CN113124349A

CN113124349A - Lighting device

Info

Publication number: CN113124349A
Application number: CN202110548486.2A
Authority: CN
Inventors: 王国建
Original assignee: Qingdao Yilai Intelligent Technology Co Ltd
Current assignee: Qingdao Yilai Intelligent Technology Co Ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-07-16

Abstract

The present invention provides a lighting device comprising: an integrated light source; the lens comprises a light inlet part and a light outlet part, and the integrated light source is arranged at the light inlet part; the reflector is arranged opposite to the light emergent part of the lens and is provided with a reflecting surface, and the reflecting surface is a curved surface; and a Rayleigh scattering plate arranged on the path of the light emitted by the reflector. The technical scheme of the invention can effectively solve the problem of serious light loss in the related technology.

Description

Lighting device

Technical Field

The invention relates to the technical field of illumination, in particular to an illumination device.

Background

With the social progress and the improvement of the quality of life, people pay more and more attention to the quality of life and pursue a healthy living environment. Under the circumstances, a new lamp form, namely a sky lamp, also called a blue sky lamp, and the like, begins to appear in the household lighting industry in recent years. The main characteristics of the simulated sky lamp are represented in two points of simulating sky visual effect and approximately simulating the oblique irradiation of solar rays into a room.

In order to realize the effect, the two paths of light sources can be combined, wherein one path of light source is a white light source, so that the oblique illumination effect is realized; the other light source is a color light source, sky blue is realized through color matching, and further simulation of sky visual effect is realized, and then the light emitting plate is uniformly irradiated by means of optical design.

In the related art, although a light path system combining a white light source and a blue sky effect simulator can be used for manufacturing a lamp simulating a blue sky visual effect, the structure is complex, the efficiency of an optical system is not high, a lot of light is lost in the lamp, and the size, particularly the thickness, of the whole lamp is large.

Disclosure of Invention

The present invention is directed to an illumination device to solve the problem of serious light loss in the related art.

In order to achieve the above object, the present invention provides an illumination apparatus comprising: an integrated light source; the lens comprises a light inlet part and a light outlet part, and the integrated light source is arranged at the light inlet part; the reflector is arranged opposite to the light emergent part of the lens and is provided with a reflecting surface, and the reflecting surface is a curved surface; and a Rayleigh scattering plate arranged on the path of the light emitted by the reflector.

Further, the reflecting surface comprises a first generatrix which is convexly arranged along the direction far away from the Rayleigh scattering plate.

Further, the reflecting surface comprises a first conducting wire, the first bus moves along the first conducting wire to form the reflecting surface, and the first conducting wire is arranged in a protruding mode in the direction towards the Rayleigh scattering plate.

Furthermore, the reflecting surface is of a symmetrical structure, the symmetrical surface of the reflecting surface is a plane passing through the center of the integrated light source and perpendicular to the length direction of the lens, and the first bus is located in the symmetrical surface.

Further, advance light portion including the mounting groove that extends along the length direction of lens, the mounting groove is located the relative both sides of lens with light-emitting portion, and integrated light source sets up in the mounting groove.

Further, two ends of the mounting groove along the length direction of the lens are open ends.

Further, the mounting groove includes a top wall, a first side wall and a second side wall, the first side wall and the second side wall extend along the length direction of the lens, the top wall includes a second bus bar, and the second bus bar is convexly arranged along the direction facing the integrated light source.

Further, the top wall comprises a second conducting wire, the second bus moves along the second conducting wire to form the top wall, and the second conducting wire is arranged in a protruding mode in the direction away from the integrated light source.

Further, the mounting groove comprises a top wall, a first side wall and a second side wall, the first side wall and the second side wall extend along the length direction of the lens, the first side wall is a first concave surface which is concave towards the direction far away from the integrated light source, and the second side wall is a second concave surface which is concave towards the direction far away from the integrated light source.

