CN106500012B

CN106500012B - Light source module and lighting device

Info

Publication number: CN106500012B
Application number: CN201611247479.4A
Authority: CN
Inventors: 尹松; 邓诗涛; 李建国; 陈明; 黄爱琴
Original assignee: Suzhou Op Lighting Co Ltd
Current assignee: Suzhou Op Lighting Co Ltd
Priority date: 2016-12-29
Filing date: 2016-12-29
Publication date: 2023-02-28
Anticipated expiration: 2036-12-29
Also published as: CN106500012A

Abstract

The invention discloses a light source module and a lighting device, wherein the light source module comprises a light-emitting component and a lens, the lens is provided with a bottom surface, an inner surface, an outer surface and a first accommodating cavity for accommodating the light-emitting component, the wall surface of the first accommodating cavity is the inner surface of the lens, the inner surface is in a sawtooth shape and comprises a first light-in surface, a second light-in surface and a third light-in surface, the outer surface comprises a first light-out surface, a second light-out surface and a third light-out surface, one part of light rays entering the lens from the first light-in surface are reflected to the second light-out surface through the first light-out surface and then emitted, the other part of light rays directly emit light from the first light-out surface, and the light rays entering the lens from the second light-in surface and the third light-in surface are reflected to the third light-out surface and then emitted. The lens in the light source module in the lighting device comprehensively utilizes the superposition effect of internal reflection and refraction by arranging the serrated inner surface, so that the emergent light of the lighting device has larger angle distribution, and the requirement of high uniformity is met.

Description

Light source module and lighting device

Technical Field

The invention belongs to the technical field of illumination, and particularly relates to a light source module and an illumination device.

Background

The light source module of the lighting device applied to the application fields of television backlight, ceiling lamps, advertising lamp boxes and the like needs to have the double characteristics of large-angle irradiation and uniform irradiation. The light source module comprises a light emitting component, and because the beam angle of the light emitting component is not large enough, the light energy utilization efficiency is not high, secondary light distribution needs to be carried out through the lens, so that the light emitting angle is enlarged, and the light energy utilization rate is improved. However, the existing lens is limited by its shape and material properties, so that the distribution and utilization effects of light energy are still not ideal, and the effects of light emission in a large angle range and high uniformity cannot be effectively formed.

Disclosure of Invention

The present invention is directed to solving the above problems, and an object of the present invention is to provide a light source module and a lighting device capable of emitting light at a large angle.

In order to achieve the above object, the present invention provides a light source module, including:

a light emitting assembly including a light source board and a light emitting unit on the light source board,

the lens comprises a bottom surface, an inner surface, an outer surface and a first accommodating cavity, the wall surface of the first accommodating cavity is the inner surface of the lens, the light-emitting component is accommodated in the first accommodating cavity,

the cross section of the inner surface is sawtooth-shaped and comprises at least three light incident surfaces including a first light incident surface, a second light incident surface and a third light incident surface,

the outer surface comprises at least three light-emitting surfaces including a first light-emitting surface, a second light-emitting surface and a third light-emitting surface,

wherein, a part of the light entering the lens from the first light incident surface is reflected to the second light emergent surface by the first light emergent surface and is refracted by the second light emergent surface for emitting, and the other part of the light is directly emitted from the first light emergent surface,

and the light rays entering the lens from the second light incident surface and the third light incident surface are refracted to the third light emitting surface and then emitted after being refracted by the third light emitting surface.

Furthermore, the lens is of an axisymmetric structure,

the cross section of the inner surface is in a sawtooth shape and comprises a first light incident surface protruding towards the direction of the first accommodating cavity and at least two pairs of tooth angles extending into the first accommodating cavity, wherein the first pair of tooth angles comprises a second light incident surface which is oppositely arranged, the second pair of tooth angles comprises a third light incident surface which is oppositely arranged,

the outer surface comprises two first light-emitting surfaces which are positioned in the middle top area and opposite to each other, a second light-emitting surface which is positioned on two sides of the two first light-emitting surfaces and is respectively crossed with the adjacent first light-emitting surfaces, and a third light-emitting surface which extends from the second light-emitting surface to the bottom surface, the two first light-emitting surfaces form a V-shaped structure, and the third light-emitting surface is a curved surface which protrudes in the direction away from the first accommodating cavity.

