Mapping equipment

Abstract

The utility model discloses a mapping device, comprising a seat body; the projection assembly is movably connected to the seat body and swings upwards and / or downwards or leftwards and / or rightwards by taking the seat body as a base point; the connection structure of the projection assembly and the seat body is arranged to be pin shaft connection or magnetic attraction connection or hoop connection or spherical connecting rod connection or magnetic attraction connection or damping hinge connection or hinge connection or hinge connection or gear connection or universal joint connection or connecting rod connection. The projection assembly comprises a lamp body part, a light condensation part arranged around the lamp body part, a projection screen located above the light condensation part and a lens group located above the projection screen, the light condensation part is arranged around the contour of the projection screen, and the lamp body part comprises internal luminous flux and external luminous flux arranged around the internal luminous flux; at least part of external luminous flux of the lamp body part is refracted or reflected at least once through the light gathering part, then penetrates through the projection screen and the lens group and is projected outwards, and a user can adjust the projection angle at will according to the position needing projection.

Description

[Technical Field]

[0001] This utility model relates to the technical field of imaging equipment, and in particular to an adjustable-angle imaging device. [Background Technology]

[0002] An existing imaging device includes a housing, and mounted on the housing are an LED light, a diffuse reflector, a backlight collimating Fresnel lens, a heat insulation plate, a display screen, a reflective glass, a lens assembly, a cooling fan, a mounting plate, and the housing itself. The LED light, diffuse reflector, backlight collimating Fresnel lens, heat insulation plate, display screen, reflective glass, lens assembly, and cooling fan are arranged sequentially from bottom to top. The diffuse reflector diffuses the light from the LED light into scattered reflected light. The light emitted by the light source passes sequentially through the diffuse reflector, backlight collimating Fresnel lens, heat insulation and brightness enhancement glass unit, liquid crystal display screen, reflective glass, and imaging lens before being projected outwards. The central axis of the light source is perpendicular to the central axis of the projection lens. An imaging Fresnel lens is fastened to the mounting plate, which is screwed to the bottom of the housing. A reflective glass at an angle to the imaging Fresnel lens is installed inside the housing, and an imaging lens is also installed inside the housing.

[0003] Because the imaging device described above is fixed to the housing with screws, the projection angle cannot be changed, and the user cannot adjust the projection position according to the scene, thus failing to meet the user's needs.

[0004] Therefore, a new imaging device needs to be designed to overcome the above problems. [Utility Model Content]

[0005] In view of the problems faced by the background technology, the present invention provides an adjustable-angle lyrics projection image device.

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

[0007] An imaging device includes: a base; and a projection assembly movably connected to the base and swinging upwards and / or downwards, or leftwards and / or rightwards with the base as a base point. The connection structure between the projection assembly and the base is configured as a pin connection, a magnetic connection, a clamp connection, a ball joint connection, a magnetic connection, a damping hinge connection, a hinge connection, a gear connection, a universal joint connection, or a connecting rod connection. The projection assembly includes a lamp body, a focusing element surrounding the lamp body, a projection screen located above the focusing element, and a lens assembly located above the projection screen. The focusing element is arranged around the contour of the projection screen. The lamp body includes an internal luminous flux and an external luminous flux surrounding the internal luminous flux. At least a portion of the external luminous flux of the lamp body is refracted or reflected at least once by the focusing element, passes through the projection screen and the lens assembly, and is projected outwards.

[0008] Furthermore, the horizontal direction is defined as the starting point for the swing of the projection component. The projection component rotates upward by 0° to 90° and / or downward by 0° to 90° and / or to the left or right by 0° to 90°, and the projection component is set to fixed focus, manual focus, or automatic focus.

[0009] Furthermore, the focusing element is arranged around the lamp body, and the focusing element has a lower opening and an upper opening arranged opposite to each other, as well as a plurality of reflectors constituting the upper opening and the lower opening. The reflectors gradually move away from the central axis of the focusing element from bottom to top, and the reflectors are arranged towards the lamp body. The inner surface of the reflectors is provided with a reflective surface.

