CN220152549U - Lighting lamp with adjustable focal length - Google Patents

Abstract

The utility model discloses a lighting lamp with adjustable focal length, which comprises a lamp body and a focusing assembly, wherein the lamp body comprises a shell and a light source assembly, a containing cavity is formed in the shell, an opening is formed at one side of the shell, the light source assembly is arranged in the containing cavity and is provided with a light emitting path for emitting light towards one side of the opening, the focusing assembly is positioned on the light emitting path of the light source assembly, the focusing assembly comprises a first focusing lens fixedly arranged in the shell and a second focusing lens rotatably arranged on the shell and closing the opening, the focusing assembly is provided with an axial lead extending along the direction of the light emitting path, and the second focusing lens is configured to rotate around the axial lead by an angle relative to the first focusing lens so as to adjust the focal length of the lighting lamp. The adjustable focal length can adjust the focal length so as to realize adjustment of the size of the light spots, and is suitable for different lighting scenes, and the focusing assembly does not have telescopic action in the axial direction relative to the lamp body, so that the design of the lighting lamp can be flattened, the volume is smaller, and the adjustable focal length lamp can be suitable for a mounting environment with a narrow space.

Description

Lighting lamp with adjustable focal length

Technical Field

The utility model relates to the technical field of illumination, in particular to an illumination lamp with adjustable focal length.

Background

Down lamps or spot lights are typically mounted around indoor ceilings for accent lighting. For example, a spotlight in an exhibition hall generally projects light onto an article to be exhibited, so that the article to be exhibited is bright and shiny under the irradiation of the spotlight, and the aesthetic feeling is highlighted to attract guests to stay for appreciation. Such as clothing store spot lights, typically project light onto footwear and apparel within a showcase, causing customer attention and customer desire to purchase. The spotlight of bar, coffee shop, generally throw light on bar counter or cassette, can complement with other lights, play the effect of decorating and the scene atmosphere of ordering, can build comfortable atmosphere of relaxing. Under different scene applications, the beam angle of the spotlight is often different, and the beam angle of the spotlight for key illumination is generally smaller, usually about 15-30 degrees, so as to highlight the outline of the irradiated object; the spot lamp is used for supplementing light for other illumination lamps indoors, has a slightly larger beam angle, usually 45-60 degrees, and is used for illuminating indoor space. Because the beam angle of the traditional spotlight is usually fixed, the traditional spotlight cannot be focused and zoomed to change the beam angle, and has single application scene and limitation.

Most of the existing adjustable-focus lamps are long in design and deep, and are not suitable for being installed in application places with insufficient layer height and limited space. Therefore, it is an urgent technical problem to provide a focusing lamp that can not only adjust the beam angle, but also be thin to meet these limited space places.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide a lighting lamp which can adjust focal length and is suitable for flattening design.

To this end, the utility model provides an adjustable focal length lighting fixture comprising:

the lamp body comprises a shell and a light source assembly, wherein a containing cavity is formed in the shell, an opening is formed in one side of the shell, and the light source assembly is arranged in the containing cavity and is provided with a light emitting path for emitting light towards one side of the opening;

the focusing assembly is positioned on the light-emitting path of the light source assembly and comprises a first focusing lens fixedly arranged in the shell and a second focusing lens rotatably arranged on the shell and closing the opening, the focusing assembly is provided with an axial lead extending along the direction of the light-emitting path and is configured to rotate around the axial lead by an angle relative to the first focusing lens so as to adjust the focal length of the lighting lamp.

According to one embodiment of the utility model, the focus assembly includes a first focus ring removably coupled within the housing, the first focus lens removably coupled to the first focus ring.

According to one embodiment of the utility model, the first focusing ring is snap-connected within the housing.

According to one embodiment of the utility model, the first focusing lens is connected to the first focusing ring in a snap-fit manner.

According to one embodiment of the utility model, the first focusing ring is provided with a first clamping column, and the shell is internally provided with a first clamping groove matched with the first clamping column.