Further, the tip of the second pair of tooth angles is closer to the bottom surface than the tip of the first pair of tooth angles.

Further, the second pair of tooth angles further includes a bottom wall surface serving as an adjacent surface of the third light incident surface, and the inner surface further includes a pair of side wall surfaces adjacent to the bottom wall surface.

Further, the bottom wall surface and the side wall surface enclose a housing area.

Further, the lens still includes a pair of stand, the stand comprises lateral wall surface, the partial and the bottom surface of the surface that lateral wall surface corresponds.

Furthermore, the bottom wall surface is a reflection surface, light entering the lens from the third light incident surface is refracted to the reflection surface, reflected to the third light emitting surface by the reflection surface and refracted by the third light emitting surface to be emitted.

Furthermore, the other part of the light directly emitted from the first light-emitting surface is refracted and then emitted or directly transmitted.

Furthermore, the bottom wall surface is a curved surface and is a total internal reflection surface.

Further, the second light incident surface is adjacent to the first light incident surface, the first light incident surface is a curved surface, and the second light incident surface and the third light incident surface are planes.

Further, the lens is a linear or curved axisymmetric structure, the extending direction of the lens is a longitudinal direction, the direction perpendicular to the longitudinal direction is a transverse direction, the central axis of the lens is orthogonal to the transverse direction and the longitudinal direction, and the cross section of each point of the lens in the longitudinal direction is the same.

Further, the lens is of an axial rotation symmetrical structure.

Further, the light source module further comprises a mounting base arranged below the lens.

Furthermore, the lens can be assembled on the mounting base in a removable manner along the lengthwise extending direction.

Furthermore, the mounting base is provided with a clamping part, and the lens is provided with a connecting part extending out and can be contained in the clamping part in a removable way.

Furthermore, one surface of the light source board, which is not provided with the light emitting unit, is attached to the mounting base.

Furthermore, the light source module is including setting up lens both ends and group locate the baffle of mounting base, the baffle seals the first chamber of acceping of lens.

Furthermore, the baffle is attached to the end face of the lens and provided with at least one pair of clamping parts extending from the end face, and the baffle is clamped between the mounting base and the lens and extends into the first accommodating cavity of the lens.

Further, the light source module is in a straight bar shape, and the light source plate and the lens are in a straight bar shape.

Further, the light emitting assembly includes a plurality of light emitting units, and the light emitting units are arranged at equal intervals along a longitudinal direction of the light source board.

Further, the width of the lens is not more than 32mm.

In order to achieve the above object, the present invention provides a lighting device, which includes a chassis, a mask connected to the chassis, and the light source module fixed on the chassis.

Furthermore, the face shield and the chassis are connected to form a second accommodating cavity, and the light source module is accommodated in the second accommodating cavity.

Furthermore, the chassis is rectangular, the lens is straight, and two ends of the lens are located in the middle of the lateral side wall of the chassis and extend along the longitudinal side wall of the chassis.

Further, the width of the chassis is larger than 550mm.

Further, a ratio of a width of the lens to a width of the chassis is less than 0.06.

Has the advantages that: according to the light source module and the lighting device, the lenses in the lighting device are provided with the sawtooth-shaped inner surfaces, and the superposition effect of internal reflection and refraction is comprehensively utilized, so that emergent light rays of the lighting device have larger angle distribution, and the requirement of high uniformity is met.

Drawings

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

fig. 1 is a perspective view of an illumination device provided in embodiment 1 of the present invention.

Fig. 2 is an exploded view of the lighting device shown in fig. 1.

Fig. 3 is a top view of the chassis and the light source module shown in fig. 2 after assembly.

Fig. 4 is an exploded view of a light source module in an illumination device provided in embodiment 1 of the present invention.

Fig. 5 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.

Fig. 6 is an enlarged view of the light source module in fig. 5.

Fig. 7 is a partial optical path diagram based on fig. 6.

