodiment further includes an ac/dc conversion unit, and the ac/dc conversion unit is rectified by a rectifier circuit thereof to supply power to the light source control unit, the laser 901 control unit, and the first motor control unit.

Example 2

The present embodiment is different from embodiment 1 in that:

as shown in fig. 2, the motor driving mechanism 4 in the starry sky projection apparatus provided by this embodiment includes a first motor 401, an output shaft of the first motor 401 is connected to a light source circuit board 6 equipped with a light beam generator 1 to drive the light source circuit board 6 to rotate; the condenser lens 2 with texture is fixed on the light source circuit board 6, and the central axis of the condenser lens 2 with texture, the central axis of the light beam generator 1 and the rotation axis of the light source circuit board 6 are in the same straight line, so that when the first motor 401 drives the light source circuit board 6 to rotate, the light beam generator 1 and the condenser lens 2 with texture can rotate around the central axes thereof respectively.

Further, as shown in fig. 6, at least one first positive contact 601 and at least one first negative contact 602 are respectively disposed on the light source circuit board 6, and the light beam control unit is in contact with and powered on the first conductive elastic sheet 7 of 602 through the at least one first positive contact 601 and the at least one first negative contact; the first conductive elastic sheet 7 is located on the first positive contact 601 and the first negative contact 602, and when the first motor 401 drives the light source circuit board 6 to rotate, the first conductive elastic sheet 7 is not moved.

In this embodiment, as shown in fig. 6, the first conductive elastic sheet 7 is respectively provided with a positive pin and a negative pin, and the light source circuit board 6 is also respectively provided with a first positive contact 601 and a first negative contact 602, wherein the first positive contact 601 is in contact with the positive electrode of the light source circuit board 6, and the first negative contact 602 is in contact with the negative electrode of the light source circuit board 6, because the first positive contact 601 and the first negative contact 602 on the light source circuit board 6 are circular and are in circle-center with the center of the light source circuit board 6, when the light source circuit board 6 rotates, the first positive contact 601 and the first negative contact 602 also rotate around the circle-center, and because the first conductive elastic sheet 7 is stationary, the first positive contact 601 and the first negative contact 602 are circular, the positive pin of the first conductive elastic sheet 7 is always in contact with the first positive contact 601 when the light source circuit board 6 rotates, and the negative pin of the first conductive elastic sheet 7 is always in contact with the first negative contact 602, so that the light source circuit board 6 can be continuously powered in the rotating process. The first positive contact 601 and the first negative contact 602 may be disposed at an edge of the light source circuit board 6, or may be disposed at a center of the light source circuit board 6, which is not limited herein.

In the embodiment, the light source circuit board 6 is electrified through the fixed first conductive elastic sheet 7, so that the problem of wire winding of the light source circuit board 6 is not needed to be worried about, and the 360-degree rotation of the star cloud projection effect is realized on the basis of not influencing the service lives of the light source circuit board 6 and the light beam generator 1; the problem of in the prior art because there is the electric wire winding in light beam generator 1 and can not realize 360 rotations of the star cloud projection effect is solved.

In this embodiment, fig. 6 is only one embodiment of the light source circuit board 6 in this embodiment, and is not limited to the first positive contact 601 being inside or outside the circular ring of the first negative contact 602, nor limited to the first positive contact 601 and the first negative contact 602 being on the same surface or on surfaces facing away from each other, and this embodiment is not limited herein.

In addition, since the first positive contact 601 and the first negative contact 602 in this embodiment are power supply modules, the power supply modules may be designed to increase or decrease the number of the first positive contact 601 and the first negative contact 602 according to the requirement of the line. For example, since the number of the light beam generators 1 in the present embodiment may be not only 1, but also a plurality of light beam generators 1 capable of emitting light beams of different colors may be provided, in the present embodiment, the number of the first positive contact 601 and the first negative contact 602 is not limited to 1, and the number of the first positive contact 601 and the first negative contact 602 may be increased or decreased according to the number of the light beam generators 1.

