CN114110534B

CN114110534B - Reflective assembly, reflective light source device and lamp

Info

Publication number: CN114110534B
Application number: CN202010879653.7A
Authority: CN
Inventors: 邓敏; 尼尔斯·雅各·伍德斯
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2024-08-16
Anticipated expiration: 2040-08-27
Also published as: CN114110534A

Abstract

Embodiments of the present disclosure provide a light reflecting assembly, a reflective light source device, and a luminaire. The light reflecting assembly includes a sidewall portion. The first side wall, the second side wall, the third side wall and the fourth side wall enclose a reflecting cavity. The reflective cavity has a first opening and a second opening at opposite ends. The first opening is in a first reference plane, and a first reference straight line perpendicularly intersects the first reference plane at a first intersection point in the first opening. The included angle between the first straight line segment connecting the first end point and the second end point and the part of the first reference plane overlapped with the first opening is a first included angle, the included angle between the second straight line segment connecting the third end point and the fourth end point and the part of the first reference plane overlapped with the first opening is a second included angle, and the first included angle is smaller than the second included angle.

Description

Reflective assembly, reflective light source device and lamp

Technical Field

Embodiments of the present disclosure relate to a light reflecting assembly, a reflective light source device and a luminaire.

Background

Floodlight is widely applied to various indoor and outdoor illumination fields such as highway tunnel illumination, airport port illumination, municipal engineering illumination, urban landscape illumination, outdoor advertisement illumination, stadium illumination, factory warehouse illumination and the like. Because these applications require that the light be uniformly distributed over a wide area and that unwanted glare and interference light be avoided as much as possible, the uniformity of the light distribution and the antiglare properties become the main criteria for judging the quality of the floodlight. In addition, the convenience of adjustment, ease of installation, and light efficiency of floodlights are also issues that need to be addressed in floodlight applications.

Disclosure of Invention

An embodiment of the present disclosure provides a light reflecting assembly including a sidewall portion. The side wall part comprises a first side wall, a second side wall, a third side wall and a fourth side wall, wherein the first side wall and the second side wall are opposite to each other, the third side wall and the fourth side wall are opposite to each other, a reflecting cavity is formed by surrounding the first side wall, the second side wall, the third side wall and the fourth side wall, and the reflecting cavity is provided with a first opening and a second opening at two opposite ends. The first opening is in a first reference plane, and a first reference straight line perpendicularly intersects the first reference plane at a first intersection point in the first opening. In a first cross-section of the reflective assembly coplanar with the first reference line and intersecting the first sidewall and the second sidewall, an inner surface of the first sidewall facing the reflective cavity has a first end point on the first reference plane and a second end point opposite the first end point, and an inner surface of the second sidewall facing the reflective cavity has a third end point on the first reference plane and a fourth end point opposite the third end point. The included angle between the first straight line segment connecting the first end point and the second end point and the part of the first reference plane overlapped with the first opening is a first included angle, the included angle between the second straight line segment connecting the third end point and the fourth end point and the part of the first reference plane overlapped with the first opening is a second included angle, and the first included angle is smaller than the second included angle.

In one example, the first included angle is in a range of 30 degrees or more and 120 degrees or less.

In one example, the second angle differs from the first angle by 20 degrees or more.

In one example, the first sidewall intersects the first reference line.

In one example, in a second cross-section of the reflective assembly coplanar with the first reference line and intersecting the third sidewall and the fourth sidewall, an inner surface of the third sidewall facing the reflective cavity has a fifth end point on the first reference plane and a sixth end point opposite the fifth end point, and an inner surface of the fourth sidewall facing the reflective cavity has a seventh end point on the first reference plane and an eighth end point opposite the seventh end point. An included angle between a third straight line segment connecting the fifth end point and the sixth end point and a part of the first reference plane overlapped with the first opening is a third included angle, and an included angle between a fourth straight line segment connecting the seventh end point and the eighth end point and a part of the first reference plane overlapped with the first opening is a fourth included angle. At least one of the first angle, the second angle, the third angle, and the fourth angle is adjustable.

In one example, at least a portion of the inner surface of at least one of the first and second sidewalls is a concave curved surface protruding away from the reflective cavity.

In one example, the concave curved surface is a smooth curved surface.