Fig. 8 is a partially enlarged view of fig. 7.

Fig. 9 is another partial optical path diagram based on the lens of fig. 6.

Fig. 10 is a still another partial optical path diagram based on the lens of fig. 6.

Fig. 11 is a further partial optical path diagram based on fig. 6.

Fig. 12 is a cross-sectional view of a lens provided in embodiment 2 of the present invention.

Fig. 13 is an optical path diagram based on the lens of fig. 12.

Fig. 14 is a cross-sectional view of a lens provided in embodiment 3 of the present invention.

Fig. 15 is an optical path diagram of the lens of fig. 14.

Fig. 16 is a perspective view of a lens provided in embodiment 4 of the present invention.

Fig. 17 is a cross-sectional view of fig. 16.

Fig. 18 is a perspective view of a lens provided in embodiment 5 of the present invention.

FIG. 19 is a perspective view of another lens provided in embodiment 5 of the present invention.

Fig. 20 is a perspective view of a lens provided in embodiment 6 of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to be exhaustive or exhaustive. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Example 1

Fig. 1 to 4 show a lighting device 100 of the present invention, which includes a chassis 6, a mask 7 connected to the chassis 6, and a light source module 50 fixed on the chassis 6. The mask 7 and the chassis 6 are connected to form a second accommodating cavity 8, and the light source module 50 is accommodated in the second accommodating cavity 8. The light source module 50 of the embodiment of the invention can be independently applied to lamps such as a ceiling lamp or an advertising lamp box.

The following is a detailed description of each element and the connection relationship between the elements in the lighting device 100 provided in embodiment 1 of the present invention.

As shown in fig. 1 to 3, the chassis 6 has a substantially rectangular parallelepiped shape, and includes a flat plate-like bottom plate 61 and side walls 62 extending perpendicularly from the periphery of the bottom plate 61. The width of the chassis 6 is more than 550mm, and metal materials, plastics, heat conducting plastics and the like can be adopted. The chassis 6 may be mounted on a ceiling or the like mounting base.

The face mask 7 covers one side of the chassis 6 and has an outer surface with a certain curvature, in other alternative embodiments, the outer surface of the face mask 7 may also be flat. The mask 7 is made of a transparent material, such as acrylic, and has a light-homogenizing effect. The connection between the face mask 7 and the chassis 6 can adopt the modes of splicing, clamping, screw connection and the like. In other alternative embodiments, the face mask 7 may not be included in the lighting device 100.

As shown in fig. 4 to 6, the light source module 50 includes a mounting base 5, a lens 1 mounted on the mounting base 5, a baffle 4 mounted at two ends of the lens 1, and a light emitting component 3 accommodated in the lens 1, wherein the lens 1 completely covers the mounting base 5, so that the light emitting component 3 is sandwiched between the lens 1 and the mounting base 5. In this embodiment, the light source modules 50 are arranged in a group, and both ends of each group are located at the middle position of the lateral side wall of the chassis 6 and extend along the longitudinal direction of the longitudinal side wall of the chassis 6, and the length of each group of light source modules 50 is equal to the longitudinal length of the chassis 6. In other alternative embodiments, the length of the light source module 50 may also be 1/2, 2/3, etc. of the length of the chassis 6.

The mounting base 5 is in a strip shape, and the bottom surface of the mounting base is attached to the chassis 6, in this embodiment, the mounting base 5 is made of aluminum profile or other materials with good heat dissipation performance. The mounting base 5 has a rectangular flat plate-like base portion 51 and a pair of mounting portions 52 formed by bending and extending from both sides of the long side of the base portion 51 in the direction of the lens 1 for mounting the lens 1, and the mounting portions 52 extend to each other and partially overlap the base portion 51. The mounting portion 52 includes a connecting portion 521 extending perpendicularly from a side edge and a clamping portion 522 extending obliquely from the connecting portion 521, the clamping portion 522 extends toward the base portion 51 to form a plurality of ribs 523 arranged at intervals, the base portion 51 and the mounting portion 52 form a mounting area 524 for clamping and fixing the lens 1, and a plurality of first mounting holes 511 are formed in a portion of the base portion 51 located in the mounting area 524. In other alternative embodiments, the lens 1 may be mounted directly on the chassis 6 without the mounting base 5. In the present embodiment, a plurality of straight lenses 1 are mounted in the mounting base 5, and the plurality of lenses 1 abut end to end. In other embodiments, only one straight-bar-shaped lens 1 may be mounted.

