CN111998309A - Light distribution element, light source module and lighting device - Google Patents
Light distribution element, light source module and lighting device Download PDFInfo
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- CN111998309A CN111998309A CN202010920890.3A CN202010920890A CN111998309A CN 111998309 A CN111998309 A CN 111998309A CN 202010920890 A CN202010920890 A CN 202010920890A CN 111998309 A CN111998309 A CN 111998309A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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Abstract
The invention discloses a light distribution element, a light source module and an illuminating device, and relates to the technical field of illumination. The light distribution element comprises a first light distribution area and a second light distribution area, wherein a first cross section from the first light incident surface to the first light emergent surface on the first light distribution area is different from a second cross section from the second light incident surface to the second light emergent surface on the second light distribution area, so that the light distribution effects of the first light distribution area and the second light distribution area on the same light source are different, the different light distribution effects can be realized by using the same light distribution element, and the universality of the light distribution element is improved.
Description
Technical Field
The invention relates to the technical field of illumination, in particular to a light distribution element, a light source module and an illuminating device.
Background
In the illumination device, a light distribution element such as a reflector which is fitted to the light source determines a light distribution effect such as an emission angle or a deflection angle of light emitted from the illumination device without changing the light source. If the light distribution effect of emergent light of the lighting device needs to be changed, the structure of the light distribution element is often needed to be changed.
Therefore, in order to realize different light distribution effects, a plurality of light distribution elements with different structures need to be manufactured, and the universality of the light distribution elements is poor.
Disclosure of Invention
The invention provides a light distribution element, a light source module and a lighting device, and aims to solve the problem that the universality of the light distribution element is poor.
The invention provides a light distribution element, comprising: the light distribution structure comprises a first light distribution area and a second light distribution area, wherein the first light distribution area comprises a first light incident surface and a first light emergent surface, the second light distribution area comprises a second light incident surface and a second light emergent surface, and a first cross section from the first light incident surface to the first light emergent surface is different from a second cross section from the second light incident surface to the second light emergent surface.
In the light distribution element, the degree of curvature of the first light incident surface in the first cross-sectional direction is greater than the degree of curvature of the second light incident surface in the second cross-sectional direction;
and/or
The degree of curvature of the first light exit surface in the first cross-sectional direction is greater than the degree of curvature of the second light exit surface in the second cross-sectional direction.
In the light distribution element, the first light distribution region includes the first middle portion and the first edge portion, the first middle portion is far away from the second light distribution region, the first edge portion is close to the second light distribution region, and the degree of curvature of the first light incident surface and/or the first light emitting surface along the first cross-sectional direction gradually decreases from the first middle portion to the first edge portion;
and/or
The second light distribution region comprises a second middle portion and a second edge portion, the second middle portion is far away from the first light distribution region, the second edge portion is close to the first light distribution region, and the bending degree of the second light incident surface and/or the second light emitting surface is gradually increased along the second cross section direction from the second middle portion to the second edge portion.
In the light distribution element, the bending degree of the adjacent position of the first light incident surface and the second light incident surface is in gradual transition;
and/or
The bending degree of the adjacent part of the first light-emitting surface and the second light-emitting surface is in gentle transition.
In the light distribution element, the number of the first light distribution areas is at least two, the number of the second light distribution areas is at least two, and the first light distribution areas and the second light distribution areas are alternately arranged on the light distribution element.
In the light distribution element, the light distribution element is in a centrosymmetric structure;
and/or
The light distribution element is in an axisymmetric structure.
In the light distribution element, the number of the first light distribution areas is equal to the number of the second light distribution areas.
In the light distribution element, the first light distribution area has a first light source cavity, and the first light source cavity is close to the first light incident surface and is far away from the first light emergent surface; the second light distribution area is provided with a second light source cavity, and the second light source cavity is close to the second light incoming surface and is far away from the second light outgoing surface.
In the light distribution element, the first light source cavity and the second light source cavity are communicated with each other along the direction from the first light distribution area to the second light distribution area.
The light distribution element further comprises an installation part, the installation part is provided with a first installation surface, the plane of the first installation surface is perpendicular to the direction from the first light incident surface to the first light emergent surface, and the first installation surface is close to the first light incident surface and far away from the first light emergent surface.
In the light distribution element, the mounting portion is disposed on the inner periphery or the outer periphery of the first light distribution area and the second light distribution area.
In the light distribution element, an orthographic projection of the first light distribution area on the first mounting surface is arc-shaped, an orthographic projection of the second light distribution area on the first mounting surface is arc-shaped, and orthographic projections of all the first light distribution areas and all the second light distribution areas on the first mounting surface are circular.
In the light distribution element, the mounting portion is provided with a first positioning hole, and the first positioning hole is perpendicular to the first mounting surface; and/or, the mounting part is provided with a positioning column, and the positioning column is perpendicular to the first mounting surface and extends towards the direction deviating from the first light-emitting surface.
In the light distribution element, the light distribution element is a lens; the first light distribution area converges or diffuses light; and/or the second light distribution area concentrates or diffuses light.
The invention provides a light source module, comprising: the light distribution element comprises a light source substrate and a light distribution element, and the light distribution element covers the light distribution element.
In the light source module, the number of the first light distribution areas is at least two, the number of the second light distribution areas is at least two, and the first light distribution areas and the second light distribution areas are uniformly and alternately arranged on the light distribution element;
the number of the groups of the light-emitting elements is equal to the number of the segments of the first light distribution area or equal to the number of the segments of the second light distribution area, and the light-emitting elements are uniformly and dispersedly arranged on the light source substrate according to the groups.
