CN112682721A

CN112682721A - Light distribution assembly and lighting device

Info

Publication number: CN112682721A
Application number: CN202011576918.2A
Authority: CN
Inventors: 黄俊晖
Original assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Current assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-04-20

Abstract

The invention discloses a light distribution assembly and a lighting device, and belongs to the technical field of lighting. The light distribution assembly comprises a first lens and a first clamping part; the first lens is provided with a first light incident surface, a first light emitting surface and a side part positioned between the first light incident surface and the first light emitting surface; the first clamping part is arranged on the side part of the first lens. The first lens is an optical path deflection element, and an included angle is formed between the first light incident surface and the first light emergent surface; the first light incident surface is arranged on a transmission path of emergent light rays of the lighting device and used for receiving the emergent light rays; and the emergent light rays are emitted from the first light emitting surface to change the light ray transmission path of the emergent light rays. According to the light distribution assembly and the lighting device, the first lens is arranged, and the light path deflection element is arranged on the first lens, so that the light ray emergent angle can be adjusted more conveniently, better light effect is obtained, and the optical quality is improved.

Description

Light distribution assembly and lighting device

Technical Field

The invention relates to the technical field of illumination, in particular to a light distribution assembly and an illumination device.

Background

Generally, a lighting device includes a base, an exit light assembly positioned within a receiving cavity of the base. With the rapid development of LED technology in recent years, various LED lamps are developed and applied successively. The spotlight is more widely applied and developed vigorously, the requirements of various scenes are more and more thinner, and the requirements of customers cannot be met even though the spotlight is installed in a plurality of places, so that the dimmable turn-around spotlight is designed in an extending way to expand more applications.

In order to realize that the emergent light angle is adjustable, the emergent light subassembly needs to revolute the rotation of axes to realize that the emergent light subassembly can be relatively the base and accept the intracavity rotation, the general technique is just in order to change the direction of emergent light through the lamp body of mechanical structure regulation shot-light now.

Because the regulation of the relative base of present emergent light subassembly is the holistic mechanical type of emergent light subassembly and adjusts, lead to emergent light angle regulation convenient enough and the effect unsatisfactory inadequately, need adjust very big light emergent angle usually and just can realize, if when emergent light angle regulation receives the restriction, can lead to unable regulation requirement that satisfies light emergent angle to can not satisfy the actual demand of adjusting luminance. For example, the light-emitting angle of the exiting light-emitting module relative to the base can only be shifted to 30 degrees, and if the light-emitting angle is further increased, for example, the light-emitting angle is adjusted to 45 degrees, the light-emitting angle cannot be adjusted or the light-emitting angle cannot be adjusted conveniently due to the mutual interference of the installation environment or the structure of the exiting light-emitting module.

Meanwhile, the optical light emitting surface of the conventional lighting device is close to the inside, and light rays are reflected when being transmitted outwards, so that light paths are overlapped, light spots are not smooth and complete, and poor light effects such as stray light and glare exist, so that the visual quality is influenced.

Therefore, there is a need to provide a new light distribution assembly and a lighting device to effectively solve the above problems.

Disclosure of Invention

The invention provides a light distribution assembly and a lighting device, which are used for solving the technical problems that the existing lighting device cannot meet the adjustment requirement of a light reflection angle due to the limitation of a light emitting adjustment angle of an emergent light assembly relative to a base, the adjustment of the emergent light angle is not convenient enough, and the effect is not ideal.

The invention aims to provide a light distribution assembly and a lighting device, which can adjust the emergent angle of light more conveniently, obtain better light effect and improve optical quality.

The invention provides a light distribution assembly, which is used for changing a light distribution path of a lighting device and comprises a first lens and a first clamping part; the first lens is provided with a first light incident surface, a first light emitting surface and a side part positioned between the first light incident surface and the first light emitting surface; the first clamping part is arranged on the side part of the first lens; the first lens is an optical path deflection element, and an included angle is formed between the first light incident surface and the first light emergent surface; the first light incident surface is arranged on a transmission path of emergent light rays of the lighting device and used for receiving the emergent light rays; and the emergent light rays are emitted from the first light emitting surface to change the light ray transmission path of the emergent light rays.