In one example, in a second cross-section of the reflective assembly coplanar with the first reference line and intersecting the third sidewall and the fourth sidewall, an inner surface of the third sidewall facing the reflective cavity has a fifth end point on the first reference plane and a sixth end point opposite the fifth end point, and an inner surface of the fourth sidewall facing the reflective cavity has a seventh end point on the first reference plane and an eighth end point opposite the seventh end point. On the second cross section, the fifth end point is closer to the first reference straight line than the sixth end point, and the seventh end point is closer to the first reference straight line than the eighth end point.

In one example, the inner surface of at least one of the first, second, third, and fourth sidewalls is entirely smooth.

In one example, a portion of the inner surface of the second sidewall adjacent the third sidewall and a portion of the inner surface of the third sidewall adjacent the second sidewall are both within a first smooth curved surface; and/or a portion of the inner surface of the second sidewall adjacent the fourth sidewall and a portion of the inner surface of the fourth sidewall adjacent the second sidewall are both within a second smooth curved surface.

In one example, the inner surface of the second sidewall has at least one boss protruding toward the reflective cavity.

In one example, at least a portion of the boss is located on a side of the second straight segment facing the first sidewall in the first cross section.

In one example, the light reflecting assembly further includes a light transmitting plate adjacent to and covering the second opening.

In one example, at least a portion of an outer surface of at least one of the first, second, third, and fourth sidewalls distal from the reflective cavity is planar.

In one example, the length of the first straight line segment is less than the length of the second straight line segment.

Another embodiment of the present disclosure provides a reflective light source device including: at least one light reflecting component; and a light source assembly coupled to at least one of the light reflecting assemblies, including an effective light emitting portion. The light-emitting center line direction of the light source assembly is the same as an extending direction of the first reference straight line, and the first reference straight line intersects with the effective light-emitting portion of the light source assembly.

In one example, the light source assembly includes a circuit board and at least one light emitting device mounted on the circuit board, and the at least one light reflecting assembly is coupled to the circuit board such that the at least one light emitting device is located within the reflective cavity of the at least one light reflecting assembly in a one-to-one correspondence.

In one example, in the first cross section, in a case where a straight line segment connecting the second end point of the first side wall and the fourth end point of the second side wall is parallel to the first reference plane, the second end point of the first side wall overlaps with an edge portion of the effective light emitting portion closest to the first end point in the extending direction of the first reference straight line.

In one example, the light from the light source assembly passes through the reflective cavity to form an illumination area on a second reference plane, the second reference plane being located on a side of the at least one light reflecting assembly opposite the light source assembly, the illumination area having at least one pair of edges parallel to each other.

In one example, the illumination area is substantially rectangular or square in shape.

In one example, on the first cross-section, the first sidewall is configured to reflect a first light ray from a luminous point of the light source assembly into a second light ray that intersects a reference line outside the reflective cavity, the reference line being a straight line passing through the luminous point and the fourth end point of the second sidewall.

In one example, the first sidewall of the at least one light reflecting assembly and the effective light emitting portion of the light source assembly are configured to be rotatable relative to each other.

In one example, the effective light emitting portion of the light source assembly has a bar shape.

Yet another embodiment of the present disclosure provides a luminaire comprising at least one reflective light source device described above; and the lampshade body is provided with at least one mounting part for mounting the at least one reflective light source device in a one-to-one correspondence.

In one example, each of the light source mounting portions is configured to mount the corresponding reflective light source device in at least two different orientations.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following brief description of the drawings of the embodiments will make it apparent that the drawings described below relate only to some embodiments of the present disclosure and are not limiting of the present disclosure.

Fig. 1 is a schematic perspective view of a reflective light source device according to an embodiment of the present disclosure;

fig. 2 is a schematic perspective view of a reflective light source device according to an embodiment of the present disclosure, viewed from the rear lower side;

fig. 3 is a schematic plan view of a reflective light source device according to an embodiment of the present disclosure;

Fig. 4 is a schematic structural view of a reflective light source device according to an embodiment of the present disclosure, in a first cross section along a dashed line AA shown in fig. 3;

Fig. 5 is a schematic structural diagram of a reflective component included in a reflective light source device according to an embodiment of the disclosure on a first cross section;