According to one embodiment of the utility model, a first clamping hook is arranged on the inner peripheral wall of the first focusing ring, and the first focusing lens is accommodated on the inner peripheral wall of the first focusing ring, and the outer peripheral edge of the first focusing lens is clamped with the first clamping hook.

According to one embodiment of the utility model, the focusing assembly includes a second focusing ring rotatably disposed on the housing, and the second focusing lens is detachably connected to the second focusing ring.

According to one embodiment of the utility model, the second focusing ring is provided with a limiting hook, the inner peripheral wall of the shell is provided with a limiting groove extending along the circumferential direction, and the limiting hook is in sliding fit with the limiting groove.

According to one embodiment of the utility model, a second clamping hook is arranged on the inner peripheral wall of the second focusing ring, and the second focusing lens is accommodated on the inner peripheral wall of the second focusing ring, and the outer peripheral edge of the second focusing lens is clamped with the second clamping hook.

According to one embodiment of the utility model, a plurality of circles of protrusions are arranged on the light-emitting surface of the first focusing lens from inside to outside in the radial direction, two adjacent circles of protrusions are arranged in a staggered mode, the height of the radially inner protrusion is lower than that of the radially outer protrusion, and the size of the radially inner protrusion is smaller than that of the radially outer protrusion.

According to one embodiment of the utility model, the light incident surface of the second focusing lens is provided with a plurality of circles of convex hulls from inside to outside along the radial direction, and the two adjacent circles of convex hulls are arranged in a staggered manner, the height of the radially inner convex hull is lower than that of the radially outer convex hull, and the size of the radially inner convex hull is smaller than that of the radially outer convex hull.

According to one embodiment of the utility model, the lamp body comprises a base lens arranged in the accommodating cavity and positioned on the light emitting path of the light source assembly.

According to one embodiment of the utility model, the light source assembly comprises a light source board mounted within the housing, and a light emitting element disposed on the light source board.

Compared with the prior art, the utility model has the following beneficial effects:

through setting up lamp body and focusing subassembly, the lamp body includes casing and light source subassembly, casing inner structure has the holding chamber, a side is formed with the opening, light source subassembly sets up in the holding intracavity and has the light-emitting path towards opening one side outgoing light, focusing subassembly is located light-emitting path of light source subassembly, focusing subassembly is including fixed first focusing lens that sets up in the casing and rotatable setting and closed open-ended second focusing lens on the casing, focusing subassembly has an axial lead that extends along light-emitting path direction, dispose to the relative first focusing lens of second focusing lens around axial lead rotation angle, so that adjust the focus of illumination lamps and lanterns. Compared with the existing barrel spotlight with fixed focal length, the illuminating lamp can adjust the focal length to adjust the size of a light spot, is suitable for different illuminating scenes, has no telescopic action on the axial direction of a focusing assembly relative to a lamp body in the adjusting process, can be used for flattening the design of the illuminating lamp, is smaller in size and can be suitable for an installation environment with a narrow space.

Drawings

FIG. 1 is a perspective view of a lighting fixture according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a lighting fixture according to an embodiment of the present utility model;

FIG. 3 is an exploded view of an embodiment of a light fixture of the present utility model;

FIG. 4 is an exploded view of a lamp body according to an embodiment of the present utility model;

FIG. 5 is an exploded view of a focus assembly according to an embodiment of the present utility model;

FIG. 6 is a perspective view of a base lens of an embodiment of the utility model;

FIG. 7 is a plan view of a base lens of an embodiment of the utility model;

FIG. 8 is a cross-sectional view taken along line A-A shown in FIG. 7;

FIG. 9 is a perspective view of a first focus lens in accordance with an embodiment of the present utility model;

FIG. 10 is a plan view of a first focus lens of an embodiment of the present utility model;

FIG. 11 is a cross-sectional view taken along line B-B shown in FIG. 10;

FIG. 12 is a perspective view of a second focus lens in accordance with an embodiment of the present utility model;

FIG. 13 is a plan view of a second focus lens in accordance with an embodiment of the present utility model;