In the light source module, the light distribution element further includes a mounting portion, the mounting portion has a first mounting surface, and a plane of the first mounting surface is perpendicular to a direction from the first light incident surface to the first light emitting surface;
the light source substrate is provided with a second mounting surface, and the second mounting surface is provided with the light-emitting element and is attached to the first mounting surface.
In the light source module, an orthographic projection of the first light distribution area on the first mounting surface is arc-shaped, an orthographic projection of the second light distribution area on the first mounting surface is arc-shaped, and orthographic projections of all the first light distribution areas and all the second light distribution areas on the first mounting surface are circular;
the orthographic projection of the connecting line of each group of the light-emitting elements on the first mounting surface is arc-shaped, and the orthographic projection of the connecting line of all the groups of the light-emitting elements on the first mounting surface is circular.
In the light source module, the first mounting surface is circular, the second mounting surface is circular or circular, and the circle centers of the first mounting surface and the second mounting surface are aligned.
In the light source module, the mounting part is provided with the positioning columns, and the positioning columns are perpendicular to the first mounting surface and are in central symmetry on the first mounting surface; the light source substrate is provided with a first group of second positioning holes and a second group of second positioning holes, the first group of second positioning holes and the second group of second positioning holes are perpendicular to the second mounting surface, the first group of second positioning holes and the second group of second positioning holes are arranged on the second mounting surface in a central symmetry mode, and any one second positioning hole in each group of second positioning holes is matched and aligned with the positioning column;
and/or
The mounting part is provided with a first positioning hole which is perpendicular to the first mounting surface and is centrosymmetric on the first mounting surface; the light source substrate is provided with a first group of mounting holes and a second group of mounting holes, the first group of mounting holes and the second group of mounting holes are perpendicular to the second mounting surface, the first group of mounting holes and the second group of mounting holes are arranged on the second mounting surface in a centrosymmetric mode, and any one mounting hole in each group of mounting holes is matched and aligned with the first positioning hole.
In the light source module, the arc center angle of any one group of the second positioning holes on the second mounting surface is smaller than or equal to the arc center angle of a single section of the first light distribution area or a single section of the second light distribution area on the second mounting surface;
and/or
The arc center angle corresponding to any group of light-emitting elements on the second mounting surface is smaller than or equal to the arc center angle corresponding to the single section of the first light distribution area or the single section of the second light distribution area on the second mounting surface.
In any group of the second positioning holes of the light source module, the arc lengths between the second positioning holes are equal or the arc center angles corresponding to the arc lengths are equal;
and/or
In any group of the mounting holes, the arc length between the mounting holes is equal or the arc center angles corresponding to the arc lengths are equal.
The invention provides a lighting device which comprises a rear shell and the light source module.
The light distribution element provided by the invention comprises a first light distribution area and a second light distribution area, wherein a first cross section from a first light incident surface to a first light emergent surface on the first light distribution area is different from a second cross section from a second light incident surface to a second light emergent surface on the second light distribution area, so that the first light distribution area and the second light distribution area have different light distribution effects on the same light source, the same light distribution element is utilized to realize different light distribution effects, and the universality of the light distribution element is improved.
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 schematic structural view of a light distribution element in embodiment 1 of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a sectional view taken along line A-A of FIG. 1;
FIG. 4 is a sectional view taken along line B-B of FIG. 1;
FIG. 5 is a sectional view taken along line C-C of FIG. 1;
fig. 6 is a schematic structural view illustrating a light emitting module of embodiment 2 of the present invention mounted on a lighting device of embodiment 3;
fig. 7 is an exploded view of the second mounting surface of the light source substrate in fig. 6;
fig. 8 is a sectional view of fig. 6.
Reference numerals:
100-a light distribution element;
10-a first light distribution area; 11-a first light incident surface; 12-a first light-emitting surface; 13-a first middle section; 14-a first edge portion; 15-a first light source cavity;
20-a second light distribution area; 21-a second light incident surface; 22-a second light-emitting surface; 23-a second middle portion; 24-a second edge portion; 25-a second light source cavity;
30-a mounting portion; 31-a first mounting surface; 32-a first locating hole; 33-a positioning column;
200-a light source module;
40-a light emitting component; 41-a light source substrate; 411-a second mounting surface; 412-a second locating hole; 413-mounting holes; 414-fixed orifices; 42-a light emitting element; 50-first fastener
300-a lighting device; 60-rear shell; 61-a module accommodating chamber; 62-a threaded hole; 70-second fastener.
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 described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
Example 1
As shown in fig. 1 to 5, the embodiment of the invention provides a light distribution assembly for improving a light distribution path for a light source. This light distribution element 100 includes first light distribution area 10 and second light distribution area 20, first light distribution area 10 includes first income plain noodles 11 and first play plain noodles 12, second light distribution area 20 includes second income plain noodles 21 and second play plain noodles 22, the first cross section along first income plain noodles 11 to first play plain noodles 12 on first light distribution area 10 is different from the second cross section along second income plain noodles 21 to second play plain noodles 22 on second light distribution area 20 to make first light distribution area 10 and second light distribution area 20 different to the light distribution effect of same light source, and then realize utilizing same light distribution element 100 to realize different light distribution effects, the commonality of light distribution element 100 has been improved.
