WO2017067483A1

WO2017067483A1 - Lens and light source module

Info

Publication number: WO2017067483A1
Application number: PCT/CN2016/102747
Authority: WO
Inventors: 廉瑞凯; 乔胜玉; 邓诗涛
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

Provided are a lens (1) for light distribution and a light source module (100). The lens (1) comprises an integrally extending optical region (11) being used for light distribution, and a driving power supply containing region (121) located at one side of the optical region (11) and used for containing a driving power supply. The optical region (11) is provided with a light source containing groove (111), and the driving power supply containing region (121) is provided with a driving power supply containing groove (1211). The lens (1) is provided with the optical region (11) for secondary light distribution, so that an illumination region and a light emitting effect, needed by an illumination lamp, can also be realized by enlarging an illumination angle of a light source by using the lens (1) under the condition that the quantity of light emitting units is reduced. The light source module (100) is provided with the lens (1).

Description

Lens and light source module

Technical field

The invention belongs to the technical field of semiconductor illumination, and in particular relates to a lens and a light source module applied in a lighting device.

Background technique

With the rapid development of semiconductor lighting technology, LED lighting fixtures, such as LED ceiling lamps, are increasingly used in indoor spaces, but the cross-section light distribution of LEDs emitted by LED lighting units in LED lighting fixtures is similar. Lambert's light distribution, and the full width of the Lambertian light distribution angle is about 120 degrees, therefore, the LED lighting unit emits light and forms a bright spot on the ceiling lamp mask, or the bright and dark transition is uneven. Therefore, the LED light-emitting unit is densely arranged on the light source substrate of the light source module of the existing LED lighting device to solve the problem that the LED lighting lamp has poor lighting effect.

However, by increasing the number of LED light-emitting units to achieve uniformity of light-emitting brightness, the cost of the light source module is also increased, so that the cost of the LED lighting device using the light source module is also high. Therefore, how to realize the LED lighting fixture has both the luminous effect and the cost is a problem to be solved by the present invention.

In addition, the existing LED lighting fixtures are mostly integrated, and the components therein are assembled into LED lighting fixtures and installed on the indoor ceiling. When the components in the LED lighting fixtures, such as the light source or the driving power source, need to be replaced, the above components are not easy to be replaced. It is detached from the LED lighting fixture housing and assembled again into the housing.

Summary of the invention

An object of the present invention is to solve the above problems and to provide a lens for secondary light distribution of a light source, which realizes an illumination area and a light-emitting effect required for the illumination lamp by enlarging the illumination angle of the light source.

In order to achieve the above object, the present invention provides a lens including an optical region for light distribution integrally extended, and a driving power source accommodating region for accommodating a driving power source on one side of the optical region, wherein the optical region is provided The light source receiving groove is provided with a driving power source receiving groove in the driving power source accommodating area.

Further, the optical region is annular, and the driving power supply receiving area is The optical zone is surrounded by its inner side of the optical zone.

Further, the optical region has an upper surface and a lower surface, the light source receiving groove is formed on a lower surface of the optical region, and the light source receiving groove has a bottom surface, wherein the bottom surface is a light incident surface, and the upper surface For the light to exit the surface.

Further, the light incident surface and the light exit surface are arcuate curved surfaces, and the curvature of the light incident surface is larger than the curvature of the light exit surface so that the illumination angle of the light passing through the lens becomes larger.

Further, the lens further includes a positioning hole located inside the optical area.

The object of the present invention is to solve the above problems, and to provide a light source module which is applied to a lighting fixture and which is low in cost and capable of realizing an illumination area and a lighting effect required for the lighting fixture.

A light source module includes a lens, a substrate assembled on the lens, and a plurality of light emitting units disposed on the substrate, the lens including an optical region for integrally distributing light and a side of the optical region for receiving driving A driving power source accommodating area is disposed on the optical area, and the driving power source accommodating area is provided with a driving power source receiving slot.

Further, the light source module further includes a driving power source disposed on the substrate and housed in the driving power source receiving groove.

Further, the plurality of light emitting units are housed in the light source receiving grooves of the optical region and arranged along the extending direction of the optical region.

Further, the optical region is annular, and the driving power source accommodating region is surrounded by the optical region so as to be located inside the optical region.

Further, the lens further includes a positioning hole, the positioning hole is located inside the optical area, and the substrate is provided with a through hole corresponding to the positioning hole.

Further, the light emitting unit is an LED light emitting unit.

Compared with the prior art, since the lens provided by the present invention has an optical region for secondary light distribution, in the case of reducing the light-emitting unit, the illumination required by the illumination source can be realized by expanding the illumination angle of the light source by the lens. Area and illuminating effect, therefore, with upper The light source module of the lens has the advantages of low cost, and can realize a certain illumination area and a luminous effect. At the same time, the lens has a driving power receiving area, and the lens structure is fully utilized. Therefore, the light source module having the lens and the driving power source can be assembled as a module into the housing of the lighting fixture. Therefore, the light source module has an easy installation. And the characteristics of disassembly.