Further, the first clamping part is an elastic part, and the first clamping part is sleeved on the inner wall of the light outlet of the lighting device to prevent the first lens from moving relative to the lighting device along the axial direction.

Further, the first clamping part is embedded in the side part of the first lens and is configured to be clamped into the inner wall of the light outlet of the lighting device.

Further, the first catches are provided in pairs at side portions of the first lens.

Further, the first chucking part is provided integrally with the first lens.

Further, the first lens is a sawtooth deflection lens, a wedge-shaped deflection lens or a curved surface deflection lens, or a deflection lens formed by combining at least two of sawtooth, wedge and curved surface.

Furthermore, the first light incident surface and the first light emergent surface are both planes, and the included angle is an acute angle.

Further, the light distribution assembly further comprises a second lens; the second lens comprises a second light incident surface, the second light incident surface and the first light emergent surface are arranged oppositely, at least one of the first lens and the second lens is a light path deflection element, and the first lens is arranged rotatably relative to the second lens so as to change a light distribution path of the light distribution assembly.

Further, the first lens and the second lens are coaxially arranged, and the first lens can rotate around the axis relative to the second lens.

Further, the first light emitting surface and the second light incident surface are arranged in parallel.

The invention also provides a lighting device, which comprises a base, an emergent light assembly and the light distribution assembly in any one of the above; the emergent light assembly is arranged in the base to provide emergent light, and the light distribution assembly is installed on the base and used for receiving the emergent light provided by the emergent light assembly so as to change the transmission direction of the emergent light.

Further, the base comprises a light outlet hole, an accommodating cavity communicated with the light outlet hole, and a bottom wall opposite to the light outlet hole; the emergent light assembly is arranged in the accommodating cavity and provides emergent light towards the light outlet; the light distribution assembly is fixed to the base and is close to the light outlet.

Further, the emergent light subassembly includes light source module, light source module includes light source board and luminescence unit, the luminescence unit set up in on the light source board and towards the light-emitting hole.

Furthermore, the emergent light assembly also comprises a third lens, the third lens is covered on the light source module, and the third lens comprises a third light incident surface and a third light emergent surface which are oppositely arranged; the third light emitting surface faces the first light incident surface of the first lens.

Furthermore, the emergent light assembly also comprises a lens mounting piece, a lens fixing piece and a light source module; the lens mounting piece is connected with the bottom wall and surrounds the light source module, and the lens mounting piece is provided with guide parts distributed along the circumferential direction and arranged towards the light outlet hole so as to limit the position of the third lens.

Furthermore, the inner wall of the lens fixing piece is provided with a first clamping part, and the side part of the first lens is provided with a first clamping part; the first clamping part is matched with the first clamping part.

Further, the first clamping part is a protrusion, and the first clamping part is a groove or an annular groove.

Further, the lighting device still includes the face ring, the face ring includes the lateral wall, the face ring is connected the base and is kept away from the diapire.

Furthermore, the lighting device also comprises a reflector, the reflector comprises a reflection body, the reflection body comprises a reflection inlet and a reflection outlet which are oppositely arranged, the reflector is contained in the surface ring, and the reflection inlet is close to the emergent light assembly.

Furthermore, the ejector also comprises a second clamping part, a second clamping part is also arranged in the surface ring, and the second clamping part is arranged on the inner side of the side ring wall and arranged along the circumferential direction; the second clamping portion is clamped in the second clamping portion.

The light distribution assembly and the illuminating device have the advantages that when the existing illuminating device is limited by the light emitting adjusting angle of the emergent light assembly relative to the base, the light distribution assembly is arranged on the transmission path of the emergent light, so that the angle of the light distribution path of the illuminating device is further changed, the adjusting requirement of the light reflection angle is met, the emergent light angle is convenient to adjust, and the effect is ideal.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a structural view of a light distribution assembly in embodiment 1 of the present invention;

fig. 2 is a structural view of a light distribution assembly in embodiment 2 of the present invention;

