Child projector

Abstract

The embodiment of the utility model relates to the technical field of projectors, and discloses a child projector which comprises a shell, the interior of the shell is hollow, the interior of the shell is sequentially provided with an LED light source, a lens module and a lens module, and a projection light source generated at the LED light source sequentially penetrates through the lens module and the lens module and enters the exterior of the shell; the shell comprises a first shell body, the first shell body is in a disc shape, the bottom edge of the first shell body comprises at least one arc line, and the side face of the first shell body comprises an arc-shaped side face corresponding to the arc line; the size and the shape of the second shell are consistent with those of the first shell, and the second shell and the first shell are enclosed to form an outer shell; a through hole is formed in the enclosed part of the first shell and the second shell; the lens module penetrates through the through hole and is clamped between the first shell and the second shell. Through the above mode, the child projector provided by the embodiment of the utility model needs a small occupied area when projecting to a ceiling.

Description

Technical Field

[0001] This application relates to the field of projector technology, specifically to a children's projector. Background Technology

[0002] A projector, also known as a projector, is a device that projects images or videos onto a screen. It can be connected to computers, VCD players, DVD players, Blu-ray players, game consoles, DV cameras, etc., through various interfaces to play corresponding video signals. Projectors are widely used in homes, offices, schools, and entertainment venues. Depending on their operating method, there are different types, such as CRT, LCD, and DLP. The use of projectors improves office efficiency and makes teaching more convenient.

[0003] Chinese patent application number "CN202022485799.1" discloses a portable multi-functional children's projector. The children's projector includes a shell, which is a hollow, disc-shaped structure, formed by two separable shell parts. A lens module is installed inside the shell. The lens module includes upper and lower lens groups. The upper lens group is installed on a second frame, and the lower lens group is installed on a first frame. A gap is provided between the upper and lower lens groups to accommodate the movement of the projection insert module.

[0004] This children's projector requires a large footprint, especially when projecting onto the ceiling, making it unsuitable for use in children's rooms.

[0005] Therefore, how to reduce the footprint required when projecting children's projectors onto the ceiling has become a pressing technical problem. Utility Model Content

[0006] In view of the above problems, this application provides a children's projector that requires less floor space when projecting onto the ceiling.

[0007] According to one aspect of the embodiments of this application, a children's projector is provided. The children's projector includes a shell with a hollow interior. An LED light source, a lens module, and a lens module are sequentially arranged inside the shell. The projection light source generated by the LED light source passes through the lens module and the lens module in sequence and enters the exterior of the shell. The shell includes: a first shell, which is disc-shaped, with at least one arc on its bottom edge and an arc-shaped side corresponding to the arc; a second shell, which is the same size and shape as the first shell and is used to enclose the first shell to form the shell; a through hole is formed at the enclosing part of the first shell and the second shell; and the lens module passes through the through hole and is snapped between the first shell and the second shell.

[0008] Preferably, the children's projector also includes a base; the bottom edge of the first housing includes at least one straight line and a circular line connecting the two ends of the straight line, the first housing includes a side corresponding to the straight line and an arcuate side corresponding to the circular line; a through hole is located on the side corresponding to the straight line; the base is used to contact the arcuate side and support the outer shell 10.

[0009] Preferably, the through hole 13 is located near the arc-shaped side on the side corresponding to the straight line.

[0010] Preferably, the base includes an inwardly inclined annular surface, and the sum of the heights of the arcuate sides of the first housing 11 and the second housing 12 is consistent with the diameter of the annular surface of the base.

[0011] Preferably, the children's projector 1 also includes a power cord, one end of which is connected to the LED light source, and the other end extends through the arc-shaped side to the outside of the housing 10. The power cord is used to connect an external power source to the LED light source.