[0010] Furthermore, the reflective surface is configured as an arc-shaped surface, and the inclination of the arc-shaped surface of the second reflector is greater than or equal to that of the arc-shaped surface of the first reflector.

[0011] Furthermore, the angle between the tangent of the arcuate surface of the first reflector and / or the second reflector and the central axis of the light-concentrating element gradually decreases.

[0012] Furthermore, the light-concentrating element includes a plurality of limiting blocks arranged around the opening, the plurality of limiting blocks restricting the projection screen from shifting in the horizontal direction, and the pressure block 317 of the housing restricts the projection screen from moving upward; or the projection screen is fixed to the light-concentrating element or the projection screen is fixed to the housing by adhesive.

[0013] Furthermore, the light-concentrating element includes two first reflectors and two second reflectors arranged opposite to each other. The length of the projection screen is defined as L, and the distance between the projection screen and the lamp body is defined as D. When the included angle between the two first reflectors is between 30° and 100°, the light utilization rate is 35% to 94%, X = 1.04 to 4.5, and D = 0.27L to 2L.

[0014] Furthermore, when the included angle between the two first reflectors is between 40° and 90°, the relationship between L and D satisfies D = 0.35L to 1.5L, the luminous flux utilization rate of the focusing element is 45% to 88%, and the illumination uniformity X = 1.04 to 4.3.

[0015] Furthermore, the imaging device further includes a projection component mounted on the base. The projection component includes a light source and at least one optical element located above the light source. The optical element is configured as a projection mask, an interference sheet, a corrugated sheet, a patterned sheet, or a beam splitter. When the projection component projects upward, and at least part of the peripheral light falls onto the wall, the projection effect formed by the projection component overlaps with the horizontal projection of the peripheral light of the projection component on the wall.

[0016] Furthermore, the projection screen is a black and white screen. When the projection screen projects lyrics, when a song is at a high note, the rotation speed of the first projection component gradually increases or presents a rhythmic light effect. When a song progresses to a low note, the rotation speed of the first projection component gradually decreases or remains constant.

[0017] Compared with the prior art, the imaging device of this utility model has the following beneficial effects:

[0018] The projection component is movably connected to the base and, with the base as the base, can swing up and / or down, or left and / or right. The connection structure between the projection component and the base is set as a pin connection, magnetic connection, clamp connection, ball joint connection, magnetic connection, damping hinge connection, hinge connection, gear connection, universal joint connection, or connecting rod connection. The projection component includes a lamp body, a focusing element arranged around the lamp body, a projection screen located above the focusing element, and a lens assembly located above the projection screen. The focusing element is arranged around the outline of the projection screen. The lamp body includes internal luminous flux and external luminous flux arranged around the internal luminous flux. At least a portion of the external luminous flux of the lamp body is refracted or reflected at least once by the focusing element and then passes through the projection screen and lens assembly to be projected outward. The user can freely adjust the projection angle according to the desired projection position. [Attached Image Description]

[0019] Figure 1 This is an exploded perspective view of the imaging device of this utility model;

[0020] Figure 2 for Figure 1 A 3D view of the projection component;

[0021] Figure 3 for Figure 2 Top view;

[0022] Figure 4 for Figure 3 A sectional view taken along line AA;

[0023] Figure 5 for Figure 2 3D exploded view;

[0024] Figure 6 for Figure 5 Top view of the central focusing element and projection screen;

[0025] Figure 7 for Figure 5 Exploded view of the central lamp body and the focusing element;

[0026] Figure 8 An exploded perspective view of the lamp body and focusing element according to another embodiment;

[0027] Explanation of reference numerals in the accompanying drawings for specific embodiments:

[0028] Imaging equipment 100 Base 1 Containment cavity 11 Pivot hole 112 Projection hole 113 Projection component 2 Light source 21 Optical element 22 Driver Component 23 Optical devices 24 Projection Component 3 Casing 31 Containment space 311 Pivot 312 Positioning pin 313 Positioning hole 314 315 Buckle part 316 317 Press Block Damping component 318 Lamp body 32 Concentrator 33 Lower opening 331 Top opening 332 First reflector 333 Second reflector 334 Reflective surface 335 Limit block 336 Leaving slot 337 Chamfered curved surface 338 Positioning shell 399 Reflector 340 Projection screen 34 Lens Group 35 Positioning ring 351 Imaging lens 352

Detailed Implementation Methods

[0029] 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.

