CN215929284U

CN215929284U - Lamp assembly

Info

Publication number: CN215929284U
Application number: CN202122254718.1U
Authority: CN
Inventors: 王国建
Original assignee: Qingdao Yilai Intelligent Technology Co Ltd
Current assignee: Qingdao Yilai Intelligent Technology Co Ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-03-01
Anticipated expiration: 2031-09-16

Abstract

The present invention provides a lamp assembly comprising: a box body; the luminous piece is arranged in the box body; the lens is arranged in the box body, is of a symmetrical structure and is provided with a central symmetrical plane A0; the light-transmitting plate is positioned on the path of the light emitted by the lens; the heat dissipation part is arranged in the box body and is in heat conduction connection with the light-emitting part; wherein, the lens includes: the lens comprises a lens body, a light inlet part, a light outlet part and a reflection part, wherein the light inlet part is arranged on a first surface of the lens body and comprises an installation concave part which is concave towards the inside of the lens body and used for accommodating a light emitting piece, the installation concave part comprises a bottom wall and a cylindrical side wall connected to the edge of the bottom wall, the light outlet part is arranged on a second surface of the lens, the second surface is parallel to the first surface, and the reflection part is arranged on the side surface of the lens body and located between the first surface and the second surface. The technical scheme of this application has solved the light path among the correlation technique effectively and has passed through the middle zone of light-passing board through lens with concentrating for the inhomogeneous problem of illuminance on the light-passing board.

Description

Lamp assembly

Technical Field

The utility model relates to the technical field of lighting, in particular to a lamp assembly.

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.

To achieve the above effect, there are two technical routes: the first technical route is that the simulation of the sky visual effect and the simulation of light oblique irradiation are realized separately, the light oblique irradiation is realized through a group of white light emitting pieces independently, the simulation of the sky visual effect is realized through color matching by means of a group of color emitting pieces, and then the transparent plate is uniformly irradiated by means of optical design. The second technical route is that a group of white light emitting parts obliquely irradiate a light-transmitting plate by means of optical design, so that the oblique emergent light of the light can be ensured while the sky blue visual effect of the light-transmitting plate is realized, and the emergent light is white light.

For the second technical route mentioned above, there are mainly several systems: the first is a reflection type light path system of a multi-luminous piece combined with a lens and a reflector; secondly, a direct type optical path system with a plurality of light-emitting components combined with lenses; and thirdly, a reflective light path system with a single light emitting element combined with a reflector.

In the related art, the direct type optical path system with multiple light emitting elements combined with lenses is adopted, although a lamp simulating the blue-day visual effect can be manufactured, the light paths of the multiple light emitting elements pass through the middle area of the light transmitting plate in a concentrated mode through the lenses, so that the illumination on the light transmitting plate is uneven, the visual experience of a user in the light path direction is poor, and the size of the whole lamp is thick.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a lamp assembly to solve the problem of uneven illumination on a transparent plate due to a light path passing through a middle area of the transparent plate through a lens in a concentrated manner in the related art.

In order to achieve the above object, the present invention provides a lamp assembly comprising: a box body; the luminous piece is arranged in the box body; the lens is arranged in the box body, is of a symmetrical structure and is provided with a central symmetrical plane A0; the light-transmitting plate is positioned on the path of the light emitted by the lens; the heat dissipation part is arranged in the box body and is in heat conduction connection with the light-emitting part; wherein, the lens includes: the lens body, light inlet portion, light outlet portion and reflection portion, light inlet portion sets up in the first surface of lens body and includes the installation concave part that caves in and hold the illuminating part to the inside of lens body, the installation concave part includes diapire and connects the tube-shape lateral wall at diapire border department, light outlet portion sets up in the second surface of lens, the second surface is on a parallel with the first surface, wherein, the diapire includes outer lane portion and the central part that is located the inside of outer lane portion, outer lane portion sets up towards the direction protrusion of light inlet portion, the central part sets up towards the direction protrusion of light outlet portion, the reflection portion sets up in the side of lens body and is located between first surface and the second surface.

Further, the box includes roof and bounding wall, and the first end and the roof of bounding wall are connected, and the second end of bounding wall forms the light-emitting window, and the central line and the roof slope of bounding wall set up, and the radiating piece includes fixed plate and the hang plate of being connected with the fixed plate, and the light-emitting component sets up on the hang plate, and the fixed plate is connected with the roof laminating.

Further, the center of the luminous element forms a central light point A1 at the opening of the mounting recess, the center part comprises a midpoint A2, and a connecting line passing through the midpoint A2 and the central light point A1 is set as a central line L0; the cylindrical side walls comprise a first side wall and a second side wall which are symmetrically arranged relative to a central symmetry plane A0, a first intersection line L14 and a second intersection line L25 are formed in the central symmetry plane A0 by the first side wall and the second side wall, a first curve L01 and a second curve L02 which are formed in the outer ring portion in the central symmetry plane A0 and located on two sides of the central portion are formed by the outer ring portion, wherein the first curve L01 intersects with the first intersection line L14 at a first intersection point B1, a connecting line of the central light point A1 and the first intersection point B1 is a first straight line L1, a first included angle is formed between the central line L0 and the first straight line L1, the second curve L02 intersects with the second intersection line L25 at a second intersection point B2, a connecting line of the central light point A1 and the second intersection point B2 is a second straight line L2, a second included angle is formed between the central line L0 and the second straight line L2, and the first included angle is larger than the second included angle.

Further, the first intersection line L14 forms a third included angle with a first vertical plane, the first vertical plane is perpendicular to the first surface, and the third included angle ranges from 2 ° to 5 °; and/or the second intersecting line L25 forms a fourth angle with a second perpendicular plane, the second perpendicular plane being perpendicular to the first surface, the fourth angle ranging between 2 ° and 5 °.

Further, the reflection part includes a first arc-shaped surface and a second arc-shaped surface symmetrically arranged with respect to the central symmetry plane a0, the first arc-shaped surface and the second arc-shaped surface form a third intersecting line L38 and a fourth intersecting line L69 on the central symmetry plane a0, and the length of the third intersecting line L38 is greater than that of the fourth intersecting line L69; the third intersecting line L38 intersects the first surface at a third intersection point B3, a tangent line drawn through the third intersection point B3 as the third intersecting line L38 is defined as a first extending line L3v, and a fifth included angle is formed between the first extending line L3v and the central line L0, and the fifth included angle is greater than or equal to 45 °.

Further, the reflection part includes a first arc-shaped surface and a second arc-shaped surface symmetrically arranged with respect to the central symmetry plane a0, the first arc-shaped surface and the second arc-shaped surface form a third intersecting line L38 and a fourth intersecting line L69 on the central symmetry plane a0, and the length of the third intersecting line L38 is greater than that of the fourth intersecting line L69; the fourth intersection line L69 intersects the first surface to form a fourth intersection point B4, a tangent line drawn through the fourth intersection point B4 as the fourth intersection line L69 is set as a second extension line L6u, and a sixth included angle is formed between the second extension line L6u and the middle line L0, and the sixth included angle is smaller than or equal to 45 °.

Further, the third intersecting line L38 and the first intersecting line L14 are located on the same side of the center line L0, and the fourth intersecting line L69 and the second intersecting line L25 are located on the same side of the center line L0.

