Novel zoom indoor spotlight

Abstract

The novel zoom indoor spotlight comprises a shell, a light source assembly, a focusing assembly and a lens assembly, and the focusing assembly comprises a rear lens, a front lens and a focusing mechanism; the small end of the rear lens is close to the light source assembly, and the surface of the small end is provided with a light inlet hole. A shaft hole is formed in the middle of the large-end surface of the rear lens, and a plurality of first annular concave-convex surfaces in a concentric ring array are arranged on the large-end surface; a rotating shaft rotationally matched with the shaft hole is arranged in the middle of the back surface of the front lens, and a plurality of second annular concave-convex surfaces arrayed by concentric rings are arranged at the non-middle position of the back surface; a plurality of first convex parts which are distributed circumferentially are arranged on the first annular concave-convex surface, and the surface of each first convex part is an arc-shaped convex surface; a first concave part is arranged at the position, corresponding to the first convex part, of the second annular concave-convex surface, and the bottom surface of the first concave part is an arc-shaped concave surface. The utility model has the characteristics of stable and accurate focusing, sealed and durable structure, small volume, wide application range, long service life and the like.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to a novel zoom indoor spotlight. Background Technology

[0002] Traditional spotlights achieve zoom by moving the distance between the light source and the lens (such as a push-pull structure), which has the following problems:

[0003] 1. The shape of the light spot cannot be precisely controlled, and the light spot edge is blurred or the center brightness is uneven due to the displacement of the light source during zooming;

[0004] 2. It has sliding parts, which makes it easy for light to leak and for dust to enter the light path, affecting the light output effect and lifespan of the lamp;

[0005] 3. Due to its mechanical push-pull structure, the lamp body is enlarged, making it unsuitable for lighting environments with limited space.

[0006] Therefore, in order to solve the above problems, it is urgent to develop a new type of zoom indoor spotlight that adopts a dual-lens rotating zoom structure design. By changing the relative angle between the two lenses, the beam divergence angle is dynamically adjusted, thereby precisely controlling the shape of the light spot. It has the characteristics of stable and accurate focusing, sealed and durable structure, small size, etc., extending the life of the lamp and having a wider range of applications. Utility Model Content

[0007] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0008] A novel zoom indoor spotlight includes a housing, a light source assembly, a focusing assembly, and a lens assembly, characterized in that:

[0009] The light source assembly, focusing assembly, and lens assembly are sequentially arranged inside the housing along the light emission direction of the light source;

[0010] The focusing assembly includes a rear lens, a front lens, and a focusing mechanism;

[0011] The rear lens is a frustum structure. The small end of the rear lens is close to the light source assembly, and the surface of the small end is provided with a light inlet hole coaxial with the light output axis. The large end surface of the rear lens is provided with an shaft hole coaxial with the light output axis in the middle, and a first annular concave-convex surface with a plurality of concentric ring arrays is provided on the non-middle position of the large end surface.

[0012] The front lens has a rotating shaft that rotatably engages with the shaft hole at the center of its back surface, and a second annular concave-convex surface with multiple concentric ring arrays is provided at the non-center position of the back surface.

[0013] The first annular concave-convex surface and the second annular concave-convex surface are not in direct contact.

[0014] The first annular concave-convex surface is provided with a plurality of circumferentially distributed first protrusions, and the surface of the first protrusion is an arc-shaped convex surface.

[0015] A first recess is provided on the second annular concave-convex surface at a position corresponding to the first protrusion, and the bottom surface of the first recess is an arc-shaped concave surface.

[0016] The focusing mechanism is used to adjust the rotation of the front lens relative to the rear lens.

[0017] Furthermore, a second concave portion is formed on the first annular concave-convex surface between adjacent first protrusions, and the bottom surface of the second concave portion is an arc-shaped concave surface;

[0018] A second convex portion is formed on the second annular concave-convex surface between adjacent first concave portions, and the surface of the second convex portion is an arc-shaped convex surface.

[0019] Furthermore, the focusing mechanism includes a lens holder, a limiting plate, and an adjusting plate;

[0020] The rear lens is connected to the housing via a lens mounting bracket;

[0021] The limiting plate is located outside the rear lens and is arc-shaped; both ends of the limiting plate are fixedly connected to the lens fixing frame, and an arc-shaped through groove is provided in the middle.

