A projection lamp

Abstract

The utility model discloses a projection lamp, including the base with first axis, the base includes the horn with second axis, first axis is the central axis of base, and second axis is the central axis of horn, and the base is provided with horn accommodating cavity around second axis, and the horn is accommodated in horn accommodating cavity, and horn accommodating cavity is equipped with a plurality of horn holes, and the horn is set to a plurality of horn holes, wherein, first axis and second axis are located on the same plane, including first axis and second axis coincide, or first axis and second axis set up mutually parallel, first light source subassembly, fixed in base, cover and set up in the first projection sheet of cover, and the cover is fixed in base, the utility model discloses the axis of base and horn coplanar arrangement makes the installation of various components in base compact, reduces the demand of horizontal extension, maintains the overall volume of base, satisfies the miniaturization design of product, simplifies the alignment process of installation process, avoids the assembly problem caused by axis misplacement.

Description

[Technical Field]

[0001] This utility model relates to the technical field of projection lamps, and in particular to a projection lamp in which the central axis of the base and the central axis of the speaker are coplanar. [Background Technology]

[0002] An existing projection lamp includes a housing, a base mounted on the housing, a through hole penetrating the base, a speaker mounted in the through hole, a main board and a lamp board mounted on the base, and a lampshade covering the lamp board. The base is injection molded. The lampshade protrudes into the inner cavity of the housing. The main board includes buttons and a charging port mounted thereon. The lamp board is located above the speaker.

[0003] The speaker, motherboard, battery, and motor of the aforementioned sound-producing device must be installed on the base. Due to the limited space inside the base, there may not be enough space to install the speaker. Alternatively, if the speaker is placed on the side wall, the base size may increase. Or, if the central axis of the projection lamp base and the central axis of the speaker are not coplanar, installation may be inconvenient. Increasing the area of ​​the base may also fail to meet the requirements for product miniaturization.

[0004] Therefore, a new projection lamp needs to be designed to solve the above problems. [Utility Model Content]

[0005] In view of the problems faced by the prior art, this utility model provides a projection lamp in which the central axis of the base and the central axis of the speaker coincide or are parallel.

[0006] To achieve the above objectives, the present invention employs the following technical means:

[0007] A projection lamp, comprising:

[0008] A base having a first axis, the base including a horn having a second axis, the first axis being the central axis of the base, the second axis being the central axis of the horn, the base having a horn receiving cavity around the second axis, the horn being received in the horn receiving cavity, the horn receiving cavity having multiple horn holes, the horn being arranged corresponding to the multiple horn holes; wherein, the first axis and the second axis are located on the same plane, including the first axis and the second axis being coincident, or the first axis and the second axis being arranged parallel to each other; a first light source assembly fixed to the base; a cover and a first projection sheet disposed on the cover, the cover being fixed to the base.

[0009] Furthermore, the cavity wall of the horn receiving cavity extends upward from the bottom surface of the base, and a cavity is formed between the diaphragm of the horn and the bottom surface of the horn receiving cavity.

[0010] Furthermore, the horn hole extends vertically through the bottom surface of the base, and the plane containing the horn hole is concave upward along the first axis, with a distance between it and the lowest point of the base.

[0011] Furthermore, the base is provided with a motor and a motor receiving slot on one side of the horn receiving cavity, the motor being at least partially received in the motor receiving slot, the central axis of the motor receiving slot being a third axis parallel to the first axis.

[0012] Furthermore, the base is provided with a fixing part and a locking part. The upper end of the locking part prevents the speaker from moving upward, and the lower end of the locking part is fixed to the fixing part.

[0013] Furthermore, the first projection sheet is arranged around the first light source assembly, the first light source assembly includes an extension and a lamp body disposed on the side wall and / or top surface of the extension, the lamp body being disposed above the bottom end of the first projection sheet.

[0014] Furthermore, the projection lamp further includes a second light source assembly, a second projection sheet, and a lens assembly. The base is provided with a slot and a plug-in plate that can be movably inserted into the slot. The second projection sheet is installed in the plug-in plate. The second light source assembly forms a projection light effect after passing through the second projection sheet and the lens assembly. The projection effect formed by the first light source assembly after passing through the first projection sheet is set around the projection light effect.