[0030] like Figures 1 to 8 As shown, the imaging device 100 of this utility model includes a base 1, a projection component 2 and a projection assembly 3 mounted on the base 1. The central axis of the projection component 2 forms an angle θ with the central axis of the projection assembly 3, preferably 0° to 120°, where 0° ≤ θ ≤ 180°. The projection component 2 and the projection assembly 3 can be operated simultaneously or one of them can operate independently.

[0031] like Figure 1 and Figure 2 As shown, the base 1 includes a receiving cavity 1 and a pivot hole 112 and a projection hole 113 that are connected to the receiving cavity 1.

[0032] like Figure 1 , Figure 2As shown, the projection component 2 is housed in the receiving cavity 11. The projection component 2 includes a light source 21 and at least one optical element 22 located above the light source 21. The optical element 22 is configured as at least one of the following: a projection sheet, an interference sheet, a projection mask, a corrugated sheet, a grating sheet, a reflector, a convex lens, or a beam splitter. The light source 21 is at least one LED or laser, selected from monochromatic or multicolor, multi-sheet, standard or special LEDs or lasers. The projection component 2 also includes a driving assembly 23, which drives the light source 21 and / or the optical element 22 to rotate. The light source 21 or the optical element 22 is configured to rotate at a constant speed, a variable speed, or in the forward direction and / or in the reverse direction. In this embodiment, the projection component 2 further includes an optical device 24 located above the optical element 22. The optical device 24 is configured as at least one of the following: an aurora mask with an irregularly elongated lens, a condenser mask with multiple facets, or a condenser lens. The projection component 2 projects light onto a ceiling, wall, or floor, wherein the projection light effect includes at least one of the following: aurora borealis, galaxy, constellation, water ripples, sky, clouds, starry sky, moon, luminous pattern, sign, or commercial advertisement. The projection component 2 forms a gradient light effect, with the intensity of the projection optics gradually weakening from the center to the outer edge. The projection light effect formed by the projection component 2 is projected onto the ceiling, wall, or floor.