FIG. 14 is a cross-sectional view taken along line C-C of FIG. 13;

wherein the reference numerals are as follows:

100. a lighting fixture;

1. a lamp body; 11. a housing; 111. a receiving chamber; 112. an opening; 113. a first clamping groove; 114. a limit groove; 12. a light source assembly; 120. a light-emitting path; 121. a light source board; 122. a light emitting element; 13. a base lens; 131. a light incident surface a; 132. a light-emitting surface b; 133. a reflection section; 14. a lens holder; 141. a limiting hole;

2. a focusing assembly; 20. an axial lead; 21. a first focusing lens; 211. a protrusion; 212. a light incident surface c; 213. a light-emitting surface d; 22. a second focusing lens; 221. convex hulls; 222. a light incident surface e; 223. a light-emitting surface f; 23. a first focusing ring; 231. a first clamping column; 232. a first hook; 24. a second focusing ring; 241. a limit clamping hook; 242. a second hook; 243. an anti-slip part; 244. anti-slip teeth; 245. an anti-skid slot.

Detailed Description

It is to be understood that, according to the technical solution of the present utility model, those skilled in the art may propose various alternative structural modes and implementation modes without changing the true spirit of the present utility model. Accordingly, the following detailed description and drawings are merely illustrative of the utility model and are not intended to be exhaustive or to limit the utility model to the precise form disclosed.

In the description of the present utility model, it should be noted that unless explicitly stated and limited otherwise, the terms center, upper, lower, top, bottom, inner, outer, circumferential, edge, radial, adjacent, axial, etc. indicate an orientation or a positional relationship based on that shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.

In the description of the present utility model, it should be noted that the terms first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated unless otherwise explicitly specified and defined. Thus, a feature defining a first or second may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, a plurality means two or more.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms mounted, connected, and connected should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two components can be mechanically connected, can be directly connected or can be indirectly connected through an intermediate medium, and can be communicated with each other. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, 2 and 3, an adjustable focal length lighting fixture 100 includes a lamp body 1 and a focusing assembly 2. It should be noted that, the lighting fixture 100 may be a down lamp or a spot lamp, and in some embodiments, the lighting fixture 100 may be any other type of lamp that needs to adjust the spot size, such as a projector, a decoration lamp, an atmosphere lamp, a stage lamp, etc., so the type of the lighting fixture 100 should not be limited to a specific type of lamp, and the structure and focusing principle of the focus-adjustable lighting fixture 100 will be specifically described below by taking the spot lamp as an example.

As shown in fig. 2 and 4, the lamp body 1 includes a housing 11 and a light source module 12, wherein the housing 11 is internally configured with a housing cavity 111, an opening 112 is formed at one side portion, and the light source module 12 is disposed in the housing cavity 111 and has a light emitting path 120 for emitting light toward the opening 112 side.

The housing 11 may be made of a plastic material, such as PP plastic, PET material, PVC material, etc., or may be made of a metal material, such as aluminum material, and the housing 11 made of an aluminum material may be integrally formed using a die casting apparatus. The case 11 made of a metal material has excellent heat dissipation performance as compared with a plastic material, and is not particularly limited.

The light source assembly 12 includes a light source plate 121 mounted in the housing 11, and a light emitting element 122 disposed on the light source plate 121. The light source board 121 may be an aluminum substrate or a PCB board, which is not particularly limited. Since the light source assembly 12 is a main heat generating device, the light source plate 121 is preferably a metal substrate in consideration of good heat dissipation of the light source assembly 12, and the light source plate 121 may be fixed in the housing 11 by screws, snaps, or adhesives, and thermally contacted with the inner bottom wall of the housing 11. The light emitting elements 122 may be solid state light emitting elements, such as LED particles, LED beads, SMD light sources, COB light sources, etc., and the number of the light emitting elements 122 is not limited to 1, but 2 or more may be designed according to actual light emitting requirements, lamp types, etc., and is not particularly limited. The light source module 12 has a light emitting path 120, as indicated by an arrow ∈in fig. 4, and in fig. 4, only the light emitting direction of the light source module 12 is schematically shown, so that only the light emitting path of one light ray is shown, and the light ray emitted from the light emitting element 122 is actually emitted in all directions without any lens or other optical element.