In the embodiment of the present invention, in order to achieve different light distribution effects, the bending degree of the first light incident surface 11 along the first cross-sectional direction is greater than the bending degree of the second light incident surface 21 along the second cross-sectional direction, at this time, the bending degrees of the first light emitting surface 12 and the second light emitting surface 22 may be the same, or the bending degree of the first light emitting surface 12 is greater than the bending degree of the second light emitting surface 22, so that the refraction degree of the light ray at the first light incident surface 11 is greater than the refraction degree at the second light incident surface 21, and further, the refraction degree of the first light distribution area 10 for the same light source is greater, and the emergent light angle of the same light source corresponding to the first light distribution area 10 is different from the emergent light angle corresponding to. Similarly, the bending degree of the first light emitting surface 12 in the first cross-sectional direction may be greater than the bending degree of the second light emitting surface 22 in the second cross-sectional direction, at this time, the bending degrees of the first light incident surface 11 and the second light incident surface 21 may be the same, or the bending degree of the first light incident surface 11 is greater than the bending degree of the second light incident surface 21, so that the refraction degree of the light on the first light emitting surface 12 is greater than the refraction degree on the second light emitting surface 22, and further the refraction degree of the first light distribution area 10 for the same light source is greater, and the emergent light angle of the same light source corresponding to the first light distribution area 10 is different from the emergent light angle corresponding to the second light distribution area 20. Specifically, as is apparent from fig. 3 and 4, the first cross section of the first light distribution area 10 is significantly different from the second cross section of the second light distribution area 20, and the degree of curvature of the first light emitting surface 12 is significantly greater than that of the second light emitting surface 22.
In the embodiment of the present invention, the first light incident surface 11, the second light incident surface 21, the first light emitting surface 12, and the second light emitting surface 22 have different bending degrees on their respective cross sections to realize the adjustment of the emergent light angle. As a modification, the first light incident surface 11, the second light incident surface 21, the first light emitting surface 12, and the second light emitting surface 22 may have different polarization degrees on their respective cross sections, so that the polarization range of the first light distribution region 10 to the same light source is different from that of the second light distribution region 20. Of course, it is also possible for the first cross section to differ from the second cross section in other ways, as long as a different light distribution effect can be achieved.
In the embodiment of the present invention, the first light distribution area 10 includes a first middle portion 13 and a first edge portion 14, the first middle portion 13 is far away from the second light distribution area 20, the first edge portion 14 is close to the second light distribution area 20, and a degree of curvature of the first light incident surface 11 along the first cross-sectional direction gradually decreases from the first middle portion 13 to the first edge portion 14, or a degree of curvature of the first light emitting surface 12 gradually decreases. Therefore, the light source refracts light rays to a greater extent when approaching the first intermediate portion 13 and to a lesser extent when approaching the first edge portion 14. Specifically, the degree of curvature of the first light incident surface 11 along the first cross-sectional direction from the first middle portion 13 to the first edge portion 14 may gradually decrease at a first ratio, or the degree of curvature of the first light exiting surface 12 may gradually decrease at a second ratio. The first ratio may be equal to, or different from, the second ratio.
Similarly, the second light distribution region 20 includes a second middle portion 23 and a second edge portion 24, the second middle portion 23 is far away from the first light distribution region 10, the second edge portion 24 is close to the first light distribution region 10, and from the second middle portion 23 to the second edge portion 24, the degree of curvature of the second light incident surface 21 along the second cross-sectional direction gradually increases, or the degree of curvature of the second light emitting surface 22 gradually increases. Therefore, the light source refracts light rays to a lesser degree near the second central portion 23 and to a greater degree near the second edge portion 24. Therefore, the light source refracts light rays to a lesser degree near the second central portion 23 and to a greater degree near the second edge portion 24. Specifically, from the second middle portion 23 to the second edge portion 24, the curvature of the second light incident surface 21 along the second cross-sectional direction may gradually increase by a third ratio, or the curvature of the second light emitting surface 22 may gradually increase by a fourth ratio. The third ratio may be equal to, or not equal to, the fourth ratio. The first ratio may be equal to the third ratio or may not be equal to the third ratio; the second ratio may be equal to the fourth ratio or may not be equal to the fourth ratio.
In the embodiment of the present invention, the first light distribution area 10 and the second light distribution area 20 are disposed adjacent to each other, and in order to improve the continuity of light distribution in the first light distribution area 10 and the second light distribution area 20 and improve the utilization rate, the light source may partially correspond to the first light distribution area 10 and partially correspond to the second light distribution area 20, so that the bending degree at the adjacent position of the first light incident surface 11 and the second light incident surface 21 is gradually transited, and similarly, the bending degree at the adjacent position of the first light emitting surface 12 and the second light emitting surface 22 may also be gradually transited. Of course, as a variant, the degree of curvature of the neighborhood of the first light incident surface 11 and the second light incident surface 21 may also be abrupt, so that a step is formed at the neighborhood; the degree of curvature of the adjacent portions of the first light-emitting surface 12 and the second light-emitting surface 22 may also be abrupt, so that a step is formed at the adjacent portions.
In fact, the first light distribution area 10 and the second light distribution area 20 have no strict boundary on the light distribution element 100, in other words, there may be no physical boundary, and the embodiment of the present invention divides the light distribution element 100 into the first light distribution area 10 and the second light distribution area 20 to facilitate the description of different light distribution effects corresponding to the same light source. In fig. 2, a region surrounded by two broken lines located on the right side is the second light distribution region 20, and a region surrounded by two broken lines located on the upper left corner is the first light distribution region 10.