The light emitting assembly 3 is fixed on the base 51 of the mounting base 5, and includes an elongated integrated light source board 31 and a plurality of light emitting units 32 arranged on the light source board 31 along the longitudinal direction. The light source plate 31 is in a long strip shape, a plurality of grooves 311 for snap-fit connection with the lens 1 are formed on two sides of the light source plate 31, and a plurality of light emitting units 32 are arranged in a row along the longitudinal direction of the light source plate 31. The surface of the light source board 31 on the side where the light emitting unit 32 is not provided is attached to the mounting base 5. In the present embodiment, the light source plate 31 is integrated, and the light emitting unit 32 is an LED light source. In other embodiments, the light source board 31 may also be segmented, and the light emitting unit 32 may also be a TL light source or other light sources. The drive power supply unit (not shown) may be provided separately from the light emitting unit 3 or may be provided integrally therewith.

The lens 1 is in a linear shape and is formed by integrally stretching, the lens 1 is provided with a main body part 14 formed by stretching along the longitudinal direction, the width of the main body part 14 is less than 32mm, and a first accommodating cavity 2 is arranged in the main body part 14. A plurality of connecting portions 15 provided with second mounting holes 151 are provided at intervals and protruding outward in the longitudinal direction on both sides of the lowermost end of the main body portion 14 of the lens 1. The lens 1 is removably mounted on the mount base 5 in the longitudinal direction, the connecting portion 15 is removably housed in the holding portion 522, and the lens 1 is fixed to the chassis 6 together with the mount base 5 by passing screws (not shown) through the chassis 6, the first mounting hole 511 of the mount base 5, and the second mounting hole 151 of the connecting portion 15. The baffle 4 seals the first accommodating cavity 2 of the lens 1 and is assembled on the mounting base 5, the baffle 4 is attached to the end surface of the lens 1, one side of the baffle 4 facing the lens 1 and the mounting base 5 is vertically extended from the end surface thereof to be provided with a plurality of elastic clamping parts 41, the elastic clamping parts 41 are simultaneously clamped with the lens 1 and the mounting part 52 of the mounting base 5, and one pair of elastic clamping parts 41 is clamped in the first accommodating cavity 2 of the lens 1. The baffle 4 is made of opaque material and is disposed at two ends of the lens 1 to prevent the light emitting component 3 from being emitted from two ends of the lens 1 to cause light loss.

The lens 1 has an axisymmetric structure, and has a longitudinal direction 30 extending in a direction perpendicular to the longitudinal direction 30, a lateral direction 20, and a central axis 10 orthogonal to the lateral direction 20 and the longitudinal direction 30. The cross-sections of the lenses 1 in the longitudinal direction 30 are all the same.

As shown in fig. 6, the lens 1 has an inner surface 11, an outer surface 12, a bottom surface 13, and a first housing cavity 2 for housing the light emitting element 3, and a wall surface of the first housing cavity 2 is defined by the inner surface 11 of the lens 1 and a bottom surface of the mounting base 5.

The cross section of the inner surface 11 is zigzag, and includes a first light incident surface 111 protruding toward the first receiving cavity 2, a pair of first tooth angles 110 and a pair of second tooth angles 110' extending into the first receiving cavity 2, the pair of first tooth angles 110 and the pair of second tooth angles 110' are respectively symmetrically arranged according to the central axis 10, and the tip of the second tooth angle 110' is closer to the bottom surface 13 than the tip of the first tooth angle 110. The pair of first tooth angles 110 includes a second incident surface 112 and a bottom surface 115, the second tooth angles 110' include a third incident surface 113 and two reflecting surfaces 114, the third incident surface 113 and the two reflecting surfaces 114 are disposed opposite to each other, the second incident surface 112 is adjacent to the first incident surface 111, the adjacent surfaces of the reflecting surfaces 114 are respectively the third incident surface 113 and the side wall surface 116, and the reflecting surface 114 is a bottom wall surface of the first accommodating cavity 2. In the present embodiment, the first light incident surface 111 is a curved surface, the second light incident surface 112 and the third light incident surface 113 are flat surfaces, and the reflective surface 114 is a curved surface and protrudes outward. In other embodiments, the three light incident surfaces may be curved surfaces or flat surfaces. The reflecting surface 114 may be a curved surface or a flat surface, and the reflecting surface 114 is a total internal reflecting surface.