In order to facilitate the light emitted from the light emitting element 122 to be more concentrated and emitted toward the light emitting path 120, the lamp body 1 includes a base lens 13 disposed in the accommodating cavity 111 and located on the light emitting path 120 of the light source assembly 12. The base lens 13 may be a total internal reflection lens, such as a tir lens, or may be other optical elements, such as a reflector cup, a condenser lens, or a diffusion lens, without limitation. The base lens 13 is mounted in the housing 11 by a lens holder 14, the lens holder 14 is cup-shaped, a limiting hole 141 matching the shape of the light emitting element 122 is provided at the bottom, the lens holder 14 is fixed in the housing 11 by screws, and the base lens 13 is fixed on the light source plate 121.

As shown in fig. 6, 7 and 8, the base lens 13 has a bowl-like or horn-like shape, and has a solid structure as a whole. The base lens 13 has a light incident surface a131, which is recessed toward the inner side of the base lens 13 and forms a mouth portion adapted to the light emitting element 122 for accommodating the light emitting element 122. The reflective portion 133 is formed on the outer peripheral side of the light incident surface a, and the reflective portion 133 includes a plurality of saw-tooth structures, each of which extends along the bottom of the base lens 13 toward the outer peripheral edge of the base lens 13, so as to reflect light, and the side of the base lens 13 opposite to the light incident surface a is the light emergent surface b132. The light distribution effect of the light rays of the base lens 13 is expressed as: some of the light rays entering from the light-entering surface a are directly emitted from the light-exiting surface b, and other part of the light rays are reflected by the reflecting portion 133 and then emitted from the light-exiting surface b, so that the light rays are concentrated and emitted along the light-exiting path 20.

Referring to fig. 2, 3 and 5, the focusing assembly 2 is located on the light-emitting path 120 of the light source assembly 12, the focusing assembly 2 includes a first focusing lens 21 fixedly disposed in the housing 11 and a second focusing lens 22 rotatably disposed on the housing 11 and closing the opening 112, the focusing assembly 2 has an axis 20 extending along the direction of the light-emitting path 120, and the second focusing lens 22 is configured to rotate around the axis 20 by an angle relative to the first focusing lens 21 so as to adjust the focal length of the lighting fixture 100.

Specifically, the focus mount 2 includes a first focus ring 23, the first focus ring 23 is mounted in the housing 11, and the first focus lens 21 is mounted on the first focus ring 23. The first focusing ring 23 is snap-coupled within the housing 11. The first focusing ring 23 is provided with a first clamping post 231, and the housing 11 is provided with a first clamping groove 113 matched with the first clamping post 231. In some embodiments, the connection between the first focusing ring 23 and the housing 11 is not limited to a snap connection, but may be other connection, such as a screw connection or an adhesive connection, which is not limited in particular.

The first focus lens 21 is snap-coupled to the first focus ring 23. The inner peripheral wall of the first focusing ring 23 is provided with a first clamping hook 232, and the first focusing lens 21 is accommodated on the inner peripheral wall of the first focusing ring 23 and the outer peripheral edge of the first focusing lens is clamped with the first clamping hook 232. In some embodiments, the connection between the first focusing lens 21 and the first focusing ring 23 is not limited to clamping, but may be other connection, such as screw connection or adhesive connection, which is not limited in particular.

As shown in fig. 9, 10 and 11, the first focusing lens 21 has a light incident surface c212 and a light emergent surface d213, a plurality of circles of protrusions 211 are arranged on the light emergent surface d of the first focusing lens 21 from inside to outside in the radial direction, two adjacent circles of protrusions 211 are arranged in a staggered manner, the height of the radially inner protrusion 211 is lower than the height of the radially outer protrusion 211, and the size of the radially inner protrusion 211 is smaller than the size of the radially outer protrusion 211. By the design, light enters the first focusing lens 21 through the light incident surface c of the first focusing lens 21, is refracted for multiple times through the protrusions on the light emergent surface d of the first focusing lens 21 and then is emitted, multiple times of light mixing occurs, the emitted light is soft and not dazzling, and the light utilization rate is improved.