[0012] Preferably, the lens module includes a rear Fresnel lens, a heat-insulating glass, a display screen, a front Fresnel lens, and a reflector in sequence. The projection light source passes through the rear Fresnel lens, the heat-insulating glass, the display screen, the front Fresnel lens, and the reflector in sequence. One side of the reflector is attached to the lens module, and the other side is close to the front Fresnel lens, so as to reflect the projection light source emitted from the front Fresnel lens by 90 degrees and then into the lens module.

[0013] Preferably, the power of the LED light source is less than the preset power, and heat dissipation fins are provided between the LED light source and the curved side surface to dissipate heat from the LED light source.

[0014] Preferably, the outer casing 10 also has a plurality of star-shaped heat dissipation holes on the side corresponding to the straight line, and the star-shaped heat dissipation holes are aligned with the heat dissipation fins.

[0015] Preferably, the LED light source is positioned near one end of the curved side, and the reflector is positioned near the opposite end of the curved side.

[0016] Preferably, the lens module includes: a fixing cylinder located inside the housing 10 and snapped into the through hole 13, the inner wall of the fixing cylinder having a threaded groove; a lens barrel sleeved inside the fixing cylinder, the outer wall of the lens barrel having a threaded protrusion adapted to the threaded groove, the threaded protrusion being used to slide along the threaded groove; and an outer cylinder fixedly sleeved outside the lens barrel, at least a portion of the outer cylinder being located outside the housing 10, and the portion of the outer cylinder located outside the housing 10 having a striped groove.

[0017] In this embodiment, the first and second housings are designed in a disc shape, making the outer shell formed by the first and second housings drum-shaped. This allows the outer shell of the children's projector to have at least one arc and a corresponding arc-shaped side, softening the edges of the outer shell and preventing children from bumping into it and getting injured. The overall shape of the drum-shaped outer shell is similar to the surface of a rattle drum, making it more attractive to children. By inserting the lens module through the through hole and snapping it between the first and second housings, when the lens module is projected onto the ceiling, the surface of the outer shell opposite to the through hole can contact the ground, thereby reducing the area occupied by the children's projector 1 on the ground when projecting onto the ceiling.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0020] Figure 1 A perspective view of the children's projector provided in an embodiment of this application is shown;

[0021] Figure 2 A perspective view of a children's projector according to another embodiment of this application is shown;

[0022] Figure 3 A perspective view of the children's projector provided in an embodiment of this application is shown;

[0023] Figure 4 The embodiments provided in this application are shown. Figure 1 Exploded view of a children's projector;

[0024] Figure 5 The embodiments provided in this application are shown. Figure 4 Exploded view of a children's projector;

[0025] Figure 6 The embodiments provided in this application are shown. Figure 5 Enlarged view of section A;

[0026] Figure 7 An exploded view of the children's projector provided in an embodiment of this application is shown;

[0027] Figure 8 The embodiments provided in this application are shown. Figure 7 Enlarged view of section B.

[0028] The reference numerals in the detailed embodiments are as follows:

[0029] 1. Children's projector;

[0030] 10. Outer shell; 11. First shell; 12. Second shell; 13. Through hole; 14. Side corresponding to the straight line; 141. Straight line; 15. Curved side; 151. Curve; 16. Star-shaped heat dissipation hole;

[0031] 20. Base; 21. Ring surface;

[0032] 30. LED light source; 31. Power cord; 32. Heat sink fins;

[0033] 40. Lens module; 41. Rear Fresnel lens; 42. Heat-insulating glass; 43. Display screen; 44. Front Fresnel lens; 45. Reflector;

[0034] 50. Lens module; 51. Fixing cylinder; 511. Threaded groove; 52. Lens barrel; 521. Threaded ridge; 53. Outer barrel; 531. Striped groove. Detailed Implementation

[0035] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0037] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0038] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists, A and B exist simultaneously, and B exists. In addition, the character " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0040] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0041] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0042] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0043] When designing the children's projector, the inventors of this application discovered that children's rooms are usually small, making it difficult to project images onto the walls of the room; typically, images can only be projected onto the ceiling. Specifically, regarding projecting images onto the ceiling, the inventors further discovered that the floor space available for placing the children's projector in a children's room is small. In particular, toys are scattered throughout the floor of a children's room, further reducing the space available for placing the projector.