[0015] Furthermore, the base includes a support base, the first projection sheet is mounted on the support base, the first light source assembly includes at least one lamp bead, and the maximum distance between the lamp bead and the first projection sheet is in the range of 2cm to 50cm.

[0016] Furthermore, the cover includes a first part and a second part disposed above the first part. At least one slot is provided at the connection between the first part and the second part. The first projection sheet includes a lower projection sheet mounted on the first part and an upper projection sheet mounted on the second part. The upper projection sheet can be movably inserted into the slot.

[0017] Furthermore, the first part includes a main body extending in a vertical direction and a support part extending from the main body in a horizontal direction, and the second part includes a limiting part restricting the vertical movement of the upper projection sheet, the upper projection sheet being located between the support part and the limiting part.

[0018] Furthermore, the cover includes a first part extending in a vertical direction and a support part extending horizontally from the first part. The projection sheet includes an upper projection sheet adsorbed on the support part and a lower projection sheet mounted on the first part. A magnetic element is provided on the mating end face of the support part and the upper projection sheet, and a metal element is provided on the mating end face of the upper projection sheet and the support part. The magnetic element generates a magnetic force on the metal element, so that the cover and the upper projection sheet are magnetically connected.

[0019] Compared with the prior art, the projection lamp of this utility model has the following beneficial effects:

[0020] By setting a base with a first axis and a speaker with a second axis, the first axis being the central axis of the base and the second axis being the central axis of the speaker, the first axis and the second axis being located on the same plane, including the first axis coinciding with the second axis or the first axis being parallel to each other; this utility model sets the axes of the base and the speaker to be coplanar, which makes the installation of various components in the base compact, reduces the need for lateral expansion, maintains the overall volume of the base, and meets the requirements of product miniaturization design; secondly, the coplanar setting of the base and the speaker can simplify the alignment process during installation, avoid assembly problems caused by axis misalignment, and improve installation flexibility. [Attached Image Description]

[0021] Figure 1 This is an overall structural diagram of a projection lamp proposed in this utility model;

[0022] Figure 2 for Figure 1 3D exploded view;

[0023] Figure 3 A 3D view of the base after the cover plate has been removed;

[0024] Figure 4 for Figure 1 Top view;

[0025] Figure 5 for Figure 4 A sectional view taken along line AA;

[0026] Figure 6 This is a structural diagram of the first, second, and third axes;

[0027] Figure 7 This is an exploded perspective view of the second embodiment;

[0028] Figure 8 These are exploded perspective views of the third and fourth embodiments;

[0029] Figure 9 for Figure 8 A top view removing the cover and the first projection sheet;

[0030] Figure 10 for Figure 9 A sectional view taken along line BB;

[0031] Figure 11 This is an exploded 3D view of the base and the cover.

[0032] Figure 12 for Figure 11 Top view;

[0033] Figure 13 for Figure 12 A sectional view taken along line CC.

[0034] Figure 14 This is a three-dimensional exploded view of the cover and the first projection sheet;

[0035] Figure 15 for Figure 14 A magnified view of a section at point G.

[0036] Figure 16 This is a three-dimensional exploded view of the cover.

[0037] Explanation of reference numerals in the accompanying drawings for specific embodiments:

[0038]

[0039]

Detailed Implementation Methods

[0040] To facilitate a better understanding of the purpose, structure, features, and effects of this utility model, the present utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0041] First embodiment:

[0042] like Figures 1 to 6 As shown, the projection lamp 100 of the first embodiment of the present invention includes a base 1, a first light source assembly 3 mounted on the base 1, a cover 4 covering the first light source assembly 3, and a first projection sheet 5 mounted on the cover 4.

