Projection device

Abstract

The utility model discloses a projection device. The projection device comprises a fixed seat; the motor assembly is fixed on the fixed seat; the light source assembly is fixedly connected to the fixed seat; the first optical element is located above the motor assembly, the motor assembly drives the first optical element, the first optical element comprises a plurality of convex lenses, the focal lengths or radians or orientations of one convex lens and the other convex lens are different, light emitted by the light source assembly penetrates through the convex lenses, and the light emitted by the light source assembly penetrates through the convex lenses. The first optical element forms a plurality of irregular luminous sources; the second optical element is located above the first optical element, the second optical element comprises a plurality of irregular long-strip-shaped lenses, the first optical element is located between 1F and 2F of the long-strip-shaped lenses, it is ensured that the first optical element is located in the range, capable of achieving clear projection, of the long-strip-shaped lenses, the amplification effect can be achieved, and the image quality is improved. And use requirements are met.

Description

[Technical field]

[0001] The utility model relates to the technical field of projection devices, in particular to a projection device for forming northern lights. [Background technology]

[0002] An existing projection device includes a housing, a light source assembly mounted on the housing, a condenser lens and a light-transmitting sheet located above the light source assembly, a motor assembly driving the light-transmitting sheet to rotate, and a projection lens located above the light-transmitting sheet. The housing includes a receiving groove and a first shell and a second shell forming the receiving groove, and the second shell includes a projection port connected to the receiving groove from top to bottom. The condenser lens cover is arranged above the light source assembly, and the projection lens is mounted on the projection port. The second lens includes a plurality of facets, and the plurality of facets are greatly different from the light-transmitting sheet.

[0003] In the above structure, since the distances between the plurality of cut surfaces and the light-transmitting sheet vary greatly, the distance between the light-transmitting sheet and the plurality of cut surfaces cannot be guaranteed, resulting in that the projected effect is not clear enough and cannot meet the use requirements. [Contents of the utility model]

[0004] In view of the problems faced by the background technology, the utility model provides a projection device in which a first optical element is located between 1F and 2F of the second optical element.

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

[0006] A projection device comprises: a fixing seat; a motor assembly fixed to the fixing seat; a light source assembly fixedly connected to the fixing seat; a first optical element located above the motor assembly, the motor assembly driving the first optical element, the first optical element comprising a plurality of convex lenses, wherein the focal length, curvature or orientation of one convex lens is different from that of another convex lens, the light emitted by the light source assembly passes through the plurality of convex lenses, and the first optical element forms a plurality of irregular light sources; a second optical element located above the first optical element, the second optical element comprising a plurality of irregular long strip lenses, and the first optical element being located between 1F and 2F of the long strip lenses.

[0007] Furthermore, at least parts of the parabolic profiles of the same position of two adjacent long lenses are the same.

[0008] Furthermore, the long lens includes a first portion deformed to the left and a second portion deformed to the right, or a first portion deformed to the left, a second portion deformed to the right, and a third portion deformed to the left.

[0009] Furthermore, the second optical element includes a first optical plate and a plurality of second optical plates surrounding the first optical plate, the first optical plate and the second optical plate are both provided with a plurality of the elongated lenses, the first optical plate is located above the first optical element, the plurality of the elongated lenses are formed on the outer surface or inner surface of the first optical plate and the plurality of the second optical plates, and the first optical plate and the plurality of the second optical plates are integrally formed or are independently formed separately.

[0010] Further, the second optical element includes a first optical plate and a second optical plate arranged around the first optical plate, the first optical plate and or the second optical plate include a plurality of the long lenses, the fixing seat includes a plurality of card blocks, at least two of the second optical plates are provided with card slots and locking blocks, the locking blocks move downward along the card blocks, the card blocks are accommodated in the card slots, and the card blocks prevent the locking blocks from moving upward; or the second optical element is fixed to the fixing seat by a screw, and the screw is located at the connection between the two second optical plates.

[0011] A projection device comprises: a fixing seat; a motor assembly fixed to the fixing seat; a light source assembly fixedly connected to the fixing seat; a first optical element located above the motor assembly, the motor assembly driving the first optical element, the first optical element comprising a plurality of convex lenses, wherein the focal length, curvature or orientation of one of the convex lenses is different from that of another of the convex lenses; a second optical element located above the first optical element, the second optical element comprising a plurality of irregular long lenses, wherein the outer contour of the cross section of one of the long lenses is at least partially the same as that of another of the long lenses at the same position, and the first optical element is located between 1F and 2F of the long lenses.

