Starry sky projection lamp

Abstract

The utility model discloses a starry sky projection lamp. The starry sky projection lamp comprises a base, wherein the base comprises a containing cavity and a projection opening; the light source assembly is contained in the containing cavity. The optical assembly is located above the light source assembly. The driving assembly drives the optical assembly to rotate; the first optical lens is installed on the base, the first optical lens comprises a first outer surface and a first inner surface, the first outer surface is a horizontal plane and is upwards exposed out of the projection opening, and the second inner surface is an arc-shaped surface; the second optical lens is located between the optical assembly and the first optical lens, the second optical lens comprises a second outer surface and a second inner surface, the second outer surface is an arc-shaped surface, the second inner surface is a horizontal plane, and the horizontal plane is arranged towards the optical assembly. The light emitted by the light source assembly is refracted by the first inner surface and is closer to the normal, then the light is projected outwards from the first outer surface to form the strong light area and the weak light area, the strong light area forms a main projection range, and the weak light area forms a larger projection light trailing illustration effect.

Description

[Technical field]

[0001] The utility model relates to the technical field of starry sky projection lamps, in particular to a starry sky projection lamp with bidirectional movement of projection effect. [Background technology]

[0002] An existing starry sky projection lamp comprises a housing, an LED light source mounted on the housing, an interference plate located above the LED light source, a focusing lens located above the interference plate, a motor assembly, and a rotor of the motor assembly fixed with the interference plate. The housing comprises an inner cavity and a projection hole connected to the inner cavity, the focusing lens is mounted on the projection hole, the focusing lens comprises an arc-shaped surface convexly extending away from the LED light source, comprising a middle area and an outer edge area, the light emitted by the LED light source passes through the interference plate, a part of the light passing through the interference plate passes through the middle area of ​​the focusing lens and is projected outward, and another part of the light passing through the interference plate is reflected back by the outer edge area, resulting in a smaller projection range, and the light is concentrated in the outward projection range formed by the middle area, and a single lens has a long focal length, a large product volume, and unclear projection.

[0003] Therefore, it is necessary to design a new starry sky projection lamp to solve the above problems. [Contents of the utility model]

[0004] In view of the problems faced by the background technology, the utility model provides a method of increasing the trailing projection effect of the starry sky projection lamp and shortening the focal length by using a first optical lens pointing horizontally upward and a second optical lens pointing arc-shaped upward.

[0005] In order to achieve the above purpose, the utility model adopts the following technical means:

[0006] A starry sky projection lamp comprises: a base, comprising a receiving cavity and a projection port connected to the receiving cavity in upper and lower directions; at least one light source assembly received in the receiving cavity; an optical assembly located above the light source assembly; a driving assembly driving the optical assembly to rotate; a first optical lens mounted on the base, the first optical lens comprising a first outer surface and a first inner surface arranged opposite to each other, the first outer surface being a horizontal plane and exposed upwardly at the projection port, the first inner surface being an arcuate surface and protruding downwardly into the receiving cavity; a second optical lens located between the optical assembly and the first optical lens, the second optical lens comprising a second outer surface and a second inner surface arranged opposite to each other, the second outer surface being an arcuate surface arranged opposite to the second inner surface, the second inner surface being a horizontal plane arranged toward the optical assembly.

[0007] Furthermore, a distance between the first inner surface and the second outer surface is 0 mm to 6 mm.

[0008] Furthermore, the curvature of the first outer surface is the same as the curvature of the second inner surface.

[0009] Furthermore, the base includes a base body located in the receiving cavity, the optical component is movably mounted on the base body, the optical component includes at least one focusing optical sheet, the base body includes an upwardly penetrating through hole and at least one supporting portion arranged toward the center of the through hole, the second optical lens is mounted on the through hole, and the supporting portion supports the second optical lens upward.

[0010] Furthermore, the base body includes a plurality of buckle parts arranged around the through hole, and each of the buckle parts limits the movement of the second optical lens in the horizontal direction and the up-down direction.

[0011] Furthermore, the width of the second inner surface is 1 / 4 to 1 times the width of the focus separation optical sheet.

[0012] Furthermore, the optical component includes a first focus splitting optical sheet and a second focus splitting optical sheet stacked on each other, and the texture of the first focus splitting optical sheet intersects with the projection of the texture of the second focus splitting optical sheet in a horizontal direction.

[0013] Further, the optical component includes an outer gear ring arranged around the first focus-splitting optical sheet and the second focus-splitting optical sheet, the outer gear ring includes a main body portion, an upper shaft portion and a lower shaft portion extending upward from the main body portion, the base includes a seat body located in the accommodating cavity, the seat body includes an upper seat and a lower seat fixed to each other, the upper shaft portion is movably connected to the upper seat, the lower shaft portion is movably connected to the lower shaft portion, and the second corrugated sheet is fixed to the upper seat.