Further, the lens also comprises a first reflecting surface and a second reflecting surface which are positioned between the light inlet part and the light outlet part, and the first reflecting surface and the second reflecting surface extend along the length direction of the lens.

Further, the lens gradually shrinks from the light outlet part to the light inlet part, and/or the light outlet part is a rectangular surface.

Further, the number of the integrated light sources is one, and the number of the lenses is one.

By applying the technical scheme of the invention, the lighting equipment comprises an integrated light source, a lens, a reflector and a Rayleigh scattering plate. The lens comprises a light inlet part and a light outlet part, and the integrated light source is arranged at the light inlet part. The Rayleigh scattering plate can simulate the visual effect of a blue sky. The reflector is arranged opposite to the light emergent part of the lens, and light of the integrated light source is refracted by the lens and then emitted to the reflecting surface of the reflector from the light emergent part of the lens. The reflecting surface is a curved surface, and the emergent angle of the reflected light can be adjusted, so that the light is emitted to the Rayleigh scattering plate as far as possible, the light reflected to the outside of the Rayleigh scattering plate is reduced, the loss of the light is reduced, and the light utilization rate of the lighting equipment is improved. Therefore, the technical scheme of the invention can effectively solve the problem of serious light loss in the related art.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, 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 shows a perspective structural schematic view of an embodiment of a lighting device according to the invention;

FIG. 2 shows a perspective view of a first lens of the lighting device of FIG. 1;

FIG. 3 shows a perspective structural schematic view two of the lens of the lighting device of FIG. 1;

fig. 4 shows a perspective structural schematic view of a lens and an integrated light source of the lighting device of fig. 1;

fig. 5 shows a schematic perspective view of a partial structure of a lens of the lighting device of fig. 1;

FIG. 6 shows a side view of the lens of FIG. 5;

FIG. 7 shows a schematic optical path of the lens of FIG. 4;

FIG. 8 shows a schematic optical path diagram of the first and second sidewalls of the lens of FIG. 4;

FIG. 9 is a schematic diagram of the optical path when the side walls of the lens are planar;

fig. 10 shows a schematic construction of the working face of the reflector of the lighting device of fig. 1;

FIG. 11 shows a schematic optical path diagram of the working face of the reflector of FIG. 9;

FIG. 12 shows a schematic of the light path when the working surface of the reflector is planar;

fig. 13 shows a schematic light path of an illumination device according to the invention; and

fig. 14 shows a schematic view of the light path of the lighting device when the shape of the working surface of the reflector is not reasonable or the position between the components of the lighting device is not reasonable.

Wherein the figures include the following reference numerals:

10. an integrated light source; 20. a lens; 21. a light-emitting part; 22. mounting grooves; 221. a top wall; 2211. a second bus bar; 2212. a second conductive line; 222. a first side wall; 223. a second side wall; 23. a first reflective surface; 24. a second reflective surface; 30. a reflector; 31. a reflective surface; 311. a first bus bar; 312. a first conductive line; 40. a Rayleigh scattering plate; 50. a housing.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 and 4, the illumination apparatus of the present embodiment includes: integrated light source 10, lens 20, reflector 30, and rayleigh scattering plate 40. The lens 20 includes an optical inlet portion and an optical outlet portion 21, and the integrated light source 10 is disposed at the optical inlet portion. The reflector 30 is disposed opposite to the light exit portion 21 of the lens 20, and the reflector 30 has a reflecting surface 31, and the reflecting surface 31 is a curved surface. The rayleigh scattering plate 40 is disposed on the path of the light emitted from the reflector 30.