[0012] Furthermore, the width of the long lens along the length direction first increases gradually and then decreases gradually, or first decreases gradually and then increases gradually.

[0013] Furthermore, the fixed seat includes a base and an upper seat extending upward from the base, the upper seat includes a receiving cavity extending upward and a limiting groove connected to the receiving cavity, the limiting groove is recessed downward from the top surface of the upper seat, the motor assembly is received in the receiving cavity and fixed to the upper seat, the light source assembly is installed in the limiting groove and is located above the motor assembly, and the second optical element is arranged around the light source assembly and fixedly connected to the base.

[0014] Furthermore, the second optical element includes a first optical plate and a plurality of second optical plates surrounding the first optical plate, the first optical plate and the second optical plate are both provided with a plurality of the elongated lenses, the first optical plate is located above the first optical element, the plurality of the elongated lenses are formed on the outer surface or inner surface of the first optical plate and the plurality of the second optical plates, and the first optical plate and the plurality of the second optical plates are integrally formed or are independently formed separately.

[0015] Furthermore, the second optical element includes a first optical plate and a plurality of second optical plates surrounding the first optical plate, the first optical plate includes a plurality of the long lenses, the fixing seat includes a card block, the card block includes a guide inclined surface, at least two of the second optical plates are provided with a locking block, the locking block moves downward along the guide inclined surface and is engaged with the card block; or the second optical element is fixed to the fixing seat by a screw, and the screw is located at the connection between the two second optical plates.

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

[0017] The motor assembly is fixed to the fixing base, the light source assembly is fixedly connected to the fixing base, the first optical element is located above the motor assembly, the motor assembly drives the first optical element, the first optical element includes a plurality of convex lenses, one of the convex lenses has a different focal length, curvature or orientation from another convex lens, the light emitted by the light source assembly passes through the plurality of convex lenses, and the first optical element forms a plurality of irregular light sources; the second optical element is located above the first optical element, the second optical element includes a plurality of irregular long lenses, the first optical element is located between 1F and 2F of the long lens, ensuring that the first optical element is located within the range of the long lens that can achieve clear projection, and an enlarged projection effect can be obtained to meet the use requirements.

Brief Description of the Drawings

[0018] Figure 1 It is a three-dimensional diagram of the projection device of the utility model;

[0019] Figure 2 for Figure 1 A stereogram after being rotated to a certain angle;

[0020] Figure 3 for Figure 1 A top view of

[0021] Figure 4 for Figure 3 The cross-sectional view taken along line AA;

[0022] Figure 5 for Figure 4A partial enlarged view of middle b;

[0023] Figure 6 for Figure 4 A partial enlarged view of middle c;

[0024] Figure 7 for Figure 1 A three-dimensional exploded view after removing the second optical element;

[0025] Figure 8 for Figure 7 A schematic diagram of a first optical element;

[0026] Fig. 9 for Figure 7 3D exploded view of the middle base;

[0027] Fig.10 for Figure 1 A stereogram of the second optical element.

[0028] Description of the accompanying drawings of the specific embodiments:

[0029] Projection device 100 Fixed seat 1 Base 11 Step 111 Block 112 Guide slope 1121 Card 1122 Cover 12 Seat 13 Accommodation chamber 131 Limiting slot 132 Positioning slot 133 Wire hole 134 Fixing portion 135 Limiting part 136 Motor assembly 2 Base 21 Fixed ear 22 Rotating shaft 23 Light source component 3 Light board 31 Foolproofing Department 311 Through hole 32 First optical element 4 Convex lens 41 Second optical element 5 Long lens 51 Outer contour 511 Cross section 512 Slot 513 Part 1514 Part 2 515 Part 3 516 First optical plate 52 Second optical plate 53 Card slot 531 Lock block 532 [Specific implementation method]

[0030] 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.

[0031] like Figures 1 to 10 As shown, the projection device 100 of the utility model includes a fixing base 1, a motor assembly 2 installed on the fixing base 1, a light source assembly 3 and a control panel, a first optical element 4 and a second optical element 5 located above the motor assembly 2, and the motor assembly 2 drives the first optical element 4 to rotate.