[0014] Furthermore, the starry sky projection lamp further comprises an interference sheet fixed to the lower seat, and the first focusing optical sheet and the second focusing optical sheet form mutual cutting in different spaces with the interference sheet.

[0015] Furthermore, during one rotation of the optical component, the positions where the first focusing optical sheet and / or the second focusing optical sheet cut the interference sheet do not repeat, and the projection light effect formed by the first focusing optical sheet and the projection light effect formed by the second focusing optical sheet at least partially overlap.

[0016] Furthermore, the lower seat includes a light-transmitting hole penetrating the upper and lower surfaces thereof and a light-shielding portion surrounding the light-transmitting hole, the interference sheet is mounted on the light-transmitting hole, and the light source assembly protrudes upward into the light-shielding portion.

[0017] Compared with the prior art, the starry sky projection lamp of the utility model has the following beneficial effects:

[0018] The optical component is located above the light source component, and the driving component drives the optical component to rotate; the first optical lens is installed on the base, the first optical lens includes a first outer surface and a first inner surface that are relatively set, the first outer surface is a horizontal surface, and is upwardly exposed to the projection port, and the second inner surface is an arc surface, and is downwardly protruding into the receiving cavity; the second optical lens is located between the optical component and the first optical lens, the second optical lens includes a second outer surface and a second inner surface that are relatively set, the second outer surface is an arc surface, the arc surface is relatively set to the second inner surface, the second inner surface is a horizontal surface, and the horizontal surface is set toward the optical component, because the light emitted by the light source component is refracted from the air through the first inner surface and is closer to the normal line, and then the light is projected outward from the first outer surface to form a strong light area in the middle and a weak light area surrounding the strong light area, the strong light area forms the main projection range, and the weak light area forms a larger projection light tailing ethereal effect, the arc surface of the second optical lens upwardly strengthens the light effect of the high-definition projection in the middle area, so that the strong light area and the weak light drive effect are adapted, and the projection focal length is shortened.

Brief Description of the Drawings

[0019] Figure 1 A three-dimensional diagram of the starry sky projection lamp of the first embodiment of the utility model;

[0020] Figure 2 for Figure 1 A top view of

[0021] Figure 3 for Figure 2 Section view along the AA section line;

[0022] Figure 4 for Figure 1 A three-dimensional diagram of the center body, light source assembly, drive assembly, and optical assembly;

[0023] Figure 5 for Figure 4 3D exploded view of

[0024] Figure 6 for Figure 5 A three-dimensional exploded view of the middle structure;

[0025] Figure 7 for Figure 5 A schematic diagram of a first focusing optical sheet or a second focusing optical sheet;

[0026] Figure 8 A three-dimensional diagram of a starry sky projection lamp according to a second embodiment of the present utility model;

[0027] Fig. 9 for Figure 8 A top view of

[0028] Fig.10 for Fig. 9 Section view along the BB section line;

[0029] Fig.11 A three-dimensional diagram of a starry sky projection lamp according to a third embodiment of the present utility model;

[0030] Fig.12 for Fig.11 A top view of

[0031] Fig.13 for Fig.12 Section view along CC section line;

[0032] Fig.14 A three-dimensional diagram of a starry sky projection lamp according to a fourth embodiment of the present utility model;

[0033] Fig.15 for Fig.14 A top view of

[0034] Fig.16 for Fig.15 Section view along DD section line;

[0035] Description of the accompanying drawings of the specific embodiments:

[0036] Star Projection Lamp 100 Shell 1 Housing 11 Accommodation cavity 111 Projection port 112 Projection hole 113 Clamping piece 12 Clamping hole 121 Step 122 Fixed foot 123 Base body 2 Next seat 21 Matrix 211 Light hole 212 Light blocking ring 213 Limiting portion 214 Upper fixing portion 215 Lower fixing portion 216 Seat 22 Main body 221 Through hole 222 Supporting part 223 Buckle portion 224 Limiting section 225 Bump 226 Positioning unit 227 Light source component 3 Radiator 31 Light board 32 Focusing component 33 Fixed frame 331 Spotlight Cup 332 Optical components 4 First focusing optical sheet 41 Second focus separation optical sheet 42 Outer gear ring 43 Interference sheet 5 First optical lens 6 First outer surface 61 First inner surface 62 First side 63 Second optical lens 7 The second outer surface 71 Second inner surface 72 Second side 73 Projection component 8 Fixed shell 81 Light source board 82 First condenser lens 83 Second condenser lens 84 Slide 85 The third condenser lens 86 Lamp body assembly 9 The third optical lens 10 The third outer surface 101 The third inner surface 102 Fourth optical lens 20 Fourth outer surface 201 Fourth inner surface 202 Lighting components 30 Drive assembly 40 [Specific implementation method]

[0037] In order to facilitate a better understanding of the purpose, structure, characteristics and functions of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.