In practical applications, if the degree of refraction of the light source by the first light distribution area 10 and the second light distribution area 20 can be easily seen by a user in use, the degree of curvature of the first light incident surface 11 and the second light incident surface 21 can be kept constant, but the degree of curvature of the first light emitting surface 12 and the second light emitting surface 22 can be changed, so that the user can judge the influence trend on the light by the degree of curvature of the externally visible light emitting surface of the light distribution element. Of course, if the degree of the light source refraction by the first light distribution area 10 and the second light distribution area 20 is not visible to a user in use, the degree of the light source refraction by the first light exiting surface 12 and the second light exiting surface 22 may be kept constant, and the degree of the light source refraction by the first light entering surface 11 and the second light entering surface 21 may be changed.
In the embodiment of the present invention, the number of the first light distribution areas 10 is at least two, and the number of the second light distribution areas 20 is also at least two, for example, the number of the first light distribution areas 10 is three, four, or five, and the like, and the number of the second light distribution areas 20 is three, four, or five, and the like. In a special case, the number of the first light distribution areas 10 is only one, and the number of the second light distribution areas 20 can also be only one. In order to substantially unify the spot shapes of the light emitted from the light source module 200 to which the light distribution element 100 is applied, the first light distribution areas 10 and the second light distribution areas 20 are alternately provided on the light distribution element 100.
In the embodiment of the present invention, the light distribution element 100 may have a centrosymmetric structure, an axisymmetric structure, or both a centrosymmetric structure and an axisymmetric structure. Thus, the light emitted from the light source to which the light distribution element 100 can be applied can also be symmetrical. Specifically, the first light distribution area 10 may be distributed on the light distribution element 100 in a centrosymmetric manner, may be distributed in an axisymmetric manner, or may have a centrosymmetric and axisymmetric structure; the second light distribution region 20 may be distributed on the light distribution element 100 in a centrosymmetric manner, may be distributed in an axisymmetric manner, or may have both a centrosymmetric and axisymmetric structure. Of course, the light distribution element 100 may be neither centrosymmetric nor axisymmetric.
In the embodiment of the present invention, the number of the first light distribution areas 10 is equal to the number of the second light distribution areas 20, so that a certain number of light sources can be configured for the light distribution element 100, and the light sources can all correspond to the first light distribution areas 10 or the second light distribution areas 20. Of course, the number of the first light distribution areas 10 may also be different from the number of the second light distribution areas 20, subject to specific requirements.
In the embodiment of the invention, the first light distribution area 10 has a first light source cavity 15, the first light source cavity 15 is close to the first light incident surface 11, the first light emitting surface 12, the second light distribution area 20 has a second light source cavity 25, and the second light source cavity 25 is close to the second light incident surface 21 and is far away from the second light emitting surface 22. The first light source cavity 15 may house a light source and the second light source cavity 25 may house a light source. Specifically, the first light source cavity 15 and the second light source cavity 25 communicate with each other in the direction from the first light distribution area 10 to the second light distribution area 20, thereby allowing a portion of the light source to be located in the first light source cavity 15 and another portion to be located in the second light source cavity 25, and as mentioned above, the first light distribution area 10 and the second light distribution area 20 are not absolutely separated. Of course, as a variant, the first light source cavity 15 and the second light source cavity 25 may not communicate with each other, thereby significantly separating the first light distribution region 10 and the second light distribution region 20; and the disconnected part can be processed by shading.
In the embodiment of the present invention, the light distribution element 100 further includes a mounting portion 30 for mounting the light distribution element 100 to a predetermined position. The mounting portion 30 has a first mounting surface 31, and a plane of the first mounting surface 31 is perpendicular to a direction from the first light incident surface 11 to the first light emitting surface 12, in other words, the first mounting surface 31 is perpendicular to the first cross section. Of course, the plane of the first mounting surface 31 is also perpendicular to the direction from the second incident surface 21 to the second emergent surface 22, and the first mounting surface 31 is also perpendicular to the second cross section. Obviously, the first mounting surface 31 is close to the first light incident surface 11 or the second light incident surface 21 and is far from the first light emitting surface 12 or the second light emitting surface 22.
The mounting portion 30 may be provided on the outer periphery or the inner periphery of the first light distribution area 10 and the second light distribution area 20 so that the light distribution element 100 can be mounted without affecting the light distribution.
In the embodiment of the present invention, the light distribution element 100 may have a circular ring shape. Because the light distribution element 100 is circular, the extending direction of the first light distribution area 10 is arc-shaped, the extending direction of the second light distribution area 20 is also arc-shaped, and the first light distribution area 10 and the second light distribution area 20 form an annular structure. Specifically, an orthographic projection of the first light distribution area 10 on the first mounting surface 31 is arc-shaped, an orthographic projection of the second light distribution area 20 on the first mounting surface 31 is arc-shaped, and orthographic projections of all the first light distribution areas 10 and all the second light distribution areas 20 on the first mounting surface 31 are circular rings. Of course, the light distribution element 100 may be circular, triangular, square, rectangular, or bar-shaped, instead of circular. When the light distribution element 100 is circular, the mounting portion 30 is located on the periphery of the circular ring.
Specifically, the mounting portion 30 may have a first positioning hole 32, the first positioning hole 32 is perpendicular to the first mounting surface 31, and the first positioning hole 32 is disposed on the first mounting surface 31 in a central symmetry manner. The mounting portion 30 may have a positioning pillar 33, and the positioning pillar 33 is perpendicular to the first mounting surface 31 and extends toward a direction away from the first light emitting surface 12. The positioning posts 33 are arranged on the first mounting surface 31 in a central symmetry manner.