[0033] like Figure 5 , Figure 6 and Figure 7As shown, the projection component 3 is movably connected to the base 1, and swings up and down and / or left and right along the pivot hole 112 with the base 1 as the base point. The overlapping position of the lyrics, font or pattern projection formed by the projection component 3 with the light effect of the projection member 2 changes, or the lyrics, font or pattern projection formed by the projection component 3 overlaps with different forms of light effect formed by the projection member 2. The connection structure between the projection component and the base 1 is set as a pin connection, magnetic connection, clamp connection, ball joint connection, magnetic connection, damping hinge connection, hinge connection, gear connection, universal joint connection or connecting rod connection. The horizontal direction is defined as the starting point of the swing of the projection component 3. The projection component rotates 0° to 90° upward and / or downward and / or 0° to 90° to the left and / or right, and the projection component 3 is set to fixed focus, manual focus or automatic focus. The base 1 is defined as a seat, or the housing of the projection component 2 is defined as a seat, or an additional connecting piece fixedly connected to the base 1 can also be defined as a seat. The projection component 3 includes a housing 31, a lamp body 32, a focusing element 33, a projection screen 34, and an imaging lens 36 mounted on the housing 31. The lamp body 32, the focusing element 33, the projection screen 34, and the imaging lens 36 are arranged sequentially from bottom to top. The focal length of the imaging lens 36 is defined as F, and the distance between the projection screen 34 and the imaging lens 36 is between 1F and 2F. The projection component 3 includes a housing 31 and a receiving space 311 formed in the housing 31. The housing 31 includes a first shell and a second shell that are interlocked. The first shell is provided with a positioning pin 313 and a hook 315, and the second shell is provided with a positioning hole 314 and a fastening part 316. The positioning pin 313 cooperates with the positioning hole 314, and the hook 315 is fastened to the fastening part 316. Alternatively, the first housing 31 and the second housing 31 can be fixed by the hook 315 and / or positioning pin 313 or screw. The first housing or the second housing also includes an outwardly extending pivot portion 312 and a damping member 318, the damping member 318 enhancing the friction between the pivot portion 312 and the base 1. The pivot portion 312 and the damping member 318 together cooperate with the pivot hole 112 of the base 1 to form a pin connection structure. The projection assembly 3 includes only the lamp body 32, the focusing member 33, the projection screen 34, and the imaging lens 36, the lamp body 32 dissipating heat through an aluminum substrate and / or heat dissipation holes; or the projection assembly 3 includes only the lamp body 32, the focusing member 33, the heat-insulating light-transmitting plate, the projection screen 34, and the imaging lens 36, the lamp body 32 dissipating heat through an aluminum reflector and / or heat dissipation holes. The heat dissipation substrate is housed in the housing 31 and attached to the lamp body 32. The focusing element 33 includes a lower opening 331 and an upper opening 332 that are interconnected. The upper opening 332 is larger than the lower opening 331, and the lower opening 331 is arranged around the lamp body 32.The focusing element 33 includes at least one reflector forming the upper opening 332 and the lower opening 331. The inner surface of the reflector forms a reflective surface 335, which is composed of a reflective film or a reflective sheet. Alternatively, the focusing element 33 includes a positioning housing 3398 and a reflector 340 mounted on the positioning housing 3398, with a plurality of the reflectors arranged toward the lamp body (see [reference]). Figure 8The positioning shell 3398 and the reflector 340 are formed independently or integrally. When integrally formed, the reflective film is formed. The reflector includes at least one reflector plate constituting the upper opening and the lower opening, and the inner surface of the reflector plate constitutes a reflective surface. In this embodiment, the light-concentrating element 33 includes two first reflector plates 333 and two second reflector plates 334 that are arranged opposite to each other and constituting the upper opening 332 and the lower opening 331. The square projection screen is adapted to the upper opening. The surfaces of the first reflector plates 333 and the second reflector plates 334 are provided with reflective films or reflective sheets, thus constituting the reflective surface 335. The reflective surface 335 is an arc-shaped surface, and the inclination curvature of the arc-shaped surface gradually changes. The arc-shaped surface extends obliquely from bottom to top, that is, the reflector plate gradually moves away from the central axis of the light-concentrating element 33 from bottom to top. The inclination of the arcuate surface of the second reflector 334 is greater than or equal to the inclination of the arcuate surface of the first reflector 333, or the angle formed by the tangent of the arcuate surface of the first reflector 333 and the central axis of the focusing element 33 is greater than the angle formed by the tangent of the arcuate surface of the second reflector 334 and the central axis of the focusing element 33. The arcuate surfaces of the first reflector 333 and the second reflector 334 are connected by a chamfered arcuate surface 338. The angle formed by the tangent of the arcuate surface of the first reflector 333 and / or the second reflector 334 and the central axis of the focusing element gradually decreases. At least part of the light beam emitted by the lamp body 32 passes through the projection screen 34 and the imaging lens 36 after its optical path is changed by the reflective film, the reflector sheet, or the reflector cover 340. The light-emitting area of ​​the lamp body 32 is greater than or equal to the projection area of ​​the projection screen 34. The focusing element also includes multiple limiting blocks 336 and clearance grooves 337 arranged around the opening. The multiple limiting blocks 336 restrict the projection screen 34 from shifting horizontally, and the pressing block 317 of the housing 31 restricts the projection screen 34 from moving upward; or the projection screen 34 is fixed to the focusing element or the housing 31 by adhesive. The limiting groove 337 is located on one side of the limiting block 336, facilitating the electrical connection between the conductive wire and the projection screen 34. The lens assembly 35 includes a positioning ring 351 and an imaging lens 352. The internal thread of the positioning ring 351 engages with the external thread of the imaging lens 352 for focusing the lens assembly 35. Alternatively, the positioning ring 351 and the imaging lens 352 engage through a guide groove and a sliding post to achieve focusing. The positioning ring 351 is fixedly connected to the housing 31. The lens assembly 35 includes a positioning ring 351 and an imaging lens 352. The internal thread of the positioning ring 351 engages with the external thread of the imaging lens 352 for focusing the lens assembly 35. Alternatively, the positioning ring 351 and the imaging lens 352 can engage via a guide groove and a sliding post to achieve focusing. The positioning ring 351 is fixedly connected to the housing 31.