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 lens according to a first embodiment of the present invention;

2 is a perspective view of another angle of the lens according to the first embodiment of the present invention;

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

Figure 4 is an enlarged view of the plane shown in the circle inside Figure 3;

FIG. 5 is a perspective view of a light source module according to a second embodiment of the present invention; FIG.

FIG. 6 is another perspective view of a light source module according to a second embodiment of the present invention; FIG.

Figure 7 is an exploded perspective view of Figure 5;

Figure 8 is an exploded perspective view of Figure 6;

Figure 9 is a cross-sectional view taken along line B-B of Figure 5;

Figure 10 is a cross-sectional view taken along line C-C of Figure 5;

11 is an optical path diagram of a lens edge portion according to a first embodiment of the present invention;

Figure 12 is a light distribution diagram of a cross section of a lens edge portion according to a first embodiment of the present invention.

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.

1 and 2 show a first embodiment of the present invention for emitting a light source The light is subjected to secondary light distribution, that is, the optical path adjustment lens 1, which can be made of a transparent plastic material (such as PC, PMMA) and integrally molded by injection molding. The structure of the lens 1 provided in the first embodiment of the present invention will be further described in detail below.

As shown in FIGS. 1 to 3, the lens 1 has a square shape, and the four corners of the lens 1 are rounded. The lens 1 includes an edge portion 11 and an intermediate portion 12 located inside the edge portion 11, and the edge portion 11 is an optical region of the lens 1. The lower surface of the edge portion 11 is provided with an annular recessed groove 111. The light source can be disposed in the recessed groove 111. Therefore, the recessed groove 111 can also be referred to as a light source receiving groove. At the same time, the face shapes of the respective sections of the edge portion 11 in the extending direction are uniform. A portion of the intermediate portion 12 of the lens 1 is arched upwardly from the lower surface to form a projection 121, and the projection portion 121 is provided with a receiving groove 1211. In addition, a positioning hole 122 is further disposed on the intermediate portion 12 of the lens 1. The positioning hole 122 is disposed adjacent to the protruding portion 121, and the positioning hole 122 extends through the intermediate portion 12. It should be noted that the receiving slot 1211 can be used to receive a driving power source (not shown). Therefore, the protruding portion 121 can be referred to as a driving power source accommodating region, and the receiving slot 1211 can be referred to as a driving power source receiving slot. A stud hole (not shown) is provided at four corners of the edge portion 11 of the lens 1 and the intermediate portion 12. In addition, the shape of the lens 1 is only an illustrative description, and is not limited to a square shape, and may be a shape such as a circle, a rectangle, or a hexagon.

As shown in FIG. 3 and FIG. 4, the recessed groove 111 has a bottom surface 112 having an arcuate curved surface, and the bottom surface 112 is a light incident surface. The edge portion 11 has an upper surface 113 having an arcuate curved surface, and the upper surface 113 is a light exiting surface. Further, the curvature of the light incident surface 112 is greater than the curvature of the exit surface 113, that is, the light incident surface 112 is more curved than the light exit surface 113.

FIG. 5 to FIG. 10 show a light source module 100 that is applied to a lighting fixture and that can realize a certain illumination area and has uniform illumination brightness according to the second embodiment of the present invention. The light source module 100 includes a lens 1 provided by the first embodiment of the present invention, a substrate 2 assembled under the lens 1 , and a plurality of light emitting units 3 disposed on the substrate 2 . The structure of the lens 1 has been described in detail above, and the detailed description thereof will not be repeated here. The substrate 2 and the light-emitting unit 3 will be described in detail below.

The substrate 2 can be a printed circuit board having conductive traces. The configuration of the substrate 2 on the horizontal surface is substantially the same as that of the lens 1, and the substrate 2 has a square shape, and its four corners are rounded. The substrate 2 is provided with a through hole 21 corresponding to the positioning hole 122. Further, four screw holes (not shown) corresponding to the stud holes on the lens 1 are provided on the substrate 2, and therefore, the substrate 2 and the lens 1 can be positioned together by screws (not shown).

The light emitting unit 3 is an LED light emitting unit, which can pass a surface mounting process (Surface Mount Technology, SMT) or Through Hole Technology (THT) is mounted on the edge of the substrate 2. A plurality of light-emitting units 3 are electrically connected to each other through a conductive line on the substrate 2. A plurality of light emitting units 3 are sequentially arranged in the extending direction of the edge portion 11 of the lens 1. It should be noted that a plurality of light-emitting units 3 are disposed below the edge portion 11 of the lens 1 and correspond to the recessed grooves 111, that is, the light-emitting unit 3 can be regarded as being housed in the recessed grooves 111. In addition, the light source module 100 emits light of uniform brightness by adjusting the size of the rounded corners of the substrate 2 and the number of the light-emitting units 3 at the rounded corners.