[0032] like Figure 1 , Figure 4 and Figure 7As shown, the fixing seat 1 includes a base 11, a cover 12 installed on the base 11, and an upper seat 13 extending upward from the base 11. The base 11 includes a step portion 111 formed by being recessed downward from its top surface and a clamping block 112 located above the step portion 111. The step portion 111 surrounds the base 11. In this embodiment, the base 11 is arranged as a rectangular parallelepiped structure, the step portion 111 is formed on four sides of the base 11, and the clamping block 112 is arranged on at least two sides of the base 11. The clamping block 112 is located on the side of the step portion 111 closer to the center of the base 11, and the side is connected to the step portion 111. The clamping block 112 includes a guide inclined surface 1121 and a clamping portion 1122 extending downward from the guide inclined surface 1121. The cover 12 is upwardly covered on the base 11. The upper seat 13 is located in the middle of the base 11, and the width of the upper seat 13 is smaller than the width of the base 11. The upper seat 13 includes a receiving cavity 131 that passes through from top to bottom, and a limiting groove 132, a plurality of positioning grooves 133, and a wire hole 134 that communicate with the receiving cavity 131. The receiving cavity 131 passes through the base 11 downward, and the control board is mounted on the cover 12 and protrudes upward into the receiving cavity 131. The limiting groove 132 is formed by being recessed downward from the top surface of the upper seat 13, and the limiting groove 132 is larger than the opening of the receiving cavity 131, that is, the outer portion of the limiting groove 132 is arranged around the opening of the receiving cavity 131. The positioning groove 133 is formed by being recessed downward from the bottom wall of the limiting groove 132. The two positioning grooves 133 are located on the left and right sides of the receiving cavity 131. The wire hole 134 passes through the bottom wall of the limiting groove 132 upward. The conductive wire electrically connected to the control board passes through the wire hole 134 and is electrically connected to the lamp board 31. The upper seat 13 further includes a plurality of fixing portions 135 , and the bottom wall of the positioning slot 133 forms the fixing portion 135 . The upper seat 13 further includes a limiting portion 136 extending from the side wall of the limiting slot 132 , and the limiting portion 136 protrudes into the limiting slot 132 .

[0033] like Figure 4 and Figure 7As shown, the motor assembly 2 is installed on the upper seat 13, and the motor assembly 2 includes a base 21, a plurality of fixing ears 22 extending from the base 21, and a rotating shaft portion 23. The base 21 is accommodated in the accommodating cavity 131, and the two fixing ears 22 are accommodated in the positioning grooves 133 one by one, and each fixing ear 22 is fixed to one of the fixing portions 135. The light source assembly 3 includes a lamp board 31 and a through hole 32 passing through the lamp board 31. The lamp board 31 includes an anti-mistake portion 311 located outside the through hole 32. The lamp board 31 is installed in the limiting groove 132 and fixed to the upper seat 13. The rotating shaft portion 23 passes through the through hole 32 upward and passes over the upper seat 13 upward. The anti-mistake portion 311 cooperates with the limiting portion 136 to prevent the lamp board 31 from being reversely installed. In this embodiment, the limiting portion 136 is a convex structure, the fool-proof portion 311 is a groove structure, the limiting portion 136 protrudes into the receiving groove, or the fool-proof portion 311 is a convex structure, and the limiting portion 136 is a groove structure.

[0034] like Figure 4 and Figure 7 As shown, the first optical element 4 is fixed to the rotating shaft portion 23. The first optical element 4 includes a plurality of convex lenses 41, wherein the focal length, curvature or orientation of one convex lens 41 is different from that of another convex lens 41, and the angles between two adjacent convex lenses 41 are inconsistent. The light emitted by the lamp panel 31 passes through the plurality of convex lenses 41, and the first optical element 4 forms a plurality of irregular light sources. The distance between the first optical element 4 and the base 11 is 30 mm to 300 mm. The first optical element 4 can be set as a flat plate structure or a hollow cylindrical structure. The first optical element 4 set as a hollow cylindrical structure includes a light-transmitting plate extending in the horizontal direction and a second light-transmitting plate set around the first light-transmitting plate, and the first light-transmitting plate and the second light-transmitting plate are both provided with a plurality of convex lenses 41. Or the first optical element 4 is set as a drum structure. The light emitted by the light source assembly 3 passes through the first light-transmitting plate and the second light-transmitting plate, and a projection light effect can be formed on the top ceiling and the surrounding ceilings.