[0038] like Figures 1 to 7 As shown, a starry sky projection lamp 100 of the first embodiment of the utility model includes a shell 1, a base 2 accommodated in the shell 1, a light source assembly 3 installed on the base 2, an optical assembly 4, an interference plate 5 located below the optical assembly 4, a first optical lens 6 and a second optical lens 7 located above the optical assembly 4, and a driving assembly 40 for driving the optical assembly 4.

[0039] like Figure 1 , Figure 5 and Figure 6As shown, the housing 1 includes a shell 11 and a clamping member 12 mounted on the shell 11. The shell 11 includes a receiving cavity 111, an upper shell and a lower shell forming the receiving cavity 111, a projection port 112 and a projection hole 113 which are connected to the receiving cavity 111 from top to bottom. The clamping member 12 includes a clamping hole 121 arranged around the projection port 112, a step portion 122 extending toward the clamping hole 121, and a plurality of fixing legs 123 arranged around the clamping hole 121. The clamping hole 121 is aligned with the projection port 112 from top to bottom. The plurality of fixing legs 123 are fixed to the periphery forming the projection hole 113. The seat 2 is accommodated in the receiving cavity 111 and fixed to the shell 11. The seat body 2 includes an upper seat 22 and a lower seat 21 that cooperate with each other. The lower seat 21 includes a base 211, a light-transmitting hole 212 that passes through the base 211 from top to bottom, a light-blocking ring 213 and a limiting portion 214 that are arranged around the light-transmitting hole 212, and a plurality of upper fixing portions 215 and a plurality of lower fixing portions 216 that are arranged around the light-transmitting hole 212. The limiting portion 214 is located above the light-transmitting hole 212, and the plurality of lower fixing portions 216 are located inside the plurality of upper fixing portions 215. The upper seat 22 includes a main body 221, a through hole 222 that passes through the main body 221 from top to bottom, at least one supporting portion 223 that is arranged toward the center of the through hole 222, at least one buckle portion 224 that is arranged around the through hole 222, a limiting portion 225 that is arranged around the buckle portion 224, a protrusion 226 that is at least connected to the limiting portion 225, and a plurality of positioning portions 227 that are arranged around the limiting portion 225. The upper fixing parts 215 are fixed to the positioning parts 227 in a one-to-one correspondence. In this embodiment, the through hole 222 is aligned with the projection port 112 in the vertical direction, and the through hole 222 is aligned with the light-transmitting hole 212 in the vertical direction. A plurality of the supporting parts 223 are arranged toward the center of the through hole 222. A plurality of the buckle parts 224 are formed by extending upward from the base 211, and the plurality of the buckle parts 224 are arranged around the through hole 222 in a spaced manner, and each of the buckle parts 224 includes an elastic arm and a hook part arranged from the elastic arm toward the through hole 222. The limiting part 225 is formed by extending downward from the base 211, and the limiting part 225 is arranged around the limiting part 214 or the limiting part 214 is arranged around the limiting part 225. The limiting part 225 is located at the lower side of the plurality of supporting parts 223. A plurality of protrusions 226 are arranged along the limiting portion 225 , and each of the protrusions 226 includes a first portion and a second portion connected to each other, wherein the first portion extends from the limiting portion 225 toward the through hole 222 , and the second portion extends downward from the main body 221 .

[0040] like Figure 3 and Figure 5As shown, the light source assembly 3 is installed on the lower seat 21. The light source assembly 3 includes a heat sink 31, a lamp board 32 installed above the heat sink 31, and a focusing assembly 33. The focusing assembly 33 includes a fixing frame 331, a focusing cup 332 installed on the fixing frame 331, the fixing frame 331 is fixed to the lamp board 32, the lamp beads on the lamp board 32 protrude into the focusing cup 332, a plurality of the lower fixing parts 216 are fixed to the lamp board 32, and a plurality of the lower fixing parts 216 are arranged around the fixing frame 331. The heat sink 31 is fixed to the fixing frame 331 by screws, and the focusing cup 332, the lamp beads and the heat sink 31 are arranged in an aligned manner up and down. The fixing frame 331 protrudes upward into the light blocking ring 213, that is, the light blocking ring 213 is arranged around the fixing frame 331, and the focusing cup 332 is arranged toward the light transmission hole 212.

