Projection lamp

Abstract

The projection lamp comprises a fixing seat, a light source assembly, a rotating cover and a motor, the fixing seat comprises a containing groove, and a light source installation position and a plurality of cantilever hooks are arranged in the containing groove. The light source assembly is connected and fixed to the light source installation position. The rotating cover comprises a transparent cover body, a rotating connecting ring and a transmission gear ring, and the cantilever hook is hooked and buckled on the rotary connecting ring, so that the rotary cover is rotatably connected into the accommodating groove. The motor is connected with the transmission gear located in the containing groove, and the transmission gear is matched with the transmission gear ring to drive the rotating cover to rotate. The rotary connecting ring, the transmission gear ring and the transparent cover body are integrally formed, so that the structure and the assembly operation are simplified; the cantilever hooks are distributed around the periphery of the light source installation position and are separated from the light source installation position, and therefore installation of the light source assembly is not affected. In the assembling process, the light source assembly is firstly installed on the light source installation position, then the rotating cover is assembled on the fixing base, the overall assembling process is reduced, and assembling operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the field of lamps, in particular to a projection lamp. Background Art

[0002] Atmosphere projection lamps generally use projection films pre-printed with various types of patterns. By utilizing the principle of pinhole imaging, the projection light source is irradiated on the film with the printed pattern, and the image of the pattern can be projected on the other side of the film. This type of projection lamp is mostly used to create an atmosphere or as a night light for sleeping. Different atmosphere effects can be projected by replacing different projection films. Existing projection lamps usually consist of a fixed base, a light source assembly, a rotating part, a cover, and a motor. The light source assembly and the motor are installed in the fixed base, and the cover is installed with the projection film. The rotating part is rotatably connected to the fixed base, and the cover is connected to the rotating part. The light source assembly emits light toward the rotating cover, thereby projecting the pattern on the projection film. The fixed base includes a receiving groove recessed downward from its top surface, and the receiving groove is provided with a mounting groove, a plurality of cantilever hooks located in the mounting groove, and a light source connecting column. The light source connecting column is higher than the cantilever hook. The rotating part is provided with a snap ring inserted into the mounting groove. The rotating part is installed in the receiving groove. The snap ring is placed in the mounting groove and is connected to the cantilever hook buckle, so that the rotating part can be rotatably connected to the receiving groove. The light source assembly is connected and fixed to the light source connection column, and the light source assembly covers the mounting groove. The motor is connected to the transmission gear located in the receiving groove. The transmission gear cooperates with the transmission gear ring to drive the rotating cover to rotate. This type of projection lamp is disclosed in the Chinese utility model patent document with application number CN202121241271.8.

[0003] Although existing projection lamps can already project patterns on projection films, some problems still exist. First, the assembly process of existing projection lamps is complicated. It is necessary to complete the assembly of the rotating part and the fixed seat, the assembly of the light source assembly and the fixed seat, and the assembly of the cover and the rotating part. The overall assembly process is relatively large and the assembly operation is relatively cumbersome. If the cover and the rotating part are formed into one piece, the structure can be simplified, but there are problems in the overall assembly: if the rotating part is first connected to the receiving groove, the light source assembly needs to be inserted from the upper port of the cover to be installed. Since the cover is relatively high, it is inconvenient to install the light source assembly. If the light source assembly is installed first, the clamping ring cannot be installed in the installation groove because the light source assembly will block the installation groove. Therefore, how to simplify the assembly structure of the projection lamp and solve the above-mentioned installation problems are technical problems to be solved by this utility model. Utility Model Content

[0004] The main purpose of the utility model is to provide a projection lamp, aiming to achieve a simplified structure and convenient assembly.