Further, the reflection part comprises a first arc-shaped face and a second arc-shaped face which are symmetrically arranged relative to a central symmetry plane a0, the first arc-shaped face and the second arc-shaped face form a third intersection line L38 and a fourth intersection line L69 on the central symmetry plane a0, wherein the fourth intersection line L69 comprises a first intersection line segment L67 and a second intersection line segment L79 connected with the first intersection line segment L67, the first intersection line segment L67 is closer to the first surface than the second intersection line segment L79, and the length of the third intersection line L38 is greater than the length of the first intersection line segment L67.

Further, the third intersecting line L38 intersects the second surface at a fifth intersection point, the second intersecting line L79 intersects the second surface at a sixth intersection point, and the distance between the sixth intersection point and the center line L0 is smaller than the distance between the fifth intersection point and the center line L0.

Further, the outer ring portion includes a plurality of annular portions that the direction of going into light portion protrusion sets up, and a plurality of annular portions are connected gradually by the direction of tube-shape lateral wall to central part, and the central part includes the direction of going out light portion protrusion sets up a plurality of bulges, and a plurality of bulges connect gradually along the circumference of outer ring portion.

Further, the box includes roof and bounding wall, and the first end and the roof of bounding wall are connected, and the second end of bounding wall forms the light-emitting window, and the light-passing board sets up in light-emitting window department, roof and light-emitting window place plane parallel arrangement, and the central line and the roof slope of bounding wall set up, and the light-emitting component sets up the acute angle contained angle department between bounding wall and roof.

Further, a straight line which passes through the central light point A1 of the luminous element and is vertical to the ground is set as a vertical axis C1, a main ray C2 of the emergent light beam is formed when the central light point A1 of the luminous element penetrates through the box body, a seventh included angle is formed between the vertical axis C1 and the main ray C2 of the emergent light beam, and the range of the seventh included angle is 45-80 degrees.

Further, the reflection part includes a first arc surface and a second arc surface symmetrically disposed with respect to the central symmetry plane a0, the first arc surface and the second arc surface form a third intersecting line L38 and a fourth intersecting line L69 on the central symmetry plane a0, the third intersecting line L38 is closer to the top plate than the fourth intersecting line L69, and an inner side of the third intersecting line L38 faces the light-transmitting plate.

Further, the light-transmitting plate comprises a Rayleigh scattering plate or a light mixing plate or a light-emitting cover or a light-emitting panel.

Further, the lamp assembly includes a sky lamp or a grille lamp or a wall wash lamp or an on-counter lighting lamp or a kitchen and bath lamp.

By applying the technical scheme of the utility model, the lamp assembly comprises: the light-emitting device comprises a box body, a light-emitting piece, a lens, a light-transmitting plate and a heat-radiating piece. The luminous piece is arranged in the box body. The lens is arranged in the box body, has a symmetrical structure and is provided with a central symmetrical plane A0. The light-transmitting plate is positioned on the path of the light emitted by the lens. The heat dissipation part is arranged in the box body and is in heat conduction connection with the light-emitting part. Wherein, the lens includes: the lens comprises a lens body, a light inlet part, a light outlet part and a reflection part, wherein the light inlet part is arranged on the first surface of the lens body and comprises an installation concave part which is concave towards the inside of the lens body and is used for accommodating a light emitting piece, and the installation concave part comprises a bottom wall and a cylindrical side wall connected to the edge of the bottom wall. The light-emitting part is arranged on a second surface of the lens, the second surface is parallel to the first surface, the bottom wall comprises an outer ring part and a central part located inside the outer ring part, the outer ring part is arranged in a protruding mode towards the direction of the light-emitting part, and the central part is arranged in a protruding mode towards the direction of the light-emitting part. The reflecting part is arranged on the side surface of the lens body and is positioned between the first surface and the second surface. The diapire and the illuminating part cooperation of lens, the outgoing light of illuminating part redistributes when the central part that the direction protrusion set up through towards light-emitting part, make and shine the light beam on the central part and diverge, can produce an asymmetric outgoing light, this asymmetric outgoing light passes through the middle zone of light-passing board, thereby reduced the illumination value of the middle zone of light-passing board, and then be favorable to improving the degree of consistency of the illumination on the light-passing board, with make the user obtain better visual experience in the light path direction. Therefore, the technical scheme of this application has solved the light path among the correlation technique effectively and has passed through the middle zone of light-passing board through lens is concentrated for the inhomogeneous problem of illuminance on the light-passing board. The reflecting part can reflect the light rays incident from the cylindrical side wall to the light emergent part, so that the light rays incident from the cylindrical side wall can be emitted from the light emergent part, and the light loss caused by the fact that the light rays are directly emitted from the surface where the reflecting part is located is avoided. And the radiating piece can dispel the heat to the luminescent part, prevents that the high temperature of luminescent part from influencing the normal use of luminescent part.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view showing a structure in which a luminescent member in the related art irradiates a Rayleigh heat dissipating plate through a lens;

FIG. 2 is a diagram illustrating the effect of light irradiated from the light emitting member of FIG. 1 through a lens;

FIG. 3 shows a schematic perspective view of the lens of FIG. 1;

FIG. 4 shows a schematic top view of a lens of an embodiment of a luminaire assembly according to the utility model;

FIG. 5 shows a schematic top view of the lens of FIG. 4 when divided by a central symmetry plane A0;

FIG. 6 is a schematic perspective view of the lens of FIG. 4 divided by a central symmetry plane A0;

FIG. 7 shows a schematic front view of the lens of FIG. 6 divided by a central symmetry plane A0;

FIG. 8 is a simplified schematic diagram of the lens of FIG. 4 emitting light from the illuminator onto a Rayleigh heat sink;

FIG. 9 is a graph showing the effect of the lens of FIG. 8 on the light exiting the glowing member;

FIG. 10 shows a working principle diagram of beam divergence at the center portion of the lens of FIG. 4;

FIG. 11 is a schematic diagram illustrating the operation of the lens of FIG. 4 in which the first included angle is greater than the second included angle;

FIG. 12 shows a schematic diagram of the exit ray path of the reflective portion of the lens of FIG. 4;

FIG. 13 shows a schematic drawing of a first extension line and a second extension line made on the reflective portion of the lens of FIG. 4;

FIG. 14 shows a schematic diagram of the operation of the lens of FIG. 4 at a third intersection;

FIG. 15 shows a schematic view of the principle of operation at a fourth intersection line of the lens of FIG. 4;

FIG. 16 is a schematic diagram showing the operation of the seventh included angle of the lens of FIG. 4;

FIG. 17 is a simplified schematic diagram illustrating the operation of the seventh included angle of the lens of FIG. 4;

FIG. 18 shows a partial distribution of the intensity of the emergent beam at a seventh included angle of the lens of FIG. 17;

FIG. 19 shows a perspective view of the lamp assembly of FIG. 4;

FIG. 20 shows a cross-sectional schematic view of the lamp assembly of FIG. 19;

FIG. 21 shows a cross-sectional schematic view of another angle of the lamp assembly of FIG. 19;

FIG. 22 shows a perspective view of another angle of the lamp assembly of FIG. 19; and

FIG. 23 shows a perspective view of another angled partial configuration of the lamp assembly of FIG. 19.