As shown in fig. 7 and 8, the outer surface 12 includes first light emitting surfaces 121 located in the middle top region and opposite to each other, second light emitting surfaces 122 located at two sides of the two first light emitting surfaces 121 and intersecting the adjacent first light emitting surfaces 121 respectively, and third light emitting surfaces 123 extending from the second light emitting surfaces 122 to the bottom surface 13, the two first light emitting surfaces 121 are symmetrical about the central axis 10 and have a V-shaped structure, and an arc chamfer, i.e., an R-angle, is formed at the intersection of the two first light emitting surfaces 121. The first light emitting surface 121 may be a curved surface or a plane surface. The second light emitting surface 122 is a plane, and may be parallel to the central axis 10 or have a certain slope. The third light emitting surface 123 is a curved surface protruding in a direction away from the first receiving cavity 2.

The first receiving cavity 2 includes a first receiving region 21 and a second receiving region 22, the first receiving region 21 is defined by a first light incident surface 111, a second light incident surface 112, a bottom surface 115 and a third light incident surface 113, and the second receiving region 22 is defined by a reflecting surface 114 and a sidewall surface 116. The first housing area 21 houses the light emitting unit 32, and the second housing area 22 houses the light source board 31, but in other embodiments, the light emitting elements 3 may be disposed in the first housing area 21. The second tooth angle 110' is closer to the light source board than the first tooth angle 110.

The lens 1 further includes a pair of columns 131, which are formed by the sidewall surface 116, the portion of the outer surface corresponding to the sidewall surface 116, and the bottom surface 13, and in this embodiment, the connecting portion 15 extends from the lower end of the column 131 to the outside.

As shown in fig. 9, the light rays incident on the R angle are collimated and refracted by the R angle and then exit; specifically, a part of the light directly incident on the first light incident surface 111 is reflected to the second light emitting surface 122 through the first light emitting surface 121 and is refracted by the second light emitting surface 122 and then emitted, and another part of the light is directly emitted through the first light emitting surface 121. The outer surface of the first light emitting surface 121 may be lightly frosted, so that the part of the light directly emitted from the first light emitting surface 121 is refracted and then emitted or directly transmitted. As shown in fig. 10, the light directly incident on the second light incident surface 112 is refracted to the third light emitting surface 123 and then emitted after being refracted by the third light emitting surface 123. As shown in fig. 11, the light incident on the third light incident surface 113 is collimated and reflected by the reflecting surface 114 to the third light emitting surface 123 for being refracted and emitted. According to the illumination device provided by the embodiment of the invention, due to the design of the zigzag incident structure on the inner surface of the lens in the illumination device and the design of the emergent mode of combining the refraction and reflection surfaces on the outer surface, the emergent light of the illumination device has a large covering angle, and the energy of different stages is respectively emitted to the target position by utilizing the design of the light path in a sectional type, so that the effect of increasing the emergent light uniformity is achieved by superposition. Lens 1 that the width is less than 32mm just can make the even light-emitting of lighting device 100 that the width is greater than 550mm, that is to say, under the condition that the width ratio of lens 1 and chassis 6 is less than 0.06, the light-emitting angle of lens 1 all is enough to make whole lighting device 100 even light-emitting, through less quantity lens, realizes the even area of shining of bigger volume lamps and lanterns, the cost is reduced.

