Projection night lamp

Abstract

The utility model discloses a projection night lamp. A light source assembly is accommodated in a base; the optical assembly is located above the light source assembly, the optical assembly comprises a first focus-splitting optical sheet and a second focus-splitting optical sheet which are arranged in a stacked mode, the first focus-splitting optical sheet comprises a plurality of first convex parts and a plurality of first concave parts, the texture of the second focus-splitting optical sheet comprises a plurality of second convex parts and a plurality of second concave parts, the second convex parts and the second concave parts are arranged alternately, and the first convex parts and the second concave parts are arranged alternately. The second convex part and the first convex part or the first concave part are mutually stacked, and the second concave part and the first convex part or the first concave part are mutually stacked in the vertical direction; the driving assembly drives the first focus-splitting optical sheet and / or the second focus-splitting optical sheet to rotate, and the first focus-splitting optical sheet and the second focus-splitting optical sheet subdivide the textures of each other, so that the projection is increased, the texture diversity effect is increased, the projection superposition effect is increased in space, the diversity of projection light effects is enriched, the projection intensity is increased, and the projection quality is improved. And the effect is better like a cloud layer or a night net in the sky.

Description

[Technical field]

[0001] The utility model relates to the technical field of projection night lights, in particular to a projection night light with mutually iterative split-focus optical sheets. [Background technology]

[0002] An existing projection night light includes a housing, an LED light source mounted on the housing, a corrugated sheet located above the LED light source, a convex lens located above the interference sheet, a motor assembly, and a rotor of the motor assembly fixed with the corrugated sheet. The housing includes an inner cavity and a projection hole connected to the inner cavity, and the convex lens is mounted on the projection hole. The light emitted by the LED light source passes through the corrugated sheet and the corrugated lotus sheet. Since the texture of the corrugated sheet is projected through the convex lens and will be magnified many times, there are few layers, resulting in a lack of cloud effect, and due to the limitations of the molding process, finer textures cannot be formed on the corrugated sheet. The projection effect cannot be met.

[0003] Therefore, it is necessary to design a new projection night light 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 projection night light which subdivides texture by using two focus splitting optical sheets stacked up and down.

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

[0006] A projection night light comprises: a base; at least one light source assembly housed in the base; an optical assembly located above the light source assembly, the optical assembly comprising a first focusing optical sheet and a second focusing optical sheet stacked in an up-and-down direction, the texture of the first focusing optical sheet comprising a plurality of first protrusions and a plurality of first recesses, the first protrusions and the first recesses being alternately arranged, the texture of the second focusing optical sheet comprising a plurality of second protrusions and a plurality of second recesses, the second protrusions and the second recesses being alternately arranged, at least a portion of the second protrusions and the first protrusions or the first recesses being stacked on each other in the up-and-down direction, and at least a portion of the second recesses and the first protrusions or the first recesses being stacked on each other in the up-and-down direction; a driving assembly driving the first focusing optical sheet to rotate and / or the second focusing optical sheet to rotate.

[0007] Further, at least a portion 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 a portion of the projection optics formed by the first convex portion overlaps with the projection optics formed by the second convex portion.

[0008] Furthermore, the projection night light includes an interference plate located between the light source assembly and the optical assembly, and the texture of the first focusing optical plate and the texture of the second focusing optical plate form cuts at different positions in the up and down directions with the texture of the interference plate.

[0009] Furthermore, when the optical component rotates, the positions where the texture of the first focusing optical sheet and the texture of the second focusing optical sheet cut the interference sheet continuously change, and the projection light effect formed by the first focusing optical sheet and the projection formed by the second focusing optical sheet alternately exist.

[0010] Furthermore, a width of the first focus splitting optical sheet or the second focus splitting optical sheet is 1 / 2 to 3 times the width of the interference sheet.

[0011] Furthermore, the base includes a receiving cavity and a projection port connected to the receiving cavity at upper and lower positions, the light source assembly is received in the receiving cavity, the projection night light includes a first optical lens located above the optical assembly, the first optical lens includes a first outer surface and a first inner surface opposite to each other, the first outer surface is an arc-shaped surface, the first inner surface is a horizontal surface, the first outer surface is upwardly exposed to the projection port, and the first inner surface protrudes into the receiving cavity.

