CN110715268B

CN110715268B - Light distribution element and lamp

Info

Publication number: CN110715268B
Application number: CN201911084218.9A
Authority: CN
Inventors: 刘超博; 李京蔓; 高丰; 王洪波; 卫庆军
Original assignee: Opple Road Lighting Co ltd
Current assignee: Opple Road Lighting Co ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2024-08-30
Anticipated expiration: 2039-11-07
Also published as: CN110715268A

Abstract

The application discloses a light distribution element and a lamp. The luminaire comprises a plurality of sub-segments combined with each other, the plurality of sub-segments being part of a circumference, the plurality of sub-segments being movable over at least one virtual circumference. The light distribution element comprises a plurality of mutually combined subsections, which is beneficial to constructing the lamp into a special-shaped structure so as to facilitate the use of the lamp.

Description

Light distribution element and lamp

Technical Field

The application relates to the field of illumination, in particular to a light distribution element. The application also relates to a lamp comprising the light distribution element.

Background

The LED lamp has the characteristics of energy conservation, high light efficiency, rich colors, long service life and the like, and is widely promoted by consumers. In order to enable the lighting effect of the light-emitting diode lamp to meet the use requirement, a light distribution element is required to be installed on the light-emitting diode lamp.

Disclosure of Invention

The invention provides a light distribution element and a lamp comprising the same. The light distribution element comprises a plurality of mutually combined subsections, which is beneficial to constructing the lamp into a special-shaped structure so as to facilitate the use of the lamp in a special-shaped space.

The light distribution element according to the first aspect of the present invention comprises a plurality of subsections combined with each other, the plurality of subsections being part of a circumference, wherein the plurality of subsections are movable on at least one virtual circumference.

In one embodiment, the plurality of subsections are moved to form one or more virtual circumferences.

In one embodiment, the plurality of sub-segments are translationally stitched into at least one virtual circumference.

In one embodiment, the shape formed by combining the plurality of subsections with each other is a symmetrical shape.

In one embodiment, the central angles of the plurality of subsections are equal.

In one embodiment, the central angle of at least one sub-segment of the plurality of sub-segments is not equal to the central angles of the remaining sub-segments.

In one embodiment, the number of the plurality of subsections is greater than or equal to 3, and the subsections with larger central angles are distributed on the periphery of the subsections with smaller central angles.

In one embodiment, the central angle is greater than or equal to 45 degrees.

In one embodiment, the plurality of subsections are equal in diameter.

In one embodiment, in the shape formed by combining the plurality of subsections, the ratio of the center distance between the two subsections farthest from each other to the diameter of the virtual circumference is 0.5:1 to 5:1.

In one embodiment, at least one of the plurality of subsections has a diameter that is smaller than the diameter of the remaining subsections.

In one embodiment, the number of the sub-segments is 3 or more, and the sub-segments with larger diameters are distributed on the periphery of the sub-segments with smaller diameters.

In one embodiment, in the shape formed by combining the plurality of subsections, the ratio of the center distance between two subsections farthest from each other to the diameter of the virtual circumference with the largest diameter is greater than or equal to 1:1 and less than or equal to 10:1.

In one embodiment, at least one of the plurality of subsections includes a light shielding region proximate a center of the circumference and a light transmitting region radially outward of the light shielding region.

In one embodiment, a refractive pattern is configured within the light shielding region to achieve light shielding.

A luminaire according to a second aspect of the present invention comprises a plurality of luminaires arranged in correspondence with the plurality of sub-segments and a light distribution element according to the above, the luminaire further comprising a lamp plate on which the plurality of luminaires are fixed, the light distribution element being fixedly engaged with the lamp plate and covering the respective luminaires.

In one embodiment, the luminous body has a circumferential density of 2-5 per cm along the circumferential extension direction of the subsections.

Compared with the prior art, the invention has the following beneficial effects: the light distribution element comprises a plurality of mutually combined subsections, which is beneficial to constructing the lamp into a special-shaped structure so as to facilitate the use of the lamp in a special-shaped space. In addition, the lamp using the light distribution element has good lighting effect.

Drawings

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

Fig. 1 schematically shows a configuration of a light distribution element according to a first embodiment of the present invention.

Fig. 2 schematically shows a luminaire according to an embodiment of the invention.

Fig. 3a to 3g schematically show various other configurations of the light distribution element according to the invention.

Fig. 4 schematically shows a light distribution element of the prior art.

Fig. 5 schematically shows another light distribution element of the prior art.