FIG. 3 is an exploded view of the light distribution assembly of FIG. 2;

fig. 4 is a light distribution path diagram of the light distribution assembly in embodiment 2 of the present invention, which mainly shows a situation when the first incident light surface and the second incident light surface form a first included angle;

fig. 5 is a light distribution path diagram of the light distribution assembly in embodiment 2 of the present invention, which mainly shows a situation when the first incident light surface and the second emergent light surface form a second included angle;

fig. 6 is a light distribution path diagram of the light distribution assembly in embodiment 2 of the invention, which mainly shows a situation when the first light incident surface and the second light emergent surface are parallel to each other;

FIG. 7 is a block diagram of one embodiment of the lighting device of the present invention;

FIG. 8 is an exploded view of the lighting device of FIG. 7;

FIG. 9 is a cross-sectional view of the lighting device of FIG. 7;

fig. 10 is a schematic diagram illustrating a light distribution path of a lighting device changed by a light distribution assembly according to the present invention.

The reference numbers are as follows:

100. 100 a-a light distribution assembly;

10. 10 a-a first lens; 11. 11 a-a first light incident surface; 12. 12 a-a first light-emitting surface;

13a, a first clamping part;

20-a second lens; 21-a second light incident surface; 22-a second light-emitting surface;

200-a lighting device;

210-a base; 211-light exit holes; 212-a receiving cavity; 213-a bottom wall; 214-peripheral side wall;

220-a light source module;

230-a lens mount; 231-a guide;

240-third lens; 241-a third light incident surface; 242 — a third light emitting surface;

250-a lens mount; 251-a first clamping part; 252-connecting column;

260-face ring; 261-side annular wall; 262-a snap-fit arrangement;

270-a reflector; 271-a reflective body; 272-second snap-in part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. The directional terms used in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., are used only for describing specific embodiments of the present invention with reference to the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Embodiment 1 of light distribution Assembly

As shown in fig. 1, a light distribution assembly 100a provided in embodiment 1 of the present invention for changing a light distribution path of an illumination device includes a first lens 10 a. The first lens 10a has a first light incident surface 11a and a first light emitting surface 12 a; the first lens 10a is an optical path deflecting element, and an included angle is formed between the first light incident surface 11a and the first light emitting surface 12 a; the first light incident surface 11a of the first lens 10a is disposed on a transmission path of the emergent light of the lighting device, and is used for receiving the emergent light; the first light emitting surface 11a emits the emergent light to change a light propagation path of the emergent light.

In the present embodiment, the first lens 10a is a wedge-shaped refractive lens, or may also be referred to as a wedge prism, a wedge lens, or the like. It can be understood that, since the first light incident surface 11a and the first light emitting surface 12a form an included angle, when the wedge-shaped refractive lens is disposed on a transmission path of the emergent light of a lighting device (e.g., a dimmable turn-around spotlight), the original light path is deflected by half of the required angle. For example, if the light-emitting angle of the turn-around spotlight required by the user is 30 °, since the included angle of the first lens 10a is 15 °, when downward emergent light passes through the wedge-shaped refractive lens, the emergent light deflects upward by 15 °, and at this time, the turn-around spotlight is mechanically adjusted upward by 15 ° continuously toward one side. For another example, if a user needs to obtain a direct illumination effect, after downward emergent light passes through the wedge-shaped refractive lens, the emergent light may deflect upwards by 15 °, at this time, the turning spotlight only needs to be adjusted towards the other side by 15 °, and the emergent light is converted into a direct illumination type. It can be seen that the present invention can reduce the rotation range of the turn around spot lamp by providing the first lens 10 as a wedge-shaped refractive lens. The function brought by the method is to reduce the internal space of the lamp required by mechanical turning, more conveniently place the position of the mechanical rotating shaft and reduce the interference risk among all parts of the structure; and the newly added light distribution assembly 100a is close to the outside of the optical light emitting surface of the lighting device, so that the optical light emitting surface moves outwards, the influence of a secondary anti-dazzle system on a light path can be reduced, and light spots are smooth and complete without stray light.