[0022] The middle part of the adjustment plate is slidably disposed in the arc-shaped through groove by a limiting member, one end of which is a control end extending to the outside of the housing, and the other end is a connection end connected to the front lens.

[0023] Furthermore, a diffuser paper is provided between the first annular convex and concave surface and the second annular convex and concave surface.

[0024] Furthermore, the lens assembly includes a front cover and a lens element;

[0025] The front cover is connected to the outer shell, and a light-transmitting hole is provided on the front cover for connection with the lens.

[0026] The front cover and rear lens restrict the degree of freedom of the front lens to move axially.

[0027] Furthermore, a recess extending into the interior of the rotating shaft is formed in the center of the surface of the front lens.

[0028] Furthermore, the light source assembly includes an LED light source, a heat sink, a heat sink bracket, and a cooling fan;

[0029] The radiator is connected to the outer casing via a radiator bracket;

[0030] The back of the LED light source is connected to the heat sink;

[0031] The cooling fan is located at the end of the heat sink away from the LED light source, and the cooling fan is connected to the outer casing.

[0032] Furthermore, the cooling fan is a low-noise fan.

[0033] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0034] 1. This utility model adopts a dual-lens rotary zoom structure design. By setting corresponding first concave and first convex parts on the surfaces of the front lens and the rear lens respectively, the bottom surface of the first concave part is an arc-shaped concave surface and the surface of the first convex part is an arc-shaped convex surface. Under the action of the focusing mechanism, the relative angle between the two lenses is changed, and the position of the arc-shaped surface corresponding to the first concave and first convex parts is changed. This allows the beam divergence angle to be adjusted by changing the light refraction angle, which can more accurately control the shape of the light spot and make the focusing stable and precise.

[0035] 2. Compared with existing focusing structures, it reduces the problems of blurred edges or uneven brightness in the center of the light spot caused by the displacement of the light source in traditional zoom. In addition, since there are no sliding parts, it reduces the probability of dust entering the light path, extends the life of the lamp, and makes the lamp smaller in size, making it suitable for lighting environments with limited space. It has the characteristics of sealed and durable structure, small size, and long life. Attached Figure Description

[0036] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0037] Figure 2 This is a three-dimensional structural diagram of the present invention (with the outer shell hidden);

[0038] Figure 3 This is one of the exploded schematic diagrams of the zoom component in this utility model;

[0039] Figure 4 This is the second exploded view of the zoom component in this utility model;

[0040] The components include: housing 1, light source assembly 2, focusing assembly 3, lens assembly 4, diffuser paper 5, LED light source 21, heat sink 22, heat sink bracket 23, cooling fan 24, rear lens 31, front lens 32, focusing mechanism 33, front cover 41, lens 42, light inlet 311, shaft hole 312, first annular concave-convex surface 313, rotating shaft 321, second annular concave-convex surface 322, cavity 323, lens holder 331, limiting plate 332, adjusting plate 333, limiting member 334, first protrusion 313a, second concave portion 313b, first concave portion 322a, second protrusion 322b, and arc-shaped through groove 332a. Detailed Implementation

[0041] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0042] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," "up," "down," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0045] like Figure 1-4 As shown, a novel zoom indoor spotlight includes a housing 1, a light source assembly 2, a focusing assembly 3, and a lens assembly 4. The light source assembly 2, the focusing assembly 3, and the lens assembly 4 are sequentially arranged inside the housing 1 along the light emission direction of the light source.

[0046] The focusing assembly 3 includes a rear lens 31, a front lens 32, and a focusing mechanism 33;

[0047] The rear lens 31 is a frustum structure. The small end of the rear lens 31 is close to the light source assembly 2. The surface of the small end is provided with a light inlet hole 311 that is coaxial with the light output axis. The large end surface of the rear lens 31 is provided with a shaft hole 312 that is coaxial with the light output axis in the middle. Multiple concentric ring arrays of first annular concave and convex surfaces 313 are provided on the non-middle position of the large end surface.

[0048] The front lens 32 has a rotating shaft 321 that rotatably engages with the shaft hole 312 at the center of its back surface, and a second annular concave-convex surface 322 with a plurality of concentric ring arrays is provided at the non-center position of the back surface.

[0049] The first annular concave-convex surface 313 and the second annular concave-convex surface 322 are not in direct contact.