Wherein the figures include the following reference numerals:

1. a lens; 101. a light emitting member; 10. a lens body; 11. a first surface; 12. a second surface; 20. a mounting recess; 21. a bottom wall; 211. an outer ring portion; 212. a central portion; 22. a cylindrical side wall; 221. a first side wall; 222. a second side wall; 30. a reflection section; 31. a first arc-shaped surface; 32. a second arcuate surface; 40. a box body; 41. a top plate; 42. enclosing plates; 50. an antireflection structure; 60. a light-transmitting plate; 80. a heat sink; 81. a fixing plate; 82. an inclined plate.

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 utility model, 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. 4 to 9, 22 and 23, the lamp assembly of the present embodiment includes: a case 40, a light emitting member 101, a lens 1, a light transmitting plate 60, and a heat sink 80. The luminous member 101 is installed in the case 40. The lens 1 is mounted in the housing 40, the lens 1 being of symmetrical construction and having a central plane of symmetry a 0. The light-transmitting plate 60 is located in the path of the light emitted by the lens 1. The heat sink 80 is mounted in the case and is in heat-conducting connection with the light emitting element 101. Wherein, the lens includes: the lens comprises a lens body 10, a light inlet part, a light outlet part and a reflection part 30, wherein the light inlet part is arranged on the first surface 11 of the lens body 10 and comprises a mounting concave part 20 which is concave towards the inside of the lens body 10 and is used for accommodating a luminous piece 101, and the mounting concave part 20 comprises a bottom wall 21 and a cylindrical side wall 22 connected to the edge of the bottom wall 21. The light emergent portion is disposed on the second surface 12 of the lens, the second surface 12 is parallel to the first surface 11, wherein the bottom wall 21 includes an outer ring portion 211 and a central portion 212 located inside the outer ring portion 211, the outer ring portion 211 is disposed to protrude toward the light incident portion, and the central portion 212 is disposed to protrude toward the light emergent portion. The reflection part 30 is disposed at a side of the lens body 10 between the first surface 11 and the second surface 12.

With the technical solution of the present embodiment, the bottom wall 21 includes the outer ring portion 211 and the central portion 212 located inside the outer ring portion 211, the outer ring portion 211 is disposed to protrude toward the light inlet portion, and the central portion 212 is disposed to protrude toward the light outlet portion. The emergent ray of illuminating part 101 redistributes when protruding the central part 212 that sets up through the direction towards light-emitting part, makes the light beam of shining on central part 212 diapire 21 diverge, can produce an asymmetric emergent ray, and this asymmetric emergent ray passes through the middle zone of light-emitting plate to the illumination value of the middle zone of light-emitting plate has been reduced, and then is favorable to improving the degree of consistency of the illuminance on the light-emitting plate, with make the user obtain better visual experience in the light path direction. Therefore, the technical scheme of the embodiment effectively solves the problem that the light path passes through the middle area of the light emitting plate in a concentrated manner through the lens in the related art, so that the illumination on the light emitting plate is uneven. The reflection part 30 can reflect the light incident from the cylindrical side wall 22 to the light emergent part, so that the light incident from the cylindrical side wall 22 can be emitted from the light emergent part, and the light loss caused by the fact that the light is directly emitted from the surface where the reflection part 30 is located is avoided. And the radiating piece can dispel the heat to the luminescent part, prevents that the high temperature of luminescent part from influencing the normal use of luminescent part.

The outer ring portion 211 is directly connected to the central portion 212, and the outer ring portion 211 is formed by sequentially joining a plurality of curved surfaces along the circumferential direction of the cylindrical side wall 22. Both the second surface 12 and the first surface 11 may be planar or curved. The second surface 12 is parallel to the first surface 11, which means that the angle between the second surface 12 and the first surface 11 is in the range of 0 to 5 degrees.

In an embodiment not shown in the drawings, the outer ring portion 211 includes a plurality of annular portions protruding toward the light inlet portion, the plurality of annular portions are sequentially connected in a direction from the cylindrical sidewall 22 to the central portion 212, the central portion 212 includes a plurality of protruding portions protruding toward the light outlet portion, and the plurality of protruding portions are sequentially connected in a circumferential direction of the outer ring portion 211. The emergent light rays are redistributed for a plurality of times when passing through the plurality of annular parts and the plurality of convex parts which are convexly arranged towards the light emergent part, so that the light beams irradiated on the bottom wall 21 of the central part 212 are effectively diffused, an asymmetric and irregular emergent light ray can be generated, and the asymmetric and irregular emergent light ray passes through the middle area of the light-transmitting plate, thereby effectively reducing the illumination value of the middle area of the light-transmitting plate. It should be noted that the annular portion may be circular or elliptical or wavy or polygonal.

To further illustrate the effect of redistributing the emergent light of the light-emitting member 101 when passing through the central portion 212, the present application provides a comparative illustration of the effect of the light-emitting member irradiating on the rayleigh heat dissipation plate through the lens 1 in the related art.

Specifically, referring to fig. 1 to 3, the lens 1 in the related art includes a mounting recess recessed to the inside of the lens body and accommodating the light emitting member, the mounting recess having an arc-shaped concave surface convexly provided toward the light emitting member, and when the light emitting member passes through a center position of the arc-shaped concave surface, a light beam in the vicinity of the center position of the arc-shaped concave surface is condensed (see fig. 2). In the present application, referring to fig. 8 and 9, when the outgoing light of the light emitting member 101 passes through the central portion 212, the light beam of the central portion 212 diverges (see fig. 9). Thus, the central portion 212 protruding toward the light-emitting portion of the present embodiment can promote the light beam of the central portion 212 to diverge, thereby reducing the illuminance value of the middle area of the light-transmitting plate, which is beneficial to promoting the uniformity on the light-transmitting plate.

It should be noted that the effect of the condensation of the light beams in fig. 1 and 2 is the result of actual simulation. The light beam divergence effect in fig. 8 and 9 is an actual simulation result.

As shown in fig. 5 to 7 and 10, the center of the luminous member 101 forms a center spot a1 at the opening of the mounting recess 20. The central portion 212 includes a midpoint a2, and a line connecting the midpoint a2 and the central spot a1 is defined as a centerline L0. The cylindrical side wall 22 includes a first side wall 221 and a second side wall 222 symmetrically disposed with respect to a central symmetry plane a0, the first side wall 221 and the second side wall 222 forming a first intersection line L14 and a second intersection line L25 within the central symmetry plane a 0. The outer ring portion 211 forms a first curve L01 and a second curve L02 on both sides of the center portion 212 in the central symmetry plane a 0. The central portion 212 forms a third curve L03 connected to the first curve L01 and a fourth curve L04 connected to the second curve L02 within the central symmetry plane a 0.

To specifically analyze the working principle of the light beam divergence of the central portion 212 when the emergent light of the light emitting element 101 passes through the central portion 212, the third curve L03 and the first curve L01 are taken as examples. As shown in fig. 5 and 10, the detailed analysis is as follows:

the incident light at the point of the central light point A1 is A1A2 and the emergent light is A2 e.

The tangent at point L01 of the first curve is aA2b and the normal at midpoint a2 is cA2 d.