[0043] like Figure 3 , Figure 5 and Figure 6As shown, the base 1 includes a chassis 11 and a cover plate 12 covering the chassis 11. The chassis 11 includes a horn 111 with a second axis, a horn receiving cavity 112 for receiving the horn 111, a fixing part 117, a locking fastener fixed to the fixing part 117, a motor receiving slot 113, a circuit board 114, and a battery. The cover plate 12 includes a motor 121 fixed to the bottom surface of the cover plate 12. The cover plate 12 is fixed to the screw hole of the chassis 11 by screws. The base 1 has a first axis, which is the central axis of the base 1. The second axis of the horn 111 is the central axis of the horn 111. The first axis and the second axis are located on the same plane, including the first axis and the second axis being coincident or parallel to each other. The cover plate 12 has an opening that extends vertically through the cover plate 12. A protrusion extends upward from the side wall of the opening. The horn receiving cavity 112 is arranged around the second axis, and the cavity wall of the horn receiving cavity 112 extends upward from the bottom surface of the base 1. A cavity is formed between the diaphragm 1111 of the horn 111 and the bottom surface of the horn receiving cavity 112. The horn receiving cavity 112 is provided with a plurality of horn holes 1121, and the horn 111 is provided corresponding to the plurality of horn holes 1121. The horn holes 1121 penetrate the bottom surface of the base 1 vertically, and the plane containing the horn holes 1121 is concave upward along the first axis, with a gap between it and the lowest point of the base 1. The fixing part 117 extends upward from the bottom surface of the base 1 and is arranged around the horn receiving cavity 112. The locking fastener is a large flat head self-tapping screw, the lower end of which is threadedly connected to the fixing part 117, and the nut end of which abuts against the frame 1112 of the horn 111, thereby preventing the horn 111 from moving upward. The motor receiving slot 113 is located on one side of the horn receiving cavity 112. The central axis of the motor receiving slot 113 is a third axis, which is parallel to the first axis. The motor 121 is at least partially received in the motor receiving slot 113.

[0044] like Figure 2 As shown, the first light source assembly 3 includes at least one LED bead, an opening, several screw holes, and a terminal electrically connected to the circuit board 114, all disposed on the upper surface of the first light source assembly 3. The first light source assembly 3 has a through hole running vertically through it, through which a wire connected to the circuit board 114 passes and connects to the terminal. The first light source assembly 3 is located above the opening of the cover plate 12. The protrusion extends into the pre-reserved opening of the first light source assembly 3, positioning the first light source assembly 3 in the opening, and fixing it in the screw holes with screws. The first light source assembly 3 dissipates heat through a heat sink 32 attached to its bottom, or through heat dissipation holes 116 provided in the base 1.

[0045] like Figure 2 As shown, the cover 4 includes a first part 41 and a second part 42 covering the first part 41. The second part 42 is pressed into the first part 41 to form a fixed structure. The bottom of the cover 4 is provided with a buckle. The cover 4 is fixed to the base 1 and covers the first light source assembly 3. The light from the first light source assembly 3 is projected onto the first projection sheet 5 and forms a projection effect after passing through the first projection sheet 5. The top of the cover plate 12 is provided with a corresponding slot for the buckle. The buckle is fixed to the slot, thereby preventing the cover 4 from detaching from the base 1.

[0046] like Figure 2 As shown, the first projection sheet 5 includes an upper projection sheet 51 mounted on the second part 42 and a lower projection sheet 52 mounted on the first part 41, meaning the first projection sheet 5 is separable from the cover 4. The first light source assembly 3 is located within the space enclosed by the upper projection sheet 51 and the lower projection sheet 52. The lower projection sheet 52 has an unfolded state and a closed state. In its unfolded state, the lower projection sheet 52 is a flat sheet of film, facilitating the printing of patterns onto the transparent film. In its closed state, the lower projection sheet 52 forms a cylinder and is housed within the inner surface of the first part 41, meaning the shape of the lower projection sheet 52 in its closed state matches the shape of the first part 41, completely obscuring the inner surface of the first part 41. In this embodiment, the upper projection sheet 51 is a circular sheet of film, with its circular edge placed on the upper wall of the second part 42 and pressed and fixed between the first part 41 and the second part 42 by the second part 42, preventing the upper projection sheet 51 from falling off.