Fig. 6a to 6j are light distribution curves of examples 1 to 8 and comparative examples 1 to 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Fig. 1 schematically shows the shape of a light distribution element 1 according to a first embodiment of the present invention. As shown in fig. 1, the light distribution element 1 includes a plurality of sub-segments 100 combined with each other, and the sub-segments 100 are each a part of a circumference. These subsections 100 can be on at least one virtual circumference 300 only by movement. In one embodiment, the subsections 100 are moved to form one or more virtual circumferences 300. In another embodiment, the subsections 100 can be on at least one virtual circumference 300 only translated, or just translated to make up one or more virtual circumferences 300. As described below.

In the present application, the term "translation" refers to moving each point of the sub-segment 100 the same distance in the same direction. It should be understood that in the present application, translation may be at least side-to-side translation, up-and-down translation, or a combination thereof. For example, the right subsection 100 is translated downward into position and then translated leftward into position. In this embodiment, the two subsections 100 may be joined by translation to form a virtual circumference 300, with the circumference angle of the virtual circumference 300 being equal to 360 degrees. It has been found that this helps to ensure the lighting effect of the luminaire 6.

Fig. 2 schematically shows a luminaire 6 according to an embodiment of the invention. The lamp 6 includes a plurality of luminous bodies 601 and the light distribution element 1 described above, the plurality of luminous bodies 601 being arranged corresponding to the plurality of subsections 100. In a specific embodiment, the luminous bodies 601 are arranged at a density of 2 to 5 per 1cm in the circumferential extension direction of the sub-segment 100, i.e. the circumferential density of the luminous bodies 601 is 2 to 5 per cm in the circumferential extension direction of the sub-segment 100.

As further shown in fig. 2, the lamp 6 further includes a lamp panel 602, and the plurality of light emitters 601 are fixed on the lamp panel 602, and the light distribution element 1 is fixedly engaged with the lamp panel 602 and covers the corresponding light emitters 601. The light plate 602 may be used to power the light 601.

It should be noted that, under the same illumination requirements, the illumination effect of the lamp 6 (shown in fig. 2) using the light distribution element 1 shown in fig. 1 is the same or almost the same as that of the lamp using a circular or annular light distribution element in general in the prior art, that is, has the same or almost the same optical characteristics. Therefore, on the premise of the same optical characteristics, the light distribution element 1 can be configured into an adaptive configuration according to the requirement, so that the structure and the size of the light distribution element and the lamp can be flexibly designed. In particular, for a luminaire 6 which needs to be mounted in a profiled space, such as an elongated space, a curved space, the light distribution element 1 of the present invention is very advantageous, since a plurality of sub-segments 100 can be combined into a light distribution element 1 of elongated or curved shape, so that the luminaire 6 can accommodate such a space.

In a preferred embodiment, the plurality of subsections 100 are formed in combination with one another to form a symmetrical shape. In this way the light distribution element 1 and the luminaire 6 can also be symmetrically shaped, which contributes to the further lighting effect of the luminaire 6. It should be understood that the symmetrical shapes described herein may be axisymmetrical or rotationally symmetrical. For example, as shown in fig. 1, the light distribution element 1 is rotationally symmetrical with a symmetry center I. It should be appreciated that the rotational symmetry described herein does not require rotation of the subsections 100 to be on the virtual circumference 300, but rather still only translation.

In other embodiments, multiple subsections 100 may also be combined with one another to form an asymmetric shape. In this case, the lighting effect of the luminaire 6 can be adjusted and/or ensured by providing different luminaries for the different subsections 100. Of course, the lighting effect of the lamp 6 may also be unregulated as desired.

In the embodiment shown in fig. 1, the light distribution element 1 is composed of two independent semicircular (i.e. 180 ° in central angle) subsections 100, which are arranged horizontally spaced apart and can form a virtual circumference 300 after only translation. The center distance D1 of the two subsections 100 is greater than the sum of the radii of the two subsections 100. Thus, the lamp 6 using such a light distribution element 1 can have an elongated shape.

In one embodiment, the central angles of the plurality of subsections 100 are equal. In this way, it is possible to easily configure the subsections 100 as a symmetrically shaped light distribution element 1, which helps to ensure the illumination effect of the luminaire 6. Preferably, the central angle is 45 degrees or more. For example, the central angle may be 45 degrees, 60 degrees, 75 degrees, 90 degrees, 120 degrees, 145 degrees, 160 degrees, 180 degrees, etc. In this way, the sub-segments 100 have a suitable circumferential length, which facilitates arranging the luminaries in correspondence of the sub-segments 100.