Therefore, the incident angle of the incident light ray A1A2 at the midpoint A2 is ^ A1A2d, and the emergent angle of the emergent light ray A2e is ^ cA2 e.

Assuming that the refractive index of the material of the lens 1 is Rf, Rf x sin < cA2e ═ sin < A1A2d is determined according to Snell's law.

The refractive index Rf of the material (such as plastic or glass) used for the lens is constant more than 1. Therefore, by simple calculation: the angle cA2e & lt A1A2d, namely the emergence angle is smaller than the incidence angle. Accordingly, the outgoing light ray A2e is offset from the A2z axis of the incoming light ray A1 A2. I.e., the beam at the midpoint a2 near the first curve L01 diverges.

Similar reasoning as above can lead to: the outgoing light ray at the midpoint A2 near the second curve L02 deviates from the axis A2z of the incident light ray, and the outgoing light ray passing through the first curve L01 and the outgoing light ray passing through the second curve L02 are distributed on both sides of the axis A2z, i.e., the light beam at the central portion 212 diverges.

As shown in fig. 5 to 7 and 10, in the present embodiment, the first curve L01 intersects the first intersection line L14 at the first intersection point B1, and a connection line between the central light point a1 and the first intersection point B1 is a first straight line L1. The center line L0 forms a first angle with the first straight line L1. The second curve L02 intersects the second intersection line L25 at a second intersection point B2, and a connection line between the central light point a1 and the second intersection point B2 is a second straight line L2. A second included angle is formed between the central line L0 and the second straight line L2, and the first included angle is larger than the second included angle. Thus, the length of the light-transmitting plate covered by the emergent light corresponding to the first curve L01 and the third curve L03 (the length of the line segment pq) is greater than the length of the light-transmitting plate covered by the emergent light corresponding to the second curve L02 and the fourth curve L04 (the length of the line segment mp), so that more light energy is generated in the far-end direction of the light-transmitting plate, which is beneficial to increasing the illumination intensity, and the illumination intensity of the light-transmitting plate in the length direction becomes uniform. The distal end of the transparent plate refers to an end of the transparent plate away from the light emitting element 101.

The inventors have found that since the size of the lens 1 is much smaller than the distance between the lens 1 and the light-transmitting plate in practical applications, the lens can be approximately reduced to a light-emitting member 101 during the analysis. The specific analysis of the technical effect that the first included angle is larger than the second included angle is as follows:

as shown in fig. 11, point a1 is the central light point of the light emitting element 101, point mpq is the position of the light-transmitting plate, where m is the proximal end of the light-transmitting plate, and q is the distal end of the light-transmitting plate. A1np is the direction of the optical axis of the light emitting device 101, the light between the optical axes A1np and A1sq corresponds to the first curve L01 and the third curve L03 in fig. 7, and the light between the optical axes A1np and A1m corresponds to the second curve L02 and the fourth curve L04 in fig. 7. Assume that ═ qA1p ═ pA1m ═ α, i.e., first assume here that the first included angle is equal to the second included angle.

Assuming that ═ A1qp is θ, pq is sp/sin (θ) in Δ spq and sp is A1p × sin (α) in Δ A1sp, so pq is A1p × sin (α)/sin (θ).

In Δ mnp mp ═ mn/sin (, npm), for Δ A1pq, angle npm ═ pA1q +/angle pqA1 ═ α + θ.

So mp is mn/sin (α + θ).

In Δ mA1n mn ═ A1m × sin (α).

Therefore, mp is A1m × sin (α)/sin (α + θ).

Therefore, pq/mp is (A1p/A1m) × (sin (α + θ)/sin (θ)).

Simple reasoning can lead to A1p > A1m, so A1p/A1m > 1.

It is also clear that sin (α + θ)/sin (θ) > 1.

Therefore, pq/mp > 1, i.e., pq > mp.

That is, when ═ qA1p ═ mA1p ═ α, the length of the light-transmitting plate covered by the outgoing light rays corresponding to ═ qA1p (the length of the line segment pq) is greater than the length of the light-transmitting plate covered by the outgoing light rays corresponding to ≦ mA1p (the length of the line segment mp). That is, the length of the transparent plate covered by the light beams emitted from the first curve L01 and the third curve L03 of the lens 1 shown in fig. 7 is longer than the length of the transparent plate covered by the light beams emitted from the second curve L02 and the fourth curve L04 of the lens 1 shown in fig. 7.

As shown in FIG. 10, if the first angle is equal to the second angle, the corresponding light transmission plate length pq is equal to the light energy from the light transmission plate length mp. And pq is larger than mp, so that the illumination on the length pq of the light-transmitting plate is smaller than that on the length mp of the light-transmitting plate. However, in the embodiment, as shown in fig. 7, since the first included angle is larger than the second included angle, the emitted light can increase the illumination intensity on the length pq of the light-transmitting plate shown in fig. 10, so that more light energy is provided in the distal direction of the light-transmitting plate, which is beneficial to improving the uniformity of the illumination intensity on the whole light-transmitting plate mpq.

As shown in fig. 7, in order to facilitate the demolding and the easy forming, a third included angle is formed between the first intersecting line L14 and a first vertical plane, the first vertical plane is perpendicular to the first surface 11, and the third included angle ranges from 2 ° to 5 °. The third angle is preferably 2 ° or 3 ° or 4 ° or 5 °.

As shown in fig. 7, in order to facilitate demolding and easy forming, a fourth included angle is formed between the second intersecting line L25 and a second vertical plane, the second vertical plane is perpendicular to the first surface 11, and the fourth included angle ranges from 2 ° to 5 °. The fourth angle is preferably 2 ° or 3 ° or 4 ° or 5 °.

Of course, in an embodiment not shown in the figures, the first intersection line L14 forms a third angle with the first perpendicular plane, which is perpendicular to the first surface, which may range between 2 ° and 5 °. Or the second intersecting line L25 forms a fourth angle with a second perpendicular to the first surface, which may range between 2 ° and 5 °.

As shown in fig. 5 to 7, the reflection portion 30 includes a first arc-shaped face 31 and a second arc-shaped face 32 that are symmetrically disposed with respect to a central symmetry plane a 0. The first arc-shaped face 31 and the second arc-shaped face 32 form a third intersecting line L38 and a fourth intersecting line L69 on the central symmetry plane a 0. The first and second

curved surfaces

31 and 32 together form a total reflection surface of the lens 1. The total reflection surface is a common concept in the field of illumination optics, and the content of the total reflection surface is not explained in the application.

Referring to fig. 11, it can be known from the technical effect that the first included angle is larger than the second included angle, the light energy in the direction q of the far end of the light-transmitting plate is increased, which is beneficial to improving the uniformity of the illumination on the whole light-transmitting plate mpq.

As shown in fig. 12, the emergent light beams at the third intersecting line L38 and the fourth intersecting line L69 of the total reflection surface of the lens 1 are both projected to the vicinity of the far end q close to the transparent plate mq (i.e., mpq in fig. 11), so that the light energy in the far end q direction of the transparent plate mq can be increased to increase the illuminance of the far end q of the transparent plate mq, thereby being beneficial to improving the uniformity of the illuminance of the whole transparent plate mq.