Fig. 6 is a schematic cross-sectional structure diagram of a rear sidewall of a reflective light source device in a first position provided in an embodiment of the disclosure in an upper half of fig. 6 is a schematic plan view of a first illumination area on a reference plane, and fig. 6 shows a schematic view of a partial light path of a light beam from a light source assembly reflected by a light reflecting assembly to the reference plane to form the first illumination area;

Fig. 7 is a schematic cross-sectional structure diagram of a rear sidewall of a reflective light source device in a second position according to an embodiment of the disclosure, and fig. 7 is a schematic plan view of a second illumination area on a reference plane, and fig. 7 shows a schematic view of a partial light path of light from a light source assembly reflected by a light reflecting assembly to the reference plane to form the second illumination area;

FIG. 8 is a schematic diagram of a reflective light source device according to an embodiment of the present disclosure forming a first illumination area and a second illumination area on a reference plane;

FIG. 9 is a schematic view of a reflective light source device according to an embodiment of the disclosure in a second cross-section;

Fig. 10 is a schematic plan view of a light source assembly in a reflective light source device according to an embodiment of the present disclosure;

FIG. 11 is a schematic perspective view of a reflector assembly according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of a reflective light source device at a first cross-section, showing a portion of the light path of light from a light source assembly, according to another embodiment of the present disclosure; and

Fig. 13 is a schematic perspective view of a lamp according to an embodiment of the disclosure.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed. The term "plurality" refers to two or more, unless explicitly defined otherwise. The term "coupled" is not limited to a direct connection, but also includes an indirect connection through intervening components, unless expressly defined otherwise. Like or identical reference numerals designate like or identical elements/objects throughout.

In this disclosure, the "parallel" of two straight line elements does not limit that the two straight line/plane elements must be exactly parallel, but rather allows for some deviation in the degree of parallelism of the two straight line/plane elements. For example, the angle between two straight lines/plane elements parallel to each other is less than 2 °. In this disclosure, the "perpendicular" of two straight line elements does not limit the angle between the two straight line/plane elements to exactly 90 °, but allows for some deviation in the degree of parallelism of the two straight line/plane elements. For example, the angle between two straight line elements perpendicular to each other may be in the range of 88 ° to 92 °.

The floodlight on the market at present has the following problems:

1. The floodlight on the market at present has the defects of uneven general light distribution, bright center of illuminated area, dark periphery, bright near distance from a light source, dark far distance from the light source, small illuminated range and circular, elliptical or irregular light beam range. Because floodlight grading is inhomogeneous, in order to make the regional whole that needs the illumination all can reach the illumination requirement, when many lamps combination illumination, then need carry out accurate simulation in advance and installation scene direction debugging, even make by increasing lamps and lanterns quantity and make illumination requirement can all be reached to the regional each point of being shone, the procedure is loaded down with trivial details, consuming time and consuming effort, the cost increases, and the regional light intensity of being shone is inhomogeneous, seriously influences the illuminating effect.

2. The floodlight currently on the market generally has serious light overflow problems. Besides the areas to be irradiated, unnecessary or overflowing light can cause light pollution to surrounding houses if emitted to the periphery; when directed into the sky above, this can lead to nepheline. Nepheline is a type of light pollution that damages the sky at night and may harm the health of humans and animals. And energy is wasted when the light is not directed to the predetermined target.

3. Currently, commercially available floodlights are mostly installed at high places, designed such that the light source directly faces the illuminated area. In the illuminated area, the light source is directly visible to the naked eye. The glare caused by the design not only can cause visual inadaptation, but also can interfere with the vision, and in some cases, the visual interference can cause serious consequences, such as the glare emitted by a street lamp, can cause accidents because a driver cannot see the road condition in front, and the glare of the light on a football court can cause the player to lose the advantage because the football position cannot be seen.

4. Currently commercially available floodlights have only a fixed light emission angle, which depends on the design of the reflector cup, reflector or lens for which they are used. Different lighting angles are required for different applications, so that lamp manufacturers and distributors must prepare product stock for various lighting angle requirements if they want to shorten the delivery period. Because the light emitting angle is required to be various, the product stock can occupy quite large funds, the light source is updated quickly, and the prepared stock can become obsolete products if the prepared stock cannot be sold in time. For products which are not stored and have an unusual lighting angle, the light fixture manufacturers often have difficulty in producing or ordering the reflecting cups, the reflecting covers or the lenses due to the small quantity.