Example 2

Referring to fig. 12, embodiment 2 of the present invention provides a lens 1a applied to the lighting device 100 provided in embodiment 1 of the present invention, wherein the lens 1a has a linear structure similar to the structure of the lens 1 of embodiment 1, and the cross section thereof has an axisymmetric structure with respect to the central axis 10. The lens 1a has an inner surface 11, an outer surface 12, a bottom surface 13, and a first housing cavity 2 for housing a light emitting element (not shown), and the wall surface of the first housing cavity 2 is the inner surface 11 of the lens 1 a. In the present embodiment, the first receiving cavity 2 includes a first receiving area 21 and a second receiving area 22, the first receiving area 21 receives a light emitting device (not shown), and the second receiving area 22 receives a light source board (not shown), and in other embodiments, the light emitting device (not shown) may be disposed in the first receiving area 21.

The cross section of the inner surface 11 is zigzag, and includes a first light incident surface 111 protruding toward the first receiving cavity 2, a pair of first tooth angles 110 and a pair of second tooth angles 110 'extending into the first receiving cavity 2, and the pair of first tooth angles 110 and the pair of second tooth angles 110' are respectively arranged symmetrically with respect to the central axis 10. The pair of first tooth angles 110 includes second light incident surfaces 112 disposed oppositely, the pair of second tooth angles 110' includes third light incident surfaces 113 disposed oppositely, and the second light incident surfaces 112 are adjacent to the first light incident surfaces 111. In the present embodiment, the first light incident surface 111 is a curved surface and protrudes toward the first receiving area 21, and the second light incident surface 112 and the third light incident surface 113 are flat surfaces. In other embodiments, all three light incident surfaces may be curved surfaces or flat surfaces.

The outer surface 12 is an axisymmetric structure, and includes first light emitting surfaces 121 located in a middle top region and opposite to each other, second light emitting surfaces 122 located at two sides of the two first light emitting surfaces 121 and intersecting with the adjacent first light emitting surfaces 121, and third light emitting surfaces 123 extending from the second light emitting surfaces 122 to the bottom surface 13, where the two first light emitting surfaces 121 are symmetric about the central axis 10 and have a V-shaped structure. The first light emitting surface 121 may be a curved surface or a plane surface. The second light emitting surface 122 is a plane, and may be parallel to the central axis 10 or have a certain slope. The third light emitting surface 123 is a curved surface protruding in a direction away from the first receiving cavity 2.

Referring to fig. 13, the lens 1 accommodates the light emitting element 3, and the light emitting element 3 is provided with a light emitting unit 32. The light directly incident on the first light incident surface 111 is reflected to the second light emitting surface 122 through the first light emitting surface 121 and is refracted by the second light emitting surface 122 for emitting; the light rays directly incident on the second light incident surface 112 are refracted to the third light emitting surface 123 and are refracted by the third light emitting surface 123 and then emitted; the light rays incident on the third light incident surface 113 are collimated, refracted to the third light emitting surface 123, and then emitted. Under the condition that the middle top area of the lens 1 needs to emit light, the first light emitting surface 121 may be processed, so that the light incident on the first light emitting surface 121 is partially reflected, partially refracted, and partially directly transmitted out. For example, an R-angle is formed at the intersection of the two first light emitting surfaces 121, and the outer surface of the first light emitting surface 121 is lightly frosted, so that the part of the light emitted directly from the first light emitting surface 121 is refracted and then emitted or directly transmitted, and the area above the first light emitting surface 121 is also covered by the light (not shown).

Example 3

Referring to fig. 14, embodiment 3 of the present invention provides a lens 1b applied to the lighting device 100 provided in embodiment 1 of the present invention, the lens 1b is similar to the lens 1 of embodiment 1 in structure, and is also linear, and the cross section thereof is also symmetrical about the central axis 10. The lens 1b has an inner surface 11, an outer surface 12, a bottom surface 13, and a first cavity 2 for accommodating a light emitting device (not shown), and the wall surface of the first cavity 2 is the inner surface 11 of the lens 1 b. In the present embodiment, the first receiving cavity 2 includes a first receiving area 21 and a second receiving area 22, the first receiving area 21 receives the light emitting elements (not shown), the second receiving area 22 receives the light source plate (not shown), and in other embodiments, the light emitting elements may be disposed in the first receiving area 21.