[0047] In another aspect of this embodiment, such as Figure 11 , Figure 12 and Figure 13 As shown, the system includes a support base 122, on which the first projection sheet 5 is mounted. The maximum distance between the lamp bead and the first projection sheet 5 is between 2cm and 50cm. The support base 122 also includes a fixing groove 1222 for supporting the first projection sheet 5 and a locking part 1221 at the bottom. The first projection sheet 5 is mounted in the fixing groove 1222 of the support base 122. In this embodiment, the fixing groove 1222 is a U-shaped groove, and the bottom end of the first projection sheet 5 is placed in the U-shaped groove to form a fixed position. The base 1 is provided with a locking groove corresponding to the locking part 1221. The locking part 1221 is locked with the locking groove to prevent the support base 122 from detaching from the base 1.

[0048] The maximum distance between the LED and the first projection panel 5 refers to the longest diagonal distance between the LED closest to the first projection panel 5 and the first projection panel 5. Figure 12The distance H in the middle; when this distance is less than 2cm, the projection effect formed by the light passing through the first projection sheet 5 is blurry, and the pattern elements on the first projection sheet 5 cannot be too dense, so it is impossible to achieve a clear or rich pattern projection effect; when this distance is greater than 50cm, the first projection sheet 5 needs to completely cover the lamp beads, which requires a large volume of the first projection sheet 5 and is costly, which does not meet the production needs.

[0049] In another aspect of this embodiment, such as Figure 14 and Figure 15 As shown, at least one slot 43 is provided at the connection between the first part 41 and the second part 42. The first projection sheet 5 includes a lower projection sheet 52 mounted on the first part 41 and an upper projection sheet 51 mounted on the second part 42. The upper projection sheet 51 is movably inserted into the slot 43. The first part 41 includes a main body part 411 extending in the vertical direction and a support part 412 extending from the main body part 411 in the horizontal direction. The second part 42 includes a limiting part 413 that restricts the vertical movement of the upper projection sheet 51. The upper projection sheet 51 is located between the support part 412 and the limiting part 413.

[0050] In another aspect of this embodiment, such as Figure 16 As shown, the cover 4 includes a first part 41 extending in the vertical direction and a support part 412 extending from the first part 41 in the horizontal direction. The first projection sheet 5 includes an upper projection sheet 51 adsorbed on the support part 412 and a lower projection sheet 52 installed on the first part 41. A magnetic element 4112 is provided on the mating end face of the support part 412 and the lower projection sheet 52. A metal element 4113 is provided on the mating end face of the lower projection sheet 52 and the support part 412. The magnetic element 4112 generates a magnetic force on the metal element 4113, so that the cover 4 and the lower projection sheet 52 are magnetically connected.

[0051] Second embodiment:

[0052] Based on the first embodiment, the second embodiment of this utility model makes further improvements to the first light source assembly 3:

[0053] like Figure 7As shown, in the second embodiment of the present invention, the projection lamp 100 includes a first light source assembly 3 comprising an extension 31 and a lamp body 311 disposed on the sidewall and / or top surface of the extension 31. The extension 31 includes a horizontal lamp plate 312 and three vertical lamp plates 313. The horizontal lamp plate 312 has grooves for inserting and connecting the vertical lamp plates 313, such that the three vertical lamp plates 313 are all vertically connected to the horizontal lamp plate 312. The horizontal lamp plate 312 forms the top surface of the extension 31, and the vertical lamp plates 313 form the sidewalls of the extension 31. The extension 31 extends upward along a first axis into the space enclosed by a first projection sheet 5, which surrounds the first light source assembly 3. The lamp body 311 is disposed above the bottom end of the first projection sheet 5.

[0054] Third embodiment:

[0055] Based on the first embodiment, the third embodiment of this utility model proposes a projection lamp with eye protection detection function:

[0056] like Figure 8 and Figure 9 As shown, the base 1 is equipped with a circuit board 114 and an eye protection detection device 2. The eye protection detection device 2 includes a transmitting tube 21 and a receiving tube 22. The transmitting tube 21 emits a signal toward the first projection sheet 5. When the operator replaces the first projection sheet 5, the eye protection detection device 2 is in a high-level state. The circuit board 114 reduces the brightness of the first light source component 3 or turns off the first light source component 3 according to the signal of the eye protection detection device 2. In this embodiment, the eye protection detection device 2 is an infrared photodetector, which includes an infrared transmitting tube and an infrared receiving tube. The working principle is as follows: the infrared transmitting tube emits infrared light toward the first projection sheet 5, the first projection sheet 5 reflects the infrared light, the infrared receiving tube receives the reflected infrared light, and converts the light signal into an electrical signal and transmits it to the circuit board 114. The circuit board 114 then reduces or turns off the brightness of the first light source component 3.