The inventors found that, in order to achieve the object that the outgoing light rays at the third intersection line L38 and the fourth intersection line L69 of the total reflection surface of the lens are both projected near the distal end q of the light-transmitting plate mq, the two third intersection lines L38 and the fourth intersection line L69 of the lens have the following characteristics:

as shown in fig. 13, the length of the third intersecting line L38 is greater than the length of the fourth intersecting line L69. The third intersecting line L38 intersects the first surface 11 at a third intersection point B3, and a tangent line drawn as the third intersecting line L38 through the third intersection point B3 is defined as a first extending line L3 v. The fourth intersection line L69 intersects the first surface 11 at a fourth intersection point B4, and a tangent line drawn through the fourth intersection point B4 as the fourth intersection line L69 is defined as a second extension line L6 u. The first extending line L3v forms a fifth included angle with the central line L0, and the fifth included angle is greater than or equal to 45 °. The fifth angle is preferably 45 °, or 51 °, or 56 °, or 60 °. The second extension line L6u forms a sixth angle with the center line L0, and the sixth angle is less than or equal to 45 °. The sixth angle is preferably 45 °, 42 °, 36 ° or 30 °. The point value of the fifth included angle and the point value of the sixth included angle can realize that the emergent light rays at the third intersecting line L38 and the fourth intersecting line L69 of the total reflection surface of the lens are projected to the position close to the far end q of the light-transmitting plate mq, so that the emergent light rays can better cover the light-transmitting plate mq.

Specifically, the working principle of the outgoing light at the third intersecting line L38 on the total reflection surface is analyzed as follows:

as shown in fig. 13 and 14, in order to increase the illuminance of the distal end q of the transparent plate mq, it is necessary to increase the projection of the lens exit light to the distal end q of the transparent plate mq. It is agreed that the length of the light-transmitting plate mq (i.e. the length of the line mq) is much larger than the size of the lens in practical use. The light emitting element 101 can be simplified to a central spot a 1. For the total reflection surface at the third intersecting line L38, fig. 14 shows that the outgoing light ray B3h at the point B3 does not intersect with the central line L0, which helps to make the outgoing light ray cast toward the far end q of the transparent plate mq, thereby improving the uniformity of the illumination intensity across the transparent plate mq. As can be seen from fig. 14, angle A1B3h is an obtuse angle, i.e. angle A1B3h is greater than 90 °. The specific numerical value of the angle A1B3h is calculated as follows:

as shown in FIG. 14, hq is the path of the outgoing light ray B3h from point B3 after being refracted by the second surface 12, and the included angle between hq and the central line L0 is about δ₂。

As shown in FIG. 14, B3h is the path of the external light hq corresponding to the inside of the lens, and the included angle between the line B3h and the center line L0 is defined as delta₁. As shown in FIG. 14, sin (δ) is given by Fresnel's law of refraction₁)＝sin(δ₂) Rf, as previously made, is a normal number greater than 1 for the refractive index of the material of the lens.

As in fig. 9, angle A1B3h is equal to angle A1B3w +. angle wB3 h. Here, convention B3w is parallel to the centerline L0 so that ═ A1B3w is 90 °. And ═ wB3h ═ δ₁So that < A1B3h is 90 DEG + delta₁。

Assuming that the line segment A1B3k is an angular bisector of ≈ A1B3h, A1B3 is an incident light at a starting point 8 of the third intersecting line L38, B3h is an emergent light at a B3 point, and A1B3 is symmetrical to B3h with respect to B3k so that B3k is also a normal line at the B3 point. From the foregoing, line segment B3v is a tangent to point B3, and line segment B3k is a normal to point B3, such that line segment B3v is perpendicular to line segment B3 k. Namely:

angle vB3A1+ angle A1B3k is 90 °. So that the angle vB3A1 is 90 ° -angle A1B3 k.

Segment 3k is an angle bisector of ═ A1B3h, and ═ A1B3k is 0.5 × (90 ° + δ ×) 0.5 × (A1B 3 h)₁)。

So that the angle vB3A1 is 90 degrees-the angle A1B3k is 90 degrees-0.5 times (90 degrees + delta)₁)＝0.5×(90°-δ₁)。

Line A1B3 is within first surface 11, so line A1B3 is perpendicular to centerline L0, as previously described. Therefore, angle vA1B3 is 90 °. According to the triangle the sum of the three internal angles is equal to 180 deg., so in avb 3a1,

∠A1vB3+∠vB3A1＝90°。

so that the angle A1vB3 is 90 degrees-angle vB3A1 is 90-0.5 x (90-delta)₁)＝0.5×(90°+δ₁)＞0.5×90°＝45°。

Specifically, the working principle of the outgoing light at the fourth intersecting line L69 of total reflection is analyzed as follows:

in order to increase the illumination of the distal end q of the transparent plate mq, the projection of the light exiting from the lens to the distal end q of the transparent plate mq needs to be increased. It is agreed that the length of the light-transmitting plate mq (i.e. the length of the line mq) is much larger than the size of the lens in practical use. The light emitting element 101 can be simplified to a central spot a 1. For the total reflection surface at the fourth intersection line L69, fig. 15 shows that the outgoing light ray B4j at the point B4 intersects the central line L0, which helps to cause the outgoing light ray to be projected toward the far end q of the light-transmitting plate mq, thereby improving the uniformity of the illuminance across the light-transmitting plate mq. As can be seen from fig. 15, angle A1B4j is an acute angle, i.e. angle A1B4j < 90 °. The specific numerical value of the angle A1B4j is calculated as follows:

as shown in fig. 15, jr is the path of the outgoing light ray B4j at point B4, which is refracted by the second surface 12 of the lens, and the included angle between jr and the central line L0 is about γ₂。

As shown in fig. 15, B4j is a light path corresponding to the emergent light path jr in the lens, and it is assumed that B4x is parallel to the centerline L0, so the included angle between B4j and the centerline L0 is equivalent to the included angle between B4j and B4x, i.e., < jB4 x.The sum is defined as ═ jB4x ═ gamma₁. As shown in FIG. 15, sin (γ) is given by Fresnel's law of refraction₁)＝sin(γ₂) Rf, as previously made, is a normal number greater than 1 for the refractive index of the material of the lens.