[0005] The utility model provides a projection lamp, comprising a fixed base, a light source assembly, a rotating cover, and a motor. The fixed base includes a receiving groove recessed downward from its top surface, the receiving groove containing a light source mounting position and a plurality of cantilever hooks located around the light source mounting position; the light source assembly is mounted on the light source mounting position; the rotating cover includes a transparent cover body, a rotating connecting ring and a transmission gear ring integrally formed at the lower end of the transparent cover body, and a projection film attached to the side wall of the transparent cover body; the rotating connecting ring and the transmission gear ring are concentric ring structures and are placed in the receiving groove, with the cantilever hooks hooked onto the rotating connecting ring; the motor is connected to a transmission gear located in the receiving groove, and the transmission gear cooperates with the transmission gear ring to drive the rotating cover to rotate.

[0006] Preferably, the cantilever hook includes a cantilever extending upward from the bottom surface of the accommodating groove, a limit hook and a limit spherical surface protruding laterally on the cantilever, the limit spherical surface is located below the limit hook, and the rotating connecting ring includes an upwardly arranged annular axial abutment surface adapted to the limit hook and a laterally arranged annular radial abutment surface with an arc-shaped cross section adapted to the limit spherical surface; the limit hook lightly abuts against the axial abutment surface to limit the axial position of the rotating cover; the limit spherical surface lightly abuts against the radial abutment surface to limit the radial position of the rotating cover.

[0007] Preferably, the lower end surface of the rotating connecting ring is an arc surface.

[0008] Preferably, the light source mounting position is configured as a raised light source mounting platform.

[0009] Preferably, the upper end cover of the rotating cover is provided with an upper projection film and is connected with a connecting ring, and the connecting ring presses and fixes the upper projection film on the upper end of the rotating cover.

[0010] Preferably, the transmission gear ring comprises an annular body and transmission teeth provided on the inner wall surface of the annular body, and the transmission gear is located at the inner ring position of the transmission gear ring.

[0011] Preferably, the rotating connecting ring is located at the inner ring position of the transmission gear ring, the rotating connecting ring and the transmission gear ring are relatively spaced apart, and the lower end of the rotating connecting ring is higher than the lower end of the transmission gear ring, and the transmission gear is located below the rotating connecting ring.

[0012] Preferably, the motor is mounted on the back side of the receiving slot, and the transmission shaft of the motor passes through the receiving slot to be connected with the transmission gear.

[0013] Preferably, the rotating cover further comprises a receiving ring protruding radially outward from the outer wall surface of the lower end of the transparent cover body, and an annular receiving platform is provided at the upper end of the accommodating groove, and the receiving ring is placed on the receiving platform.

[0014] Preferably, the inner wall surface of the accommodating groove is provided with a plurality of first protrusions that are distributed in a circumferential manner at intervals and protrude inward, and the outer wall surface of the annular body is in contact with the first protrusions; the receiving platform is provided with a plurality of second protrusions that are distributed in a circumferential manner at intervals and protrude upward, and the receiving ring is placed on the second protrusions of the receiving platform.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. Simplified structure and easy assembly: The projection lamp proposed by the utility model integrates the rotating connecting ring and the transmission gear ring with the transparent cover, which simplifies the structure and assembly operation; the rotating cover is rotatably connected to the accommodating groove through the cooperation of the rotating connecting ring and the cantilever hook, and the transmission gear is driven to rotate by the motor, and the teeth on the transmission gear engage with the teeth on the transmission gear ring, thereby driving the rotating cover to rotate.

[0017] The cantilever hooks are distributed around the periphery of the light source mounting position. They are set separately from the light source mounting position to avoid interfering with the installation of the light source assembly. During assembly, the light source assembly is first installed in the light source mounting position, and then the rotating cover is assembled on the fixed base. This reduces the overall assembly process and simplifies the assembly operation.

[0018] 2. Stable rotation: the cantilever hook includes a cantilever extending upward from the bottom surface of the accommodating groove, a limiting hook and a limiting spherical surface protruding laterally on the cantilever, the limiting spherical surface is located below the limiting hook, and the rotating connecting ring includes an upwardly arranged annular axial abutting surface adapted to the limiting hook and a laterally arranged annular radial abutting surface with an arc-shaped cross section adapted to the limiting spherical surface; the limiting hook lightly abuts on the axial abutting surface to limit the rotating cover in the axial direction, so that the rotating cover cannot move up and down; the limiting spherical surface lightly abuts on the radial abutting surface to limit the rotating cover in the radial direction, so that the rotating cover cannot move forward, backward, left and right; through the axial and radial limiting of the rotating cover, the rotating cover can only rotate, ensuring the stable matching transmission of the transmission gear and the transmission gear ring, thereby ensuring the stable rotation of the rotating cover in the accommodating groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of the projection lamp in the embodiment of the present utility model.