In the embodiment of the present invention, the light distribution element 100 is a lens. The light distribution lens may be a converging lens or a diffusing lens, that is, the first light distribution area 10 may be used for converging or diffusing light, and the second light distribution area 20 may be used for converging or diffusing light.
In the light distribution element 100 provided in the embodiment of the present invention, as mentioned above, the light distribution element 100 is circular, and the light distribution element 100 may be distributed in a central symmetry manner and in an axisymmetric manner, so that an arc center angle of each first light distribution area 10 on the light distribution element 100 may be equal to an arc center angle of each second light distribution area 20 on the light distribution element 100. Specifically, as shown in fig. 1 and 2, the number of the first light distribution areas 10 is four, the number of the second light distribution areas 20 is also four, and the first light distribution areas 10 and the second light distribution areas 20 are alternately arranged, so that the arc center angle of each first light distribution area 10 or each second light distribution area 20 on the light distribution element 100 is 45 degrees. Of course, as the number of the first light distribution areas 10 and the number of the second light distribution areas 20 increase, the corresponding arc center angle of each segment of the first light distribution area 10 or each segment of the second light distribution area 20 on the light distribution element 100 decreases, and vice versa. For example, if the first light distribution region 10 and the second light distribution region 20 respectively include three segments, the arc center angle of each segment of the first light distribution region 10 or each segment of the second light distribution region 20 is 60 degrees. Of course, in a special case, the light distribution element 100 may not be disposed in an axisymmetric manner, and may not be disposed in a centrosymmetric manner, and the arc center angle corresponding to the first light distribution area 10 may not be equal to the arc center angle corresponding to the second light distribution area 20, even the arc center angles corresponding to the first light distribution areas 10 in different segments are different, and the arc center angles corresponding to the second light distribution areas 20 in different segments may also be different.
In addition, on the first mounting surface 31, the positioning column 33 and the first positioning hole 32 may be located on the same circumference, that is, the distance from the center of the first mounting surface 31 to the positioning column 33 and the first positioning hole 32 is equal, so that the size of the light distribution element 100 does not need to be increased. Of course, the positioning post 33 and the first positioning hole 32 may be located on different circumferences.
In addition, fig. 3 is a sectional view in the direction a-a of fig. 2, which shows a sectional view of the second light distribution region 20, that is, a second cross section. Fig. 4 is a sectional view in the direction B-B in fig. 2, which shows a sectional view of the first light distribution region 10, that is, a first cross section.
Finally, it should be noted that, in the embodiment of the present invention, the first cross section and the second cross section are cross sections perpendicular to a physically longer extending direction, and when the light distribution element 100 is in a circular ring shape, the longer extending direction of the light distribution element 100 is a circumferential direction, so that the first cross section and the second cross section are cross sections passing through a circle center and extending in a direction from the light incident surface to the light emitting surface. And the first cross-section and the second cross-section refer to cross-sectional views, not cross-sectional views. And, in the embodiments of the present invention, vertical, parallel or symmetrical, etc. refer to substantially vertical, substantially parallel or substantially symmetrical, respectively, that is, deviations caused by machining or assembling, etc. are allowed and technical effects can still be achieved.
Example 2
An embodiment of the invention provides a light source module 200, as shown in fig. 6 to 8, including a light emitting assembly 40 and a light distribution element 100 as in embodiment 1. The light emitting module 40 includes a light source substrate 41 and a light emitting element 42, and the light distribution element 100 covers the light emitting element 42 to distribute light to the light emitting element 42.
In the embodiment of the invention, the light source module 200 includes at least two sets of light emitting elements 42, and each set of light emitting elements 42 includes at least one light emitting element 42, for example, two, three, four or more light emitting elements 42. In the light distribution element 100, the number of the first light distribution regions 10 is at least two, the number of the second light distribution regions 20 is at least two, and the first light distribution regions 10 and the second light distribution regions 20 are uniformly and alternately arranged on the light distribution element 100. Correspondingly, the light emitting elements 42 are divided into at least two groups, so that the number of the groups of the light emitting elements 42 is equal to the number of the segments of the first light distribution area 10 or equal to the number of the segments of the second light distribution area 20, and the light emitting elements 42 are arranged on the light source substrate 41 in a group-wise and dispersed manner, so that all the light emitting elements 42 can be completely corresponding to the first light distribution area 10 or completely corresponding to the second light distribution area 20, and part of the light emitting elements corresponds to the first light distribution area 10 and part of the light emitting elements corresponds to the second light distribution area 20, and the light emitting effect of the light source module 200 can be changed by changing the relative positions of the light emitting elements 40 and the light distribution elements 100. For example, the light distribution element 100 is a converging lens, when the degree of curvature of the second light incident surface 21 or the second light emitting surface 22 of the second light distribution area 20 is smaller than that of the first light incident surface 11 or the second light emitting surface 22, if all the light emitting elements 42 correspond to the second light distribution area 20, the light emitting angle of the light source module 200 is the largest, if all the light emitting elements 42 correspond to the second light distribution area 20, the light emitting angle of the light source module 200 is the smallest, and if part of the light emitting elements 42 correspond to the first light distribution area 10 and part of the light emitting elements correspond to the second light distribution area 20, the light emitting angle of the light source module 200 is between the largest and the smallest. Therefore, the higher the proportion of the light emitting elements 42 corresponding to the first light distribution region 10, the smaller the outgoing light angle, and vice versa.
As proposed in embodiment 1, the light distribution element 100 has the first mounting surface 31. In the embodiment of the present invention, the light source substrate 41 has the second mounting surface 411, and the light emitting element 42 is disposed on the second mounting surface 411 and attached to the first mounting surface 31.