In this embodiment, the light source circuit board 6 may be connected to an output shaft of the first motor 401 through the first rotating support frame 8, and the light source circuit board 6, the light beam generator 1 and the condenser lens 2 with texture may be integrally rotated by driving the first rotating support frame 8 to rotate; by means of the first rotating support frame 8, it is more convenient to connect the output shaft of the first motor 401 with the light source circuit board 6, so that the light beam generator 1 can be located at the central point. In this embodiment, the output shaft of the first motor 401 is located at the center of the first rotating support frame 8, and the light beam generator 1 is located above the output shaft of the first motor 401, so as to ensure that the output shaft of the first motor 401, the light beam generator 1, the central shaft of the condenser lens with texture 2 and the central shaft of the light source circuit board 6 are located on the same straight line, so that the light beam generated by the light beam generator 1 can cover the whole of the condenser lens with texture 2, and the texture surface of the condenser lens with texture 2 can be fully utilized. In the embodiment, under the condition of obtaining the same projection area, the diameter of the condenser lens 2 with the grains can be reduced by at least half compared with the diameter of an interference filter disc in the prior art, so that the size of the starry sky projection device can be greatly reduced, and the user experience is improved.

Of course, a fixing slot may be further disposed on the light source circuit board 6, and the light source circuit board 6 and the first motor 401 are connected by the output shaft of the first motor 401. The connection manner between the light source circuit board 6 and the output shaft of the first motor 401 in the present embodiment is not limited thereto.

Example 3

The present embodiment is different from embodiment 1 in that:

as shown in fig. 3, on the basis of embodiment 1, the starry sky projection apparatus provided in this embodiment further includes a starry projector 9 for generating a starry effect, and a starry projection generated by the starry projector 9 is projected on a starcloud projection to form a starry sky projection.

Specifically, the star projector 9 in this embodiment includes a laser 901, a laser circuit board 902 for operating the laser 901, a first grating piece 903, a second grating piece 904, and a second motor 905, where the laser 901 is fixed at the center of the laser circuit board 902, and an output shaft of the second motor 905 is connected to the laser circuit board 902 to drive the laser 901 to rotate; when the laser 901 rotates, the first grating plate 903 rotates while the second grating plate 904 does not move, and a light beam emitted by the laser 901 passes through the first grating plate 903 and the second grating plate 904 in sequence to generate moving star projection. The laser 901 is controlled to work by the laser 901 control unit, and the laser 901 is controlled by the laser 901 control unit to adjust the brightness degree of stars in the star projection; the rotation speed of the second motor 905 is controlled by the second motor control unit, and the second motor 905 is controlled by the second motor control unit to adjust the moving speed of the stars in the star projection.

In this embodiment, the light beam emitted by the laser 901 irradiates on the first grating 903 to form a larger star projection light beam, and then irradiates on the second grating 904, so as to form more star projection effects. The second motor 905 drives the laser 901 and the second grating sheet 904 to rotate, so that a flowable star projection effect is formed. In this embodiment, through fixed first grating piece 903 and the second grating piece 904 that follows laser 901 and rotate, not only can produce more star effects, moreover because first grating piece 903 is fixed and second grating piece 904 rotates, thereby can form existing pivoted star projection effect, the projection effect of the star that does not rotate in addition, thereby make the final projection effect of this embodiment sky projection device have agile effect, the projection effect is more lifelike.

The first grating piece 903 is fixed to the emitting end of the laser 901 through a fixing cover 9011, and the second grating piece 904 is fixed to the casing of the starry sky projection device, so that the second grating piece 904 can rotate along with and fixed to the laser 901.

Further, as shown in fig. 7, a second positive contact 9021 and a second negative contact 9022 are respectively disposed on an edge of the laser circuit board 902, and the laser control unit is in contact with the second conductive elastic piece 11 through the second positive contact 9021 and the second negative contact 9022 to be powered on; the second conductive elastic piece 11 is located on the second positive contact 9021 and the second negative contact 9022, and when the second motor 905 drives the laser circuit board 902 to rotate, the second conductive elastic piece 11 is not moved.

In this embodiment, as shown in fig. 7, the second conductive elastic piece 11 is provided with a positive pin and a negative pin, and the laser circuit board 902 is also provided with a second positive contact 9021 and a second negative contact 9022, respectively, where the second positive contact 9021 is in contact with the positive electrode of the laser circuit board 902, and the second negative contact 9022 is in contact with the negative electrode of the laser circuit board 902, and since the second positive contact 9021 and the second negative contact 9022 on the laser circuit board 902 are annular and are centered on the center of the laser circuit board 902, when the laser circuit board 902 rotates, the second positive contact 9021 and the second negative contact 9022 also rotate around the centers of the circles, and since the second conductive elastic piece 11 is stationary, the second positive contact 9021 and the second negative contact 9022 are annular, it is ensured that the positive pin of the second conductive elastic piece 11 is always in contact with the second positive contact 9021 when the laser circuit board 902 rotates, and the negative pin of the second conductive elastic sheet 11 is always in contact with the second negative contact 9022, so that the circuit board 902 for the laser can be continuously powered in the rotation process. The second positive contact 9021 and the second negative contact 9022 may be disposed at an edge of the laser circuit board 902, or at a center of the laser circuit board 902, which is not limited in this embodiment of the present invention.