[0057] Fourth embodiment:

[0058] Based on the first embodiment, the fourth embodiment of this utility model proposes a high-definition projection lamp:

[0059] like Figures 8-10As shown, the projection lamp further includes a second light source assembly 6, a second projection sheet 7, and a lens group 8. The base 1 is provided with a slot 115 and a plug-in plate 1151 that can be inserted into the slot 115. The second projection sheet 7 is installed in the plug-in plate 1151. The second light source assembly 6 forms a projection light effect after passing through the second projection sheet 7 and the lens group 8. The projection effect formed by the first light source assembly 3 after passing through the first projection sheet 5 is set around the projection light effect. In this embodiment, the lens group 8 includes two convex lenses, a focusing lens, an imaging lens, and a wide-angle lens. The two convex lenses are located between the second light source assembly 6 and the second projection sheet 7 in the vertical direction. The focusing lens, the imaging lens, and the wide-angle lens are located above the second projection sheet 7 in the vertical direction. The light emitted by the second light source assembly 6 first passes through the two convex lenses to the second projection sheet 7, and then passes through the focusing lens, the imaging lens, and the wide-angle lens to form a projection light effect and project it outward.

[0060] In summary, the projector of this utility model has the following beneficial effects:

[0061] (1) By setting a base 1 with a first axis and a horn 111 with a second axis, the first axis is the central axis of the base 1 and the second axis is the central axis of the horn 111. The first axis and the second axis are located on the same plane, including the first axis and the second axis coinciding or the first axis and the second axis being arranged parallel to each other; the present invention sets the axes of the base 1 and the horn 111 to be coplanar, so that the installation of various components in the base 1 is compact, reducing the need for lateral expansion, maintaining the overall volume of the base 1, and meeting the miniaturization design of the product; secondly, the coplanar setting of the base 1 and the horn 111 can simplify the alignment process during installation, avoid assembly problems caused by axis misalignment, and improve installation flexibility.

[0062] (2) By setting the cavity wall of the speaker receiving cavity 112 to extend upward from the bottom surface of the base 1, a cavity is formed between the diaphragm 1111 of the speaker 111 and the bottom surface of the speaker receiving cavity 112; the speaker receiving cavity 112 of this utility model can allow music to diffuse outward directly through the speaker hole 1121, avoiding the reflection attenuation caused by the obstruction of sound waves, as well as the reverberation caused by multiple reflections in the base 1. At the same time, no additional sound guiding structure is required, saving space and meeting the requirements of miniaturization.

[0063] (3) By setting the horn hole 1121 to penetrate the bottom surface of the base 1 vertically, and the plane where the horn hole 1121 is located is concave upward along the first axis, with a distance between it and the lowest point of the base 1; the concave setting of the plane where the horn hole 1121 is located in this utility model is intended to prevent sound waves from being blocked. If the horn hole 1121 is in close contact with the placement surface (such as a desktop), the sound waves will be blocked by the desktop, resulting in the absorption of low frequencies and the chaotic reflection of high frequencies, affecting the sound quality. The concave design of the horn hole 1121 allows the sound waves to diffuse freely in all directions, ensuring the clarity and dynamic range of the sound.

[0064] (4) By setting the base 1 to have a motor 121 and a motor receiving slot 113 on one side of the speaker receiving cavity 112, the motor 121 is at least partially received in the motor receiving slot 113, and the central axis of the motor receiving slot 113 is a third axis, which is parallel to the first axis; the present invention sets the motor receiving slot 113 to receive the motor 121, so that the motor 121 is arranged parallel to the central axis of the base 1, avoiding redundant space caused by staggered layout, and meeting the requirements of miniaturization design.