With the technical solution of the present embodiment, the illumination apparatus includes an integrated light source 10, a lens 20, a reflector 30, and a rayleigh scattering plate 40. The lens 20 includes an light incoming portion at which the integrated light source 10 is disposed, and a light outgoing portion 21. The rayleigh scattering plate 40 is able to simulate the visual effect of a blue sky. The reflector 30 is provided opposite to the light exit portion 21 of the lens 20, and light of the integrated light source 10 is refracted by the lens 20 and then emitted from the light exit portion 21 of the lens 20 to the reflection surface 31 of the reflector 30. The reflecting surface 31 is a curved surface, and the emitting angle of the reflected light can be adjusted, so that the light is emitted to the Rayleigh scattering plate 40 as far as possible, the light reflected to the outside of the Rayleigh scattering plate 40 is reduced, the loss of the light is reduced, and the light utilization rate of the lighting equipment is improved. Therefore, the technical scheme of the embodiment can effectively solve the problem of serious light loss in the related art.

The integrated light source 10 is preferably an integrated LED surface light source, and is more preferably a COB light source, and of course, may also be an integrated surface light source with other packaging manners, such as an SMD integrated surface light source. In the present embodiment, there is one and only one integrated light source 10 and one and only one lens 20. It should be noted that: the light-emitting angles of the integrated light sources 10 are uniform and emit light in the same direction. By adopting the technical scheme of the embodiment, the loss in the light transmission process is reduced, the light utilization rate is higher, the illumination intensity requirement of the lighting lamp can be met only by arranging one integrated light source 10 and one lens 20, and the condition that a plurality of light sources are arranged in the lighting equipment in the prior art, such as manufacturing tolerance, installation error and the like, so that the emergent light is not uniform is avoided.

In this embodiment, the integrated light source 10 is used to cooperate with the rayleigh scattering plate 40 to simultaneously realize the simulation and illumination functions of the blue-sky effect, so as to replace the scheme of using two light sources in the prior art, and the lighting device has the advantages of simple overall structure and high light utilization rate.

The lighting device of the present embodiment further includes a housing 50, an opening is provided on the housing 50, the rayleigh scattering plate 40 is disposed at the opening position, and the integrated light source 10, the lens 20, and the reflector 30 are all disposed in the housing 50. Specifically, the housing 50 is made of opaque material, and only the rayleigh scattering plate 40 in the lighting device is coupled with the external space. The reflector 30 may be a sheet metal structure, such as an aluminum plate. The reflector 30 may also be an injection molded part, the reflecting surface of which is coated.

As shown in fig. 1 and 10, the reflecting surface 31 has a symmetrical structure, and the symmetrical surface of the reflecting surface 31 is a plane passing through the center of the integrated light source 10 and perpendicular to the length direction of the lens 20. Where the origin of coordinates in fig. 10 is the position where the center of the integrated light source 10 is located. Preferably, the rayleigh scattering plate 40 is also a symmetrical structure, and a symmetrical plane of the rayleigh scattering plate 40 is a plane passing through the center of the integrated light source 10 and perpendicular to the length direction of the rayleigh scattering plate 40. This enables the light of the integrated light source 10 to be more uniformly emitted from the light emitting portion 21 and reflected to the rayleigh scattering plate 40 via the reflecting surface 31 in the longitudinal direction of the illumination apparatus, and further enables the light reflected by the reflecting surface 31 to be emitted as uniformly as possible into the range of the rayleigh scattering plate 40.

As shown in fig. 10, the reflecting surface 31 includes a first bus bar 311 located in the symmetrical plane, and the first bus bar 311 is disposed to protrude in a direction away from the rayleigh scattering plate 40 (in conjunction with fig. 10 and 13, the first bus bar 311 is disposed to protrude in an upper left direction in the drawing). The reflecting surface 31 includes a first conductive line 312, the first bus line 311 moves along the first conductive line 312 to form the reflecting surface 31, and the first conductive line 312 protrudes in a direction toward the rayleigh scattering plate 40 (in conjunction with fig. 10 and 13, the first conductive line 312 protrudes in a lower right direction in the drawing). The first bus 311 is the curve abc in fig. 10, and the first conductive line 312 is the curve dbe in fig. 10.