In the embodiment, the circuit board 902 for the laser is electrified through the fixed second conductive elastic sheet 11, so that the problem of wire winding is not needed to be worried about, and the 360-degree rotation of the star cloud projection effect is realized on the basis of not influencing the service lives of the circuit board 902 for the laser and the laser 901; the problem that in the prior art, due to the fact that the laser 901 has the phenomenon of wire winding, 360-degree rotation of a star projection effect cannot be achieved is solved.

In this embodiment, fig. 7 is only one embodiment of the laser circuit board 902 in this embodiment, and is not limited to the second positive contact 9021 being inside or outside the circular ring of the second negative contact 9022, nor being limited to the second positive contact 9021 and the second negative contact 9022 being on the same surface or on surfaces facing away from each other, which is not limited herein.

Since the second positive contact 9021 and the second negative contact 9022 in this embodiment are power supply modules, the number of the second positive contact 9021 and the number of the second negative contact 9022 may be increased or decreased according to the design of the line requirement. For example, in order to increase the service life of the laser circuit board 902, a plurality of second positive contacts 9021 and a plurality of second negative contacts 9022 may be additionally provided, so as to avoid that when a certain second positive contact 9021 or a certain second negative contact 9022 loses copper and cannot conduct electricity, electricity can be conducted through another second positive contact 9021 or another second negative contact 9022. Of course, the number of the second positive contact 9021 and the second negative contact 9022 may be increased or decreased due to power matching or circuit power supply requirements, and the embodiment of the present invention is not limited again.

Further, the laser circuit board 902 is connected to an output shaft of the second motor 905 through the second rotating support 10, and the laser circuit board 902, the laser 901 and the first grating plate 903 integrally rotate by driving the second rotating support 10 to rotate; by means of the second rotating support frame 10, it is more convenient for the output shaft of the second motor 905 to be connected with the circuit board 902 for the laser, and it is also convenient for the laser 901 to be positioned and fixed in the center. Of course, a fixed slot may be further disposed on the laser circuit board 902, and the output shaft of the second motor 905 is connected to the fixed slot, so that the laser circuit board 902 and the second motor 905 are connected and fixed. The connection manner between the laser circuit board 902 and the output shaft of the second motor 905 in the present embodiment is not limited to this.

Further, a heat sink 9012 is provided outside the laser 901, and the heat sink 9012 abuts against the center of the laser circuit board 902, so that heat generated by the laser 901 is quickly dissipated around the laser circuit board 902.

In order to supply power to the starry sky projection device provided in this embodiment, the starry sky projection device provided in this embodiment further includes an ac/dc conversion unit, and the ac/dc conversion unit is rectified by a rectifier circuit thereof to supply power to the light source control unit, the laser 901 control unit, the first motor control unit, and the second motor control unit.

Example 4

The present embodiment differs from the above embodiments in that:

as shown in fig. 4, on the basis of embodiment 2, the starry sky projection apparatus provided in this embodiment further includes a starry projector 9 for generating a starry effect, and a starry projection generated by the starry projector 9 is projected on a starcloud projection to form a starry sky projection.

Specifically, the star projector 9 in this embodiment includes a laser 901, a laser circuit board 902 for operating the laser 901, a first grating 903, a second grating 904, and a second motor 905, where the laser 901 is fixed at the center of the laser circuit board 902, and an output shaft of the second motor 905 is connected to the laser circuit board 902 to drive the laser 901 to rotate; when the laser 901 rotates, the first grating plate 903 rotates while the second grating plate 904 does not move, and the light beam emitted by the laser 901 sequentially passes through the first grating plate 903 and the second grating plate 904 to generate moving star projection. The laser 901 is controlled to work by a laser 901 control unit, and the laser 901 is controlled by the laser 901 control unit to adjust the brightness degree of stars in the star projection; the rotation speed of the second motor 905 is controlled by the second motor control unit, and the second motor 905 is controlled by the second motor control unit to adjust the moving speed of the stars in the star projection.