[0041] like Figure 3 , Figure 5 and Figure 7As shown, the optical component 4 includes at least one focus splitting optical sheet and an outer gear ring 43 arranged around the first focus splitting optical sheet 41, and the focus splitting optical sheet refracts, reflects, and diffusely reflects light. The upper surface of the focus splitting optical sheet includes a plurality of convex portions P1 and a plurality of concave portions P2, and the concave portions P2 are arranged alternately with the convex portions P1. The focus splitting optical sheet makes the imaging focal lengths of the plurality of convex portions P1 different by the difference in height and / or shape of the plurality of convex portions P1, or the plurality of convex portions P1 of the focus splitting optical sheet are arranged in a focal gradient mode, thereby achieving the effect of being divided into a plurality of different focal lengths, and the brightness and / or range of the projections of the plurality of convex portions P1 with different focal lengths are different. The angle formed by one side surface of the convex portion P1 and the horizontal plane is 0° to 80°, which facilitates the molding of the convex portion P1. The concave portion P2 is formed between two adjacent convex portions P1, and at least some of the adjacent two convex portions P1 have different heights, and at least some of the adjacent two convex portions P1 have different orientations. At least part of the convex portion P1 has total reflection of light at the position where it connects to the concave portion P2. In this embodiment, the optical component 4 includes a plurality of the focus splitting optical sheets stacked on each other, which can be defined as at least a first focus splitting optical sheet 41 and a second focus splitting optical sheet 42, and the outer gear ring 43 is arranged around the first focus splitting optical sheet 41 and the second focus splitting optical sheet 42. The texture of the first focus splitting optical sheet 41 includes a plurality of first protrusions 226 and a plurality of first concave portions, the first concave portions are formed between two adjacent first protrusions 226, the first protrusions 226 and the first concave portions are alternately arranged to jointly constitute the surface texture of the first focus splitting optical sheet 41, at least part of the heights of the two adjacent first protrusions are different, and at least part of the orientations of the two adjacent first protrusions are different. The texture of the second focus splitting optical sheet 42 includes a plurality of second protrusions and a plurality of second concave portions, the second protrusions and the second concave portions are alternately arranged to jointly constitute the surface texture of the second focus splitting optical sheet 42, at least part of the heights of the two adjacent second protrusions are different, at least part of the orientations of the two adjacent second protrusions are different, and the second concave portions are formed between two adjacent second protrusions. At least part of the second convex portion is stacked with the first convex portion or the first concave portion in the up-down direction, and at least part of the second concave portion is stacked with the first convex portion or the first concave portion in the up-down direction, that is, the texture of the first defocusing optical sheet 41 and the texture of the second defocusing optical sheet 42 are intersected in the horizontal direction, so that the textures of the two are mutually cut, and the area of ​​each texture is refined. At least part of the projection optics formed by the first convex portion is located in the projection dark area formed by the second concave portion, or at least part of the projection optics formed by the first convex portion overlaps with the projection optics formed by the second convex portion. In other words, the projection light effect formed by the first defocusing optical sheet 41 and the projection light effect formed by the second defocusing optical sheet 42 exist alternately or at least partially overlap.The outer gear ring 43 includes a main body, an upper shaft portion and a lower shaft portion extending upward from the main body. The main body includes a mounting hole extending through its upper and lower surfaces, a support block arranged toward the center of the mounting hole, and a gear ring portion arranged around the mounting hole. The upper shaft portion and the lower shaft portion are located on the upper and lower sides of the gear ring portion. The first focusing optical sheet 41 and the second focusing optical sheet 42 are accommodated in the mounting hole, and the support block supports the first focusing optical sheet 41 upward. The limiting portion 214 abuts against the support block upward, the lower shaft portion is arranged around the limiting portion 214 or the limiting portion 214 is arranged around the lower shaft portion, the upper shaft portion is arranged around the limiting portion 225 or the limiting portion 225 is arranged around the upper shaft portion. In this embodiment, the limiting portion 214 limits the lower shaft portion from moving to the right, and the limiting portion 225 limits the upper shaft portion from moving to the left. The first part of the protrusion 226 is located between the limiting part 225 and the upper shaft part in the left-right direction, and a plurality of the first parts reduce the contact area between the limiting part 225 and the upper shaft part in the horizontal direction. The second part of the protrusion 226 is located between the main body 221 and the upper shaft part in the up-down direction, and a plurality of the second parts reduce the contact area between the limiting part 225 and the upper shaft part in the up-down direction. The distances from the first defocusing optical sheet 41 and the second defocusing optical sheet 42 to the focusing cup 332 are different. The light-transmitting area of ​​the interference sheet 5 is greater than or equal to the light-transmitting area of ​​the focusing cup 332. The light-transmitting area of ​​the first defocusing optical sheet 41 is equal to the light-transmitting area of ​​the second defocusing optical sheet 42. The light-transmitting surface of the first defocusing optical sheet 41 or the light-transmitting area of ​​the second defocusing optical sheet 42 is 1 / 2 to 3 times, preferably 1 to 2 times, of the light-transmitting area of ​​the interference sheet 5. The distance between the interference sheet 5 and the first defocusing optical sheet 41 in the vertical direction is: 1mm to 16mm, preferably in the range of 2mm to 12mm, including the endpoint values. In this embodiment, the light-transmitting area of ​​the first defocusing optical sheet 41 or the second defocusing optical sheet 42 is between 1 and 3 times the light-transmitting area of ​​the interference sheet 5, preferably 2 times. The texture of the first defocusing optical sheet 41 and the texture of the second defocusing optical sheet 42 respectively form different spatial cuts with the texture of the interference sheet 5, subdividing the texture, strengthening the spatial layering of the projection light effect, and increasing the density of the projection light effect, which is more like the feeling of clouds in the sky. During the rotation of the optical component 4, the positions where the first defocusing optical sheet 41 or the second defocusing optical sheet 42 cut with the interference sheet 5 do not repeat. The textures corresponding to the first defocusing optical sheet 41 and the second defocusing optical sheet 42 in the vertical direction are at least partially inconsistent.The first focusing optical sheet 41 and the second focusing optical sheet 42 have the same rotation direction and different speeds. Of course, the first focusing optical sheet 41 and the second focusing optical sheet 42 can have the same or opposite rotation directions and the same or different speeds.