[0012] Furthermore, the projection night light further includes a second optical lens 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 arranged, the second outer surface is an arc surface, the second inner surface is a horizontal surface, the second outer surface is arranged opposite to the first inner surface, and the second inner surface is arranged toward the second focusing optical sheet.

[0013] Furthermore, the base includes a shell and a clamping member fixed to the shell, the clamping member includes a clamping hole arranged around the projection port and a step portion extending toward the clamping hole, the first optical lens is installed in the clamping hole, the first inner surface passes through the clamping hole and protrudes into the accommodating cavity, and the step portion supports the first inner surface upward to form a side wall of the projection port to block the first outer surface from moving upward.

[0014] Furthermore, the projection night light further includes a second optical lens 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 arranged, the second outer surface is a horizontal plane, the second inner surface is an arcuate surface, the second outer surface is arranged opposite to the first inner surface, and the second inner surface is arranged toward the second focusing optical sheet.

[0015] Furthermore, the base includes a receiving cavity and a base body received in the receiving cavity, the light source assembly is received in the receiving cavity, the projection night light includes an interference plate located below the optical assembly, the base includes a light-transmitting hole and a light-shielding portion arranged around the light-transmitting hole, the interference plate is installed on the light-transmitting hole, and the light-shielding portion is arranged around the light source assembly.

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

[0017] The optical component includes a first focusing optical sheet and a second focusing optical sheet stacked in the up-down direction, the texture of the first focusing optical sheet includes a plurality of first convex portions and a plurality of first concave portions, the first convex portions and the first concave portions are alternately arranged, the texture of the second focusing optical sheet includes a plurality of second convex portions and a plurality of second concave portions, the second convex portions and the second concave portions are alternately arranged, at least part of the second convex portions and the first convex portions or the first concave portions are stacked on each other in the up-down direction, at least part of the second concave portions and the first convex portions or the first concave portions are stacked on each other in the up-down direction; a driving component drives the first focusing optical sheet to rotate and / or the second focusing optical sheet to rotate, the first focusing optical sheet and the second focusing optical sheet subdivide each other's textures, increase the projection and increase the texture diversity effect, increase the projection superposition effect in space, and the first focusing optical sheet and the second focusing optical sheet are at different distances from the light source, so that the formed projection optics are different, the diversity of the projection light effect is enriched, and the density of the projection is increased, which is more like the effect of clouds or sunset in the sky.

Brief Description of the Drawings

[0018] Figure 1 A three-dimensional diagram of a projection night light according to a first embodiment of the utility model;

[0019] Figure 2 for Figure 1 A top view of

[0020] Figure 3 for Figure 2 Section view along the AA section line;

[0021] Figure 4 for Figure 1 A three-dimensional diagram of the center body, light source assembly, drive assembly, and optical assembly;

[0022] Figure 5 for Figure 4 3D exploded view of

[0023] Figure 6 for Figure 5 A three-dimensional exploded view of the middle structure;

[0024] Figure 7 for Figure 5 A schematic diagram of a first focusing optical sheet or a second focusing optical sheet;

[0025] Figure 8 A three-dimensional diagram of a projection night light according to a second embodiment of the present utility model;

[0026] Fig. 9 for Figure 8 A top view of

[0027] Fig.10 for Fig. 9 Section view along the BB section line;

[0028] Fig.11 A three-dimensional diagram of a projection night light according to a third embodiment of the present utility model;

[0029] Fig.12 for Fig.11 A top view of

[0030] Fig.13 for Fig.12 Section view along CC section line;

[0031] Fig.14 A three-dimensional diagram of a projection night light according to a fourth embodiment of the present utility model;

[0032] Fig.15 for Fig.14 A top view of

[0033] Fig.16 for Fig.15 Section view along DD section line;

[0034] Description of the accompanying drawings of the specific embodiments:

[0035] Projection Night Light 100 Shell 1 Housing 11 Accommodation chamber 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]

[0036] 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.