In this embodiment, the light beam emitted by the laser 901 irradiates on the first grating 903 to form a larger star projection light beam, and then irradiates on the second grating 904, so as to form more star projection effects. Since the second motor 905 drives the laser 901 and the second grating sheet 904 to rotate, a dynamic star projection effect is formed. In this embodiment, through fixed first grating piece 903 and the second grating piece 904 that follows laser 901 and rotate, not only can produce more star effects, moreover because first grating piece 903 is fixed and second grating piece 904 rotates, thereby can form existing pivoted star projection effect, the projection effect of the star that does not rotate in addition, thereby make the final projection effect of this embodiment sky projection device have agile effect, the projection effect is more lifelike.

Further, as shown in fig. 7, a second positive contact 9021 and a second negative contact 9022 are respectively arranged on the edge of the laser circuit board 902, and the laser control unit is in contact with the second conductive elastic piece 11 through the second positive contact 9021 and the second negative contact 9022 and is electrified; the second conductive elastic piece 11 is located on the second positive contact 9021 and the second negative contact 9022, and when the second motor 905 drives the laser circuit board 902 to rotate, the second conductive elastic piece 11 is not moved.

Further, the laser circuit board 902 is connected to an output shaft of the second motor 905 through the second rotating support 10, and the laser circuit board 902, the laser 901 and the first grating plate 903 integrally rotate by driving the second rotating support 10 to rotate; by means of the second rotating support frame 10, it is more convenient for the output shaft of the second motor 905 to be connected with the circuit board 902 for the laser, and it is also beneficial for the laser 901 to be fixed. Of course, a fixed slot may be further disposed on the laser circuit board 902, and the output shaft of the second motor 905 is connected to the fixed slot, so that the laser circuit board 902 and the second motor 905 are connected and fixed. The connection manner between the laser circuit board 902 and the output shaft of the second motor 905 in the present embodiment is not limited to this.

Further, a heat sink 9012 is sleeved outside the laser 901, and the heat sink 9012 abuts against the center of the laser circuit board 902, so that heat generated by the laser 901 is dissipated quickly with the laser circuit board 902 as the center.

In summary, in the star field projection apparatus provided by the present invention, the light beam generated by the light beam generator 1 irradiates the opposite side of the textured road surface with the textured condenser lens 2 along the incident light path, then is emitted from the textured road surface with the textured condenser lens 2, and finally enters the imaging lens 3 to form a moving star cloud projection, compared with the prior art, such as the projection apparatus disclosed in publication No. CN101276523B, many components are saved, so that the occupied space of the components is greatly reduced, and the volume of the projection apparatus is reduced; and the 2 light paths of zone line collector lens that adopt in this application have already been fixed to need not still need adjusting lamp pearl, interior condenser lens and interfering the interval between the filter disc like the projection arrangement that publication No. CN101276523B discloses in the equipment, in order to guarantee the definition of planet cloud projection, the equipment degree of difficulty reduces by a wide margin.

In addition, the motor driving mechanism 4 can drive the textured condensing lens to rotate by 2360 degrees, the rotating shaft of the motor driving mechanism 4 and the central shaft of the textured condensing lens 2 are positioned on the same straight line, and when the textured condensing lens 2 rotates, the formed starry sky projection integrally rotates; compared with the prior art, such as the projection apparatus disclosed in CN101276523B, a larger projection area can be obtained with the same other structure. Therefore, under the condition of obtaining the same projection area, the diameter of the condenser lens 2 with the grains can be reduced by half at least compared with the diameter of an interference filter disc in the prior art, so that the size of the starry sky projection device can be greatly reduced, and the user experience is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A starry sky projection arrangement, comprising:

at least one light beam generator;

2. A starry sky projection device as claimed in claim 1, wherein the textured condensing lens is provided with inner grooves on opposite sides of the textured road surface, and the light beam generator is located in the inner grooves; and light emitted by the light beam generator is emitted into the condenser lens with the grains through the inner groove.

3. The starry sky projection device as claimed in claim 2, wherein the textured condenser lens is in the shape of a truncated cone, and the diameter of the textured condenser lens on the side of the inner groove is smaller than the diameter of the textured surface on the side of the inner groove.

4. The star field projection device of claim 3, wherein a maximum angle α formed by the two slant heights on the textured condenser lens is in a range of 15 ° -90 °.

5. A starry sky projection apparatus as claimed in claim 1, further comprising a light beam control unit for controlling the light beam generator, wherein the light beam control unit controls the light beam generator to adjust the brightness of the stars in the projection of the stars.