[0042] like Figure 2 and Figure 5 and Figure 6 As shown, the first optical lens 6 is installed in the clamping hole 121. The first optical lens 6 includes a first outer surface 61, a first inner surface 62 arranged opposite to the first outer surface 61, and a first side surface 63 connecting the first outer surface 61 and the first inner surface 62. The first outer surface 61 is a horizontal surface. The first outer surface 61 is exposed upward to the projection opening 112, and the side wall forming the projection opening 112 blocks the first outer surface 61 from moving upward. The width of the first outer surface 61 ranges from 10 mm to 80 mm, preferably from 20 mm to 60 mm, including the end points. The first inner surface 62 is an arcuate surface, which protrudes downward into the receiving cavity 111, and the step portion 122 supports the periphery of the first inner surface 62 upward. The first side surface 63 is a vertical surface, and the first side wall is received in the clamping hole 121 and is located between the step portion 122 and the projection opening 112. The sum of the focal lengths of the two protrusions 226 is less than 3 / 4 times the focal length of the first optical lens 6 .

[0043] like Figure 2 and Figure 5 and Figure 6As shown, the second optical lens 7 is installed in the through hole 222 and is aligned with the first optical lens 6 in the vertical direction. The second optical lens 7 includes a second outer surface 71, a second inner surface 72 arranged opposite to the second outer surface 71, and a second side surface 73 connecting the second outer surface 71 and the second inner surface 72. The second outer surface 71 is an arc surface, the second inner surface 72 is a horizontal surface, and the second side surface 73 is a vertical surface. The first inner surface 62 and the second outer surface 71 have the same arc, and the first outer surface 61 and the second inner surface 72 are parallel to each other. The width of the first outer surface 61 or the width of the second inner surface 72 is greater than or equal to the width of the light-transmitting surface of the focusing cup 332. The width of the second inner surface 72 is equal to the width of the first outer surface 61. The support portion 223 extends in the horizontal direction and supports the second inner surface 72 upwardly. The elastic arm of the buckle portion 224 forms a horizontal limit for the second optical lens 7, and the hook portion of the buckle portion 224 blocks the second outer surface 71 from moving upward. The second outer surface 71 is arranged toward the first inner surface 62, and there is a gap between the second outer surface 71 and the first inner surface 62, and of course the two may contact each other. The distance between the second outer surface 71 and the first inner surface 62 is 0 mm to 20 mm, preferably in the range of 0 mm to 10 mm, including the endpoint values. The second inner surface 72 is arranged toward the second focusing optical sheet 42, and there is a gap between the second inner surface 72 and the second focusing optical sheet 42. The distance between the second inner surface 72 and the second focusing optical sheet 42 is: 2 mm to 15 mm, preferably in the range of 3 mm to 10 mm, including the endpoint values. The width of the first outer surface 61 or the second inner surface 72 is between 1 / 4 times and 1 times the width of the first focusing optical sheet 41 or the second focusing optical sheet 42. The drive assembly 40 includes a gear that cooperates with the gear ring portion. The light beam emitted by the light source assembly 3 passes through the first focusing optical sheet 41, the second focusing optical sheet 42, the first optical lens 6 and the second optical lens 7 in sequence. The light beam is refracted and / or reflected when passing through the first focusing optical sheet 41 and the second focusing optical sheet 42. After passing through the first focusing optical sheet 41 assembly, the light beam is refracted when passing through the second outer surface 71, and then the light beam is refracted when passing through the first inner surface 62.