[0020] Figure 2 Schematic diagram of the exploded structure of the projection lamp in the embodiment of the present invention.

[0021] Figure 3 The structure of the fixing seat in the embodiment of the utility model is shown as follows Figure 1 .

[0022] Figure 4 The structure of the fixing seat in the embodiment of the utility model is shown as follows Figure 2.

[0023] Figure 5 Schematic diagram of the structure of the rotating cover in the embodiment of the present utility model.

[0024] Figure 6 2 is a cross-sectional view of a projection lamp in an embodiment of the present invention.

[0025] Figure 7 It is a schematic diagram of the combination of the fixing base and the outer cover in an embodiment of the present utility model.

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout identify the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0029] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] Reference Figures 1 to 7 , the embodiment of the utility model provides a projection lamp:

[0031] A projection lamp includes a fixed base 1, a light source assembly, a rotating cover 2, and a motor. The light source assembly and the motor are installed in the fixed base 1. A projection film is installed in the rotating cover 2. The rotating cover 2 is rotatably connected to the fixed base 1. The rotating cover 2 covers the light source assembly inside. The light source assembly emits light toward the rotating cover 2, thereby projecting the pattern on the projection film.

[0032] The fixing base 1 includes a receiving groove 10 recessed downward from its top surface, and a light source mounting position and a plurality of cantilever hooks 12 located on the periphery of the light source mounting position are provided in the receiving groove 10. The light source assembly is connected and fixed to the light source mounting position, and the rotating cover 2 is rotatably connected to the receiving groove 10. The rotating cover 2 includes a transparent cover body 20, a rotating connecting ring 22 and a transmission gear ring 21 integrally formed at the lower end of the transparent cover body 20. The rotating connecting ring 22 and the transmission gear ring 21 are concentric ring structures and are placed in the receiving groove 10. The cantilever hook 12 is hooked on the rotating connecting ring 22, so that the rotating cover 2 can be rotatably connected to the receiving groove 10. The motor is connected to the transmission gear located in the receiving groove 10, and the transmission gear cooperates with the transmission gear ring 21 to drive the rotating cover 2 to rotate. The rotating connecting ring 22 and the transmission gear ring 21 are integrally formed with the transparent cover body 20, which simplifies the structure and assembly operation; the rotating cover 2 is rotatably connected to the receiving groove 10 through the cooperation of the rotating connecting ring 22 and the cantilever hook 12, and the transmission gear is driven to rotate by the motor, and the teeth on the transmission gear engage with the teeth on the transmission gear ring 21, thereby driving the rotating cover 2 to rotate. The cantilever hook 12 is distributed around the periphery of the light source installation position, and the cantilever hook 12 is set separately from the light source installation position so as not to affect the installation of the light source assembly. During assembly, the light source assembly is first installed to the light source installation position, and then the rotating cover 2 is assembled on the fixed seat 1. The overall assembly process is reduced and the assembly operation is simple.

[0033] The transparent cover 20 is a hollow cylinder with open upper and lower ends. A receiving ring is located within the lower end. A ring-shaped projection film roll is loaded into the upper end of the transparent cover 20. The lower end of the projection film is supported by the receiving ring and adhered to the inner wall of the transparent cover 20. The projection film can be removed from the transparent cover, making it easy to replace.