With continued reference to fig. 2 and 5, the focusing assembly 2 includes a second focusing ring 24, the second focusing ring 24 is rotatably disposed on the housing 11, and the second focusing lens is mounted on the second focusing ring 24.

The second focusing ring 24 is provided with a limiting hook 241, the inner peripheral wall of the housing 11 is provided with a limiting groove 114 extending along the circumferential direction, and the limiting hook 241 is in sliding fit with the limiting groove 114. The design is such that the second focus ring 24 can be rotated by an angle about the axis 20 relative to the housing 11. In order to facilitate the adjustment of the second focus ring 24 by the user, an anti-slip portion 243 is provided on the outer peripheral wall of the second focus ring 24. The anti-slip portion 243 includes anti-slip teeth 244 provided on the outer peripheral wall of the second focus ring 24 and extending up and down, and anti-slip grooves 245 formed between adjacent two of the anti-slip teeth 244. In some embodiments, the anti-slip portion 243 is not limited to the structure of the anti-slip teeth 244 and the anti-slip grooves 245 formed on the outer peripheral wall of the second focusing ring 24, but may be a rubber ring sleeved on the outer peripheral wall of the second focusing ring 24, or a handle or a knob may be provided on the second focusing ring 24, which is not particularly limited.

The second focusing ring 24 is provided with a second hook 242 on an inner peripheral wall, and the second focusing lens 22 is accommodated on the inner peripheral wall of the second focusing ring 24 and the outer edge thereof is clamped with the second hook 242. In some embodiments, the connection between the second focusing lens 22 and the second focusing ring 24 is not limited to the clamping connection, but may be other connection methods, such as a screw connection or an adhesive connection, which is not limited in particular.

As shown in fig. 12, 13 and 14, the second focusing lens 22 has a light incident surface e222 and a light emergent surface f223, a plurality of circles of convex hulls 221 are arranged on the light incident surface of the second focusing lens 22 from inside to outside along the radial direction, two adjacent circles of convex hulls 221 are arranged in a staggered manner, the height of the radially inner convex hull 221 is lower than that of the radially outer convex hull 221, and the size of the radially inner convex hull 221 is smaller than that of the radially outer convex hull 221. In such design, light enters the second focusing lens 22 through the light incident surface e of the second focusing lens 22, after being refracted for many times by the convex hull on the light incident surface e of the second focusing lens 22, light is mixed for many times, and finally the light exits from the light emergent surface f of the second focusing lens 22, so that the light emergent is soft and not dazzling, and the light utilization rate is improved.

As shown in fig. 1, fig. 2 and fig. 3, a user rotates the second focusing ring 24 to drive the second focusing lens 22 to rotate around the axis 20 relative to the first focusing lens 21, so that a plurality of convex hulls 221 on the light emergent surface f of the second focusing lens 22 and a plurality of protrusions on the light incident surface c of the first focusing lens 21 are relatively dislocated or overlapped, and therefore light rays passing through the first focusing lens 21 and the second focusing lens 21 can be partially overlapped or staggered, and finally the size of a light spot projected by the lighting lamp is changed, so that the purpose of focusing is achieved. Because the focusing component 2 does not have telescopic change relative to the lamp body 1 in the process of realizing the focusing function, the whole lighting lamp 100 can be designed to be flatter, thinner and smaller in size, and can be suitable for a mounting environment with a narrower space.

The technical scope of the present utility model is not limited to the above description, and those skilled in the art may make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present utility model, and these changes and modifications should be included in the scope of the present utility model.