The orthographic projection of the first light distribution area 10 on the first mounting surface 31 is arc-shaped, the orthographic projection of the second light distribution area 20 on the first mounting surface 31 is arc-shaped, and the orthographic projections of all the first light distribution areas 10 and all the second light distribution areas 20 on the first mounting surface 31 are circular rings. In order to enable the first light distribution area 10 and the second light distribution area 20 to distribute light for the light emitting elements 42 (the first light source cavity 15 and the second light source cavity 25 can accommodate the light emitting elements 42), an orthographic projection of a connecting line of each group of the light emitting elements 42 on the first mounting surface 31 is also arc-shaped, and orthographic projections of all the groups of the light emitting elements 42 on the first mounting surface 31 are circular. In other words, if the first light distribution region 10 and the second light distribution region 20 of the light distribution element 100 are axisymmetric and centrosymmetric, the light emitting elements 42 on the light source substrate 41 are also axisymmetrically and centrosymmetrically disposed.
In order to match the circular light distribution element 100, when the first mounting surface 31 is circular, the second mounting surface 411 on the light source substrate 41 may be circular or arc-shaped, and the centers of the first mounting surface 31 and the second mounting surface 411 are aligned.
In the embodiment of the present invention, the mounting portion 30 has a positioning column 33, and the positioning column 33 is perpendicular to the first mounting surface 31 and is centrally symmetric on the first mounting surface 31. Correspondingly, the light source substrate 41 has a first group of second positioning holes 412 and a second group of second positioning holes 412 perpendicular to the second mounting surface 411, the first group of second positioning holes 412 and the second group of second positioning holes 412 are centrally symmetrically disposed on the second mounting surface 411, and any one of the second positioning holes 412 in each group of second positioning holes 412 is aligned with the positioning pillar 33. Specifically, the number of sets of the second positioning holes 412 on the light source substrate 41 may be three, four, or more, and the number of sets of the second positioning holes 412 is the same as the number of the positioning posts 33. In a special case, there is only one positioning post 33 on the mounting portion 30, and there may be only one set of the second positioning holes 412.
The mounting portion 30 has a first positioning hole 32, and the first positioning hole 32 is perpendicular to the first mounting surface 31 and is symmetrical with the first mounting surface 31. Correspondingly, the light source substrate 41 is provided with a first group of mounting holes 413 and a second group of mounting holes 413 perpendicular to the second mounting surface 411, the first group of mounting holes 413 and the second group of mounting holes 413 are arranged on the second mounting surface 411 in a central symmetry manner, and any one mounting hole 413 in each group of mounting holes 413 is matched and aligned with the first positioning hole 32. Specifically, the number of sets of the mounting holes 413 on the light source substrate 41 may be three, four, or more, and the number of sets of the mounting holes 413 is the same as the number of the first positioning holes 32. The light source module 200 can be connected to the mounting hole 413 and the positioning hole by using a detachable or non-detachable first fastener 50, so as to realize the fastening connection between the light distribution element 100 and the light emitting assembly 40. The first fastener 50 may be a rivet or a screw, etc.
In order to fully utilize the difference of the first light distribution area 10 and the second light distribution area 20 in the light distribution element 100 in the light distribution effect, the arc center angle corresponding to any one group of the light emitting elements 42 on the second mounting surface 411 may be equal to the arc center angle corresponding to the single-segment first light distribution area 10 or the single-segment second light distribution area 20 on the second mounting surface 411. For example, in embodiment 1, if the arc center angle of each of the first light distribution areas 10 and the second light distribution areas 20 on the second mounting surface 411 is 45 degrees, the arc center angle of any one group of the light-emitting elements 42 on the second mounting surface 411 may also be 45 degrees. In practical applications, the arc center angle of any one group of light-emitting elements 42 on the second mounting surface 411 may also be smaller than the arc center angle of the single-segment first light distribution region 10 or the single-segment second light distribution region 20 on the second mounting surface 411, that is, the arc center angle of any one group of light-emitting elements 42 may be smaller than 45 degrees.
In order to effectively change the light distribution effect by changing the position of the light distribution element 100 relative to the light emitting assembly 40, the arc center angle of any one set of the second positioning holes 412 on the second mounting surface 411 may be equal to the arc center angle of a single segment of the first light distribution area 10 or a single segment of the second light distribution area 20 on the second mounting surface 411. For example, in embodiment 1, if the arc center angle of each of the first light distribution areas 10 and the second light distribution areas 20 on the second mounting surface 411 is 45 degrees, the arc center angle of any one set of the second positioning holes 412 on the second mounting surface 411 may also be 45 degrees. In practical applications, since some positions of the light distribution element 100 relative to the light emitting assembly 40 do not meet conventional light distribution requirements, the second positioning hole 412 corresponding to the positions can be omitted, that is, the arc center angle of any one second positioning hole 412 on the second mounting surface 411 is smaller than the arc center angle of a single first light distribution area 10 or a single second light distribution area 20 on the second mounting surface 411. For example, in fig. 7, an arc center angle of the single first light distribution area 10 or the single second light distribution area 20 on the second mounting surface 411 is 45 degrees, four second positioning holes are included in any one group of the second positioning holes 412, and the arc center angle of any one group of the second positioning holes 412 is smaller than 45 degrees.