[0044] Based on this, the inventors of this application designed the children's projector with rounded edges to attract children to use it and prevent the edges of the children's projector from bumping into children. At the same time, they considered placing the lens module of the children's projector on the side with a smaller area, so that when the children's projector is projected onto the ceiling, the surface opposite the lens module occupies a smaller area of ​​the ground when it comes into contact with the ground.

[0045] Specifically, please refer to Figures 1-8 This application provides a children's projector 1, which includes a housing 10. The housing 10 is hollow inside, and an LED light source 30, a lens module 40, and a lens module 50 are sequentially arranged inside the housing 10. The projection light source generated by the LED light source 30 passes through the lens module 40 and the lens module 50 in sequence and enters the outside of the housing 10. The housing 10 includes: a first housing 11, which is disc-shaped, with at least one arc 151 on the bottom edge and an arc-shaped side 15 corresponding to the arc 151 on the side; a second housing 12, which is the same size and shape as the first housing 11 and is used to enclose the first housing 11 to form the housing 10; a through hole 13 is formed at the enclosing part of the first housing 11 and the second housing 12; and the lens module 50 passes through the through hole 13 and is snapped between the first housing 11 and the second housing 12.

[0046] The first housing 11 and the second housing 12 are designed as follows Figure 2 and Figure 5 The disc-shaped outer shell 10, formed by the first shell 11 and the second shell 12, is drum-shaped, which allows the outer shell 10 of the child projector 1 to have at least one arc 151 and an arc-shaped side 15 corresponding to the arc 151, so as to soften the edge of the outer shell of the child projector 1 and prevent children from being injured after bumping into the child projector 1; and the overall shape of the drum-shaped outer shell 10 is similar to the drumhead of a rattle drum, which is more attractive to children.

[0047] The lens module 50 is inserted through the through hole 13 and snapped between the first housing 11 and the second housing 12. When the lens module 50 is projected onto the ceiling, the surface of the outer housing 10 opposite to the through hole 13 can contact the ground. (See reference...) Figure 1 It can be observed that the surface of the outer shell 10 that contacts the base 20 is the same surface of the outer shell 10 that contacts the ground, and the area of ​​this surface is relatively small.

[0048] Specifically, the children's projector 1 also includes a base 20; the bottom edge of the first housing 11 includes at least a straight line 141 and a circular line connecting the two ends of the straight line 141; the first housing 11 includes a side 14 corresponding to the straight line and an arcuate side 15 corresponding to the circular line; the through hole 13 is located on the side 14 corresponding to the straight line; the base 20 is used to contact the arcuate side 15 and support the outer shell 10.

[0049] Preferably, the through hole 13 is located near the curved side 15 on the side 14 corresponding to the straight line. After rotating the child projector 1 180°, the projected image can shift, allowing the lens module 50 to be rotated by rotating the child projector, thus adjusting the position of the projected image. This adjustment method is convenient and quick. The outer casing 10 can be as follows: Figure 1 As shown, it is fixedly connected to the base 20, enabling the outer shell 10 to rotate relative to the base 20. The outer shell 10 can also be as shown... Figure 4 The design shown is a 20-piece split design with the base.

[0050] Please see Figure 1 and Figure 4 Preferably, the base 20 includes an inwardly inclined annular surface 21. The sum of the heights of the arcuate side surfaces 15 of the first housing 11 and the second housing 12 is consistent with the diameter of the annular surface 21 of the base 20. By providing an inwardly inclined annular surface 21 on the base 20, and having the annular surface 21 simultaneously contact the arcuate side surfaces 15 of the first housing 11 and the arcuate side surfaces 15 of the second housing 12, the contact area between the base 20 and the outer shell 10 can be increased, thereby improving the stability of the base 20 in supporting the outer shell 10.

