WO2017067482A1

WO2017067482A1 - Light distribution element, light source module and lighting fixture

Info

Publication number: WO2017067482A1
Application number: PCT/CN2016/102746
Authority: WO
Inventors: 卜晨曦; 王明权; 王洪波
Original assignee: 欧普照明股份有限公司
Priority date: 2015-10-23
Filing date: 2016-10-20
Publication date: 2017-04-27

Abstract

A light distribution element (10), provided with a light entrance surface (101) and a light exit surface (102), wherein the light incident surface (101) and the light exit surface (102) are curved surfaces parallel to each other so that the light distribution element (10) is arranged at equal thickness; the light incident surface (101) of the light distribution element (10) is provided with a microstructure (103) for light distribution; and the light distribution element (10) has a light diffusion material for light distribution. Thereby, the light emitted from the light source can be uniformly distributed after passing through the light distribution element (10). Further provided is a light distribution element (10) including a light source module (40) and a lighting fixture (100).

Description

Light distribution component, light source module, lighting fixture

Technical field

The invention belongs to the technical field of semiconductor illumination, and in particular relates to a light distribution component, a light source module and a lighting fixture.

Background technique

Existing lighting fixtures on the market, such as ceiling lamps, still use conventional fluorescent tubes inside, and the above-mentioned fluorescent tubes have the defects of low luminous efficiency and high energy consumption. From an alternative point of view, the light source module can conveniently replace the fluorescent tube inside the ceiling lamp. However, since the cross-section light distribution of the light emitted by the light source module is similar to the Lambertian light distribution, after the light source module is applied inside the ceiling lamp, a bright spot is formed on the ceiling lamp mask, or the center is too bright, or the light and dark transition Unevenness, therefore, existing lighting fixtures have the problem of uneven illumination brightness, that is, the problem of poor illumination.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to provide a light distribution element capable of uniformly distributing the brightness of light emitted from a lighting fixture.

In order to achieve the above object, the present invention provides a light distribution element provided with a light incident surface and a light exit surface, wherein the light incident surface and the light exit surface are arcuate curved surfaces and are parallel to each other such that the light distribution elements are equal. In the thickness setting, the light incident surface of the light distribution element is provided with a microstructure for light distribution, and the light distribution element has a light diffusion material for light distribution.

Further, the microstructure includes a plurality of tines.

Further, the microstructure includes a plurality of curved ribs.

Further, the light distribution element has a ring shape.

Further, the microstructure extends into a ring shape within the light distribution element.

The object of the present invention is to solve the above problems, and to provide a light source module capable of uniformly distributing the brightness of light emitted by a lighting fixture.

In order to achieve the above object, the present invention provides a light source module including a light distribution element, a substrate on one side of the light distribution element, and a plurality of LED light emitting units mounted on the substrate, wherein the light distribution element is provided a light incident surface and a light exit surface, wherein the light incident surface and the light exit surface are both arcuate curved surfaces and are parallel to each other such that the light distribution elements are disposed in equal thickness, and the light incident surface of the light distribution element is provided for light distribution. Microstructure, the light distribution element has light diffusion for light distribution Material.

Further, the light distribution component is provided with a receiving slot, and the plurality of LED lighting units are received in the receiving slot.

Further, the microstructure includes a plurality of tines.

Further, the microstructure includes a plurality of curved ribs.

Further, the light distribution element and the substrate are both annular.

Further, the light distribution element is equal to or equal to the substrate bottom area.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems, and to provide a lighting fixture capable of emitting light with uniform brightness distribution.

In order to achieve the above object, the present invention further provides a lighting fixture, comprising: a light source module, a mask covering the light source module, and a cover plate that receives the light source module and is assembled to the mask, the light source module includes a light distribution component, a substrate on one side of the light distribution element and a plurality of LED light emitting units mounted on the substrate, the light distribution element is provided with a lower surface and an upper surface opposite to the lower surface, and the light distribution element is provided with light incidence The light incident surface and the light exit surface are arcuate curved surfaces and are parallel to each other such that the light distribution elements are disposed in equal thickness, and the light incident surface of the light distribution element is provided with a microstructure for light distribution. The light distribution element has a light diffusing material for distributing light.