5. The floodlight sold in the market at present is inconvenient to install. Floodlights are often installed at high altitudes or on lamp poles, requiring overhead work when installed. When on-site debugging is carried out, due to the fact that light distribution of the commercially available floodlight is uneven, the angle is single and the direction is single, an installer needs to debug the hanging direction and the angle of the floodlight on the high-altitude mounting support for many times, and due to the limitation of the lamp post position and the mounting support, some directions can not be irradiated, and in order to meet the illumination requirement, a new lamp post is required to be added or the direction of the mounting support is required to be adjusted, and therefore engineering quantity is greatly increased.

6. Currently, the light efficiency of the commercially available floodlight using the reflective cup or the reflective shade is generally not high.

The embodiment of the disclosure provides a reflective component, a reflective light source device and a lamp, so that the lamp has wider irradiation range, higher light efficiency and more uniform light distribution, and the emitted light beam has a wider range than that of the traditional floodlight and has a uniform brightness (for example, rectangular shape), thereby preventing the generation of low-brightness gaps and avoiding overlapped high-brightness regions when the multiple lamps are used for splicing large-range illumination. The reflective assembly, the reflective light source device and the lamp of the embodiment of the disclosure also cut off useless light overflow, improve energy efficiency, prevent harmful glare from being generated, adjust the light emitting angle in advance or on the installation site, be not limited by a lamp post and a bracket, realize 360-degree dead-angle-free illumination by multi-direction and multi-angle combination, and enable the floodlight to be installed flexibly and conveniently.

Fig. 1 and 2 are schematic perspective views of a reflective light source device according to an embodiment of the present disclosure; fig. 3 is a schematic plan view of a reflective light source device according to an embodiment of the present disclosure; fig. 4 is a schematic cross-sectional structure of a reflective light source device provided in an embodiment of the present disclosure at a dashed line AA shown in fig. 3; fig. 5 is a schematic diagram of a first cross-sectional structure of a reflective component in a reflective light source device according to an embodiment of the disclosure at a position corresponding to a dashed line AA.

Referring to fig. 1 to 5, a reflective light source device RS provided by an embodiment of the present disclosure includes: a light source assembly S and a light reflecting assembly R coupled to each other.

The light reflecting assembly R includes a first sidewall (rear sidewall) 2, a second sidewall (front sidewall) 3, a third sidewall (left sidewall) 4-1, and a fourth sidewall (right sidewall) 4-2. The first side wall 2 and the second side wall 3 are opposite to each other, and the third side wall 4-1 and the fourth side wall 4-2 are opposite to each other. The first side wall 2, the second side wall 3, the third side wall 4-1 and the fourth side wall 4-2 enclose a reflective cavity C. Adjacent two of the first, second, third and fourth side walls 2, 3, 4-1, 4-2 may be directly connected or may be connected by other intermediate members. For example, the first side wall 2, the second side wall 3, the third side wall 4-1, and the fourth side wall 4-2 are each continuous.

In the present embodiment, the second side wall 3, the third side wall 4-1 and the fourth side wall 4-2 are formed as a single body to which the first side wall 2 is rotatably connected. Embodiments of the present disclosure are not limited thereto. In another example, a portion of the first sidewall 2 may be formed as one piece with the second sidewall 3, the third sidewall 4-1, and the fourth sidewall 4-2, while another portion of the first sidewall 2 is rotatably connected to the one piece. In another example, at least a portion of at least one of the first, second, third, and fourth sidewalls 2, 3, 4-1, and 4-2 is rotatably coupled to at least one other of the first, second, third, and fourth sidewalls 2, 3, 4-1, and 4-2. In yet another example, the first side wall 2, the second side wall 3, the third side wall 4-1 and the fourth side wall 4-2 are integrally formed and are non-rotatable relative to each other.

The reflective cavity C has a first opening V1 at an upper end and a second opening V2 at a lower end. The reflective cavity C is open to the outside at a first opening V1 at the upper end and a second opening V2 at the lower end. The first opening V1 is defined, for example, by upper end edges of the inner surfaces of the first, second, third and fourth sidewalls 2, 3, 4-1 and 4-2 facing the reflective cavity C; the second opening V2 is defined, for example, by lower end edges of the inner surfaces of the first, second, third and fourth sidewalls 2, 3, 4-1 and 4-2 facing the reflective cavity C.