The reflector 30 is provided so as to face the light emitting portion 21 of the lens 20, and light emitted from the light emitting portion 21 may be projected onto the reflecting surface 31. The light emitting part 21 may have an angle with the horizontal plane, the reflecting surface 31 may be inclined, and the reflector 30 and the lens 20 may be arranged at a certain distance.

The first wires 312 are protruded toward the rayleigh scattering plate 40, so that light emitted along the length direction of the reflector 30 can be more diffused, and then the rayleigh scattering plate 40 can be fully covered by the light in the length direction of the lighting device. A light transmission path through which light rays are emitted along the first wire 312 (i.e., the length direction of the reflecting surface 31) is shown in fig. 11, a point O5 is a light emitting point, O5B5 is orthogonal to a tangent line at a point B5 of an arc A5B5C5, an incident light ray O5E5 is intersected with the reflecting surface at a point E5, an included angle between O5E5 and O5B5 is defined as B5O5E5, a normal line at a point E5 of the light ray is defined as E5G5, an included angle between E5G5 and O5B5 is defined as E, and an included angle between the reflected light ray E5F5 and O5B5 is defined as O5H5F5 + δ 2E after mathematical calculation.

Fig. 12 is a light transmission path diagram of light emitted along the length direction of the reflecting surface when the reflecting surface is a plane, where point O4 is a light exit point, point E4 is where incident light O4E4 intersects the plane reflecting surface, it is assumed that an included angle between O4E4 and O4B4 is equal to B4O4E4, point E4E 4 is symmetric to reflected light E4F4 about a normal line E4G4 at the incident point E4, a reverse extension line of reflected light E4F4 intersects O4B4 at point H4, point O4B4 is an orthogonal line about the reflecting plane A4B4C4, and an included angle between reflected light E4F4 and O4B4 is equal to B4F 4 equal to B4E 4 equal to δ after mathematical calculation.

To sum up, the angle O5H5F5 & lt O4H4F4 can be obtained. The diffusion angle of the light reflected by the reflecting surface 31 in this embodiment in the length direction of the reflector 30 is larger than that of a plane reflecting surface. Thus, the light can be diffused in the longitudinal direction of the reflector 30 without increasing the length of the reflector 30, and the rayleigh scattering plate 40 can be covered.

The first bus bar 311 is provided to protrude in a direction away from the rayleigh scattering plate 40. This enables the light emitted along the first bus 311 (i.e. the width direction of the reflecting surface 31) to be inwardly converged, and avoids that part of the light is emitted outwardly to be out of the width range of the rayleigh scattering plate, so that the part of the light cannot be emitted from the rayleigh scattering plate 40 and dissipated inside the lighting device.

It should be noted that the first bus bar 311 has a beam converging effect on light, so that light reflected by points a and c in fig. 10 is converged inward first, and the light continues to diverge outward after crossing at a point, if the light irradiates on the rayleigh scattering plate at this time, the size of the whole lighting device in the height direction is too large, and more energy is dissipated inside the lighting device during the light transmission process. Therefore, when the lens 20, the reflector 30 and the rayleigh scattering plate 40 are disposed, the light reflected by the point a and the point c does not intersect and the light reflected by the first bus line 311 just spreads over the rayleigh scattering plate 40, which can reduce the size of the lighting device and reduce the loss of light energy.

Fig. 13 shows an optical path diagram of the illumination device according to the embodiment, wherein the origin of coordinates is the position of the center of the integrated light source 10, and the light rays can just cover the rayleigh scattering plate 40 after being refracted by the lens 20 and reflected by the reflector 30, and only little or no light rays are emitted to the outside of the rayleigh scattering plate 40, so that the dissipation of the light rays is reduced. Fig. 14 shows a schematic light path diagram when the protrusion degree of the first bus of the working surface of the reflector is unreasonable in the direction away from the rayleigh scattering plate or the positional relationship among the lens, the reflector and the rayleigh scattering plate is unreasonable, light rays are reflected by the reflector and then cross and then irradiate onto the rayleigh scattering plate, the light rays cannot cover the rayleigh scattering plate, meanwhile, the light ray transmission path is too long, and energy dissipation is high.