[0037] like Figures 1 to 7 As shown, the projection night light 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.

[0038] like Figure 1 , Figure 5 and Figure 6 As 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 .

[0039] like Figure 3 and Figure 5 As 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.

[0040] 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 thickness of the focus splitting optical sheet is between 2mm and 4.5mm. 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 alternately arranged 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 of the side surfaces of the convex portion P1 and the horizontal plane is 0° to 80°, which is convenient for the molding of the convex portion P1. The concave portion P2 is formed between two adjacent convex portions P1, and the heights of at least some of the two adjacent convex portions P1 are different, and the orientations of at least some of the two adjacent convex portions P1 are different. At least some of the convex portions P1 have total reflection of light at the position connecting 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 at least be defined as 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, and the first concave portions are formed between two adjacent first protrusions 226, and 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, and the heights of at least some of the two adjacent first protrusions are different, and the orientations of at least some of the two adjacent first protrusions are different. The texture of the second focus splitting optical sheet 42 includes a plurality of second convex portions and a plurality of second concave portions. The second convex portions and the second concave portions are alternately arranged to form the surface texture of the second focus splitting optical sheet 42. At least part of the heights of two adjacent second convex portions are different, at least part of the orientations of two adjacent second convex portions are different, and the second concave portion is formed between two adjacent second convex portions. At least part of the second convex portions and the first convex portions or the first concave portions are stacked with each other in the vertical direction, and at least part of the second concave portions and the first convex portions or the first concave portions are stacked with each other in the vertical direction, that is, the texture of the first focus splitting optical sheet 41 and the texture of the second focus splitting optical sheet 42 are intersected in the horizontal direction, so that the textures of the two are cut mutually, and the area of ​​their respective textures is refined. At least part of the projection optics formed by the first convex portions is located in the projection dark area formed by the second concave portions, or at least part of the projection optics formed by the first convex portions and the projection optics formed by the second convex portions overlap with each other.That is to say, 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 each other. 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 penetrating 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 defocusing optical sheet 41 and the second defocusing optical sheet 42 are accommodated in the mounting hole, and the support block supports the first defocusing 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.

[0041] 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 .

[0042] 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 also 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 and 1 times the width of the first focusing optical sheet 41 or the second focusing optical sheet 42. The driving assembly 40 includes a gear that cooperates with the gear ring portion. Or the driving assembly 40 drives the first focusing sheet 41 and / or the second focusing sheet 42 to rotate. 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.

[0043] like Figure 1 and Figure 3As shown, the projection night light 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.

[0044] like Figures 8 to 10As shown in the figure, it is the second embodiment of the utility model. The structure of the projection night light 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.

[0045] like Figures 11 to 13As shown, it is the third embodiment of the utility model. The structure of the projection night light 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 up and down. 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.

[0046] like Figures 14 to 16As shown, it is the fourth embodiment of the utility model. The structure of the projection night light 100 of this embodiment is roughly the same as that of the first embodiment, and the difference is that the projection night light 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 is not 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.

[0047] In summary, the projection night light of the utility model has the following beneficial effects:

[0048] (1) The optical component includes a first focus splitting optical sheet and a second focus splitting optical sheet stacked in the vertical direction, the texture of the first focus splitting optical sheet includes a plurality of first convex parts and a plurality of first concave parts, the first convex parts and the first concave parts are alternately arranged, the texture of the second focus splitting optical sheet includes a plurality of second convex parts and a plurality of second concave parts, the second convex parts and the second concave parts are alternately arranged, at least part of the second convex parts and the first convex parts or the first concave parts are stacked with each other in the vertical direction, at least part of the second concave parts and the first convex parts or the first concave parts are stacked with each other in the vertical direction; a driving component drives the first focus splitting optical sheet to rotate and / or the second focus splitting optical sheet to rotate, the first focus splitting optical sheet and the second focus splitting optical sheet mutually subdivide each other's texture, increase the projection and increase the texture diversity effect, and have a projection superposition effect in space. Moreover, the first focus splitting optical sheet and the second focus splitting optical sheet are at different distances from the light source, so that the formed projection optics are different, the diversity of the projection light effect is enriched, and the density of the projection is increased, which is more like the effect of clouds or sunset in the sky.