[0034] like Figure 5 As shown, the length of the projection screen 34 is defined as L, the distance between the projection screen 34 and the lamp body is defined as D, and the included angle α between the two first reflectors 333 is greater than or equal to the included angle β between the two first reflectors 333. In the existing structure, the closer the lamp body 32 is to the projection screen 34, the higher the light utilization rate and the worse the illumination uniformity X. However, after adding the focusing element 33 between the light source 21 and the projection screen 34, the illumination uniformity gradually becomes more uniform as the lamp body 32 gets closer to the projection screen 34. In addition, because the larger the included angle α is, the higher the lumen value of the lamp body and the higher the light utilization rate, but the more heat the lamp body generates, it is easy to cause the temperature to exceed the temperature that the projection screen can withstand, causing the projection screen to turn blue or its non-projection area to have higher light transmittance, thus affecting the projection effect. Therefore, it is necessary to determine the range of values ​​for the included angle α through research and development and multiple experiments. According to test data, an illumination uniformity X less than 3 is considered uniform, and the closer it is to 1, the more uniform it is. When α = 20°, the light utilization rate is 25%–35%, the light uniformity X = 1.05–1.35, and D = 2L–3L; when α = 30°, the light utilization rate is 35%–44%, the light uniformity X = 3.5–4.5, and D = 1.2L–2L; when α = 40°, the light utilization rate is 45%–53%, the light uniformity X = 3.2–4.3, and D = 1L–1.5L; when α = 50°, the light utilization rate is 54%–60%, the light uniformity X = 2.6–4, and D = 0.8L–1L; when α = 60°, the light utilization rate is 61%–71%, the light uniformity X = 1.5–3, and D = 0.6L–0.8L; when α = 70°, ... The light utilization rate is 66%–73%, the light uniformity is X = 1.4–2.8, and D = 0.5L–0.65L; when α = 80°, the light utilization rate is 70%–77%, the light uniformity is X = 1.2–1.6, and D = 0.43L–0.5L; when α = 90°, the light utilization rate is 80%–88%, the light uniformity is X = 1.04–1.3, and D = 0.35L–0.43L; when α = 100°, the light utilization rate is 83%–94%, the light uniformity is X = 1.1–1.5, and D = 0.29L–0.35L; when α = 110°, the light utilization rate is 88%–96%, the light uniformity is X = 2–3, and D = 0.23L–0.3L. When the included angle α between the two first reflectors 333 is between 30° and 100°, the light utilization rate is 35% to 94%, X = 1.04 to 4.5, and D = 0.27L to 2L. When the included angle α between the two oppositely arranged first reflectors 333 is between 40° and 90°, the relationship between L and D satisfies D = 0.35L to 1.5L, the light flux utilization rate of the focusing element is 45% to 88%, and the illumination uniformity X = 1.04 to 4.3. When the included angle between the two first reflectors 333α When the angle is between 40° and 100°, the relationship between L and D The system satisfies D = 0.27L to 1.5L, the luminous flux utilization rate of the focusing element is 40% to 94%, and the illumination uniformity X = 1.1 to... 4.3. When the included angle between the two first reflectors 333 α The angle is 50° to 90°. The relationship between L and D satisfies D = 0.35L~1L, the luminous flux utilization rate of the focusing element is 54%~88%, and the illumination uniformity X = 1.04~4. The projection light effect of the projection component 2 constitutes the ambient effect of the projection assembly 3. The projection assembly 3 at least forms lyrics, fonts, or pattern projections. The projection screen 34 is a black and white screen that projects lyrics onto a wall, floor, film, or tabletop. When the projection screen 34 receives lyrics information transmitted from the motherboard, it illuminates the corresponding liquid crystal to form lyrics projection. As the lyrics projection of the projection assembly 3 changes, the projection component 2 automatically or manually projects red light effects, blue light effects, green light effects, or any combination of the three colors, or a rhythmic light effect, or changes the projection pattern. A speaker installed on the base 1 receives the audio file transmitted from the motherboard and plays the sound. When a song is at a high pitch, the rotation speed of the first projection component 2 gradually increases or presents a rhythmic light effect; when a song progresses to a low pitch, the rotation speed of the projection component gradually decreases or remains constant. The lyrics projected by the projection component 3 fall onto a wall, screen, or floor. The projection light effect of the projection member 2 surrounds the lyrics or is observed through the light effect formed by the projection member 2. When the imaging device 100 is connected to a microphone, karaoke can be performed. The projection member 2 includes a central strong light effect and a weak light effect surrounding the strong light effect. The lyrics, fonts, or patterns are projected through the central optics and / or outer edge optics of the projection member 2. When the projection member 2 projects upwards, the projection component 3 projects horizontally, and the light effect projected by the projection member 3 is seen through the weak light effect formed by the projection member 2; or the projection member 2 projects horizontally, and the strong or weak light effect of the projection member 3 is arranged around the light effect of the projection member 3. Alternatively, when the projection member projects upwards, and at least part of the peripheral light falls onto the wall, the lyrics, patterns, or text presented by the projection member are seen through the peripheral light formed by the projection member; or the projection member projects horizontally.