As shown in fig. 15, angle A1B4j is equal to angle A1B4 x-angle jB4 x. And B4x is parallel to the median line L0 so that ≈ A1B4x is 90 °. And < jB4x ═ gamma₁So that < A1B4j is 90-gamma₁。

Assuming that segment B4i is the bisector of angle A1B4j, A1B4 is the incident ray at point B4, B4j is the outgoing ray at point B4, A1B4 is symmetric about B4i with B4j, so that B4i is also the normal at point B4. From the foregoing, line segment B4u is a tangent to point B4, and line segment B4i is a normal to point B4, such that line segment B4u is perpendicular to line segment B4 i. Namely:

angle uB4A1 +. angle A1B4i is 90 °. So that the angle uB4A1 is 90 degrees-angle A1B4i

Segment B4i is an angle bisector of angle A1B4j, and angle A1B4i is 0.5 × (90-gamma) A1B4j is 0.5 × (90-gamma)₁)。

So that the angle uB4A1 is 90 degrees-the angle A1B4i is 90-0.5 x (90-gamma)₁)＝0.5×(90°+γ₁)。

Line B4A1 is within first surface 11, so line B4A1 is perpendicular to centerline L0, as previously described. Therefore, angle uA1B4 is 90 °. According to the triangle the sum of the three internal angles is equal to 180 deg., so in Δ uB4a1,

∠A1uB4+∠uB4A1＝90°。

so that the angle A1uB4 is 90 degrees-angle uB4A1 is 90 degrees-0.5 times (90 degrees + gamma)₁)＝0.5×(90°-γ₁)＜0.5×90°＝45°。

As shown in fig. 5, 7 and 13, the reflection part 30 includes a first arc-shaped face 31 and a second arc-shaped face 32 symmetrically disposed with respect to a central symmetry plane a0, and the first arc-shaped face 31 and the second arc-shaped face 32 form a third intersection line L38 and a fourth intersection line L69 on the central symmetry plane a 0. The fourth intersection line L69 includes a first intersection line segment L67 and a second intersection line segment L79 connected to the first intersection line segment L67, and the first intersection line segment L67 is closer to the first surface 11 than the second intersection line segment L79. The length of the third intersection line L38 is greater than the length of the first intersection line segment L67. For ease of design and demolding, the second intersection L79 is parallel to the centerline L0.

Of course, in the embodiment not shown in the drawings, the second line segment L79 is oblique to the center line L0.

As shown in fig. 13 to 15, in order to make the lens achieve decentered light dispersion and make the light obliquely incident on the proximal end and the light obliquely incident on the distal end of the light-transmitting plate as uniform as possible, a third intersection line L38 intersects the second surface 12 at a fifth intersection point 8 (i.e., the above-mentioned starting point 8), a second intersection line L79 intersects the second surface 12 at a sixth intersection point 9, and the distance between the sixth intersection point 9 and the central line L0 is smaller than the distance between the fifth intersection point and the central line L0.

As shown in fig. 13 to 15, in order to facilitate the third intersecting line L38 and the first intersecting line L14 to be located on the same side of the center line L0, the four intersecting lines L69 and the second intersecting line L25 are located on the same side of the center line L0. Therefore, more light energy is arranged in the direction of the far end of the light-transmitting plate, the illumination is increased, and the illumination of the light-transmitting plate in the length direction is uniform.

As shown in fig. 16 to 21, the lamp assembly includes a light emitting member 101 and a lens 1, and the lens is the above-mentioned lens. The lens can solve the problem that the light path passes through the middle area of the light-transmitting plate in a concentrated mode through the lens in the related art, so that the illumination on the light-transmitting plate is uneven, and the lamp assembly comprising the lens can solve the same technical problem. It should be noted that the lamp assembly of the present embodiment is a sky light, and the transparent plate is a rayleigh scattering plate. Of course, in embodiments not shown in the figures, the light fixture assembly may also be a grille light or a wall wash light or an on-counter or kitchen and toilet light. The light-transmitting plate can also be a light mixing plate or a light emitting cover or a light emitting panel.

As shown in fig. 16 to 21, the lamp assembly further includes a box 40 and a light-transmitting plate 60, the light-emitting element 101 and the lens 1 are both installed in the box 40, the box 40 includes a top plate 41 and a surrounding plate 42, a first end of the surrounding plate 42 is connected to the top plate 41, a second end of the surrounding plate 42 forms a light outlet, the light-transmitting plate 60 is disposed at the light outlet, the top plate 41 and the light outlet are disposed in parallel, a center line of the surrounding plate 42 and the top plate 41 are disposed in an inclined manner, and the light-emitting element 101 is disposed at an acute angle between the surrounding plate 42 and the top plate 41. The light-emitting member 101 can obliquely emit light, so that the thickness of the box body is reduced as much as possible on the premise of ensuring the optical path of the light irradiating the light-transmitting plate.

As shown in fig. 16 to 21, the lamp assembly further includes a housing 40. The light emitting member 101 and the lens 1 are installed in the case 40. A straight line passing through the central spot a1 of the light emitting element 101 and perpendicular to the ground is set as the vertical axis C1, and the central spot a1 of the light emitting element 101 is set to form the outgoing beam chief ray C2 (shown in fig. 18) when passing through the case 40. The vertical axis C1 forms a seventh angle theta with the chief ray C2 of the outgoing light beam, the seventh angle theta being in the range of 45 DEG to 80 deg. The seventh included angle θ in the range of 45 ° to 80 ° allows the light emitting member 101 to be reasonably installed in the box 40, so that the length of the vertical axis C1 becomes shorter and shorter, the thickness of the box 40 becomes thinner and thinner, and the processing cost of the lamp assembly is reduced. The seventh angle theta is preferably in the range of 45 deg. to 60 deg., and the seventh angle theta is preferably 45 deg. or 60 deg. or 72 deg. or 80 deg..

Note that, the outgoing beam chief ray described above means: the direction of the maximum light intensity value in the emergent light beams of the light emitting element and the lens is the direction of the principal ray of the emergent light beams. The reason why the direction of the maximum light intensity value is adopted to define the principal ray direction of the light beam is that the light projection capability of the emergent light beam in the maximum light intensity direction is strongest, and the principal ray direction can be used for representing the projection direction of the emergent light beam of the light-emitting element and the lens. The maximum intensity value may be measured by a photometric distributor.

The inventor finds that the position of the light emitting element 101 in the box 40 is different, and the light path irradiated by the light emitting element is also different, so that the irradiation range covered on the light transmitting plate is also different, and the specific analysis is as follows: in fig. 16, W1 is the front wall side, W2 is the rear wall side, W3 is the ground side, and W4 is the ceiling side.

When θ increases, the entire outgoing ray moves to the front wall side in fig. 16, and the proportion of the corresponding outgoing ray falling on the ground side in fig. 16 decreases. Therefore, theta has a preferable upper limit value theta_max. Preferably, θ_max≤80°。

As also shown in fig. 17, assume that the A1p direction is the direction in which the chief ray of the exiting beam is. Angle fA1p is θ. A1m and A1q are the directions in which the boundary rays of the outgoing beam are located. Angle mA1p ═ α, and angle pA1q ═ β. Wherein, both alpha and beta are normal numbers with constant values. In Δ fA1m, fm is A1f × tan (, fA1m) ═ A1f × tan (, fA1p- < mA1p) ═ A1f × tan (θ - α). In Δ fA1q, fq ═ A1f × tan (═ fA1q) ═ A1f × tan (× fA1p +. pA1q) ═ A1f × tan (θ + β).

Therefore, the irradiation range that the light-emitting member and the lens can cover the outgoing light beam, that is, the irradiation range of the light-transmitting plate that the light-emitting member and the lens can cover the outgoing light beam: mq-fq-fm A1f × (tan (θ + β) -tan (θ - α)).

mq performs a mathematical derivation operation on θ:

d(mq)/dθ＝A1f×((1/cos²(θ+β))-(1/cos²(θ-α)))

for this application again, the convention considers only the following application scenarios:

0°＜θ-α＜90°，

0°＜θ+β＜90°。

it is also apparent that θ - α < θ + β, so: theta-alpha is more than 0 degree and more than theta + beta is less than 90 degrees.