The first lens 10a has a side portion located between the first light incident surface 11a and the first light emitting surface 12 a; the light distribution assembly 100a further includes a first catch 13a, and the first catch 13a is disposed at a side portion of the first lens 10 a. When the first holding part 13a and the first lens 10a are made of the same material, the first holding part 13a and the first lens 10a are preferably integrally arranged during lens molding; when the first holding portion 13a and the first lens 10a are made of different materials, the first holding portion 13a is preferably an elastic member. The first holding portion 13a is configured to be capable of being snapped into an inner wall of a light outlet of the lighting device, so as to sleeve and fix the light distribution assembly 100 on the lighting device, so as to prevent the first lens 10a from moving in an axial direction relative to the light outlet of the lighting device. In some embodiments, the first catch 13a may be a C-shaped spring. In the assembling process of the light distribution assembly 100a and the lighting device, the C-shaped spring is small in arc degree after being pressed and can be completely contained in the gap between the light distribution assembly 100a and the lighting device, after the light distribution assembly 100 is sleeved with the lighting device, the pressing force on the C-shaped spring is cancelled, so that the arc degree is large after the C-shaped spring is reset, and therefore the axial positioning of the light distribution assembly 100a and the lighting device can be achieved.

The first catches 13a are provided in pairs at the side of the first lens 10a or in a half-loop type at the side of the first lens 10 a.

The first catch 13a is provided integrally with the first lens 10 a. In the present embodiment, the first catch 13a may be bonded to the first lens 10 a.

The first lens 10a is a sawtooth deflection lens, a wedge-shaped deflection lens, or a curved deflection lens, or a deflection lens formed by combining at least two of sawtooth, wedge-shaped, and curved surfaces. In the embodiment of the present invention, the first lens 10a is preferably a wedge-shaped refractive lens. Of course, as a variant, the first lens 10a may be a sawtooth deflection lens, or a curved deflection lens, or a deflection lens formed by combining at least two of sawtooth, wedge, and curved surfaces, and other lenses capable of deflecting light.

The first light incident surface 11a and the first light emitting surface 12a are both planar, and the included angle is an acute angle. For example, the angle range may be set between 1 degree and 30 degrees. Of course, the present invention does not limit the specific value of the included angle, which may be determined by the specific material of the first lens.

Embodiment 2 of light distribution Assembly

As shown in fig. 2 and 3, a light distribution assembly 100 provided in embodiment 2 of the present invention includes a first lens 10 and a second lens 20, where the first lens 10 includes a first light emitting surface 12, the second lens 20 includes a second light incident surface 21, and the second light incident surface 21 and the first light emitting surface 12 are disposed opposite to each other (i.e., disposed opposite to each other), so that an emergent light passing through the first lens 10 can enter the second lens 20 (or, according to the principle of light propagation, an emergent light passing through the second lens 20 can also enter the first lens 10), and the light can sequentially pass through the first lens 10 and the second lens 20 in the light distribution assembly 100 for light distribution. At least one of the first lens 10 and the second lens 20 is an optical path deflecting element, for example, the first lens 10 is an optical path deflecting element, and the structure thereof can be referred to embodiment 1, and a wedge-shaped refractive lens is adopted. The second lens 20 may be an optical path deflecting element (wedge-shaped refractive prism) or a non-optical path deflecting element (e.g., a cylindrical lens). The first lens 10 is rotatably disposed relative to the second lens 20, and the light distribution path of the light distribution assembly 100 can be changed by rotating the first lens 10. Therefore, the light source using the light distribution module 100 can adjust the optical path while the position of the light source is kept unchanged. That is, the light from the light source can pass through the light distribution assembly 100 to adjust the emergent light path, and thus the emergent angle of the light path can be adjusted.

The light distribution assembly 100 has an axis (see fig. 1) extending from the first lens 10 to the second lens 20, the first lens 10 is rotatably disposed relative to the second lens 20 about the axis, that is, the first lens 10 and the second lens 20 are coaxially disposed, and the first lens 10 can rotate relative to the second lens 20 about the axis. The rotational stroke of the first lens 10 may be 10 degrees to 360 degrees, and specifically, may be 30 degrees, 60 degrees, 90 degrees, 180 degrees, and the like. The rotation stroke is related to the light ray emergence angle to be adjusted and the irradiation target area range.