[0035] In summary, the imaging device of this utility model has the following beneficial effects:

[0036] (1) The projection component is movably connected to the base and swings up and / or down or left and / or right with the base as the base point. The connection structure between the projection component and the base is set as a pin connection or magnetic connection or clamp connection or ball joint connection or magnetic connection or damping hinge connection or hinge connection or gear connection or universal joint connection or link rod connection. The projection component includes a lamp body, a focusing element arranged around the lamp body, a projection screen located above the focusing element, and a lens group located above the projection screen. The focusing element is arranged around the outline of the projection screen. The lamp body includes internal luminous flux and external luminous flux arranged around the internal luminous flux. At least part of the external luminous flux of the lamp body passes through the projection screen and lens group after being refracted or reflected at least once by the focusing element and is projected outward. Users can adjust the projection angle at will according to the position to be projected, without being restricted by the scene, and improve the flexibility of the product.

[0037] (2) Define the horizontal direction as the starting point for the swing of the projection component 3. The projection component rotates 0° to 90° upward and / or downward and / or rotates 0° to 90° to the left and / or right. The projection component 3 is set to fixed focus, manual focus or automatic focus. The projection position of the lyrics can be changed at any time according to the needs. The product is not limited by the projection position. Multiple focusing methods meet the product needs.

[0038] (3) The focusing element 33 includes two first reflectors 333 and two second reflectors 334 arranged around the lamp body 32. The length of the projection screen 34 is defined as L, and the distance between the projection screen 34 and the lamp body 32 is defined as D. When the included angle between the two oppositely arranged first reflectors 333 is between 40° and 90°, the relationship between L and D satisfies D = 0.35L to 1.5L. The luminous flux utilization rate of the focusing element is 45% to 88%, and the illumination uniformity X = 1.04 to 4.3. Through multiple test data, a suitable included angle and the relationship between L and D are reasonably selected to reasonably utilize the luminous utilization rate and illumination uniformity, while also meeting the operating temperature of the projection screen.

[0039] (4) The arc surface of the first reflector 333 and the arc surface of the second reflector 334 are connected by a chamfered arc surface, which makes the reflected light more focused in the center. The existing right-angle connection structure will cause the light reflected in the center to scatter. Therefore, the chamfered arc surface improves the light utilization rate.