Further, the light distribution element and the substrate are both annular.

Compared with the prior art, the light-incident surface of the light distribution component provided by the embodiment of the invention has a microstructure and a light-diffusing material in the light-distributing component, so that the light emitted from the LED light-emitting unit in the light source module passes through the distribution. Since the luminance distribution of the optical element is uniform, the light source module and the illumination lamp including the light distribution element of the present invention can emit light having a uniform brightness.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a perspective view of a light distribution component according to a first embodiment of the present invention;

2 is another perspective view of a light distribution component according to a first embodiment of the present invention;

Figure 3 is a cross-sectional view taken along line A-A of Figure 1;

4 to 6 are cross-sectional views of other three light distribution elements according to a first embodiment of the present invention;

7 to FIG. 10 are optical path diagrams of the four light distribution elements not provided with the light diffusion material according to the first embodiment of the present invention;

11 to 13 respectively show light distribution curves corresponding to light distribution elements having a low degree of diffusion;

FIG. 14 is a perspective view of a light source module according to a second embodiment of the present invention; FIG.

Figure 15 is an exploded perspective view of Figure 14;

Figure 16 is an exploded perspective view of another angle of Figure 14;

Figure 17 is a cross-sectional view taken along line B-B of Figure 14;

Figure 18 is a perspective view of a lighting fixture according to a third embodiment of the present invention;

Figure 19 is an exploded perspective view of Figure 18;

Figure 20 is an exploded perspective view of another angle of Figure 18;

Figure 21 is a cross-sectional view taken along line C-C of Figure 18.

detailed description

The technical solutions of the present invention will be clearly and completely described in conjunction with the specific embodiments of the present invention and the accompanying drawings. It is apparent that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 and FIG. 2 show a light distribution component 10 for adjusting light path of light emitted by a light source according to a first embodiment of the present invention. The light distribution component 10 can be made of a transparent plastic material (such as PC, PMMA, etc.). Made of, and is integrally molded by injection molding technology.

As shown in FIGS. 1 and 2, the light distribution element 10 has a lid shape and is a closed hexagonal ring shape. In addition to the hexagonal ring shape, in other alternative embodiments, the light distribution element 10 may also be a closed circular, triangular or the like ring shape, and the closed configuration is within the scope of the present invention. The structure of the light distribution element 10 provided by the first embodiment of the present invention will be further described in detail below.

As shown in FIG. 1 to FIG. 3 and FIG. 7 , the lower surface of the light distribution component 10 of the first embodiment of the present invention is provided with a receiving groove 105 for accommodating the light source 30 , and the receiving groove 105 has a bottom surface 101 . The bottom surface is the light incident surface. The light distribution element 10 has an upper surface 102 which is a light exit surface. The light incident surface 101 of the light distribution element 10 is provided with a center line 104 which divides the light incident surface 101 into two parts, and the center line 104 has a circular shape. Further, the light distribution element The outer side of the centerline 104 is provided with a continuously extending annular microstructure 103. Referring to FIG. 2 and FIG. 3, the light distribution element 10 has an arch shape and is substantially semicircular, and both the light incident surface 101 and the light exit surface 102 have an arcuate curved surface. The light incident surface 101 and the light exit surface 102 are parallel to each other such that the light distribution element 10 is disposed in equal thickness. The microstructures 103 on the light incident surface 101 of the light distribution element 10 are serrated, and the microstructures 103 include a plurality of tines 1031, each of which includes an opposite inner side 1032 and an outer side 1033. When a part of the light emitted from the light source 30 passes through the inner side surface 1032 of the tines 1031, the light is refracted and is emitted straight out through the light distribution element 10. The light emitted from the light source 30 is scattered and spread outward by the microstructure 103 of the light distribution element 100. See FIG. 7 for the optical path of the light distribution element 10.