In the present embodiment, the rayleigh scattering plate 40 is a rectangular plate, and therefore, a structure is adopted in which the first bus line 311 is provided to protrude in a direction away from the rayleigh scattering plate 40, and the first conductive line 312 is provided to protrude in a direction toward the rayleigh scattering plate 40. In other possible embodiments, the rayleigh scattering plate may also be square or in other shapes, and when the shape of the rayleigh scattering plate is changed, the protruding direction and protruding degree of the generatrix and the conducting wire forming the reflecting surface should be changed accordingly so that the light emitted from the reflecting surface can cover the rayleigh scattering plate and reduce the amount of light emitted to the outside of the rayleigh scattering plate, thereby improving the light utilization rate of the lighting device.

In other embodiments not shown in the figures, the reflecting surface has a symmetrical structure, and the symmetrical surface does not pass through the center of the integrated light source, and the symmetrical surface may be a plane not perpendicular to the length direction of the lens. Even the reflecting surface may be asymmetric.

In other embodiments not shown in the figures, the reflecting surface may have a plurality of first busbars with different shapes, but the projecting directions of the plurality of first busbars are the same.

As shown in fig. 2 to 5, the light inlet portion includes a mounting groove 22 extending along a length direction of the lens 20, the mounting groove 22 and the light outlet portion 21 are located at opposite sides of the lens 20, and the integrated light source 10 is disposed in the mounting groove 22. The integrated light source 10 is disposed in the mounting groove 22, so that light of the integrated light source 10 is directly emitted into the lens 20 after traveling a short path in air, and energy dissipation during the light traveling process is reduced.

As shown in fig. 2 to 6, both ends of the mounting groove 22 in the length direction of the lens 20 are open ends. I.e., the mounting groove 22 is a through groove along the length of the lens 20.

As shown in fig. 2 to 6, the mounting groove 22 includes a top wall 221, a first side wall 222, and a second side wall 223, the first side wall 222 and the second side wall 223 extending in a length direction of the lens 20, the top wall 221 including a second bus bar 2211, the second bus bar 2211 being convexly disposed in a direction toward the integrated light source 10. The top wall 221 includes a second conductive line 2212, the second bus bar 2211 is moved along the second conductive line 2212 to form the top wall 221, and the second conductive line 2212 is protrusively disposed in a direction away from the integrated light source 10.

Wherein the second wire 2212 is convexly disposed in a direction away from the integrated light source 10 such that the top of the top wall 221 is higher than the edge in the length direction of the lens 20. This makes the light entering the lens 20 from the top wall 221 exit the light exit portion 21 by being refracted by the lens 20, so that the exit angle is increased, i.e., the exit light is more dispersed. As shown in fig. 7, O1A1B1C1 is a light path along which light enters from the top wall 221 of the mounting groove 22 and then exits perpendicularly through the light exit portion 21. Since the tangent at the incident point A1 is orthogonal to the incident light ray O1A1, the path of the light ray A1B1 after the incident light ray O1A1 passes through the incident point is not changed, and is aligned with the incident light ray O1 A1. Similarly, the light emergent portion 21 and the incident light ray A1B1 are orthogonal, and the corresponding emergent light ray B1C1 keeps the light path constant and is aligned with the incident light ray A1B1, so that O1A1 is aligned with A1B1 and B1C 1. The light ray of the O1D1E1F1 enters the mounting groove 22 from a position at the edge of the top wall 221, and then obliquely exits through the light exiting portion 21. The beam angle of the incident beam is the angle between O1a1 and O1D1, and the beam angle of the emergent beam is the angle between B1C1 and E1F1, and it can be seen that the beam angle of the emergent beam is greater than that of the incident beam.