[0040] 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. An imaging device, characterized in that, include: seat body; A projection assembly is movably connected to the base and swings upward and / or downward, or left and / or right, with the base as a base point. The connection structure between the projection assembly and the base is configured as a pin connection, magnetic connection, clamp connection, ball joint connection, magnetic connection, damping hinge connection, hinge connection, gear connection, universal joint connection, or connecting rod connection. The projection assembly includes a lamp body, a focusing element surrounding the lamp body, a projection screen located above the focusing element, and a lens assembly located above the projection screen. The focusing element is arranged around the contour of the projection screen. The lamp body includes an internal luminous flux and an external luminous flux surrounding the internal luminous flux. At least a portion of the external luminous flux of the lamp body is refracted or reflected at least once by the focusing element and then passes through the projection screen and the lens assembly before being projected outward.

2. The imaging device as claimed in claim 1, characterized in that: The horizontal direction is defined as the starting point for the swing of the projection component. The projection component rotates upward by 0° to 90° and / or downward by 0° to 90° and / or to the left or right by 0° to 90°. The projection component is set to fixed focus, manual focus, or automatic focus.

3. The imaging device as described in claim 1, characterized in that: The focusing element is arranged around the lamp body. The focusing element includes a lower opening and an upper opening arranged opposite to each other, and a plurality of reflectors constituting the upper opening and the lower opening. The reflectors gradually move away from the central axis of the focusing element from bottom to top. The reflectors are arranged towards the lamp body, and the inner surface of the reflectors is provided with a reflective surface.

4. The imaging device as described in claim 3, characterized in that: The reflective surface is configured as an arc-shaped surface, and the light-concentrating element includes two first reflectors and two second reflectors arranged opposite to each other. The inclination of the arc-shaped surface of the second reflector is greater than or equal to that of the arc-shaped surface of the first reflector.

5. The imaging device as described in claim 4, characterized in that: The angle between the tangent of the arcuate surface of the first reflector and / or the second reflector and the central axis of the light-concentrating element gradually decreases.

6. The imaging device as described in any one of claims 1-5, characterized in that: The light-concentrating element includes a plurality of limiting blocks arranged around the opening, the plurality of limiting blocks restricting the projection screen from shifting in the horizontal direction, and the pressure block of the housing of the projection assembly restricting the projection screen from moving upward; or the projection screen is fixed to the light-concentrating element or the projection screen is fixed to the housing by adhesive.

7. The imaging device as claimed in claim 1, characterized in that: The light-concentrating element includes two first reflectors and two second reflectors arranged opposite to each other. The length of the projection screen is defined as L, and the distance between the projection screen and the lamp body is defined as D. When the included angle between the two first reflectors is between 30° and 100°, the light utilization rate is 35% to 94%, X = 1.04 to 4.5, and D = 0.27L to 2L.

8. The imaging device as claimed in claim 7, characterized in that: When the included angle between the two first reflectors is between 40° and 90°, the relationship between L and D satisfies D = 0.35L to 1.5L, the luminous flux utilization rate of the focusing element is 45% to 88%, and the illumination uniformity X = 1.04 to 4.

3.

9. The imaging device as described in claim 7 or 8, characterized in that: The imaging device further includes a projection component mounted on the base. The projection component includes a light source and at least one optical element located above the light source. The optical element is configured as a projection mask, an interference sheet, a corrugated sheet, a patterned sheet, or a beam splitter. When the projection component projects upward, and at least part of the peripheral light falls onto the wall, the projection effect formed by the projection component overlaps with the horizontal projection of the peripheral light of the projection component on the wall.

10. The imaging device as claimed in claim 9, characterized in that: The projection screen is a black and white screen. When the projection screen projects lyrics, when a song is in a high note, the rotation speed of the projection component gradually increases or a rhythmic light effect is displayed. When a song progresses to a low note, the rotation speed of the projection component gradually decreases or remains constant.

Images