[0035] like Figure 1 , Figure 5 , Figure 6 and Fig.10As shown, the second optical element 5 is located above the first optical element 4 and is covered on the light source assembly 3. The second optical element 5 includes a plurality of irregular strip lenses 51, wherein the outer contour 511 of the cross section 512 of one of the strip lenses 51 and another of the strip lenses 51 at the same position is at least partially the same, or the parabolic contours of the same position of two adjacent strip lenses 51 are at least partially the same. A narrow groove 513 is formed between two adjacent irregular strip lenses 51, and the angle formed by the extended line of the narrow groove 513 is 98° to 178. The first optical element 4 is located between 1F and 2F of the strip lens 51, where F is the focal length of the strip lens 51, and the F value range of the strip lens 51 is between 10mm and 60mm. The width of the strip lens 51 gradually increases and then gradually decreases along the length direction, or gradually decreases and then gradually increases. The width of the strip lens 51 ranges from 2 mm to 20 mm, and the larger the curvature of the strip lens 51, the longer the corresponding focal length. Some of the strip lenses 51 include a first portion 514 deformed to the left and a second portion 515 deformed to the right, or a first portion 514 deformed to the left, a second portion 515 deformed to the right, and a third portion 516 deformed to the left. A plurality of the strip lenses 51 are arranged in the left-right direction, and the length of the strip lenses 51 is greater than three times its width. The highest points of the plurality of strip lenses 51 in the middle part of the second optical plate 53 are at the same distance from the same horizontal plane of the first optical element 4. The second optical element 5 includes a first optical plate 52 and at least one second optical plate 53 surrounding the first optical plate 52. In this embodiment, the first optical plate 52 is located above the first optical element 4, and a plurality of the second optical plates 53 surround the first optical plate 52, and the first optical plate 52 and the plurality of the second optical plates 53 form a hollow rectangular parallelepiped structure. The plurality of second optical plates 53 are located above the step portion 111 and are fixedly connected to the fixing seat 1. The first optical plate 52 and / or the second optical plate 53 are provided with a plurality of irregular long lenses 51, and the plurality of long lenses 51 are formed on the outer surface or inner surface of the first optical plate 52 and / or the plurality of second optical plates 53. The first optical plate 52 and the plurality of second optical plates 53 are integrally formed or are independently formed. When the first optical plate 52 and the plurality of second optical plates 53 are independently formed, the first optical plate 52 and the plurality of second optical plates 53 are fixed to each other by adhesive.At least two of the second optical plates 53 are provided with a slot 531 and a locking block 532 located below the slot 531. The locking block 532 moves downward along the guide inclined surface 1121. The locking portion 1122 is received in the slot 531. The locking block 532 is buckled with the locking portion 1122. The locking portion 1122 blocks the locking block 532 from moving upward. The step portion 111 limits the locking block 532 from moving downward. Or the second optical element 5 is fixed to the fixing seat 1 by a screw, and the screw is located at the connection between the two second optical plates 53. The second optical element 5 can be configured to be composed of two or more textures, such as the first optical plate 52 can include a plurality of irregular long lenses 51 and other types of textures, such as the first optical plate 52 can be designed to have an irregular long lens 51 in the middle and a texture similar to the first optical element 4 on the periphery. Multiple second optical plates 53 can be configured to be irregular short lenses, or some of the second optical plates 53 can be configured to have the texture of the first optical element 4. In other solutions, the second optical plate 53 may also be composed of two or more types of textures.

[0036] In summary, the projection device of the utility model has the following beneficial effects:

[0037] (1) The motor assembly 2 is fixed to the fixing base 1, and the light source assembly 3 is fixedly connected to the fixing base 1. The first optical element 4 is located above the motor assembly 2. The motor assembly 2 drives the first optical element 4. The first optical element 4 includes a plurality of convex lenses 41, wherein the focal length, curvature or orientation of one convex lens 41 is different from that of another convex lens 41. The light emitted by the light source assembly 3 passes through the plurality of convex lenses 41. The first optical element 4 forms a plurality of irregular light sources; the second optical element 5 is located above the first optical element 4. The second optical element 5 includes a plurality of irregular long lenses 51. The first optical element 4 is located between 1F and 2F of the long lenses 51. It is ensured that the first optical element 4 is located within the range of the long lenses 51, so that an enlarged and clear projection effect can be obtained to meet the use requirements.