It should be noted that the light source module 100 can be applied to a lighting fixture (not shown), such as a ceiling lamp. After the illumination lamp is activated, the light emitted by the light-emitting unit 3 in the light source module 100 passes through the light incident surface 112 of the edge portion 11 of the lens 1 and then undergoes an outward refracting. The light extends in a straight line in the edge portion 11 of the lens 1 when the light is rays. After reaching the light exit surface 113, secondary outward refraction occurs. After two outward refracting, the illumination angle of the light source module 100 is increased. Please refer to the optical path diagram (Fig. 11) and the light distribution curve (Fig. 12). As can be seen from Fig. 12, the illumination angle is close to 180 degrees. Since the illumination angle of the light source module 100 is increased, even when the light-emitting unit 3 is not installed at the intermediate position of the substrate 2, the intermediate portion of the illumination fixture can have a certain brightness. Compared with the prior art, in the case of maintaining the original brightness of the lighting fixture, the size of the substrate 2 carrying the light-emitting unit 3 in the light source module 100 can be reduced, and the number of the light-emitting units 3 can also be reduced, thereby reducing the light source module. The manufacturing cost of 100. In addition, since the driving power source can be mounted on the substrate 2 of the light source module 100 and housed in the receiving slot 1211 of the lens 1, the space of the substrate 2 of the light source module 100 is fully utilized, and thus the light source module including the driving power source is included. The set 100 can be assembled as a module into the housing of the lighting fixture. In addition, since the light source module 100 has the positioning holes 122, the light source module 100 can be easily assembled into and detached from the housing (not shown) of the lighting fixture. Of course, the light source module 100 is not limited to being mounted on the housing of the lighting fixture through the positioning hole 122. The light source module 100 can also be directly adsorbed by a magnetic mounting component (not shown) disposed on the substrate and/or the lens. The housing of the lighting fixture is also easily detachable by the magnetic mounting component light source module 100. At the same time, the lens 1 on the light source module 100 also serves as an electrically insulating housing, which improves the safety level.

In summary, since the lens provided by the present invention has an optical region for secondary light distribution, in the case of reducing the light-emitting unit, the illumination area required for the illumination device can be realized by expanding the illumination angle of the light source by the lens and The light-emitting effect is therefore advantageous in that the light source module having the above-described lens has a low cost and can realize a certain illumination area and a light-emitting effect. At the same time, the lens has a driving power receiving area, and the lens structure is fully utilized. Therefore, the light source module having the lens and the driving power source can be assembled as a module into the housing of the lighting fixture. Therefore, the light source module has an easy installation. To the lighting fixtures and features removed from the lighting fixtures.

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 lens comprising: an optical region for light distribution integrally extending, and a driving power source accommodating region for accommodating a driving power source on a side of the optical region, wherein the optical region is provided with a light source receiving groove; The driving power source accommodating area is provided with a driving power source receiving slot.
The lens according to claim 1, wherein said optical region is annular, and said driving power source accommodating region is surrounded by said optical region so as to be located inside said optical region.
The lens according to claim 2, wherein the optical region has an upper surface and a lower surface, the light source receiving groove is formed on a lower surface of the optical region, and the light source receiving groove has a bottom surface, The bottom surface is a light incident surface, and the upper surface is a light exit surface.
The lens according to claim 3, wherein the light incident surface and the light exit surface are arcuate curved surfaces, and the curvature of the light incident surface is larger than the curvature of the light exit surface to increase the illumination angle of the light passing through the lens. .
The lens according to claim 2, wherein said lens further comprises a positioning hole located inside the optical area.
A light source module includes a lens, a substrate assembled on the lens, and a plurality of light emitting units disposed on the substrate, the lens including an optical region for light distribution and an optical region side A driving power source accommodating area for accommodating a driving power source, wherein the optical area is provided with a light source accommodating groove, and the driving power source accommodating area is provided with a driving power source accommodating groove.
The light source module according to claim 6, wherein the light source module further comprises a driving power source disposed on the substrate and housed in the driving power source receiving groove.
The light source module according to claim 6 or 7, wherein the plurality of light emitting units are housed in the light source receiving grooves of the optical region and arranged along the extending direction of the optical region.
The light source module according to claim 6, wherein the optical region is annular, and the driving power source accommodating region is surrounded by the optical region so as to be located inside the optical region.
The light source module according to claim 9, wherein said lens is further included A positioning hole is disposed, the positioning hole is located inside the optical area, and the substrate is provided with a through hole corresponding to the positioning hole.
The light source module according to claim 6, wherein the light emitting unit is an LED light emitting unit.
The light source module according to claim 6 or 9, wherein the optical area has an upper surface and a lower surface, the light source receiving groove is formed on a lower surface of the optical area, and the light source receiving groove has a The bottom surface is a light incident surface, and the upper surface is a light exit surface.
The light source module according to claim 12, wherein the light incident surface and the light exit surface are arcuate curved surfaces, and the curvature of the light incident surface is greater than the curvature of the light exit surface such that the light angle of the light passing through the lens Become bigger.