In one embodiment, the diameters of the plurality of subsections 100 are equal. In other words, the plurality of subsections 100 may be on the same virtual circumference only after translation, or may be spliced into one or more complete circumferences when the number of subsections 100 is sufficient. This further helps to compose the plurality of subsections 100 into a symmetrical shape. In a preferred embodiment, in a shape in which a plurality of subsections 100 are combined with each other, a ratio of a center distance D1 between two subsections 100 farthest from each other to a diameter of the virtual circumference 300 is greater than or equal to 1:1 and less than or equal to 5:1. The lamp 6 using the light distribution element 1 having such a structure of the present invention has a large aspect ratio and the lighting effect is the same or almost the same as that of the corresponding existing lamp, compared to the corresponding existing lamp having the light distribution element of the complete circumference and/or the partial circumference (for example, the light distribution element of the lamp is equivalent to that of the sub-sections 100 which are spliced after being only translated), so that the lamp 6 having the light distribution element 1 of the present invention can be completely used while facing a narrow installation space, which greatly facilitates the use.

In further embodiments, the central angle of at least one subsection 100 is not equal to the central angle of the remaining subsections 100. For example, some subsections 100 have a central angle of 45 degrees, some 90 degrees, and some 180 degrees. In other words, the circumferential length dimension of the subsections 100 is more varied, so that a larger number of combinations are possible, as are the shapes of the light distribution element 1 and the corresponding luminaire 6, which further facilitates the mounting and use of the luminaire 6. In this case, it is preferable that the number of the subsections 100 is 3 or more, and the subsections having larger central angles are distributed at the periphery of the subsections having smaller central angles. It has surprisingly been found that by means of this construction, in the luminaire 6 the subsections with the larger central angle and the subsections with the smaller central angle compensate each other in guiding the light, so that the lighting effect of the luminaire 6 can be ensured.

In another embodiment, at least one of the sub-segments has a diameter less than the diameter of the remaining sub-segments. For example, the diameter of the partial subsections is 50mm, the diameter of the partial subsections is 80mm, and the diameter of the partial subsections is 30mm. Under the condition of different central angles, the diameters of the subsections are selected to be different, so that the circumferential length sizes of the subsections are more various, more combinations can be realized, and the shapes of the light distribution element 1 and the corresponding lamp 6 can be more various, which is further helpful for mounting and using the lamp 6.

In one embodiment, in the luminaire 6, a larger number of luminaires 601 may be arranged corresponding to the larger diameter subsections, and a larger number of luminaires 601 may be arranged corresponding to the smaller diameter subsections. In this case, it is preferable that the number of the plurality of subsections is 3 or more, and the subsections having larger diameters are distributed at the periphery of the subsections having smaller diameters. In this way, in the luminaire 6, the subsections with larger diameters and the subsections with smaller diameters compensate each other in terms of light emission, so that the lighting effect of the luminaire 6 can be ensured. For example, when the smaller diameter subsections are interposed between the larger diameter subsections, since the larger diameter subsections are arranged with a larger pitch, the smaller diameter subsections can compensate for the dark area between the larger diameter subsections, so that the lighting effect of the lamp 6 can be ensured. Thus, the lamp 6 using the light distribution element 1 of the present invention can be constructed to have a larger aspect ratio and the lighting effect is the same or almost the same as the corresponding existing lamp, so that the lamp 6 using the light distribution element 1 of the present invention can be used entirely while facing a narrow installation space, which greatly facilitates use.

In the case that the diameters of the sub-segments are not identical, in the shape formed by combining the plurality of sub-segments, the ratio of the center distance between the two sub-segments farthest from each other to the diameter of the virtual circumference having the largest diameter is greater than or equal to 1:1 and less than or equal to 10:1. For example, the ratio may be 1:1, 5:1, 8:1, or 10:1. With the structure, the lamp has better illumination effect.

In one embodiment, at least one of the plurality of subsections 100 includes a light shielding region 301 and a light transmitting region 302, the light shielding region 301 being proximate the center O of the circumference, the light transmitting region 302 being radially outward of the light shielding region 301. In the lamp 6, the shading area 301 can be used to shade the interior of the lamp 6, especially components and wires arranged on the light source board, so as to improve the aesthetic property of the lamp 6. In a specific embodiment, a refractive pattern is configured within the light-shielding region 301 to achieve light shielding.

Examples

The following describes the sub-segment form of the light distribution element and the combination thereof with specific examples. In addition, the optical parameters of the lamps using these light distribution elements were also tested, see table 1.