[0038] 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 device, characterized in that: include: Fixed seat; A motor assembly is fixed to the fixing seat; A light source assembly, fixedly connected to the fixing seat; a first optical element, located above the motor assembly, the motor assembly drives the first optical element, the first optical element comprises a plurality of convex lenses, one of the convex lenses has a different focal length, curvature or orientation from another of the convex lenses, the light emitted by the light source assembly passes through the plurality of convex lenses, and the first optical element forms a plurality of irregular light sources; The second optical element is located above the first optical element. The second optical element includes a plurality of irregular long lenses. The first optical element is located between 1F and 2F of the long lenses.

2. The projection device as claimed in claim 1, characterized in that: At least part of the parabolic profiles of the same position of two adjacent long lenses are the same.

3. The projection device as claimed in claim 2, characterized in that: The long lens includes a first portion deformed to the left and a second portion deformed to the right, or a first portion deformed to the left, a second portion deformed to the right, and a third portion deformed to the left.

4. The projection device according to any one of claims 1 to 3, characterized in that: The second optical element includes a first optical plate and a plurality of second optical plates surrounding the first optical plate, the first optical plate and the second optical plate are both provided with a plurality of the long lenses, the first optical plate is located above the first optical element, the plurality of the long lenses are formed on the outer surface or inner surface of the first optical plate and the plurality of the second optical plates, and the first optical plate and the plurality of the second optical plates are integrally formed or are independently formed.

5. The projection device according to any one of claims 1 to 3, characterized in that: The second optical element includes a first optical plate and a second optical plate arranged around the first optical plate, the first optical plate and or the second optical plate include a plurality of the long lenses, the fixing seat includes a plurality of card blocks, at least two of the second optical plates are provided with card slots and locking blocks, the locking blocks move downward along the card blocks, the card blocks are accommodated in the card slots, and the card blocks prevent the locking blocks from moving upward; or the second optical element is fixed to the fixing seat by a screw, and the screw is located at the connection between the two second optical plates.

6. A projection device, characterized in that: include: Fixed seat; A motor assembly is fixed to the fixing seat; A light source assembly, fixedly connected to the fixing seat; A first optical element is located above the motor assembly, the motor assembly drives the first optical element, the first optical element comprises a plurality of convex lenses, and a focal length, curvature or orientation of one of the convex lenses is different from that of another of the convex lenses; A second optical element is located above the first optical element, and the second optical element includes a plurality of irregular long lenses, wherein the outer contour of the cross section of one of the long lenses is at least partially identical to that of another of the long lenses at the same position, and the first optical element is located between 1F and 2F of the long lenses.

7. The projection device as claimed in claim 6, characterized in that: The width of the long lens gradually increases and then decreases along the length direction, or gradually decreases and then increases.

8. The projection device as claimed in claim 6, characterized in that: The fixed seat includes a base and an upper seat extending upward from the base, the upper seat includes a receiving cavity extending upward and a limiting groove connected to the receiving cavity, the limiting groove is recessed downward from the top surface of the upper seat, the motor assembly is received in the receiving cavity and fixed to the upper seat, the light source assembly is installed in the limiting groove and is located above the motor assembly, and the second optical element is arranged around the light source assembly and fixedly connected to the base.

9. The projection device according to any one of claims 6 to 8, characterized in that: The second optical element includes a first optical plate and a plurality of second optical plates surrounding the first optical plate, the first optical plate and the second optical plate are both provided with a plurality of the long lenses, the first optical plate is located above the first optical element, the plurality of the long lenses are formed on the outer surface or inner surface of the first optical plate and the plurality of the second optical plates, and the first optical plate and the plurality of the second optical plates are integrally formed or are independently formed.

10. The projection device according to any one of claims 6 to 8, characterized in that: The second optical element includes a first optical plate and a plurality of second optical plates surrounding the first optical plate, the first optical plate includes a plurality of the long lenses, the fixing seat includes a card block, the card block includes a guide inclined surface, at least two of the second optical plates are provided with a locking block, the locking block moves downward along the guide inclined surface and is engaged with the card block; or the second optical element is fixed to the fixing seat by a screw, and the screw is located at the connection between the two second optical plates.

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