[0051] Preferably, the children's projector 11 also includes a power cord 31. One end of the power cord 31 is connected to the LED light source 30, and the other end extends through the arc-shaped side 15 to the outside of the housing 10. The power cord 31 is used to connect an external power source to the LED light source 30. The exposed power cord 31 can be led out from the base 20 so that the power cord 31 can be stored through the base 20.

[0052] Please see Figures 5-6 Preferably, the lens module 40 includes a rear Fresnel lens 41, a heat-insulating glass 42, a display screen 43, a front Fresnel lens 44, and a reflector 45 in sequence. The projection light source passes through the rear Fresnel lens 41, the heat-insulating glass 42, the display screen 43, the front Fresnel lens 44, and the reflector 45 in sequence. One side of the reflector 45 is attached to the lens module 50, and the other side is close to the front Fresnel lens 44, so as to reflect the projection light source emitted from the front Fresnel lens 44 by 90 degrees and then into the lens module 50.

[0053] By setting one side of the reflector 45 to be attached to the lens module 50 and the other side close to the front mirror 44, the projection light source emitted from the front mirror 44 is reflected 90 degrees before entering the lens module 50. This allows the lens module 50 to be positioned on the top of the housing 10 and the lens module 40 to be positioned on the side of the housing 10. This avoids the problem of low internal space utilization caused by the lens module 50 and the lens module 40 being positioned in a straight line, thereby improving the internal space utilization of the housing 10 and helping to reduce the size of the children's projector 1.

[0054] Preferably, the power of the LED light source 30 is less than the preset power, and a heat dissipation fin 32 is provided between the LED light source 30 and the arc-shaped side 15. The heat dissipation fin 32 is used to dissipate heat from the LED light source 30.

[0055] When children view projected images, the impact of light brightness on their eyesight is usually considered. Therefore, the children's projector 1 is generally not set to high brightness, and the power of the LED light source 30 can be set to 3W~5W. The heat of the projector mainly comes from the LED light source. Therefore, after reducing the power of the LED light source 30, the internal heat of the children's projector 1 is also lower. A cooling fan can be selected. Without a fan, it is beneficial to further reduce the size of the children's projector 1. By setting heat dissipation fins 32, the heat dissipation performance inside the children's projector 1 can be improved while reducing the size of the projector 1, ensuring the normal operation of the LED light source 30.

[0056] Preferably, the side 14 of the outer casing 10 corresponding to the straight line also has a plurality of star-shaped heat dissipation holes 16, which are aligned with the heat dissipation fins 32 to improve the heat dissipation performance of the heat dissipation fins 32.

[0057] Preferably, the LED light source 30 is disposed near one end of the curved side 15, and the reflector 45 is disposed near the opposite end of the curved side 15, so that the LED light source 30 and the reflector 15 are compactly arranged inside the housing 10.

[0058] Preferably, the lens module 50 includes: a fixing cylinder 51 located inside the housing 10 and snapped into the through hole 13, the inner wall of the fixing cylinder 51 having a threaded groove 511 extending therefrom; a lens barrel 52 sleeved inside the fixing cylinder 51, the outer wall of the lens barrel 52 having a threaded protrusion 521 adapted to the threaded groove 511, the threaded protrusion 521 being used to slide along the threaded groove 511; and an outer cylinder 53 fixedly sleeved outside the lens barrel 52, at least a portion of the outer cylinder 53 being located outside the housing 10, and the portion of the outer cylinder 53 located outside the housing 10 having a striped groove 531.

[0059] The user can hold the striped groove 531 and turn the outer cylinder 53. The outer cylinder 53 drives the lens barrel 52 to rotate. The threaded protrusion 521 of the lens barrel 52 slides along the threaded groove 511 to raise and lower, thereby realizing the extension and retraction of the lens barrel 52 and thus completing the adjustment of the focal length of the children's projector 1.