In the present embodiment, the first opening V1 is located, for example, in the reference plane P1 (i.e., an example of a first reference plane); that is, at least a portion of the upper end edge of the inner surface of each of the first, second, third, and fourth sidewalls 2,3, 4-1, and 4-2 defining the first opening V1 is located within the reference plane P1. The second opening V2 is located, for example, in the reference plane P2 (i.e., an example of a second reference plane); that is, at least a portion of the lower end edge of the inner surface of each of the first, second, third, and fourth sidewalls 2,3, 4-1, and 4-2 defining the second opening V2 is located within the reference plane P2. In the present embodiment, for example, the reflection cavity C is configured to reflect light emitted from the light emitting device 1 into the inside of the reflection cavity C through the second opening V2 into the outside of the reflection cavity C. Here, the inside and outside of the reflective cavity C are bounded by reference planes P1 and P2. Specifically, the space portion between the reference planes P1 and P2 in the reflective cavity C is the inside of the reflective cavity C, and the space portion other than this inside is the outside of the reflective cavity C. Since the first sidewall 2 is rotatable in the present embodiment, the position of the reference plane P2 also varies with the position of the first sidewall 2. Here, the reference planes P1 and P2 are virtual planes for explaining and defining the positional relationship of the related structures and spaces.

In the present embodiment, the light source assembly S includes the wiring board 7 and the light emitting device 1 mounted on the wiring board 7. The upper end surface of the light reflecting member R is located, for example, in the reference plane P1, and is configured to carry the wiring board 7, for example, such that the wiring board 7 is supported on the upper end surface of the light reflecting member R when the light source member S and the light reflecting member R are combined together. At least a portion of the light emitting device 1 is positioned in the reflective cavity C to emit light toward the reflective cavity C, for example, after the light source assembly S is mounted on top of the light reflecting assembly R.

The light source assembly S has, for example, a light-emitting center line direction. The light emission center line direction of the light source module S is the light emission center line direction of the light emitting device 1, for example, the downward direction of the straight line R1 in fig. 4 and 5. The intensity of the light emitted from the light emitting device 1 in the direction of the emission center line is substantially maximum. For example, in the first cross section, the direction of the light emitting center line is also located at a substantially central position of all the light rays emitted by the light source assembly S. In the embodiment of the present disclosure, the light emitting device 1 is a Light Emitting Diode (LED) device, and the light emitting center line direction of the light source assembly S is, for example, a light emitting normal direction of the light emitting device 1. This direction is for example perpendicular to the effective light emitting portion of the light emitting layer of the LED device 1. For example, in the embodiment shown in fig. 1 to 5, the light emission centerline direction is, for example, substantially perpendicular to the wiring board 1 and the reference plane P1. Here, the type of the light source module S is not limited.

The first reference straight line R1 perpendicularly intersects the reference plane P1 at a first intersection point within the first opening V1. Here, the first reference straight line R1 is a virtual straight line for explaining the positional and dimensional relationship of the relevant member. The first reference line R1 may extend infinitely in opposite two extension directions. An extending direction of the first reference line R1 is the same as the light emitting center line direction. For example, the first reference straight line R1 intersects with the effective light emitting portion of the light source module S. Here, the position where the first reference straight line R1 intersects with the effective light emitting portion of the light source module S is not limited. In one example, the first reference straight line R1 intersects with the center of the effective light emitting portion of the light source device S. In another example, the first reference straight line R1 intersects with an edge of the effective light emitting portion of the light source assembly S.

In one example, the first reference straight line R1 intersects the effective light emitting portion of the light source assembly S and intersects the rear sidewall 2. That is, in the extending direction of the first reference straight line R1, the rear sidewall 2 at least partially overlaps with the effective light emitting portion of the light source module S.

For example, the first side wall 2 is a rear side wall 2 located at the rear side of the LED device 1, and an inner surface thereof facing the reflective cavity C is, for example, a first concave curved surface protruding away from the reflective cavity C. The first concave curved surface is, for example, a back reflecting surface. For example, the first concave curved surface is a smooth curved surface or a curved surface formed by multiple sections of planes. Embodiments of the present disclosure are not so limited. In another example, the inner surface of the rear sidewall 2 facing the reflective cavity C at the rear side of the LED device 1 may be entirely planar, or partially planar and partially curved.