The second bus bar 2211 of the top wall 221 is convexly disposed in a direction toward the integrated light source 10, so that when light entering the lens 20 from the top wall 221 in the width direction of the lens 20 is refracted by the lens 20 to be emitted from the light emitting portion 21, the emission angle is reduced, i.e., the emitted light is made more convergent. It is avoided that the light is excessively emitted in the width direction of the lens so that part of the light falls out of the reflecting surface 31 to cause dissipation of the light.

As shown in fig. 2 to 5, the mounting groove 22 includes a top wall 221, a first side wall 222 and a second side wall 223, the first side wall 222 and the second side wall 223 extend along a length direction of the lens 20, the first side wall 222 is a first concave surface that is concave toward a direction away from the integrated light source 10, and the second side wall 223 is a second concave surface that is concave toward a direction away from the integrated light source 10.

As shown in fig. 3, the distance between the center of the second side wall 223 of the lens 20 mounting groove 22 and the xz plane is ab (where the origin of coordinates is the position where the center of the integrated light source 10 is located), and the distance between the edge of the second side wall 223 and the xz plane is cd. Wherein: ab > cd. As shown in fig. 2, the center of the first side wall 222 of the lens 20 mounting groove 22 is spaced from the xz plane by ae, and the edge of the first side wall 222 is spaced from the xz plane by cf. Wherein ae > cf.

This arrangement enables a beam angle of light incident from the first and

second sidewalls

222 and 223 to be larger in the length direction of the lens 20 (i.e., the x-axis direction in fig. 2). Therefore, the light ray is incident through the first side wall 222 and the second side wall 223 and is emitted from the light emitting part 21 of the lens 20, and then the emergent angle along the length direction of the lens 20 is larger, namely, the light ray is more dispersed. Fig. 8 shows a schematic diagram of an optical path of the first side wall 222 and the second side wall 223 of the lens 20 in the present embodiment, and fig. 9 shows a schematic diagram of an optical path when the side walls of the lens are flat. As can be seen from fig. 7 and 8, the first sidewall 222 and the second sidewall 223 of the present embodiment can make light rays more dispersed along the length direction of the lens than planar sidewalls.

As shown in fig. 2 to 6, the lens 20 further includes a first reflecting surface 23 and a second reflecting surface 24 between the light entering portion and the light exiting portion 21, and the first reflecting surface 23 and the second reflecting surface 24 extend in the longitudinal direction of the lens 20. The first reflecting surface 23 can reflect the light incident from the first sidewall 222 to the light emergent portion 21, so that the light incident from the first sidewall 222 can be emitted from the light emergent portion 21, and light loss caused by the fact that the light is directly emitted from the surface where the first reflecting surface 23 is located is avoided. The second reflecting surface 24 can reflect the light incident from the second side wall 223 to the light emergent portion 21, so that the light incident from the second side wall 223 can be emitted from the light emergent portion 21, and the light loss caused by the fact that the light is directly emitted from the surface where the second reflecting surface 24 is located is avoided.

As shown in fig. 6, the lens 20 gradually shrinks from the light exit portion 21 to the light entrance portion. This facilitates the forming of the lens 20. Meanwhile, as shown in fig. 1 and 13, the light of the integrated light source 10 is refracted by the lens 20, and then the light is distributed over the light emergent portion 21 of the lens 20, the light is emitted to the reflector 30 through the light emergent portion 21, and then is reflected to the rayleigh scattering plate 40 through the reflector 30, and is distributed over the rayleigh scattering plate 40 or the aperture of the rayleigh scattering plate 40; meanwhile, the image of the light emergent part 21 can be reflected by the reflector 30 and projected to the rayleigh scattering plate 40, an approximately circular, elliptical or approximately rectangular light spot with higher brightness compared with the surrounding area is formed on the rayleigh scattering plate 40, and the imaging light spot of the light emergent part 21 simulates the sun on a blue sky, so that the effect of the lighting device simulating the blue sky is more vivid.