[0044] like Figure 1 and Figure 3As shown, the starry sky projection lamp 100 also includes a projection component 8 installed on the housing 1. The projection component 8 includes a fixed shell 81, a light source board 82 fixed to the fixed shell 81, at least one first condenser lens 83, a second condenser lens 84, a projection film 85, and at least one third condenser lens 86 located above the light source board 82. The fixed shell 81 includes a receiving groove and a first shell and a second shell formed in the receiving groove. The light source board 82 includes a lamp bead protruding upward into the receiving groove, and the side of the light source board 82 away from the lamp bead is fixed to the heat sink 31. The power of the lamp bead is defined as: between 1.5W and 6.5W. The first condenser lens 83, the second condenser lens 84, the projection film 85, and the third condenser lens 86 are all fixed between the first shell and the second shell, and the first shell and the second shell are both provided with upper and lower fixed positions corresponding to the first condenser lens 83, the second condenser lens 84, the projection film 85, and the third condenser lens 86. The third condenser lens 86 is exposed upwards in the projection hole 113, and the width of the projection hole 113 is smaller than the width of the first outer surface 61. The distance between the projection sheet 85 and the third condenser lens 86 is greater than that between the projection sheet 85 and the second condenser lens 84. The projection sheet 85 is provided with at least a pattern that can project star spots, and the multiple star spots are scattered on the projection effect formed by the optical component 4. Compared with the traditional green laser, the cost is lower and the projected star effect is more realistic.

[0045] like Figures 8 to 10As shown in the figure, it is the second embodiment of the utility model. The structure of the starry sky projection lamp 100 of this embodiment is substantially the same as that of the second embodiment, except that the first optical lens 6 is installed in the clamping hole 121. The first optical lens 6 includes a first outer surface 61, a first inner surface 62 arranged opposite to the first outer surface 61, and a first side surface 63 connecting the first outer surface 61 and the first inner surface 62. The first outer surface 61 is upwardly exposed to the projection opening 112, and the side wall of the projection opening 112 is formed to block the upward movement of the first outer upper surface. The first inner surface 62 is an arc-shaped surface, which protrudes downward into the receiving cavity 111, and the step portion 122 supports the periphery of the first inner surface 62 upward. The first side surface 63 is a vertical surface, and the first side wall is received in the clamping hole 121 and is located between the step portion 122 and the projection opening 112. The second optical lens 7 is installed in the through hole 222 and is aligned with the first optical lens 6 in the upper and lower directions. The second optical lens 7 includes a second outer surface 71, a second inner surface 72 arranged opposite to the second outer surface 71, and a second side surface 73 connecting the second outer surface 71 and the second inner surface 72. The second outer surface 71 is a horizontal surface, the second inner surface 72 is an arc surface, and the second side surface 73 is a vertical surface. The support portion 223 supports the second inner surface 72 upward, and the support portion 223 includes an inclined surface in contact with the second inner surface 72. The elastic arm of the buckle portion 224 forms a horizontal limit for the second optical lens 7, and the hook portion of the buckle portion 224 blocks the second outer surface 71 from moving upward. The second outer surface 71 is arranged toward the first inner surface 62, and there is a gap between the second outer surface 71 and the first inner surface 62, and of course the two can also contact each other. The second inner surface 72 is arranged toward the second defocusing optical sheet 42, and there is a gap between the second inner surface 72 and the second defocusing optical sheet 42. The area of ​​the first outer surface 61 is equal to the area of ​​the second inner surface 72.

[0046] like Figures 11 to 13As shown, it is the third embodiment of the utility model. The structure of the starry sky projection lamp 100 of this embodiment is roughly the same as that of the first embodiment, and the difference is that the first optical lens 6 and the second optical lens 7 can be integrally formed or separately formed. The first optical lens 6 is installed in the clamping hole 121. The first optical lens 6 includes a first outer surface 61, a first inner surface 62 arranged opposite to the first outer surface 61, and a first side surface 63 connecting the first outer surface 61 and the first inner surface 62. The first outer surface 61 is an arc surface, the first inner surface 62 is a horizontal surface, and the first outer surface 61 is exposed upward to the projection port 112. The second optical lens 7 is aligned with the first optical lens 6 in the upper and lower parts. The second optical lens 7 includes a second outer surface 71, a second inner surface 72 arranged opposite to the second outer surface 71, and a second side surface 73 connecting the second outer surface 71 and the second inner surface 72. The second outer surface 71 is a horizontal surface, the second inner surface 72 is an arcuate surface, the second inner surface 72 and the first inner surface 62 are attached to each other or there is a gap between the second inner surface 72 and the first inner surface 62, and the step portion 122 supports the second inner surface 72 upward. The second inner surface 72 is arranged toward the first focus separation optical sheet 41. When the first optical lens 6 and the second optical lens 7 are integrally formed to form a double convex lens structure, the first optical lens 6 includes a first outer surface 61 and a first side surface 63, and the second optical lens 7 includes a second inner surface 72 and a second side surface 73.