The inner surface 11 includes a first light incident surface 111 protruding toward the first receiving cavity 2, and a pair of first tooth angles 110 located on both sides of the central region and symmetrically arranged according to the central axis 10. The pair of first tooth angles 110 includes oppositely disposed second light incident surfaces 112, and the second light incident surfaces 112 are adjacent to the first light incident surface 111. In the present embodiment, the first light incident surface 111 is a curved surface and protrudes outward, the second light incident surface 112 is a curved surface and is recessed inward, and the second light incident surface 112 is recessed such that the light refracted by the light incident surface 112 can be condensed obliquely upward.

Referring to fig. 15, the lens 1 accommodates the light emitting element 3 therein, and the light emitting element 3 is provided with a light emitting unit 32. The light directly incident on the first light incident surface 111 is reflected to the second light emitting surface 122 through the first light emitting surface 121 and is refracted by the second light emitting surface 122 for emitting; the light directly incident on the second light incident surface 112 is refracted to the third light emitting surface 123 and then emitted after being refracted by the third light emitting surface 123. Under the condition that the middle top area of the lens 1 needs to emit light, the first light emitting surface 121 may be processed, so that the light incident on the first light emitting surface 121 is partially reflected, partially refracted, and partially directly transmitted out. For example, an R-angle is formed at the intersection of the two first light emitting surfaces 121, and the outer surface of the first light emitting surface 121 is lightly frosted, so that the part of the light emitted directly from the first light emitting surface 121 is refracted and then emitted or directly transmitted, and the area above the first light emitting surface 121 is also covered by the light (not shown).

Example 4

Referring to fig. 16 and 17, embodiment 4 of the present invention provides a lens 1c applicable to the lighting device 100 provided in embodiment 1 of the present invention, wherein the lens 1c is in a circular cap shape and has an axially rotational symmetric structure with respect to the central axis 10. The lens 1c has a first housing cavity 2 for housing a light emitting element (not shown), and a wall surface of the first housing cavity 2 is an inner surface 11 of the lens 1.

The shape of the inner surface 11 may be any of the shapes described in embodiments 1 to 3 above.

Example 5

Referring to fig. 18, an annular lens 1d applicable to the lighting device 100 according to embodiment 1 of the present invention is provided in embodiment 5 of the present invention, and referring to fig. 19, a semicircular lens 1e applicable to the lighting device 100 according to embodiment 1 of the present invention is provided in embodiment 5 of the present invention. The lenses 1d and 1e each have a first receiving cavity (not shown) for receiving a light emitting device (not shown), and the wall surfaces thereof are inner surfaces (not shown) of the lenses 1d and 1e, respectively.

The shape of the inner surface thereof may be any of the shapes described in embodiments 1 to 3 above.

Example 6

Referring to fig. 20, a lens 1f applicable to the lighting device 100 provided in embodiment 1 of the present invention is curved in embodiment 6 of the present invention. The lens 1f has a first receiving cavity (not shown) for receiving a light emitting device (not shown), and a wall surface thereof is an inner surface (not shown) of the lens 1 f.

The lens in the above 6 embodiments has the structure design of the incident surface with the sawtooth-shaped inner surface and the structure design of the emergent surface with the combination of the reflecting surface and the refracting surface on the outer surface, so that the emergent light coverage angle is large, and the energy of different stages is respectively emitted to the target position by utilizing the design of the light path sectional type, and the effect of increasing the emergent light uniformity is achieved by superposition.