As shown in fig. 6, in the present embodiment, the lens 20 has an asymmetric structure in the width direction, and is configured to match the placement positions of the lens 20, the reflector 30 and the rayleigh scattering plate 40, so that the overall size of the lighting device is small and the light loss inside the lighting device is small. In other possible embodiments not shown in the figures, the lens may also be of a symmetrical structure.

As shown in fig. 1, in the present embodiment, the light emitting portion 21 is a rectangular surface. The light exit portion 21 is shaped to match the shape of the rayleigh scattering plate 40, so as to avoid the light from being emitted to the outside of the rayleigh scattering plate 40 to cause the dissipation of the light.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An illumination device, comprising:

an integrated light source (10);

a lens (20), said lens (20) comprising an light entry portion and a light exit portion (21), said integrated light source (10) being arranged at said light entry portion;

a reflector (30) disposed opposite to the light exit portion (21) of the lens (20), the reflector (30) having a reflection surface (31), the reflection surface (31) being a curved surface;

and a Rayleigh scattering plate (40) arranged on the path of the light emitted by the reflector (30).

2. The lighting apparatus according to claim 1, wherein the reflecting surface (31) comprises first bus bars (311), the first bus bars (311) being convexly arranged in a direction away from the rayleigh scattering plate (40).

3. The lighting apparatus according to claim 2, wherein the reflecting surface (31) comprises a first conductive line (312), the first bus bar (311) forming the reflecting surface (31) moving along the first conductive line (312), the first conductive line (312) being convexly disposed in a direction toward the rayleigh scattering plate (40).

4. The lighting apparatus according to claim 2, wherein the reflecting surface (31) is a symmetrical structure, a plane of symmetry of the reflecting surface (31) is a plane passing through a center of the integrated light source (10) and perpendicular to a length direction of the lens (20), and the first bus bar (311) is located in the plane of symmetry.

5. The illumination apparatus according to claim 1, wherein the light inlet portion includes a mounting groove (22) extending in a length direction of the lens (20), the mounting groove (22) and the light outlet portion (21) are located at opposite sides of the lens (20), and the integrated light source (10) is disposed in the mounting groove (22).

6. The lighting apparatus according to claim 5, wherein both ends of the mounting groove (22) in the length direction of the lens (20) are open ends.

7. The lighting apparatus according to claim 5, wherein the mounting groove (22) comprises a top wall (221), a first side wall (222) and a second side wall (223), the first side wall (222) and the second side wall (223) extend along a length direction of the lens (20), the top wall (221) comprises a second bus bar (2211), and the second bus bar (2211) is convexly arranged along a direction toward the integrated light source (10).

8. The lighting apparatus according to claim 7, wherein the top wall (221) comprises a second conductive line (2212), the second bus bar (2211) moving along the second conductive line (2212) forming the top wall (221), the second conductive line (2212) being convexly arranged in a direction away from the integrated light source (10).

9. The lighting apparatus according to claim 5, wherein the mounting groove (22) comprises a top wall (221), a first side wall (222) and a second side wall (223), the first side wall (222) and the second side wall (223) extend along a length direction of the lens (20), the first side wall (222) is a first concave surface that is concave toward a direction away from the integrated light source (10), and the second side wall (223) is a second concave surface that is concave toward a direction away from the integrated light source (10).

10. A lighting device according to claim 1, characterized in that the lens (20) further comprises a first reflecting surface (23) and a second reflecting surface (24) between the light inlet portion and the light outlet portion (21), the first reflecting surface (23) and the second reflecting surface (24) extending in the length direction of the lens (20).

11. The illumination apparatus according to claim 1, wherein the lens (20) is gradually contracted in a direction from the light exit portion (21) to the light entrance portion, and/or wherein the light exit portion (21) is a rectangular surface.

12. A lighting device as claimed in claim 1, characterized in that the number of integrated light sources (10) is one and the number of lenses (20) is one.