When the first lens 10 and the second lens 20 are coaxially disposed, the axis may be a central axis of the light distribution assembly 100. In addition, the mechanical structure for realizing relative rotation is conventional in the art, and is not described in detail herein.

Taking the rotation stroke of the first lens 10 as 360 degrees as an example, and one of the first lens 10 and the second lens 20 is an optical path deflecting element, no matter which position the first lens 10 rotates to, the emergent light passing through the light distribution assembly 100 is deflected and emitted, that is, the light distribution assembly 100 of the embodiment of the invention is an optical path deflecting assembly. At this time, if the deflection angle of the first lens 10 is large, the light irradiation locus of the light source emitted through the light distribution module 100 may be circular and may not be irradiated directly in front of the light distribution module 100. If the first lens 10 and the second lens 20 are both optical path deflecting elements, the light distribution assembly 100 does not perform optical path deflection any more in some angles.

It should be noted that the rotatable arrangement of the first lens 10 relative to the second lens 20 in embodiment 2 of the present invention means that, in practical use, the first lens 10 may be driven to rotate, and the second lens 20 may be kept still; the first lens 10 may be driven to remain still, and the second lens 20 may be rotated, specifically, the light distribution path of the light distribution assembly 100 may be changed.

In order to reduce the volume of the light distribution assembly 100 and reduce the light attenuation, the first light emitting surface 12 and the second light incident surface 21 are disposed in parallel, so that the first light emitting surface 12 and the second light incident surface 21 can be disposed in a close distance, that is, most of the light emitted from the first light emitting surface 12 can enter the second lens 20 from the second light incident surface 21. Of course, in some embodiments, the first light emitting surface 12 and the second light incident surface 21 may form an included angle.

In order to further reduce the light attenuation, the orthographic projection of the first light emitting surface 12 on the second light incident surface 21 is overlapped with the second light incident surface 21, so that all the light rays emitted from the first light emitting surface 12 can enter the second lens 20 through the second light incident surface 21. In some embodiments, due to special requirements on light deflection, the orthographic projection of the first light emitting surface 12 on the second light incident surface 21 may partially overlap or not overlap with the second light incident surface 21.

The first light emitting surface 12 and the second light incident surface 21 may be planar, so that the first lens 10 and the second lens 20 can be assembled in a short distance, and the volume of the light distribution assembly 100 is reduced. Of course, in some embodiments, the first light emitting surface 12 may be a curved surface, a sawtooth surface, a wedge surface, and the like, and the second light incident surface 21 may also be a curved surface, a sawtooth surface, a wedge surface, and the like.

The distance between the first light exiting surface 12 and the second light entering surface 21 may be 1mm to 10mm, such as 2mm, 3mm, 5mm, 8mm, and so on. In practical applications, the distance between the first light emitting surface 12 and the second light incident surface 21 should be as small as possible without affecting the assembly.

The first lens 10 further includes a first light incident surface 11 disposed opposite to the first light emitting surface 12, the second lens 20 further includes a second light emitting surface 22 disposed opposite to the second light incident surface 21, and during the rotation of the first lens 10 relative to the second lens 20, an included angle between a plane where the first light incident surface 11 is located and a plane where the second light emitting surface 22 is located changes, so as to change a light distribution path deflection angle of the light distribution assembly 100.

As shown in fig. 4, the first light emitting surface 12 and the second light emitting surface 21 are arranged in parallel, an included angle between a plane of the first light incident surface 11 and a plane of the second light emitting surface 22 is a first included angle, and the first included angle shown in fig. 4 is a maximum included angle formed by the first light incident surface 11 and the second light emitting surface 22, so that the light distribution assembly 100 forms a maximum deflection angle for the light distribution path; as shown in fig. 5, at this time, an included angle between the first light incident surface 11 and the second light emitting surface 22 is a second included angle, the second included angle is smaller than the first included angle, and a deflection angle of a light distribution path of the light distribution assembly 100 is smaller than that in fig. 4; as shown in fig. 6, when the first light incident surface 11 and the second light emergent surface 22 are parallel to each other, that is, the included angle between the two is zero, the light distribution assembly 100 does not form an angular deflection to the light distribution path, the light distribution assembly 100 is a non-deflection assembly, but the emergent light passing through the light distribution assembly 100 is entirely translated, specifically, in fig. 6, the emergent light is entirely translated upward compared with the incident light.