Example 1: as shown in fig. 1, the light distribution element 1 is formed by combining two independent subsections 100 without touching each other, and the center of rotation symmetry is I. The central angles of the subsections 100 are 180 degrees, and the circumferential density of the luminous bodies of the subsections 100 is 3/cm. The two subsections 100 may be translated only to make up the virtual circumference 300. The center distance D1 between the two subsections 100 is 60mm and the diameter of the virtual circumference 300 is 50mm. The light distribution curve is shown in fig. 6 a.

Example 2: as shown in fig. 3a, the light distribution element is formed by combining two independent subsections 100 in contact and forms a general letter "S" shape, and the rotational symmetry center is Ia. The central angles of the subsections 100 are 180 degrees, and the circumferential density of the luminous bodies 601 of the subsections 100 is 3/cm. The two subsections 100 may be translated only to make up the virtual circumference 300. The center distance D1 between the two subsections 100 is 40mm and the diameter of the virtual circumference 300 is 50mm. The light distribution curve is shown in fig. 6 b.

Example 3: as shown in fig. 3b, the light distribution element is formed by combining two independent subsections 100 in contact, and the rotation symmetry center is Ib. The central angles of the subsections 100 are 180 degrees, and the circumferential density of the luminous bodies of the subsections 100 is 3/cm. The two subsections 100 may be translated only to make up the virtual circumference 300. The center distance D1 between the two subsections 100 is 30mm and the diameter of the virtual circumference 300 is 50mm. The light distribution curve is shown in fig. 6 c.

Example 4: as shown in fig. 3c, the light distribution element is formed by combining two independent subsections 100 in contact, the symmetry axis includes l1 and l2, and the symmetry center is Ic. The central angles of the subsections 100 are 180 degrees, and the circumferential density of the luminous bodies of the subsections 100 is 3/cm. The two subsections 100 may be translated only to make up the virtual circumference 300. The center distance D1 between the two subsections 100 is 50mm and the diameter of the virtual circumference 300 is 50mm. The light distribution curve is shown in fig. 6 d.

Example 5: as shown in fig. 3d, the light distribution element is formed by combining four independent subsections 100 in contact, and the symmetry axis is l8. The central angles of the four subsections 100 are all 90 degrees, and the circumferential density of the luminous bodies of the subsections 100 is 3/cm. These subsections 100 may constitute a virtual circumference 300 via only translation. The center distance D1 between the two subsections 100 farthest from each other is 50mm, and the diameter of the virtual circumference 300 is 50mm. The light distribution curve is shown in fig. 6 e.

Example 6: as shown in fig. 3e, the light distribution element is formed by combining four independent subsections in contact, and the symmetry axis is l5. The central angles of the subsections 100a and 100b are 270 degrees, and the circumferential densities of the luminous bodies of the subsections 100a and 100b are 4/cm; the central angles of the subsections 100c and 100d are both 90 degrees, and the circumferential densities of the luminous bodies of the subsections 100c and 100d are 4/cm. The subsections 100a, 100b, the subsections 100a and 100b may constitute virtual circumferences 300a and 300b only through translation. The center distance D1 between the two subsections 100a and 100b is 80mm and the diameter of the virtual circumference 300a (or 300 b) is 50mm. The light distribution curve is shown in fig. 6 f.

Example 7: as shown in fig. 3f, the light distribution element is formed by combining six independent subsections 100 in contact, and the symmetry axis is l6. The central angles of the subsections 100a and 100b are 180 degrees, and the circumferential density of the luminous bodies is 4/cm; the central angles of the subsections 100c, 100d, 100e and 100f are all 90 degrees, and the circumferential density of the luminous bodies is 4/cm. All of the subsections 100a-100f may be translated only to form virtual circumferences 300a and 300b. The center distance D1 between the two subsections 100c and 100e is 140mm and the diameter of the virtual circumference 300a (or 300 b) is 50mm. The light distribution curve is shown in fig. 6 g.

Example 8: as shown in fig. 3g, the light distribution element is formed by combining four independent subsections 100 in contact, and the center of rotation symmetry is If. The central angles of the four subsections 100 are 180 degrees, and the circumferential density of the luminous bodies of the subsections 100 is 4/cm. These subsections 100 may constitute virtual circumferences 300a and 300b via translation only. The center distance D1 between the two subsections 100 farthest apart is 70mm, and the diameter of the virtual circumference 300a (or 300 b) is 50mm. The light distribution curve is shown in fig. 6 h.

Comparative example 1: as shown in fig. 4, the light distribution element was a circular ring with a diameter of 50mm and a circumferential density of 3 luminous bodies per cm. The light distribution curve is shown in fig. 6 i.