As shown in fig. 7, the light emitting elements 42 are surrounded by a dashed line frame to form a group of light emitting elements 42, and it can be seen that in fig. 7, four groups of light emitting elements 42 are distributed on the second mounting surface 411 in a central symmetry manner; the mounting holes 413 are surrounded by a dashed line frame, and fig. 7 shows four groups of mounting holes 413 which are centrally and symmetrically distributed on the second mounting surface 411; one of the second positioning holes 412 is a mounting hole 413 surrounded by a dashed line, and fig. 7 shows four sets of the second positioning holes 412 symmetrically distributed on the second mounting surface 411. Correspondingly, the light distribution element 100 has 2 first positioning holes 32 and 2 positioning posts 33.
Since the arrangement of the second positioning hole 412 affects the arrangement of the mounting hole 413, similarly, for the mounting hole 413, an arc center angle corresponding to any one of the mounting holes 413 on the second mounting surface 411 may be smaller than or equal to an arc center angle corresponding to a single segment of the first light distribution area 10 or a single segment of the second light distribution area 20 on the second mounting surface 411.
In order to realize fine adjustment of the light distribution effect (such as the emergent light angle), the arrangement density of the second positioning holes 412 and the mounting holes 413 in each group can be smaller; and vice versa. Specifically, in any group of the second positioning holes 412, the arc lengths between the second positioning holes 412 are equal or the arc center angles corresponding to the arc lengths are equal; for example, the arc center angle between adjacent second positioning holes 412 is 10 degrees. Similarly, in any group of the mounting holes 413, the arc lengths between the mounting holes 413 are equal or the arc center angles corresponding to the arc lengths are equal; for example, the arc center angle between the adjacent mounting holes 413 is 10 degrees.
In the light source substrate 41 of the embodiment of the invention, the second positioning hole 412 and the mounting hole 413 may be located on the same circumference, that is, the distance from the center of the second mounting surface 411 to the second positioning hole 412 and the mounting hole 413 is equal. Of course, the second positioning hole 412 and the mounting hole 413 may not be located on the same circumference. The light source substrate 41 further includes a fixing hole 414, and compared with the second positioning hole 412 or the mounting hole 413, the fixing hole 414 is far away from the center of the second mounting surface 411, and a fastening member can be used to pass through the fixing hole 414 to mount the light source module 200 to a predetermined position.
Example 3
An embodiment of the invention provides an illumination device 300, as shown in fig. 6 to 8, the illumination device 300 includes the light source module 200 and the rear case 60 described in embodiment 2. The rear case 60 has a module receiving cavity 61 for receiving the light source module 200, and the rear case 60 has a screw hole 62 therein, the screw hole 62 is aligned with the fixing hole 414 on the light source substrate 41, and the second fastening member 70 is inserted through the fixing hole 414 and the screw hole 62 to connect the light source module 200 with the rear case 60. The second fastener 70 may be a screw or the like fastener.
Since the light distribution element 100 of embodiment 1 is used in the illumination device 300 of the embodiment of the present invention, the emission angle of the light emitted from the illumination device 300 can be changed by the light distribution element 100.
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 (23)
1. A light distribution element characterized by comprising: the light distribution structure comprises a first light distribution area and a second light distribution area, wherein the first light distribution area comprises a first light incident surface and a first light emergent surface, the second light distribution area comprises a second light incident surface and a second light emergent surface, and a first cross section from the first light incident surface to the first light emergent surface is different from a second cross section from the second light incident surface to the second light emergent surface.
2. A light distribution element according to claim 1, wherein a degree of curvature of the first light incident surface in the first cross sectional direction is larger than a degree of curvature of the second light incident surface in the second cross sectional direction;
and/or
The degree of curvature of the first light exit surface in the first cross-sectional direction is greater than the degree of curvature of the second light exit surface in the second cross-sectional direction.
3. A light distribution element as claimed in claim 1 or 2,
the first light distribution region comprises a first middle part and a first edge part, the first middle part is far away from the second light distribution region, the first edge part is close to the second light distribution region, and the bending degree of the first light incident surface and/or the first light emergent surface in the first cross section direction is gradually reduced from the first middle part to the first edge part;
and/or
The second light distribution region comprises a second middle portion and a second edge portion, the second middle portion is far away from the first light distribution region, the second edge portion is close to the first light distribution region, and the bending degree of the second light incident surface and/or the second light emitting surface is gradually increased along the second cross section direction from the second middle portion to the second edge portion.
4. A light distribution element according to claim 1, wherein the degree of curvature of the first light incident surface and the second light incident surface adjacent to each other is gradually changed;
and/or
The bending degree of the adjacent part of the first light-emitting surface and the second light-emitting surface is in gentle transition.
5. A light distribution element according to claim 1, wherein the number of the first light distribution areas is at least two, the number of the second light distribution areas is at least two, and the first light distribution areas and the second light distribution areas are alternately arranged on the light distribution element.
6. A light distribution element according to claim 1, wherein the light distribution element is a centrosymmetric structure;
and/or
The light distribution element is in an axisymmetric structure.
7. A light distribution element according to claim 1, characterized in that the number of the first light distribution areas is equal to the number of the second light distribution areas.
8. A light distribution element as claimed in claim 1, wherein the first light distribution region has a first light source cavity, the first light source cavity being close to the first light incident surface and being far from the first light exiting surface; the second light distribution area is provided with a second light source cavity, and the second light source cavity is close to the second light incoming surface and is far away from the second light outgoing surface.
9. A light distribution element according to claim 8, wherein the first light source cavity and the second light source cavity communicate with each other in a direction from the first light distribution area to the second light distribution area.