[0050] The first annular concave-convex surface 313 is provided with a plurality of circumferentially distributed first protrusions 313a, and the surface of the first protrusion 313a is an arc-shaped convex surface.

[0051] A first recess 322a is provided on the second annular concave-convex surface 322 at a position corresponding to the first protrusion 313a, and the bottom surface of the first recess 322a is an arc-shaped concave surface;

[0052] The focusing mechanism 33 is used to adjust the rotation of the front lens 32 relative to the rear lens 31.

[0053] In this embodiment, a dual-lens rotation zoom structure design is adopted. By setting corresponding first concave portions 322a and first convex portions 313a on the surfaces close to the front lens 32 and the rear lens 31, respectively, the bottom surface of the first concave portion 322a is an arc-shaped concave surface and the surface of the first convex portion 313a is an arc-shaped convex surface. Under the action of the focusing mechanism 33, the relative angle between the two lenses is changed, and the position of the arc-shaped surfaces corresponding to the first concave portion 322a and the first convex portion 313a is changed. This allows the beam divergence angle to be adjusted by changing the light refraction angle, enabling more precise control of the light spot shape and stable and accurate focusing.

[0054] In this embodiment, the adjustable range of the beam divergence angle is 20 to 46 degrees, and the light has a 20-degree narrow angle mode and a 46-degree wide angle mode. The 20-degree narrow angle mode is suitable for focusing light on people or props, while the 46-degree wide angle mode can cover a small stage area.

[0055] Furthermore, such as Figure 3 , 4 As shown, in order to increase the light refraction adjustment surface and improve the light output effect, a second concave portion 313b is formed on the first annular concave-convex surface 313 between adjacent first convex portions 313a, and the bottom surface of the second concave portion 313b is an arc-shaped concave surface.

[0056] A second convex portion 322b is formed on the second annular concave-convex surface 322 between adjacent first concave portions 322a, and the surface of the second convex portion 322b is an arc-shaped convex surface.

[0057] Furthermore, such as Figure 2 , 3 As shown in Figure 4, the focusing mechanism 33 includes a lens fixing frame 331, a limiting plate 332, and an adjusting plate 333;

[0058] The rear lens 31 is connected to the housing 1 via a lens mounting bracket 331;

[0059] The limiting plate 332 is located outside the rear lens 31 and is arc-shaped; the two ends of the limiting plate 332 are fixedly connected to the lens fixing bracket 331, and an arc-shaped through groove 332a is provided in the middle.

[0060] The middle part of the adjustment plate 333 is slidably disposed in the arc-shaped through groove 332a by the limiting member 334, one end of which is a control end extending to the outside of the housing 1, and the other end is a connection end connected to the front lens 32.

[0061] In this embodiment, by applying external force to the control end of the adjustment plate 333, the control plate can slide relative to the limiting plate 332 along the arc-shaped through groove 332a, thereby adjusting the front lens 32 to rotate relative to the rear lens 31 with the light output axis as the center, thus achieving focusing. Compared with the existing focusing structure, it reduces the problem of blurred light spot edges or uneven center brightness caused by light source displacement in traditional zoom. At the same time, since there are no sliding parts, it reduces the probability of dust entering the light path, extends the life of the lamp, and makes the lamp smaller in size, suitable for lighting environments with limited space. It has the characteristics of stable and precise focusing, sealed and durable structure, and small size.

[0062] Furthermore, such as Figure 1 , 2 As shown in Figures 3 and 4, in order to enhance the softness of the emitted light and the color mixing effect, a diffuser paper 5 is provided between the first annular concave-convex surface 313 and the second annular concave-convex surface 322.

[0063] Furthermore, such as Figure 1 , 2 As shown in Figures 3 and 4, in order to improve the stability and reliability of focusing, the lens assembly 4 includes a front cover 41 and a lens element 42.

[0064] The front cover 41 is connected to the outer shell 1, and the front cover 41 has a light-transmitting hole that is connected to the lens 42.

[0065] The front cover 41 and the rear lens 31 restrict the degree of freedom of the front lens 32 to move axially.

[0066] Furthermore, such as Figure 3 , 4 As shown, in order to improve the light output effect in the central area of ​​the lamp, a cavity 323 extending into the interior of the rotating shaft 321 is provided in the center of the surface of the front lens 32.