[0060] In this embodiment, the first housing 11 and the second housing 12 are designed as follows: Figure 2 and Figure 5The disc-shaped design, formed by the first housing 11 and the second housing 12, creates a drum-shaped outer shell 10. This allows the outer shell 10 of the child projector 1 to have at least one arc 151 and a corresponding arc-shaped side 15, softening the edges of the outer shell and preventing children from bumping into it and getting injured. The overall shape of the drum-shaped outer shell 10 resembles the surface of a rattle drum, making it more attractive to children. By inserting the lens module 50 through the through hole 13 and snapping it between the first housing 11 and the second housing 12, when the lens module 50 projects onto the ceiling, the surface of the outer shell 10 opposite to the through hole 13 can contact the ground, thereby reducing the area occupied by the child projector 1 on the ground when projecting onto the ceiling.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A children's projector, the children's projector comprising a housing, the housing being hollow inside, and an LED light source, a lens module, and a lens module being sequentially disposed inside the housing, wherein a projection light source generated at the LED light source passes sequentially through the lens module and the lens module and is projected onto the outside of the housing; Its features are, The outer casing includes: A first housing, the first housing being disc-shaped, the bottom edge of the first housing including at least one arc, and the side surface of the first housing including an arc-shaped side surface corresponding to the arc; The second housing is the same size and shape as the first housing and is used to enclose the first housing to form the outer shell; A through hole is formed at the junction of the first housing and the second housing; The lens module passes through the through hole and is snapped between the first housing and the second housing.

2. The children's projector according to claim 1, characterized in that, The children's projector also includes a base; The bottom edge of the first housing includes at least a straight line and a circular line connecting the two ends of the straight line. The first housing includes a side surface corresponding to the straight line and an arcuate side surface corresponding to the circular line. The through hole is located on the side corresponding to the straight line; The base is used to contact the arc-shaped side and support the outer shell.

3. The children's projector according to claim 2, characterized in that, The through hole is located near the arc-shaped side and is positioned on the side corresponding to the straight line.

4. The children's projector according to claim 2, characterized in that, The base includes an inwardly inclined annular surface, and the sum of the heights of the arcuate sides of the first housing and the second housing is consistent with the diameter of the annular surface of the base.

5. The children's projector according to claim 4, characterized in that, The children's projector also includes a power cord, one end of which is connected to the LED light source, and the other end extends through the arc-shaped side to the outside of the housing. The power cord is used to connect an external power source to the LED light source.

6. The children's projector according to claim 2, characterized in that, The lens module includes a rear Fresnel lens, a heat-insulating glass, a display screen, a front Fresnel lens, and a reflector in sequence. The projection light source passes through the rear Fresnel lens, the heat-insulating glass, the display screen, the front Fresnel lens, and the reflector in sequence. One side of the reflector is attached to the lens module, and the other side is close to the front lens, so as to reflect the projection light source emitted from the front lens by 90 degrees and then into the lens module.

7. The children's projector according to claim 6, characterized in that, The power of the LED light source is less than the preset power. A heat dissipation fin is provided between the LED light source and the arc-shaped side surface. The heat dissipation fin is used to dissipate heat from the LED light source.

8. The children's projector according to claim 7, characterized in that, The outer casing also has multiple star-shaped heat dissipation holes on the side corresponding to the straight line, and the star-shaped heat dissipation holes are aligned with the heat dissipation fins.

9. The children's projector according to claim 7, characterized in that, The LED light source is positioned near one end of the curved side, and the reflector is positioned near the opposite end of the curved side.

10. The children's projector according to claim 1, characterized in that, The lens module includes: A fixed cylinder is located inside the outer shell and is snapped into the through hole; the inner wall of the fixed cylinder has a threaded groove. The lens barrel is fitted inside the fixed cylinder, and the outer wall of the lens barrel extends with a threaded protrusion that matches the threaded groove. The threaded protrusion is used to slide along the threaded groove. An outer tube is fixedly sleeved on the outside of the lens barrel, at least a portion of the outer tube is located outside the outer shell, and the portion of the outer tube located outside the outer shell has a striped groove.

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