6. The starry sky projection device as claimed in claim 1, further comprising a motor driving mechanism for driving the textured condenser lens to rotate 360 °, wherein a rotation center of the motor driving mechanism is aligned with a central axis of the textured condenser lens, and the motor driving mechanism is connected to the textured condenser lens to drive the textured condenser lens to rotate through the motor driving mechanism.

7. The starry sky projection device as claimed in claim 6, further comprising an annular fixing member, wherein the textured condensing lens is disposed in the annular fixing member, and the textured condensing lens is fixed to the motor driving mechanism through the annular fixing member.

8. The starry sky projection device as claimed in claim 6, wherein the motor driving mechanism includes a turntable and a first motor for driving the turntable to rotate, and the patterned condenser lens is fixed on the turntable; the edge of carousel is equipped with annular insection, the output shaft of first motor is connected with the gear and rotates with drive gear, the gear with annular insection meshes mutually in order to drive the carousel rotates.

9. The starry sky projection device as claimed in claim 8, wherein an annular limiting groove is formed in the bottom of the rotary plate, a light source circuit board provided with the light beam generator is arranged in the annular limiting groove, and a light beam generated by the light beam generator passes through the annular limiting groove and irradiates the patterned condenser lens; when the first motor drives the turntable to rotate, the light source circuit board is not moved.

10. A starry sky projection device as claimed in claim 6, wherein the motor driving mechanism comprises a first motor, an output shaft of the first motor is connected to a light source circuit board provided with the light beam generator to drive the light source circuit board to rotate; the condenser lens with the grains is fixed on the light source circuit board.

11. The starry sky projection device as claimed in claim 10, wherein the light source circuit board is respectively provided with at least one first positive contact and at least one first negative contact, and the light beam control unit is in contact with the first conductive elastic piece through the at least one first positive contact and the at least one first negative contact to be electrified; the first conductive elastic sheet is positioned on the first positive contact and the first negative contact, and the first conductive elastic sheet is fixed when the first motor drives the light source circuit board to rotate.

12. The starry sky projection device as claimed in claim 10, wherein the light source circuit board is connected to an output shaft of the first motor through a first rotating support frame.

13. A starry sky projection device as claimed in claim 8 or 10, further comprising a first motor control unit for controlling a rotation speed of the first motor, wherein the first motor is controlled by the first motor control unit to adjust a moving speed of the stars in the star cloud projection.

14. The starry sky projection device as claimed in claim 1, further comprising a starry projector for generating a starry effect, wherein the starry projection generated by the starry projector is projected on the starcloud projection to form a starry sky projection.

15. The starry sky projection device as claimed in claim 14, wherein the starry projector comprises a laser, a laser circuit board for operating the laser, a first grating sheet, a second grating sheet and a second motor, the laser is fixed at the center of the laser circuit board, and an output shaft of the second motor is connected with the laser circuit board to drive the laser to rotate; when the laser rotates, the first grating sheet rotates and the second grating sheet is fixed, and light beams emitted by the laser sequentially pass through the first grating sheet and the second grating sheet to generate moving star projection.

16. A starry sky projection device as claimed in claim 15, wherein the first grating plate is fixed on the exit end of the laser through a fixing cover, and the second grating plate is fixed on the housing of the starry sky projection device.

17. A starfield projection device as claimed in claim 15, wherein said laser housing has a heat sink, said heat sink abutting the center of said laser circuit board.

18. The sky projection device as claimed in claim 15, further comprising a second motor control unit for controlling a rotation speed of a second motor, wherein the second motor is controlled by the second motor control unit to adjust a moving speed of stars in the star projection.

19. A starry sky projection arrangement as claimed in claim 15, further comprising a laser control unit for controlling the laser, the laser being controlled by the laser control unit to adjust the brightness of the stars in the starry projection.

20. The starry sky projection device as claimed in claim 15, wherein the circuit board for the laser is respectively provided with at least one second positive electrode contact and at least one second negative electrode contact, and the laser control unit is in contact with and powered on the second conductive elastic piece through the at least one second positive electrode contact and the at least one second negative electrode contact; the second conductive elastic sheet is located on the second positive contact and the second negative contact, and the second conductive elastic sheet is fixed when the second motor drives the circuit board for the laser to rotate.

21. The starry sky projection device as claimed in claim 15, wherein the circuit board for the laser is connected to an output shaft of the second motor through a second rotary supporting frame.

22. The starry sky projection device as claimed in claim 1, further comprising an ac-dc conversion unit, wherein the ac-dc conversion unit is rectified by a rectifying circuit thereof to supply power to the light source control unit, the laser control unit, the first motor control unit and the second motor control unit.