[0065] (5) The base 1 is provided with a fixing part 117 and a locking part. The upper end of the locking part blocks the speaker 111 from moving upward, and the lower end of the locking part is fixed to the fixing part 117. The speaker 111 is fixed by a large flat head self-tapping screw. Compared with ordinary screws, the large flat head design increases the contact area, so that the pressure is evenly distributed on the frame 1112, avoiding local deformation or loosening, and enhancing the structural stability of the speaker 111.

[0066] (6) By setting the first projection sheet 5 around the first light source assembly 3, the first light source assembly 3 includes an extension 31 and a lamp body 311 disposed on the side wall and / or top surface of the extension 31. The lamp body 311 is disposed higher than the bottom of the first projection sheet 5. The present invention sets the first light source in the upwardly extending extension 31, which expands the illumination coverage range, realizes wide-angle light emission, avoids the directional limitation of traditional bottom light sources, and ensures that the first projection sheet 5 is uniformly illuminated. Secondly, the light emission position of the first light source is higher than the bottom of the first projection sheet 5, which is a height limitation, so that the first light source directly illuminates the effective area and avoids the light being blocked.

[0067] (7) The projection lamp is further configured to include a second light source assembly 6, a second projection sheet 7, and a lens group 8. The base 1 is provided with a slot 115 and a plug-in plate 1151 that can be movably inserted into the slot 115. The second projection sheet 7 is installed on the plug-in plate 1151. The second light source assembly 6 forms a projection light effect after passing through the second projection sheet 7 and the lens group 8. The projection effect formed by the first light source assembly 3 after passing through the first projection sheet 5 is set around the projection light effect. The present invention sets the second light source assembly 6, which takes into account both conventional projection function and slide projection function. The first light source assembly 3 is responsible for conventional image projection, and the second light source assembly 6 is for static slide projection. By setting the second projection sheet 7 on the plug-in piece, the user can easily insert or remove the second projection sheet 7 to achieve flexible replacement. For the characteristics of static slide projection, the lens group optimizes the optical path design to ensure high resolution and low distortion projection effect.

[0068] (8) By setting the base 1 to include a support base, the first projection sheet is installed on the support base, the first light source assembly includes at least one lamp bead, and the maximum distance between the lamp bead and the first projection sheet is between 2cm and 50cm. Without changing the size of the base 1, this utility model increases the projection range and clarity, and the volume of the pattern in the projection effect will also increase accordingly. Compared with traditional projection lamps, more and richer pattern shapes can be arranged.

[0069] (9) The cover 4 is configured to include a first part 41 and a second part 42 disposed above the first part 41. At least one slot 43 is provided at the connection between the first part 41 and the second part 42. The first projection sheet 5 includes a lower projection sheet 52 mounted on the first part 41 and an upper projection sheet 51 mounted on the second part 42. The upper projection sheet 51 is movably inserted into the slot 43. The first part 41 includes a main body part 411 extending in the vertical direction and a support part 412 extending from the main body part 411 in the horizontal direction. The second part 42 includes a limiting part 413 that restricts the vertical movement of the upper projection sheet 51. The upper projection sheet 51 is located on the support part. Between part 412 and limiting part 413; this utility model has a slot 43 at the connection between the first part 41 and the second part 42 of the cover 4, so that the upper projection sheet 51 can be horizontally pushed into the slot 43 to complete the fixing or horizontally pulled out for replacement. The extension part 414 expands the opening space of the slot 43, which facilitates the user's operation when inserting and removing the projection sheet. The pull-out installation method allows the user to complete the replacement of the upper projection sheet with one hand, realizing the quick switching of the projection sheet; secondly, a limiting part 413 is set in the vertical direction of the slot 43 to restrict the up and down movement of the upper projection sheet 51 by physical blocking, effectively preventing the upper projection sheet 51 from accidentally falling off or displacing, thereby improving the reliability and safety of the equipment.