In order to make the light distribution assembly 100 have the function of non-deflecting emergent light during use and facilitate modular processing, the first lens 10 and the second lens 20 may be the same optical element, and the two may be symmetrically assembled to form the light distribution assembly 100. As shown in fig. 4 to 6, the first lens 10 and the second lens 20 are the same optical elements, and in fig. 4, the first light incident surface 11 and the second light emergent surface 22 may be arranged in parallel with each other in fig. 6.

The number of the deflection lenses in the light distribution assembly 100 of embodiment 2 of the present invention may be more than two, for example, three, or four, and so on, that is, in addition to the first lens 10 being a deflection lens, the light distribution assembly 100 may further include a second lens 20, and the first lens 10 and the second lens 20 are arranged oppositely, and also the adjustment of the emergent light angle can be realized under the condition that the light source module 220 is kept still.

Embodiments of the Lighting device

As shown in fig. 7 to 9, the present invention provides an illumination device 200, in the present embodiment, the illumination device 200 includes a base 210, an emergent light assembly, and a light distribution assembly 100a as in embodiment 1 or 100 as in embodiment 2, and is hereinafter collectively expressed by the light distribution assembly 100.

Specifically, the base 210 includes a light exit hole 211, a housing cavity 212 communicating with the light exit hole 211, and a bottom wall 213 disposed opposite to the light exit hole 211. The light emitting element is disposed in the receiving cavity 212 and can emit light toward the light emitting hole 211. The light distribution assembly 100 is mounted on the base 210 and close to the light exit hole 211, and is configured to receive light from the light exit assembly, and distribute light (i.e., adjust a light path) for the light exiting from the light exit assembly, so as to change a propagation direction of the light exiting. In the process of using the lighting device 200, the light distribution assembly 100 can be driven to rotate relative to the lighting device 200, so that the light distribution assembly 100 can rotate along the circumferential direction relative to the lighting device 200, the deflection direction and the deflection angle of emergent light of the lighting device 200 can be changed, and the emergent light angle of the lighting device 200 can be adjusted.

The light emitting assembly includes a light source module 220, and the light source module 220 is disposed on the light source board and faces the light emitting hole 211.

To achieve good heat dissipation, the base 210 is made of a metal material, such as aluminum. In addition, the light source plate is attached to the bottom wall 213, so that heat of the light source sub-module can be rapidly dissipated. The bottom wall 213 is provided with a wire passing hole, and a wire passes through the wire passing hole to be connected with the power supply sub-module, so that the electrical connection is realized. The outer surface of the bottom wall 213 facing away from the light source board is provided with heat dissipating fins to facilitate heat dissipation. In addition, an annular groove may be formed on the outer surface of the peripheral sidewall 214 to enhance the aesthetic appearance of the base 210.

The light emitting assembly further includes a third lens 240, the third lens 240 covers the light source module 220 and includes a third light incident surface 241 and a third light emitting surface 242 which are oppositely disposed, the third light incident surface 241 covers the light source module 220, and the third light emitting surface 242 faces the first light incident surface 31 of the first lens 10. Specifically, the third light incident surface 241 may be an inner concave surface, and therefore, the first light incident surface 31 of the first lens 10 faces the third light incident surface 241, so that the structure of the lamp may be more compact.

To accomplish the fixation of third lens 240, the exit light assembly further includes lens mount 230 and lens mount 250.

The lens mounting member 230 is coupled to the bottom wall 213 and surrounds the light source module 220 within the receiving cavity 212. The lens mount 230 includes guide portions 231 distributed along the circumferential direction, and the circumferential guide portions 231 are disposed toward the light exit hole 211 to define a position of the third lens 240 on a radial surface within the housing cavity 212. The upper guide parts 231 of the lens mount 230 have a circular ring shape and are circumferentially distributed. The lens mounting member 230 is disposed between the third lens 240 and the base 210.