Example 2: as shown in fig. 5, the light distribution element is a combination of two independent circular rings, each circular ring has a diameter of 50mm, and the circumferential density of the luminous body is 4/cm. The light distribution curve is shown in fig. 6 j.

TABLE 1

	Beam angle/°	Center light intensity/cd	Diameter of light spot/mm
				Example 1	57.5	2496	410
Example 2	57.9	2495	410
				Example 3	58.6	2467	410
Example 4	56.7	2546	390
				Example 5	57.4	2529	400
Example 6	58.6	4931	420
				Example 7	58.8	4921	420
Example 8	58.7	4930	420
				Comparative example 1	57.8	2487	410
Comparative example 2	58.7	4931	420

In examples 1-5, the plurality of subsections are translated to form a virtual circumference. The light distribution element of comparative example 1 is a circular ring. The diameter of the virtual circumference and the circumferential density of the luminous body are the same as those of the light distribution element of comparative example 1. As can be seen from table 1, the beam angle, the center light intensity and the spot diameter of examples 1 to 5 are almost the same as those of comparative examples, which indicates that the lamp obtained according to the technical scheme of the present application can achieve a good lighting effect.

In examples 6-8, the plurality of subsections are translated to form two virtual circles. The light distribution element of comparative example 2 is two independent circular rings. The diameter of the virtual circumference and the circumferential density of the luminous body are the same as those of the light distribution element of comparative example 2. As can be seen from table 1, the beam angle, the center light intensity and the spot diameter of examples 6 to 8 are almost the same as those of comparative examples, which indicates that the lamp obtained according to the technical scheme of the present application can achieve a good lighting effect.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.

Claims

1. A light distribution element is characterized by comprising a plurality of subsections which are mutually combined, wherein the subsections are all part of a circumference,

Wherein the plurality of subsections are movable about at least one virtual circumference.

2. The light distribution element of claim 1, wherein the plurality of sub-segments are moved to form one or more virtual circumferences.

3. The light distribution element of claim 1 or 2, wherein the plurality of sub-segments are translationally stitched into at least one virtual circumference.

4. The light distribution element according to claim 3, wherein the shape formed by combining the plurality of sub-segments with each other is a symmetrical shape.

5. A light distribution element according to claim 3, wherein the central angles of the plurality of sub-segments are equal.

6. A light distribution element according to claim 3, wherein the central angle of at least one of the sub-segments is not equal to the central angles of the remaining sub-segments.

7. The light distribution element according to claim 6, wherein the number of the plurality of sub-segments is 3 or more, and the sub-segment having the larger central angle is distributed on the periphery of the sub-segment having the smaller central angle.

8. The light distribution element according to any one of claims 5 to 7, wherein the central angle is 45 degrees or more.

9. A light distribution element according to claim 3, wherein the diameters of the plurality of sub-segments are equal.

10. The light distribution element according to claim 9, wherein, in a shape in which the plurality of sub-segments are combined with each other, a ratio of a center distance between two sub-segments farthest from each other to a diameter of the virtual circumference is 0.5:1 to 5:1.

11. A light distribution element according to claim 3, wherein, among the plurality of sub-segments, at least one sub-segment has a diameter smaller than the diameter of the remaining sub-segments.

12. The light distribution element according to claim 11, wherein the number of the plurality of sub-segments is 3 or more, and the sub-segments having a larger diameter are distributed on the periphery of the sub-segment having a smaller diameter.

13. The light distribution element according to claim 12, wherein, in a shape formed by combining the plurality of sub-segments with each other, a ratio of a center distance between two sub-segments farthest from each other to a diameter of a virtual circumference having a largest diameter is greater than or equal to 1:1 and less than or equal to 10:1.

14. A light distribution element according to claim 3, wherein at least one of the plurality of sub-segments includes a light shielding region near a center of the circumference and a light transmitting region radially outside the light shielding region.

15. The light distribution element according to claim 14, wherein a light shielding pattern is configured in the light shielding region to realize light shielding.

16. A lamp comprising a plurality of light emitters and the light distribution element according to any one of claims 1 to 15, the plurality of light emitters being arranged corresponding to the plurality of subsections,

The lamp also comprises a lamp panel, the plurality of luminous bodies are fixed on the lamp panel, and the light distribution element is fixedly connected with the lamp panel and covers the corresponding luminous bodies.

17. A luminaire as claimed in claim 16, characterized in that the circumferential density of the luminous bodies is 2-5 per cm in the circumferential extension direction of the subsections.