As shown in FIG. 4 to FIG. 6, the first embodiment of the present invention further provides three

light distribution elements

10a, 10b, 10c which are substantially identical in structure to the light distribution element 10. The

light distribution elements

10a, 10b, 10c are different from the light distribution element 10 in that the microstructures 103a, 103b, 103c on the

light distribution elements

10a, 10b, 10c are different from the microstructures 103 on the light distribution element 10. The microstructures 103a, 103b, 103c of the three

light distribution elements

10a, 10b, 10c will be described below.

As shown in FIG. 4 and FIG. 8, the microstructures 103a on the light incident surface 101a of the light distribution element 10a are also serrated and symmetrically disposed along the center line 104a of the light incident surface 101a, and the microstructures 103a are the microstructures 103 along the light distribution. The center line 104a of the light incident surface 101a of the element 10a is symmetrically distributed. Therefore, when a part of the light emitted from the light source 30 passes through the microstructure 103a, the light is refracted and is emitted straight outward through the light distribution element 10a. The light emitted by the light source is scattered and spread outward by the microstructure 103a of the light distribution element 100a, and the light path corresponding to the light distribution element 10a is shown in FIG.

Further, as shown in FIGS. 5 and 6, the microstructures 103b, 103c of the light-

incident elements

10b, 10c of the light-

incident elements

10b, 101c may be continuous arc-shaped rib structures. The microstructure 103b shown in Fig. 5 includes a plurality of arcuate ribs 1031b continuously connected in the width direction of its cross section. The microstructure 103c shown in Fig. 6 includes two connected arcuate ribs 1031c in the width direction of its cross section. The

arcuate ribs

1031b, 1031c are mainly used to dissipate the light emitted by the light source 30, and the

light distribution elements

10b, 10c correspond to the optical path diagrams in FIGS. 9 and 10.

Further, a light diffusion material (not shown) of a certain concentration is added to the

light distribution elements

10, 10a, 10b, and 10c provided by the first embodiment of the present invention, so that the

light distribution elements

10, 10a, 10b, and 10c have a certain diffusion. degree. It should be noted that the diffusing degrees of the

light distribution elements

10, 10a, 10b, and 10c are related to the concentration of the light diffusing material in the

light distributing elements

10, 10a, 10b, and 10c, and the light diffusing material has a higher concentration, and the light distributing element 10 is provided. The higher the degree of diffusion of 10a, 10b, 10c, the smaller the concentration of the light diffusing material, and the lower the degree of diffusion of the

light distribution elements

10, 10a, 10b, 10c. Light distribution component Adding light diffusion material to 10, 10a, 10b, and 10c makes the light distribution more regular, and the cross-section light distribution effect of the batwing is obtained, as shown in FIG. At the same time, the yellow spots and scattering streaks which appear on the illumination lamp mask after the light emitted by the light source passes through the

light distribution elements

103, 103a, 103b, 103c (the light distribution elements before the light diffusion material is added) are also eliminated.

11 to 13 respectively show cross-sectional light distribution curves corresponding to the light distribution elements with low to high diffusivity, and the higher the degree of diffusion of the light distribution elements, the smoother the transition of the cross-section light distribution curve, so when the light passes In the case of the light distribution element corresponding to Fig. 13, a more uniform light-emitting effect can be obtained.

14 to 17 show a light source module 40 according to a second embodiment of the present invention. The structure of the light source module 40 will be specifically described below.

The light source module 40 includes a hexagonal substrate 20, a plurality of LED light emitting units 30 disposed on the upper surface of the substrate 20, and a hexagonal light distribution element 10 assembled on the upper surface of the substrate 20 and shielding a plurality of LED light emitting units 30. The substrate 20 and the light distribution element 10 may have a closed ring shape such as a circular shape or a triangular shape. It can be seen that the substrate 20 and the light distribution element 10 have the same bottom area or the same maximum width, that is, the light distribution element 10 completely covers the substrate 20 and the outer surface is flush.

It should be noted that, in addition, the

light distribution elements

10a, 10b, and 10c having different microstructures 103a, 103b, and 103c provided by the first embodiment of the present invention can also be applied to the light source module 40.

The substrate 20 can be a printed circuit board having conductive traces thereon. A plurality of LED lighting units 30 may be mounted on the substrate 20 by Surface Mount Technology (SMT) or Through Hole Technology (THT). A plurality of LED lighting units 30 are electrically connected to each other through a conductive line on the substrate 20.