So cos (. theta. -alpha) > cos (. theta. + beta.), so (1/cos²(θ-α))＜(1/cos²(θ+β)。

Therefore ((1/cos)²(θ+β))-(1/cos²(θ-α)))＞0。

Therefore, d (mq)/d theta is more than 0, namely, when theta is increased, mq is also increased correspondingly, namely, the larger theta value is beneficial to increasing the irradiation range of the light-emitting element and the light beam emitted by the lens to the light-transmitting plate. It should be noted that, in the practical application of the present application, the irradiation range mq of the transparent plate is relatively determined, and the larger θ is, the smaller the corresponding A1f is. And A1f corresponds to the thickness of the case 40. That is, a large value of θ is advantageous for reducing the thickness of the case 40. Therefore, the value of theta has a preferable lower limit value of theta_min. Preferably, θ_min≥45°。

As shown in fig. 8, 9 and 13, the reflection part 30 includes a first arc surface 31 and a second arc surface 32 symmetrically disposed with respect to a central symmetry plane a0, the first arc surface 31 and the second arc surface 32 form a third intersection line L38 and a fourth intersection line L69 on the central symmetry plane a0, the third intersection line L38 is closer to the top plate 41 than the fourth intersection line L69, and an inner side of the third intersection line L38 faces the light-transmitting plate 60. In this way, it is possible to ensure that the reflection unit 30 where the third intersecting line L38 is located can perform total reflection efficiently.

The inventors have found that since the light emitting element 101 needs to hit the light at the edge of the rayleigh scattering plate to achieve uniform light emission from the rayleigh scattering plate, a significant dark light area is avoided. However, when light is emitted to the edge of the rayleigh scattering plate, part of the light inevitably irradiates the edge of the inner surface of the box body adjacent to the rayleigh scattering plate, and a large amount of stray light is generated to enter the rayleigh scattering plate, so that harmful reflected light is generated in the box body, and the light emitting effect of the lamp assembly is influenced.

In order to solve the above problem, as shown in fig. 8, 20 to 22, the lamp assembly of the present embodiment further includes an antireflection structure 50 disposed in the box 40, and the antireflection structure 50 is located on one side of the path of the light emitted from the lens 1. The anti-reflection structure 50 is used for absorbing stray light in incident light, and reducing the reflection of the stray light to the light-transmitting plate. And further, harmful stray light or harmful reflection light generated in the box body 40 can be greatly reduced, and the light emitting effect of the lamp assembly is effectively ensured. Specifically, the box 40 includes a top plate 41 and a surrounding plate 42 connected to the periphery of the top plate 41, and the antireflection structure 50 is disposed on the top plate 41 of the surrounding plate 42, but may also be disposed on the surrounding plate 42.

As shown in fig. 20 and 21, the lamp assembly further includes a housing 40, the light emitting element 101 and the lens 1 are mounted in the housing 40, the housing 40 includes a surrounding plate 42 and a top plate 41 connected to one end of the surrounding plate 42, a center line of the surrounding plate 42 is disposed obliquely to the top plate 41, and the antireflection structure 50 is disposed on a light receiving area of an inner wall of the surrounding plate 42. The light receiving region is a region in which a part of light emitted from the light emitting element can be directly emitted to the inner wall of the shroud. Of course, the anti-reflective structure 50 may be disposed in other areas of the inner wall of the enclosure than the above-described areas. But may of course also be provided on the inner wall of the top plate.

Moreover, the antireflection structure 50 is disposed on the light receiving area of the inner wall of the surrounding plate 42, so that harmful reflection can be eliminated, the appearance of the box body does not need to be enlarged for avoiding to eliminate the harmful reflection, and the requirements of miniaturization and modularization of the lamp assembly for mass production are met.

Specifically, as shown in fig. 20, the enclosing plate 42 includes a first side plate, a second side plate, a third side plate and a fourth side plate which are connected in sequence, the first side plate, the second side plate, the third side plate and the fourth side plate are all connected with the top plate 41, the first side plate and the third side plate are arranged in parallel and are both in a parallelogram structure, the second side plate and the fourth side plate are arranged in parallel, and a distance between the light-emitting member 101 and the second side plate is smaller than a distance between the light-emitting member 101 and the fourth side plate. The shape of first curb plate and third curb plate is the parallelogram, and second curb plate and fourth curb plate are the rectangle for the vertical cross-section of bounding wall 42 is the parallelogram like this, can increase the optical distance between illuminating part 101 and the light-emitting window effectively like this, and simultaneously, the aforesaid shape is convenient for subsequent assembly. The anti-reflection structure 50 is disposed on the fourth side plate. Thus, the light emitted from the fourth side plate corresponds to the light emitted from the light emitting element 101, so that the antireflection structure 50 on the fourth side plate can directly absorb part of the light, and stray light is reduced from being reflected to the first side plate, the second side plate or the third side plate.

As shown in fig. 20 and 21, the lamp assembly further includes a housing 40 and a light-transmitting plate 60, wherein the light-emitting member 101 and the lens 1 are both installed in the housing 40, the light-transmitting plate 60 is disposed in the housing 40, and the light-transmitting plate 60 is located on the path of the light emitted from the lens 1. The light-transmitting plate 60 is attached with a film layer having microstructures on a side facing the light-emitting member 101. The film layer has a microstructure film with light spot shielding capability. The film layer is preferably a Bright View film (high light diffusion film) or a lumineit film (optical film) of the united states. And adhering the Bright View film to one side of the light-transmitting plate facing the light-emitting member by a film adhering process. Through practical verification, the light-transmitting plate attached with the microstructure film with the light-point shielding capability carries out light-point hiding treatment on the light-emitting piece and the lens, so that the hiding effect is greatly improved, and the visual effect is greatly improved.

As shown in fig. 8, 22 and 23, the box 40 includes a top plate 41 and a surrounding plate 42, a first end of the surrounding plate 42 is connected to the top plate 41, a second end of the surrounding plate 42 forms a light outlet, a center line of the surrounding plate 42 is disposed to be inclined with the top plate 41, the heat sink 80 includes a fixed plate 81 and an inclined plate 82 connected to the fixed plate 81, the light emitting element 101 is disposed on the inclined plate 82, and the fixed plate 81 is attached to the top plate 41. Since the inclined plate 82 is disposed on the heat sink 80, and the light emitting element 101 is disposed on the inclined plate 82, the light emitting angle of the light emitting element 101 and the light outlet are inclined. Meanwhile, the heat sink 80 can effectively dissipate heat of the light emitting element 101, and prevent the light emitting element 101 from being affected by an excessively high temperature. In embodiments not shown in the figures, the heat sink may also be provided on the apron.