[0034] The upper end cover of the rotating cover 2 is provided with an upper projection film and is connected to a connecting ring 3. The connecting ring 3 presses and fixes the upper projection film to the upper end of the rotating cover 2. The connecting ring 3 includes an annular connecting wall 31 and a pressure ring 32 vertically connected to the inner side of the connecting wall 31. The connecting ring 3 is covered on the upper end of the transparent cover body 20. The inner side of the connecting wall 31 is tightly fitted with the outer side of the upper end of the transparent cover body 20, and the pressure ring 32 is pressed on the edge of the upper projection film and the upper end surface of the transparent cover body 20. The upper projection film is fixed to the upper end of the transparent cover body 20 by the connecting ring 3. The upper projection film can be replaced by pulling out the connecting ring. The light source assembly emits light, projecting the projection film and the pattern on the upper projection film.

[0035] The thickness of the pattern layer on the projection film and the upper projection film is at the micron level, and the projection effect is good.

[0036] The light source installation position is set as a raised light source installation platform 11. The light source assembly includes an LED light source board, which is fixed on the light source installation platform 11 by screws, so that the LED light source board is located at the lower port position of the transparent cover 20, and the light output effect is good.

[0037] Furthermore, four cantilever hooks 12 are provided, evenly distributed in the front, back, left, and right directions of the receiving slot 10. Each cantilever hook 12 comprises a cantilever arm 121 extending upward from the bottom surface of the receiving slot 10, a stopper hook 122 protruding laterally from the cantilever arm 121, and a stopper spherical surface 123, located below the stopper hook 122. The rotating connecting ring 22 comprises an upwardly facing annular axial abutment surface 221 that mates with the stopper hook 122, and a laterally disposed annular radial abutment surface 222 with an arcuate cross-section that mates with the stopper spherical surface 123. During assembly, the rotating cover 2 is installed into the accommodating groove 10 from top to bottom, and the rotating connecting ring 22 squeezes the limiting hook 122 and the limiting spherical surface 123 to deform the cantilever hook 12, so that the cantilever hook 12 and the rotating connecting ring 22 are interlocked, and the limiting hook 122 lightly abuts on the axial abutment surface 221, so that the rotating cover 2 is limited in the axial direction, so that the rotating cover 2 cannot move up and down; the limiting spherical surface 123 lightly abuts on the radial abutment surface 222, so that the rotating cover 2 is limited in the radial direction, so that the rotating cover 2 cannot move forward, backward, left and right; through the axial and radial limitations of the rotating cover 2, the rotating cover 2 can only rotate, ensuring the stable cooperation and transmission of the transmission gear and the transmission gear ring 21, thereby ensuring the stable rotation of the rotating cover 2 in the accommodating groove 10.

[0038] The lower end surface of the rotating connecting ring 22 is an arc surface, which can reduce the friction force when the rotating connecting ring 22 and the cantilever hook 12 are snap-fitted together, thereby facilitating assembly.

[0039] The transmission gear ring 21 comprises an annular body and transmission teeth 210 disposed on its inner wall. The transmission gear is located within the inner ring of the transmission gear ring 21. A rotating connecting ring 22 is located within the inner ring of the transmission gear ring 21. The rotating connecting ring 22 is spaced relative to the transmission gear ring 21, with its lower end higher than that of the transmission gear ring 21. The transmission gear is located below the rotating connecting ring 22. The motor is mounted on the back of the receiving tank 10, and its drive shaft extends through the receiving tank 10 to connect with the transmission gear. The structural design is rational and compact.

[0040] The rotating cover 2 also includes a receiving ring 23 that protrudes radially outward from the lower outer wall of the transparent cover body 20. An annular receiving platform 14 is provided at the upper end of the receiving groove 10. The receiving ring 23 rests on the receiving platform 14, preventing the lower end of the transmission gear ring 21 from contacting the bottom surface of the receiving groove 10. The receiving platform 14 provides upward support for the rotating cover 2, and the limiting hook 122 lightly presses on the axial abutment surface 221, preventing the rotating cover 2 from moving up and down.