[0070] (10) By setting the cover 4 to include a first part 41 extending in the vertical direction and a support part 412 extending from the first part 41 in the horizontal direction, the first projection sheet 5 includes an upper projection sheet 51 adsorbed on the support part 412 and a lower projection sheet 52 installed on the first part 41. The support part 412 and the lower projection sheet 52 are provided with a magnetic element 4112 on their mating end face, and the lower projection sheet 52 and the support part 412 are provided with a metal element 4113 on their mating end face. The magnetic element 4112 generates a magnetic force on the metal element 4113, so that the cover 4 and the lower projection sheet 52 are magnetically connected. With the magnetic connection of the first part 41 and the second part 42, the user can easily lift the second part 42 of the cover 4 and directly take out or replace the upper projection sheet 51. Compared with the existing snap-fit ​​method, it is more convenient to disassemble and assemble, and simplifies the replacement process.

[0071] The above detailed description is only a description of the preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.

Claims

1. A projection lamp, characterized in that, include: A base having a first axis, the base including a horn having a second axis, the first axis being the central axis of the base, the second axis being the central axis of the horn, the base having a horn receiving cavity around the second axis, the horn being received in the horn receiving cavity, the horn receiving cavity having multiple horn holes, and the horn being arranged corresponding to the multiple horn holes; wherein, the first axis and the second axis are located on the same plane, including the first axis and the second axis being coincident, or the first axis and the second axis being parallel to each other; The first light source assembly is fixed to the base; The cover and a first projection sheet disposed on the cover, the cover being fixed to the base.

2. A projection lamp as described in claim 1, characterized in that: The cavity wall of the horn receiving cavity extends upward from the bottom surface of the base, and a cavity is formed between the diaphragm of the horn and the bottom surface of the horn receiving cavity.

3. A projection lamp as described in claim 2, characterized in that: The horn hole extends vertically through the bottom surface of the base, and the plane containing the horn hole is concave upward along the first axis, with a distance between it and the lowest point of the base.

4. A projection lamp as described in claim 3, characterized in that: The base is provided with a motor and a motor receiving slot on one side of the horn receiving cavity. The motor is at least partially received in the motor receiving slot, and the central axis of the motor receiving slot is a third axis, which is parallel to the first axis.

5. A projection lamp as described in claim 1, characterized in that: The base is provided with a fixing part and a locking part. The upper end of the locking part prevents the speaker from moving upward, and the lower end of the locking part is fixed to the fixing part.

6. A projection lamp as described in claim 1, characterized in that: The first projection sheet is arranged around the first light source assembly, the first light source assembly includes an extension and a lamp body disposed on the side wall and / or top surface of the extension, the lamp body being disposed above the bottom end of the first projection sheet.

7. A projection lamp as described in any one of claims 1-6, characterized in that: The projection lamp further includes a second light source assembly, a second projection sheet, and a lens group. The base is provided with a slot and a plug-in plate that can be inserted into the slot. The second projection sheet is installed on the plug-in plate. The second light source assembly forms a projection light effect after passing through the second projection sheet and the lens group. The projection effect formed by the first light source assembly after passing through the first projection sheet is set around the projection light effect.

8. A projection lamp as described in any one of claims 1-6, characterized in that: The base includes a support base, the first projection sheet is mounted on the support base, the first light source assembly includes at least one lamp bead, and the maximum distance between the lamp bead and the first projection sheet is in the range of 2cm to 50cm.

9. A projection lamp as described in any one of claims 1-6, characterized in that: The cover includes a first part and a second part disposed above the first part. At least one slot is provided at the connection between the first part and the second part. The first projection sheet includes a lower projection sheet installed in the first part and an upper projection sheet installed in the second part. The upper projection sheet can be movably inserted into the slot.

10. A projection lamp as described in claim 9, characterized in that: The first part includes a main body extending in a vertical direction and a support part extending from the main body in a horizontal direction. The second part includes a limiting part that restricts the vertical movement of the upper projection sheet, and the upper projection sheet is located between the support part and the limiting part.

11. A projection lamp as described in any one of claims 1-6, characterized in that: The cover includes a first part extending in a vertical direction and a support part extending horizontally from the first part. The projection sheet includes an upper projection sheet adsorbed on the support part and a lower projection sheet mounted on the first part. A magnetic element is provided on the mating end face of the support part and the upper projection sheet, and a metal element is provided on the mating end face of the upper projection sheet and the support part. The magnetic element generates a magnetic force on the metal element, so that the cover and the upper projection sheet are magnetically connected.

Images