Claims (13)

1. An adjustable focal length lighting fixture, comprising:

the lamp body (1) comprises a shell (11) and a light source assembly (12), wherein a containing cavity (111) is formed in the shell (11), an opening (112) is formed in one side of the shell, and the light source assembly (12) is arranged in the containing cavity (111) and is provided with a light emitting path (120) for emitting light towards one side of the opening (112);

the focusing assembly (2) is positioned on the light emitting path (120) of the light source assembly (12), the focusing assembly (2) comprises a first focusing lens (21) fixedly arranged in the shell (11) and a second focusing lens (22) rotatably arranged on the shell (11) and closing the opening (112), the focusing assembly (2) is provided with an axial lead (20) extending along the direction of the light emitting path (120), and the second focusing lens (22) is configured to rotate around the axial lead (20) by an angle relative to the first focusing lens (21) so as to adjust the focal length of the lighting lamp.

2. The adjustable focal length lighting fixture of claim 1 wherein: the focusing assembly (2) comprises a first focusing ring (23), the first focusing ring (23) is detachably connected in the shell (11), and the first focusing lens is detachably connected to the first focusing ring (23).

3. The adjustable focal length lighting fixture of claim 2 wherein: the first focusing ring (23) is connected in the shell (11) in a buckling mode.

4. A focal length adjustable lighting fixture as recited in claim 3, wherein: the first focusing lens is connected to the first focusing ring (23) in a buckling mode.

5. The adjustable focal length lighting fixture of claim 4 wherein: the first focusing ring (23) is provided with a first clamping column (231), and a first clamping groove (113) matched with the first clamping column (231) is formed in the shell (11).

6. The adjustable focal length lighting fixture of claim 5 wherein: the first focusing ring (23) is provided with a first clamping hook (232) on the inner peripheral wall, the first focusing lens (21) is accommodated on the inner peripheral wall of the first focusing ring (23), and the outer peripheral edge of the first focusing lens is clamped with the first clamping hook (232).

7. The adjustable focal length lighting fixture of any one of claims 1-6, wherein: the focusing assembly (2) comprises a second focusing ring (24), the second focusing ring (24) is rotatably arranged on the shell (11), and the second focusing lens is detachably connected to the second focusing ring (24).

8. The adjustable focal length lighting fixture of claim 7 wherein: the second focusing ring (24) is provided with a limiting clamping hook (241), the inner peripheral wall of the shell (11) is provided with a limiting groove (114) extending along the circumferential direction, and the limiting clamping hook (241) is in sliding fit with the limiting groove (114).

9. The adjustable focal length lighting fixture of claim 7 wherein: the second focusing ring (24) is provided with a second clamping hook (242) on the inner peripheral wall, the second focusing lens (22) is accommodated on the inner peripheral wall of the second focusing ring (24), and the outer peripheral edge of the second focusing lens is clamped with the second clamping hook (242).

10. The adjustable focal length lighting fixture of claim 7 wherein: a plurality of circles of bulges (211) are arranged outside the light-emitting surface of the first focusing lens (21) from inside to outside along the radial direction, and two adjacent circles of bulges (211) are arranged in a staggered way,

the radially inner protrusions (211) have a height that is lower than the height of the radially outer protrusions (211), and the radially inner protrusions (211) have a size that is smaller than the size of the radially outer protrusions (211).

11. The adjustable focal length lighting fixture of claim 7 wherein: a plurality of circles of convex hulls (221) are arranged outside the light incident surface of the second focusing lens (22) from inside to outside along the radial direction, and two adjacent circles of convex hulls (221) are arranged in a staggered way,

the radially inner convex hull (221) has a height that is less than the height of the radially outer convex hull (221), and the radially inner convex hull (221) has a size that is less than the size of the radially outer convex hull (221).

12. The adjustable focal length lighting fixture of claim 7 wherein: the lamp body (1) comprises a basic lens (13) which is arranged in the accommodating cavity (111) and is positioned on the light emitting path (120) of the light source assembly (12).

13. The adjustable focal length lighting fixture of claim 12 wherein: the light source assembly (12) comprises a light source plate (121) mounted in the housing (11), and light emitting elements (122) arranged on the light source plate (121).