[0041] The inner wall surface 13 of the receiving groove 10 is provided with a plurality of first protrusions 131 spaced apart and arranged around the inner wall and protruding inward. The outer wall surface of the annular body contacts the first protrusions 131, and when the rotating cover 2 rotates, friction occurs between the outer wall surface of the annular body and the first protrusions 131. The receiving platform 14 is provided with a plurality of second protrusions 141 spaced apart and arranged around the inner wall surface 13 of the receiving groove 10, and the receiving ring 23 rests on the second protrusions 141 of the receiving platform 14. When the rotating cover 2 rotates, friction occurs between the receiving ring 23 and the second protrusions 141. The provision of the first protrusions 131 is used to reduce friction between the outer wall surface of the annular body and the inner wall surface 13 of the receiving groove 10; the provision of the second protrusions 141 is used to reduce friction between the receiving ring 23 and the receiving platform 14, thereby reducing the resistance to the rotation of the rotating cover 2.

[0042] The projection lamp also includes an outer cover 4. The rotating cover 2 is removed and the outer cover 4 is placed on the fixed base 1 to form a night light. Figure 7 This product can be used as a night light or a projection light.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A projection lamp, characterized in that: include: The fixing seat includes a receiving groove recessed downward from the top surface thereof; The receiving groove is provided with a light source installation position and a plurality of cantilever hooks located on the periphery of the light source installation position; A light source assembly is installed at the light source installation position; The rotating cover comprises a transparent cover body, a rotating connecting ring and a transmission gear ring integrally formed at the lower end of the transparent cover body, and a projection film attached to the side wall of the transparent cover body; the rotating connecting ring and the transmission gear ring are concentric ring structures and are placed in the receiving groove, and the cantilever hook is hooked on the rotating connecting ring; The motor is connected to the transmission gear located in the receiving groove, and the transmission gear cooperates with the transmission gear ring to drive the rotating cover to rotate.

2. The projection lamp according to claim 1, wherein The cantilever hook includes a cantilever extending upward from the bottom surface of the accommodating groove, a limit hook and a limit spherical surface protruding laterally on the cantilever, the limit spherical surface is located below the limit hook, and the rotating connecting ring includes an upwardly arranged annular axial abutment surface adapted to the limit hook and a laterally arranged annular radial abutment surface with an arc-shaped cross section adapted to the limit spherical surface; the limit hook lightly abuts against the axial abutment surface to limit the axial position of the rotating cover; the limit spherical surface lightly abuts against the radial abutment surface to limit the radial position of the rotating cover.

3. The projection lamp according to claim 2, wherein: The lower end surface of the rotating connecting ring is an arc surface.

4. The projection lamp according to claim 1, 2 or 3, characterized in that: The light source installation position is set as a raised light source installation platform.

5. The projection lamp according to claim 4, wherein: The upper end cover of the rotating cover is provided with an upper projection film and is connected with a connecting ring. The connecting ring presses and fixes the upper projection film on the upper end of the rotating cover.

6. The projection lamp according to claim 4, wherein: The transmission gear ring includes an annular body and transmission teeth arranged on the inner wall surface of the annular body, and the transmission gear is located at the inner ring position of the transmission gear ring.

7. The projection lamp according to claim 6, wherein The rotating connecting ring is located at the inner ring position of the transmission gear ring, the rotating connecting ring and the transmission gear ring are relatively spaced apart, and the lower end of the rotating connecting ring is higher than the lower end of the transmission gear ring, and the transmission gear is located below the rotating connecting ring.

8. The projection lamp according to claim 7, wherein: The motor is mounted on the back of the receiving slot, and the transmission shaft of the motor passes through the receiving slot to be connected with the transmission gear.

9. The projection lamp according to claim 7, wherein: The rotating cover further includes a receiving ring protruding radially outward from the outer wall surface of the lower end of the transparent cover body. The upper end of the accommodating groove is provided with an annular receiving platform, and the receiving ring is placed on the receiving platform.

10. The projection lamp according to claim 9, wherein The inner wall surface of the accommodating groove is provided with a plurality of first protrusions distributed in a circumferential manner and protruding inward, and the outer wall surface of the annular body is in contact with the first protrusions; the receiving platform is provided with a plurality of second protrusions distributed in a circumferential manner and protruding upward, and the receiving ring is placed on the second protrusions of the receiving platform.

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