FIG. 18 to FIG. 21 show a lighting fixture 100 according to a third embodiment of the present invention, which includes a light source module 40, a mask 50 for covering the light source module 40, and a light source module 40. The cover 60 is assembled to the mask 50, and the mask 50 and the cover 60 assemble the housing of the lighting fixture 100. The mask 50 can be made of a transparent plastic material (such as PC, PMMA, etc.), and the cover 60 can also be made of a plastic material. The mask 50 has a circular shape.

Since the

light distribution elements

10, 10a, 10b, and 10c in the light source module 40 have the

microstructures

103, 103a, 103b, and 103c, and the

light distribution elements

10, 10a, 10b, and 10c also have light diffusion materials (not shown). ), the light emitted by the LED lighting unit 30 is in the mask of the lighting fixture 100 The effect of uniform illumination is formed on the 50, that is, the brightness of the light passing through the mask 50 is more evenly distributed from the middle to the edge of the mask 50.

The light-incident surface of the light distribution component provided by the embodiment of the invention has a microstructure and a light-diffusing material in the light-distributing component, so that the light emitted from the LED light-emitting unit in the light source module passes through the light-distributing component and has uniform brightness distribution. Therefore, the light source module and the illumination lamp including the light distribution component provided by the embodiment of the invention can emit light with uniform brightness distribution.

The specific embodiments of the present invention have been described in detail with reference to the preferred embodiments of the present invention. All modifications, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

A light distribution element is characterized in that: a light incident surface and a light exit surface are provided, and the light incident surface and the light exit surface are both arcuate curved surfaces and are parallel to each other such that the light distribution elements are of equal thickness. The light incident surface of the light distribution element is provided with a microstructure for light distribution, and the light distribution element has a light diffusion material for light distribution.
The light distribution element of claim 1 wherein said microstructure comprises a plurality of tines.
The light distribution member of claim 1 wherein said microstructure comprises a plurality of curved ribs.
The light distribution member according to claim 1, wherein said light distribution member has a ring shape.
The light distribution member according to claim 4, wherein said microstructure extends in a ring shape in said light distribution member.
A light source module, comprising: a light distribution element; a substrate on a side of the light distribution element; and a plurality of LED light emitting units mounted on the substrate, wherein the light distribution element is provided with a light incident surface and a light exit surface, wherein the light incident surface and the light exit surface are arcuate curved surfaces and are parallel to each other such that the light distribution elements are disposed in equal thickness, and the light incident surface of the light distribution element is provided with a microstructure for light distribution. The light distribution element has a light diffusing material for distributing light.
The light source module according to claim 6, wherein the light distribution element is provided with a receiving groove, and the plurality of LED light emitting units are received in the receiving groove.
The light source module of claim 6 wherein said microstructure comprises a plurality of tines.
The light source module of claim 6 wherein said microstructure comprises a plurality of curved ribs.
The light source module according to claim 6, wherein the light distribution element and the substrate are both annular.
The light source module according to claim 10, wherein the microstructure extends in a ring shape in the light distribution element.
The light source module according to claim 6, wherein the light distribution element has an area equal to or equal to a substrate bottom area.
A lighting fixture characterized in that it comprises a light source module and a light source module a mask and a cover plate that receives the light source module and is assembled to the mask, the light source module includes a light distribution component, a substrate on a side of the light distribution component, and a plurality of LED light emitting units mounted on the substrate, The light element is provided with a lower surface and an upper surface opposite to the lower surface, and the light distribution element is provided with a light incident surface and a light exit surface, wherein the light incident surface and the light exit surface are both arcuate curved surfaces and are parallel to each other The light distribution element is provided in an equal thickness, and the light incident surface of the light distribution element is provided with a microstructure for light distribution, and the light distribution element has a light diffusion material for light distribution.
The lighting fixture of claim 13 wherein said light distribution element is equal or equal in width to the bottom surface of the substrate.
A lighting fixture according to claim 13, wherein said light distribution member and said substrate are both annular.