[0049] 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 projection night light, characterized in that: include: Pedestal; At least one light source assembly housed in the base; an optical assembly, located above the light source assembly, the optical assembly comprising a first focus splitting optical sheet and a second focus splitting optical sheet stacked in an up-down direction, the texture of the first focus splitting optical sheet comprising a plurality of first convex portions and a plurality of first concave portions, the first convex portions and the first concave portions being alternately arranged, the texture of the second focus splitting optical sheet comprising a plurality of second convex portions and a plurality of second concave portions, the second convex portions and the second concave portions being alternately arranged, at least a portion of the second convex portions and the first convex portions or the first concave portions being stacked on each other in the up-down direction, and at least a portion of the second concave portions and the first convex portions or the first concave portions being stacked on each other in the up-down direction; A driving component drives the first focus separation optical sheet to rotate and / or the second focus separation optical sheet to rotate.

2. The projection night light as claimed in claim 1, characterized in that: At least a portion 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 a portion of the projection optics formed by the first convex portion overlaps with the projection optics formed by the second convex portion.

3. The projection night light as claimed in claim 1, characterized in that: The projection night light includes an interference plate between the light source assembly and the optical assembly, and the texture of the first focusing optical plate and the texture of the second focusing optical plate form cuts at different positions in the up and down directions with the texture of the interference plate.

4. The projection night light as claimed in claim 3, characterized in that: When the optical component rotates, the positions where the textures of the first focusing optical sheet and the second focusing optical sheet cut the interference sheet continuously change, and the projection light effect formed by the first focusing optical sheet and the projection formed by the second focusing optical sheet alternately exist.

5. The projection night light as claimed in claim 3, characterized in that: The width of the first focus separation optical sheet or the second focus separation optical sheet is 1 / 2 to 3 times the width of the interference sheet.

6. The projection night light according to any one of claims 1 to 5, characterized in that: The base includes a receiving cavity and a projection port connected to the receiving cavity from top to bottom. The light source assembly is received in the receiving cavity. The projection night light includes a first optical lens located above the optical assembly. The first optical lens includes a first outer surface and a first inner surface that are opposite to each other. The first outer surface is an arc-shaped surface, and the first inner surface is a horizontal surface. The first outer surface is exposed upward at the projection port, and the first inner surface protrudes into the receiving cavity.

7. The projection night light as claimed in claim 6, characterized in that: The projection night light further includes a second optical lens 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 arc surface, the second inner surface is a horizontal surface, the second outer surface is opposite to the first inner surface, and the second inner surface is arranged toward the second focusing optical sheet.

8. The projection night light as claimed in claim 6, characterized in that: The base includes a shell and a clamping member fixed to the shell, the clamping member includes a clamping hole arranged around the projection port and a step portion extending toward the clamping hole, the first optical lens is installed in the clamping hole, the first inner surface passes through the clamping hole and protrudes into the accommodating cavity, and the step portion supports the first inner surface upward to form a side wall of the projection port to block the first outer surface from moving upward.

9. The projection night light as claimed in claim 6, characterized in that: The projection night light further includes a second optical lens 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 a horizontal surface, the second inner surface is an arcuate surface, the second outer surface is opposite to the first inner surface, and the second inner surface is arranged toward the second focusing optical sheet.

10. The projection night light as claimed in claim 5, characterized in that: The base includes a receiving cavity and a base body received in the receiving cavity, the light source assembly is received in the receiving cavity, the projection night light includes an interference plate located below the optical assembly, the base includes a light-transmitting hole and a light-shielding portion arranged around the light-transmitting hole, the interference plate is installed on the light-transmitting hole, and the light-shielding portion is arranged around the light source assembly.

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