The lens fixing member 250 is a part of the lighting device, and the inner wall of the lens fixing member 250 is provided with a first clamping portion 251, and the first clamping portion 13 cooperates with the first clamping portion 251 to circumferentially limit the position of the first lens 10 in the lens fixing member 250. Specifically, in order to improve the connection strength of the first lens 10 on the inner wall of the lens fixing member 250, one of the first retaining portion 13 and the first clamping portion 251 is a protrusion, and the other is a groove, so as to realize the clamping connection between the first retaining portion 13 and the first clamping portion 251. In this embodiment, it is preferable that the first holding portion 13 is a protrusion, and the first engaging portion 251 is a groove. The lens holder 250 is connected to the base 210, preferably by screwing, to fix the third lens 240.

In order to facilitate the rotation adjustment of the light distribution assembly 100 in the lighting device, the first clamping portion 251 is an annular groove, and the first clamping portion 13 can be slidably clamped in the first clamping portion 251.

In other embodiments, the first lens 10a is adhered to the light exit of the lighting device without the first clamping portion 251.

The base 210 includes a peripheral sidewall 214, the peripheral sidewall 214 surrounds the light exit hole 211 and the receiving cavity 212, and is connected to the bottom wall 213.

The lighting device 200 may further comprise a face ring 260, the face ring 260 comprising a side ring wall 261, the side ring wall 261 comprising an inner surface facing the axis, the face ring 260 being connected to the base 210 and distal to the bottom wall 213.

The lighting device 200 further comprises a reflector 270, and the reflector 270 comprises a reflective body 271 and a second clamping portion 272. The reflection body 271 includes a reflection surface and a backlight surface disposed oppositely, and a reflection inlet and a reflection outlet disposed oppositely. The reflector 270 is accommodated in the surface ring 260, and the reflection inlet is close to the light emitting module relative to the reflection outlet. The surface ring 260 further has a second holding portion 263, and the second holding portion 263 is disposed inside the side ring wall 261. The second clamping portion 263 is circumferentially disposed, and the second clamping portion 272 is clamped in the second clamping portion 263.

In order to realize the rotatable connection between the face ring 260 and the lens holder 250, clamping structures 262 are further arranged outside the side ring wall 261 of the face ring 260, and the clamping structures 262 are arranged in pairs; the lens fixing member 250 is provided with a connecting column 252 on one side facing the face ring 260, and the clamping structure 262 is clamped or screwed with the connecting column 252, so that the rotatable connection between the face ring 260 and the lens fixing member 250 can be realized.

As shown in fig. 10, fig. 10 is a schematic diagram of a lighting device 200 according to the present invention, in which a light distribution path is changed by a light distribution assembly 100. It can be understood that, because the first lens 10 is a wedge-shaped refractive prism, when the wedge-shaped refractive prism is disposed on the transmission path of the emergent light of the illumination apparatus 200, the original light path is deflected by a certain angle, for example, half of the turning angle required for deflection, and for example, assuming that the turning requirement of the illumination apparatus 200 is 30 °, the included angle of the first lens 10 is set to 15 °, and after the emergent light passes through the wedge-shaped refractive prism, the emergent light has been deflected by 15 °, and then if the included angle reaches 30 °, the illumination apparatus 200 is mechanically adjusted by 15 °. When direct downward light is needed, the lighting device 200 can be mechanically adjusted to the other side by 15 degrees, and light beams are in a direct type, so that the internal space of a lamp required by mechanical turning of the lighting device 200 is reduced, the position of the mechanical rotating shaft connecting column 252 is more conveniently placed, and interference risks among all structural parts are reduced; and the newly added light distribution assembly 100 is close to the outside of the optical light emitting surface of the lighting device 200, so that the optical light emitting surface moves outwards, the influence of the secondary anti-dazzle system on the light path can be reduced, and the light spot is smooth and complete and has no stray light.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A light distribution assembly for changing a light distribution path of a lighting device, comprising:

the first lens is provided with a first light incident surface, a first light emitting surface and a side part positioned between the first light incident surface and the first light emitting surface; and

the first clamping part is arranged on the side part of the first lens;

the first lens is an optical path deflection element, and an included angle is formed between the first light incident surface and the first light emergent surface;

the first light incident surface is arranged on a transmission path of emergent light rays of the lighting device and used for receiving the emergent light rays; and the emergent light rays are emitted from the first light emitting surface to change the light ray transmission path of the emergent light rays.