[0047] like Figures 14 to 16As shown, it is the fourth embodiment of the utility model. The structure of the starry sky projection lamp 100 of this embodiment is roughly the same as that of the first embodiment, and the difference is that the starry sky projection lamp 100 includes the base, the light source assembly 3, the light assembly 30, the optical assembly 4, the first lens assembly, the second lens assembly and the lens member. The lower seat 21 includes the light-transmitting hole 212 penetrating upward, the light-shielding ring arranged around the light-transmitting hole 212, the light-guiding hole and the light-guiding ring arranged around the light-guiding hole. The light-shielding ring is arranged around the light source assembly 3, and the light-guiding ring is arranged around the light assembly 30. The light source assembly 3 and the light assembly 30 are arranged side by side in the left-right direction and are both located below the optical assembly 4. The structure of the optical assembly 4 is the same as that of the first embodiment, and will not be described again. The first lens assembly and the second lens assembly are both located above the second defocusing optical sheet 42. The first lens assembly is arranged corresponding to the left side of the first defocusing optical sheet 41, and the second lens assembly is arranged corresponding to the right side of the first defocusing optical sheet 41. The first lens assembly includes a first optical lens 6 and a second optical lens 7 located between the first optical lens 6 and the focus separation optical sheet. The second lens assembly includes a third optical lens 10 and a fourth optical lens 20 located between the third optical lens 10 and the focus separation optical sheet. The first lens assembly includes a first optical lens 6, the first optical lens 6 includes a first outer surface 61 and a first inner surface 62 arranged opposite to each other, the first outer surface 61 is a horizontal surface exposed upward, and the second inner surface 72 is an arcuate surface arranged toward the focus separation optical sheet. The second optical lens 7 includes a second outer surface 71 and a second inner surface 72 arranged opposite to each other, the second outer surface 71 is an arcuate surface arranged toward the first inner surface 62, and the second inner surface 72 is a horizontal surface arranged toward the focus separation optical sheet. Of course, the second inner surface 72 and the second outer surface 71 may be arranged in opposite directions. The second optical lens 7 includes a second outer surface 71 and a second inner surface 72 arranged opposite to each other, the second outer surface 71 is an arcuate surface arranged toward the first inner surface 62, and the second inner surface 72 is a horizontal surface arranged toward the focus separation optical sheet. The third optical lens 10 includes the third inner surface 102 and the third outer surface 101 which are arranged opposite to each other, the third inner surface 102 is a horizontal surface which is exposed upward, and the third outer surface 101 is an arcuate surface which is arranged toward the focus separation optical sheet. The structure and positional relationship of the fourth optical lens 20 may be the same as that of the second optical lens 7, or the same as that of the third optical lens 10. The first outer surface 61 and the third outer surface 101 are located in the same horizontal plane, that is, the distances between the first outer surface 61 and the focus separation optical sheet are equal.The central axes of the light source assembly 3, the first optical lens 6 and the second optical lens 7 coincide with each other, the central axes of the light assembly 30, the third optical lens 10 and the fourth optical lens 20 coincide with each other, and the central axis of the first optical lens 6 is parallel to the central axis of the third optical lens 10. The maximum distance from the left edge of the first optical lens 6 to the right edge of the third optical lens 10 is between 0.8 times and 1.5 times the width of the split-focus optical sheet. When the driving assembly 40 drives the optical element, the moving direction of the projection light effect formed by the first lens assembly is opposite to the moving direction of the projection light effect formed by the second lens assembly. When the driving assembly 40 rotates forward, the projection light effect of the first lens assembly moves backward, and the projection light effect of the second lens assembly moves forward. When the driving assembly 40 rotates reversely, the projection light effect of the first lens assembly moves forward, and the projection light effect of the second lens assembly moves backward. The structure of the lens component is the same as that of the first embodiment. A plurality of star projection patterns can be set on the projection sheet 85 to form a star projection effect.