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. A light fixture assembly, comprising:

a case (40);

a light emitting member (101) installed in the case (40);

a lens (1) mounted in the housing (40), the lens (1) having a symmetrical structure and having a central symmetry plane A0;

a light-transmitting plate (60) positioned on the path of the light emitted by the lens (1);

the heat dissipation piece (80) is arranged in the box body (40) and is in heat conduction connection with the luminous piece (101);

wherein the lens comprises: a lens body (10), a light inlet part, a light outlet part and a reflection part (30), wherein the light inlet part is arranged on the first surface (11) of the lens body (10) and comprises an installation concave part (20) which is concave towards the inside of the lens body (10) and is used for accommodating a luminous element (101), the installation concave part (20) comprises a bottom wall (21) and a cylindrical side wall (22) connected to the edge of the bottom wall (21),

the light outlet portion is arranged on a second surface (12) of the lens, the second surface (12) is parallel to the first surface (11), wherein the bottom wall (21) comprises an outer ring portion (211) and a central portion (212) positioned inside the outer ring portion (211), the outer ring portion (211) is convexly arranged towards the light inlet portion, the central portion (212) is convexly arranged towards the light outlet portion,

the reflection section (30) is provided on a side surface of the lens body (10) between the first surface (11) and the second surface (12).

2. A lamp assembly according to claim 1, wherein the housing (40) comprises a top plate (41) and a surrounding plate (42), a first end of the surrounding plate (42) is connected to the top plate (41), a second end of the surrounding plate (42) forms the light outlet (125), a center line of the surrounding plate (42) is arranged obliquely to the top plate (41), the heat sink (80) comprises a fixed plate (81) and an inclined plate (82) connected to the fixed plate (81), the light emitting element (101) is arranged on the inclined plate (82), and the fixed plate (81) is connected to the top plate (41).

3. The lamp assembly of claim 1,

the center of the luminous element (101) forms a central light point A1 at the opening of the mounting recess (20), the central part (212) comprises a midpoint A2, and a connecting line passing through the midpoint A2 and the central light point A1 is set as a central line L0;

the cylindrical side wall (22) includes a first side wall (221) and a second side wall (222) symmetrically disposed with respect to the central symmetry plane A0, the first side wall (221) and the second side wall (222) forming a first intersection line L14 and a second intersection line L25 in the central symmetry plane A0, the outer ring portion (211) forming a first curve L01 and a second curve L02 on both sides of a central portion (212) in the central symmetry plane A0, wherein,

the first curve L01 intersects the first intersection line L14 at a first intersection point B1, a connecting line between the central light point A1 and the first intersection point B1 is a first straight line L1, a first included angle is formed between the middle line L0 and the first straight line L1,

the second curve L02 intersects the second intersection line L25 at a second intersection point B2, a connection line between the central light point a1 and the second intersection point B2 is a second straight line L2, a second included angle is formed between the central line L0 and the second straight line L2, and the first included angle is larger than the second included angle.

4. A lamp assembly as claimed in claim 3, characterized in that said first intersection line L14 forms a third angle with a first perpendicular plane, said first perpendicular plane being perpendicular to said first surface (11), said third angle ranging between 2 ° and 5 °; and/or a fourth included angle is formed between the second intersecting line L25 and a second vertical plane, the second vertical plane is perpendicular to the first surface (11), and the range of the fourth included angle is 2-5 degrees.

5. The lamp assembly of claim 3,

the reflector (30) comprises a first arc-shaped face (31) and a second arc-shaped face (32) symmetrically arranged with respect to the central symmetry plane a0, the first arc-shaped face (31) and the second arc-shaped face (32) forming a third intersection line L38 and a fourth intersection line L69 on the central symmetry plane a0, the length of the third intersection line L38 being greater than the length of the fourth intersection line L69;

the third intersecting line L38 intersects the first surface (11) to form a third intersecting point B3, a tangent line passing through the third intersecting point B3 and serving as the third intersecting line L38 is set as a first extending line L3v, and a fifth included angle is formed between the first extending line L3v and the central line L0, and the fifth included angle is greater than or equal to 45 °.

6. The lamp assembly of claim 3,

the fourth intersection line L69 intersects the first surface (11) to form a fourth intersection point B4, a tangent line passing through the fourth intersection point B4 and serving as the fourth intersection line L69 is set to be a second extension line L6u, a sixth included angle is formed between the second extension line L6u and the middle line L0, and the sixth included angle is smaller than or equal to 45 °.

7. A lamp assembly as claimed in claim 5 or 6, characterized in that the third intersection line L38 and the first intersection line L14 are located on the same side of the centre line L0, and the fourth intersection line L69 and the second intersection line L25 are located on the same side of the centre line L0.

8. The lamp assembly of claim 3,

the reflector (30) comprises a first arc-shaped face (31) and a second arc-shaped face (32) arranged symmetrically with respect to the central symmetry plane A0, the first arc-shaped face (31) and the second arc-shaped face (32) forming a third intersection line L38 and a fourth intersection line L69 on the central symmetry plane A0, wherein,

the fourth intersection line L69 includes a first intersection line segment L67 and a second intersection line segment L79 connected to the first intersection line segment L67, the first intersection line segment L67 is closer to the first surface (11) than the second intersection line segment L79, and the length of the third intersection line L38 is greater than the length of the first intersection line segment L67.

9. A lamp assembly as claimed in claim 8, characterized in that the third intersection line L38 intersects the second surface (12) at a fifth intersection point, the second intersection line segment L79 intersects the second surface (12) at a sixth intersection point, the distance between the sixth intersection point and the mid line L0 being smaller than the distance between the fifth intersection point and the mid line L0.

10. A lamp assembly according to claim 7, wherein said outer ring portion (211) comprises a plurality of ring portions protruding towards said light inlet portion, said plurality of ring portions being sequentially connected in a direction from said cylindrical side wall (22) to said central portion (212), said central portion (212) comprising a plurality of protruding portions protruding towards said light outlet portion, said plurality of protruding portions being sequentially connected in a circumferential direction of said outer ring portion (211).

11. A lamp assembly according to claim 1, wherein the housing (40) comprises a top plate (41) and a surrounding plate (42), a first end of the surrounding plate (42) is connected to the top plate (41), a second end of the surrounding plate (42) forms a light outlet, the light-transmitting plate (60) is disposed at the light outlet, the top plate (41) and the light outlet are disposed in parallel, a central line of the surrounding plate (42) and the top plate (41) are disposed in an inclined manner, and the light-emitting member (101) is disposed at an acute angle between the surrounding plate (42) and the top plate (41).

12. A lamp assembly as claimed in claim 1, characterized in that a straight line through the central spot a1 of the lighting element (101) and perpendicular to the ground is set as a vertical axis C1, the central spot a1 of the lighting element (101) is set to form a chief ray of the outgoing light beam C2 when passing through the housing (40), the vertical axis C1 forms a seventh angle with the chief ray of the outgoing light beam C2, and the seventh angle ranges between 45 ° and 80 °.

13. A lamp assembly as claimed in claim 11, characterized in that the reflective part (30) comprises a first arc-shaped face (31) and a second arc-shaped face (32) arranged symmetrically with respect to the central symmetry plane a0, the first arc-shaped face (31) and the second arc-shaped face (32) forming a third intersection line L38 and a fourth intersection line L69 on the central symmetry plane a0, the third intersection line L38 being closer to the top plate (41) than the fourth intersection line L69, the inner side of the third intersection line L38 being directed towards the light-transmitting plate (60).

14. A luminaire assembly as claimed in claim 1, characterized in that the light-transmitting plate (60) comprises a rayleigh scattering plate or a light mixing plate or a light exit cover or a light exit panel.

15. A light fixture assembly according to claim 1 wherein the light fixture assembly comprises a sky or grill light or a wall wash or a counter top or kitchen and toilet light.