10. A light distribution element according to claim 1, wherein the light distribution element further includes a mounting portion, the mounting portion has a first mounting surface, a plane of the first mounting surface is perpendicular to a direction from the first light incident surface to the first light emitting surface, and the first mounting surface is close to the first light incident surface and is far from the first light emitting surface.
11. A light distribution element according to claim 10, wherein the mounting portion is provided at an inner periphery or an outer periphery of the first light distribution area and the second light distribution area.
12. A light distribution element according to claim 10, wherein an orthographic projection of the first light distribution area on the first mounting surface is arc-shaped, an orthographic projection of the second light distribution area on the first mounting surface is arc-shaped, and orthographic projections of all the first light distribution areas and all the second light distribution areas on the first mounting surface are circular ring-shaped.
13. A light distribution element according to claim 10, wherein the mounting portion has a first positioning hole formed therein, the first positioning hole being perpendicular to the first mounting surface; and/or, the mounting part is provided with a positioning column, and the positioning column is perpendicular to the first mounting surface and extends towards the direction deviating from the first light-emitting surface.
14. A light distribution element as claimed in claim 1, wherein the light distribution element is a lens; the first light distribution area converges or diffuses light; and/or the second light distribution area concentrates or diffuses light.
15. A light source module, comprising: the light distribution element of any one of claims 1 to 14, wherein the light emitting assembly comprises a light source substrate and a light emitting element, and the light emitting element is covered by the light distribution element.
16. The light source module according to claim 15, wherein the number of the first light distribution areas is at least two, the number of the second light distribution areas is at least two, and the first light distribution areas and the second light distribution areas are uniformly and alternately arranged on the light distribution element;
the number of the groups of the light-emitting elements is equal to the number of the segments of the first light distribution area or equal to the number of the segments of the second light distribution area, and the light-emitting elements are uniformly and dispersedly arranged on the light source substrate according to the groups.
17. The light source module according to claim 15, wherein the light distribution element further includes a mounting portion, the mounting portion has a first mounting surface, and a plane of the first mounting surface is perpendicular to a direction from the first light incident surface to the first light emitting surface;
the light source substrate is provided with a second mounting surface, and the second mounting surface is provided with the light-emitting element and is attached to the first mounting surface.
18. The light source module of claim 17, wherein an orthographic projection of the first light distribution area on the first mounting surface is arc-shaped, an orthographic projection of the second light distribution area on the first mounting surface is arc-shaped, and orthographic projections of all the first light distribution areas and all the second light distribution areas on the first mounting surface are circular ring-shaped;
the orthographic projection of the connecting line of each group of the light-emitting elements on the first mounting surface is arc-shaped, and the orthographic projection of the connecting line of all the groups of the light-emitting elements on the first mounting surface is circular.
19. The light source module of claim 17, wherein the first mounting surface is circular and the second mounting surface is circular or annular, and the centers of the first and second mounting surfaces are aligned.
20. The light source module as claimed in claim 19, wherein the mounting portion has a positioning pillar thereon, the positioning pillar is perpendicular to the first mounting surface and is symmetrical with the first mounting surface; the light source substrate is provided with a first group of second positioning holes and a second group of second positioning holes, the first group of second positioning holes and the second group of second positioning holes are perpendicular to the second mounting surface, the first group of second positioning holes and the second group of second positioning holes are arranged on the second mounting surface in a central symmetry mode, and any one second positioning hole in each group of second positioning holes is matched and aligned with the positioning column;
and/or
The mounting part is provided with a first positioning hole which is perpendicular to the first mounting surface and is centrosymmetric on the first mounting surface; the light source substrate is provided with a first group of mounting holes and a second group of mounting holes, the first group of mounting holes and the second group of mounting holes are perpendicular to the second mounting surface, the first group of mounting holes and the second group of mounting holes are arranged on the second mounting surface in a centrosymmetric mode, and any one mounting hole in each group of mounting holes is matched and aligned with the first positioning hole.
21. The light source module of claim 20, wherein an arc center angle of any one set of the second positioning holes on the second mounting surface is smaller than or equal to an arc center angle of a single segment of the first light distribution area or a single segment of the second light distribution area on the second mounting surface;
and/or
The arc center angle corresponding to any group of light-emitting elements on the second mounting surface is smaller than or equal to the arc center angle corresponding to the single section of the first light distribution area or the single section of the second light distribution area on the second mounting surface.
22. The light source module according to claim 20, wherein in any one of the second positioning holes, the arc lengths between the second positioning holes are equal or the arc center angles corresponding to the arc lengths are equal;
and/or
In any group of the mounting holes, the arc length between the mounting holes is equal or the arc center angles corresponding to the arc lengths are equal.
23. A lighting device comprising a rear housing and the light source module defined in any one of claims 15-22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010920890.3A CN111998309A (en) | 2020-09-04 | 2020-09-04 | Light distribution element, light source module and lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010920890.3A CN111998309A (en) | 2020-09-04 | 2020-09-04 | Light distribution element, light source module and lighting device |
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| Publication Number | Publication Date |
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| CN111998309A true CN111998309A (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010920890.3A Pending CN111998309A (en) | 2020-09-04 | 2020-09-04 | Light distribution element, light source module and lighting device |
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| CN (1) | CN111998309A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902112A (en) * | 2021-02-24 | 2021-06-04 | 苏州欧普照明有限公司 | Lens and lamp |
-
2020
- 2020-09-04 CN CN202010920890.3A patent/CN111998309A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902112A (en) * | 2021-02-24 | 2021-06-04 | 苏州欧普照明有限公司 | Lens and lamp |
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