[0067] Furthermore, such as Figure 2 As shown, the light source assembly 2 includes an LED light source 21, a heat sink 22, a heat sink bracket 23, and a cooling fan 24;

[0068] The radiator 22 is connected to the outer casing 1 via the radiator bracket 23;

[0069] The back of the LED light source 21 is connected to the heat sink 22;

[0070] The cooling fan 24 is located at the end of the heat sink 22 away from the LED light source 21, and the cooling fan 24 is connected to the outer casing 1.

[0071] In this embodiment, in order to improve the heat dissipation effect of the LED light source 21 and extend the service life of the LED light source 21;

[0072] Furthermore, in order to improve the noise reduction effect of the lamp, the cooling fan 24 is a low-noise fan.

[0073] In this embodiment, the noise level of the low-noise fan is ≤38dB, which can meet the stability requirements of long-term high-load operation.

[0074] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model patent.

Claims

1. A novel zoom indoor spotlight, comprising a housing, a light source assembly, a focusing assembly, and a lens assembly, characterized in that: The light source assembly, focusing assembly, and lens assembly are sequentially arranged inside the housing along the light emission direction of the light source; The focusing assembly includes a rear lens, a front lens, and a focusing mechanism; The rear lens is a frustum structure. The small end of the rear lens is close to the light source assembly, and the surface of the small end is provided with a light inlet hole coaxial with the light output axis. The large end surface of the rear lens is provided with an shaft hole coaxial with the light output axis in the middle, and a first annular concave-convex surface with a plurality of concentric ring arrays is provided on the non-middle position of the large end surface. The front lens has a rotating shaft that rotatably engages with the shaft hole at the center of its back surface, and a second annular concave-convex surface with multiple concentric ring arrays is provided at the non-center position of the back surface. The first annular concave-convex surface and the second annular concave-convex surface are not in direct contact. The first annular concave-convex surface is provided with a plurality of circumferentially distributed first protrusions, and the surface of the first protrusion is an arc-shaped convex surface. A first recess is provided on the second annular concave-convex surface at a position corresponding to the first protrusion, and the bottom surface of the first recess is an arc-shaped concave surface. The focusing mechanism is used to adjust the rotation of the front lens relative to the rear lens.

2. A novel zoomable indoor spotlight according to claim 1, characterized in that, A second concave portion is formed on the first annular concave-convex surface between adjacent first protrusions, and the bottom surface of the second concave portion is an arc-shaped concave surface; A second convex portion is formed on the second annular concave-convex surface between adjacent first concave portions, and the surface of the second convex portion is an arc-shaped convex surface.

3. A novel zoomable indoor spotlight as claimed in claim 1, wherein, The focusing mechanism includes a lens holder, a limiting plate, and an adjusting plate; The rear lens is connected to the housing via a lens mounting bracket; The limiting plate is located outside the rear lens and is arc-shaped; both ends of the limiting plate are fixedly connected to the lens fixing frame, and an arc-shaped through groove is provided in the middle. The middle part of the adjustment plate is slidably disposed in the arc-shaped through groove by a limiting member, one end of which is a control end extending to the outside of the housing, and the other end is a connection end connected to the front lens.

4. A novel zoomable indoor spotlight as claimed in claim 1, wherein, A diffuser paper is disposed between the first annular convex and concave surface and the second annular convex and concave surface.

5. A novel zoomable indoor spotlight as claimed in claim 1, wherein, The lens assembly includes a front cover and a lens element; The front cover is connected to the outer shell, and a light-transmitting hole is provided on the front cover for connection with the lens. The front cover and rear lens restrict the degree of freedom of the front lens to move axially.

6. A novel zoomable indoor spotlight as claimed in claim 1, wherein, A concave cavity extending into the interior of the rotating shaft is formed in the center of the surface of the front lens.

7. A novel zoomable indoor spotlight as claimed in claim 1, wherein, The light source assembly includes an LED light source, a heat sink, a heat sink bracket, and a cooling fan; The radiator is connected to the outer casing via a radiator bracket; The back of the LED light source is connected to the heat sink; The cooling fan is located at the end of the heat sink away from the LED light source, and the cooling fan is connected to the outer casing.

8. A novel zoomable indoor spotlight according to claim 7, characterized in that, The cooling fan is a low-noise fan.

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