2. The light distribution assembly of claim 1, wherein the first retaining portion is an elastic member, and the first retaining portion can be embedded in an inner wall of a light outlet of the lighting device.

3. The light distribution assembly of claim 1, wherein the first clamping portion is embedded in a side portion of the first lens and configured to be clamped into an inner wall of a light outlet of the lighting device.

4. The light distribution assembly of claim 1, wherein the first catches are provided in pairs at sides of the first lens.

5. The light distribution assembly of claim 1, wherein the first catch is integrally provided with the first lens.

6. The light distribution assembly of claim 1, wherein the first lens is a sawtooth, wedge, or curved deflection lens, or a combination of at least two of sawtooth, wedge, and curved deflection lenses.

7. A light distribution assembly according to claim 1, wherein the first light incident surface and the first light emitting surface are both planar surfaces, and the included angle is an acute angle.

8. A light distribution assembly as recited in claim 1, further comprising a second lens; the second lens comprises a second light incident surface which is arranged opposite to the first light emergent surface, wherein at least one of the first lens and the second lens is a light path deflection element, and the first lens can be rotatably arranged relative to the second lens so as to change a light distribution path of the light distribution assembly; the first lens and the second lens are coaxially arranged, and the first lens can rotate around the axis relative to the second lens.

9. A light distribution assembly according to claim 8, wherein the first light exit surface and the second light entrance surface are arranged in parallel.

10. A lighting device comprising a base, an exit light assembly, and a light distribution assembly of any of claims 1-9; the emergent light assembly is arranged in the base to provide emergent light, and the light distribution assembly is installed on the base and used for receiving the emergent light provided by the emergent light assembly so as to change the transmission direction of the emergent light.

11. A lighting device as recited in claim 10, wherein said base comprises a light exit hole, a receiving cavity in communication with said light exit hole, and a bottom wall disposed opposite to said light exit hole; the emergent light assembly is arranged in the accommodating cavity and provides emergent light towards the light outlet; the light distribution assembly is fixed to the base and is close to the light outlet.

12. A lighting device as recited in claim 10, wherein said exit light assembly comprises a light source module, said light source module comprising a light source board and a light emitting unit, said light emitting unit being disposed on said light source board and facing said light exit opening.

13. The illumination device as recited in claim 12, wherein the light-exiting assembly further comprises a third lens, the third lens is covered on the light source module, and the third lens comprises a third light-entering surface and a third light-exiting surface which are oppositely arranged; the third light emitting surface faces the first light incident surface of the first lens.

14. A lighting device as recited in claim 13, wherein said exit light assembly further comprises a lens mount, and a light source module; the lens mounting piece is connected with the bottom wall and surrounds the light source module, and the lens mounting piece is provided with guide parts distributed along the circumferential direction and arranged towards the light outlet hole so as to limit the position of the third lens.

15. A lighting device as recited in claim 10, wherein a first engaging portion is provided on an inner wall of said lens holder, and a first engaging portion is provided on a side portion of said first lens; the first clamping part is matched with the first clamping part.

16. A lighting device as recited in claim 15, wherein said first retaining portion is a protrusion and said first snap-fit portion is a groove or an annular groove.

17. A lighting device as recited in claim 10, further comprising a face ring, said face ring comprising a side ring wall, said face ring being connected to said base and remote from said bottom wall.

18. A lighting device as recited in claim 17, further comprising a reflector, said reflector comprising a reflective body, said reflective body comprising a reflective inlet and a reflective outlet disposed in opposition, said reflector being received in said face ring, wherein said reflective inlet is adjacent to said exit light assembly.

19. A lighting device as recited in claim 18, wherein said reflector further comprises a second clip portion, and a second clip portion is further disposed in said face ring, said second clip portion being disposed inside said side ring wall and circumferentially; the second clamping portion is clamped in the second clamping portion.