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

Claims

1. A light source module, comprising:

the cross section of the inner surface is in a sawtooth shape and comprises at least three light incident surfaces including a first light incident surface, a second light incident surface and a third light incident surface,

wherein, a part of the light entering the lens from the first light incident surface is reflected to the second light emergent surface by the first light emergent surface and is refracted by the second light emergent surface, and the other part of the light is directly emitted from the first light emergent surface,

the light rays entering the lens from the second light incident surface and the third light incident surface are refracted to the third light emitting surface and are emitted after being refracted by the third light emitting surface;

the inner surface comprises a first light incident surface protruding towards the first accommodating cavity and at least two pairs of tooth angles extending into the first accommodating cavity, wherein the first pair of tooth angles comprises a second light incident surface arranged oppositely, the second pair of tooth angles comprises a third light incident surface arranged oppositely, the second pair of tooth angles further comprises a bottom wall surface serving as an adjacent surface of the third light incident surface, the bottom wall surface is a reflecting surface, light rays entering the lens from the third light incident surface are refracted to the reflecting surface, reflected to the third light emitting surface through the reflecting surface and then refracted by the third light emitting surface to be emitted.

2. The light source module as claimed in claim 1, wherein the lens has an axisymmetric structure,

3. The light source module as claimed in claim 1, wherein the tip of the second pair of tooth angles is closer to the bottom surface than the tip of the first pair of tooth angles.

4. The light source module as set forth in claim 1, wherein the inner surface further comprises a pair of side wall surfaces adjacent to the bottom wall surface.

5. The light source module according to claim 4, wherein the bottom wall surface and the side wall surface define a receiving area.

6. The light source module as claimed in claim 4, wherein the lens further comprises a pair of pillars, and the pillars are formed by the sidewall surfaces, the portions of the outer surfaces corresponding to the sidewall surfaces, and the bottom surfaces.

7. The light source module of claim 4, wherein another part of the light emitted directly from the first light-emitting surface is refracted and then emitted or directly transmitted.

8. The light source module of claim 4, wherein the bottom wall is curved and is a total internal reflection surface.

9. The light source module as claimed in claim 1, wherein the second light incident surface is adjacent to the first light incident surface, the first light incident surface is a curved surface, and the second light incident surface and the third light incident surface are planes.

10. The light source module of claim 1, wherein the lens is a linear or curved axisymmetric structure extending in a longitudinal direction and in a transverse direction perpendicular to the longitudinal direction, and has a central axis orthogonal to the transverse direction and the longitudinal direction, and the cross section of the lens is the same at each point in the longitudinal direction.

11. The light source module as claimed in claim 1, wherein the lens has an axial rotation symmetry structure.

12. The light source module of claim 1, further comprising a mounting base disposed below the lens.

13. The light source module as claimed in claim 12, wherein the lens is removably assembled to the mounting base along a longitudinal direction.

14. The light source module of claim 12, wherein the mounting base has a clamping portion, and the lens has an extended connecting portion removably received in the clamping portion.

15. The light source module of claim 12, wherein a surface of the light source board not provided with the light emitting unit is attached to the mounting base.

16. The light source module of claim 12, further comprising a baffle disposed at two ends of the lens and assembled to the mounting base, wherein the baffle closes the first receiving cavity of the lens.

17. The light source module as claimed in claim 16, wherein the baffle is attached to the end surface of the lens and has at least a pair of retaining portions extending from the end surface, and the baffle is retained between the mounting base and the lens and extends into the first receiving cavity of the lens.

18. The light source module of claim 1, wherein the light source module is a straight bar, and the light source board and the lens are both straight bars.

19. The light source module of claim 1, wherein the light emitting assembly comprises a plurality of light emitting units, and the light emitting units are arranged at equal intervals along the longitudinal direction of the light source board.

20. The light source module of claim 1, wherein the width of the lens is not greater than 32mm.

21. A lighting device comprising a chassis, a cover coupled to the chassis, and the light source module of any one of claims 1-20 secured to the chassis.

22. A lighting device as recited in claim 21, wherein said cover and said base are connected to form a second cavity, and said light source module is received in said second cavity.

23. A lighting device as recited in claim 21, wherein said base pan is rectangular and said lens is substantially straight, said lens being disposed at a central portion of a lateral side wall of said base pan and extending in a direction along a longitudinal side wall of said base pan.

24. A lighting device as recited in claim 23, wherein the width of said chassis is greater than 550mm.

25. A lighting device as recited in claim 21, wherein the ratio of the width of said lens to the width of said base pan is less than 0.06.