[0048] In summary, the starry sky projection lamp of the utility model has the following beneficial effects:

[0049] (1) An optical component is located above the light source component, and a driving component drives the optical component to rotate; a first optical lens is installed on the base, the first optical lens includes a first outer surface and a first inner surface that are oppositely arranged, the first outer surface is a horizontal surface and is upwardly exposed to the projection port, and the second inner surface is an arcuate surface and protrudes downward into the receiving cavity; a second optical lens is located between the optical component and the first optical lens, the second optical lens includes a second outer surface and a second inner surface that are oppositely arranged, the second outer surface is an arcuate surface, the arcuate surface is oppositely arranged to the second inner surface, and the second inner surface is a horizontal surface that is arranged toward the optical component. Since the light emitted by the light source component is refracted from the air through the first inner surface and is closer to the normal line, the light will be projected outward from the first outer surface to form a strong light area in the middle and a weak light area surrounding the strong light area. The strong light area forms the main projection range, and the weak light area forms a larger projection light trailing ethereal effect. The arcuate surface of the second optical lens strengthens the light effect of the high-definition projection in the middle area upward and shortens the projection focal length.

[0050] The above detailed description is only an explanation of the preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.

Claims

1. A starry sky projection lamp, characterized in that: include: A base, comprising a receiving cavity and a projection port connected to the receiving cavity from top to bottom; At least one light source assembly is accommodated in the accommodation cavity; An optical component, located above the light source component; A driving component, driving the optical component to rotate; A first optical lens is mounted on the base, the first optical lens comprises a first outer surface and a first inner surface which are arranged opposite to each other, the first outer surface is a horizontal surface and is upwardly exposed to the projection opening, and the first inner surface is an arc-shaped surface and protrudes downward into the receiving cavity; The second optical lens is located between the optical component and the first optical lens. The second optical lens includes a second outer surface and a second inner surface that are oppositely arranged. The second outer surface is an arcuate surface that is oppositely arranged to the second inner surface. The second inner surface is a horizontal surface that is arranged toward the optical component.

2. The starry sky projection lamp as claimed in claim 1, characterized in that: A distance between the first inner surface and the second outer surface is 0 mm to 6 mm.

3. The starry sky projection lamp as claimed in claim 1, characterized in that: The curvature of the first outer surface is the same as the curvature of the second inner surface.

4. The starry sky projection lamp as claimed in claim 1, characterized in that: The base includes a seat body located in the receiving cavity, the optical component is movably installed on the seat body, the optical component includes at least one corrugated sheet, the seat body includes a through hole penetrating upward and at least one supporting portion arranged toward the center of the through hole, the second optical lens is installed in the through hole, and the supporting portion supports the second optical lens upward.

5. The starry sky projection lamp as claimed in claim 4, characterized in that: The seat body includes a plurality of buckle parts arranged around the through hole, and each of the buckle parts limits the movement of the second optical lens in the horizontal direction and the up-down direction.

6. The starry sky projection lamp as claimed in claim 4, characterized in that: The width of the second inner surface is 1 / 4 to 1 times the width of the corrugated sheet.

7. The starry sky projection lamp according to any one of claims 1 to 3 and 5 to 6, characterized in that: The optical component includes a first corrugated sheet and a second corrugated sheet stacked on each other, wherein the projections of the lines of the first corrugated sheet and the lines of the second corrugated sheet in a horizontal direction intersect.

8. The starry sky projection lamp as claimed in claim 7, characterized in that: The optical component includes an outer gear ring arranged around the first corrugated sheet and the second corrugated sheet, the outer gear ring includes a main body, an upper shaft portion and a lower shaft portion extending upward from the main body, the base includes a seat body located in the accommodating cavity, the seat body includes an upper seat and a lower seat fixed to each other, the upper shaft portion is movably connected to the upper seat, the lower shaft portion is movably connected to the lower shaft portion, and the second corrugated sheet is fixed to the upper seat.

9. The starry sky projection lamp as claimed in claim 8, characterized in that: The starry sky projection lamp further includes an interference sheet fixed to the lower seat, and the first corrugated sheet and the second corrugated sheet form mutual cutting in different spaces with the interference sheet.

10. The starry sky projection lamp as claimed in claim 9, characterized in that: During one rotation of the optical component, the positions where the first corrugated sheet and / or the second corrugated sheet cut the interference sheet do not repeat, and the projection light effect formed by the first corrugated sheet and the projection light effect formed by the second corrugated sheet at least partially overlap.

11. The starry sky projection lamp according to claim 9, characterized in that: The lower seat comprises a light-transmitting hole penetrating the upper and lower surfaces thereof and a light-shielding portion surrounding the light-transmitting hole; the interference sheet is installed at the light-transmitting hole; and the light source assembly protrudes upward into the light-shielding portion.

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