The rear sidewall 2 is rotatable, and the rear light-reflecting surface can extend downward to the right under the LED device 1, for example, to intercept at least part of glare of the LED device 1 to the right under and the rear under, and reflect light of the LED device 1 to the right under and the rear under to the rear light-reflecting surface to the front so as to improve the uniformity of illumination of the illumination area.

For example, the second side wall 3 is a front side wall 3 located at the front side of the LED device 1, and its inner surface facing the reflective cavity C is for example a second concave curved surface protruding away from said reflective cavity C. For example, the second curved surface is a smooth curved surface or a curved surface formed by multiple sections of planes. For example, the second curved surface is configured to intercept glare from the light source directed forward. The second concave curved surface is, for example, a front light blocking surface or a front light reflecting surface. Embodiments of the present disclosure are not so limited. In another example, at least one of the first concave curved surface and the second concave curved surface is a smooth curved surface; in still another example, the inner surface of at least one of the rear sidewall 2 and the front sidewall 3 facing the reflective cavity C may be entirely planar, or partially planar and partially curved.

For example, the first curved surface and the second curved surface are different in shape and size. Referring to fig. 3 and 4, the first curved surface and the second curved surface also differ in the angle from the light emission center line direction of the LED device 1 on the first cross section along the broken line AA.

The third sidewall 4-1 and the fourth sidewall 4-2 are, for example, a left sidewall 4-1 and a right sidewall 4-2, respectively, which are disposed at the left side and the right side of the LED device 1, respectively, to intercept glare of the LED device 1 in the left-right direction. The inner surfaces of the left side wall 4-1 and the right side wall 4-2 facing the reflecting cavity C are respectively, for example, entirely flat or smooth curved surfaces or curved surfaces formed by multiple sections of flat surfaces. The inner surfaces of the left and right side walls 4-1 and 4-2 facing the reflective cavity C are left and right reflective surfaces, respectively, for example, reflecting light irradiated thereto by the LED device 1 to the side front. Therefore, the light emitting direction of the reflective light source device RS provided by the embodiment of the present disclosure may be different from the direction in which the LED device 1 faces.

The included angle between each light blocking surface or light reflecting surface and the light emitting direction of the light source can be designed carefully, for example, so that the front light blocking surface or front light emitting surface does not block the light rays of the LED device 1, which are directly emitted to the illumination area or reflected to the illumination area by the rear light reflecting surface or the left and right light reflecting surfaces, as much as possible, to improve the light efficiency.

In the embodiment of the disclosure, it may be designed that the reflection angle and reflection path of the light emitted by the light source can be adjusted by the back reflecting surface and/or the left and right reflecting surfaces and/or the front light blocking surface or the front reflecting surface, so as to adjust the light emitting angle of the reflective light source device, which is achieved by adjusting the included angle between the back reflecting surface and/or the left and right reflecting surfaces and/or the front light blocking surface or the front reflecting surface and the light emitting central line direction of the light source. For example, the included angle between the back reflecting surface and the light emitting central line direction of the light source may be adjustable, or the included angle between the left reflecting surface and the right reflecting surface and the light emitting central line direction of the light source may be adjustable, or the included angle between the front light blocking surface or the front reflecting surface and the light emitting central line direction of the light source may be adjustable, or the included angle between any two or more of the back reflecting surface, the left reflecting surface and the right reflecting surface, the front light blocking surface or the front reflecting surface and the light emitting central line direction of the light source may be individually adjustable. The embodiment selects a design that the included angle between the back reflecting surface and the direction of the luminous center line can be adjusted for explanation.

The light sources currently used for floodlight illumination are basically energy-saving Light Emitting Diode (LED) light sources, and the light emitting angles of the LEDs are mostly between 100 degrees and 160 degrees. If the angle between the front light blocking surface and the normal to the light emission of the LED is sufficiently large, most of the light emitted from the LED to the illumination area is not blocked, but only light overflowing forward in the horizontal direction and forward upward by about 3% of the total luminous flux is blocked. However, if the front light blocking surface is made of a reflective material, the received light can be reflected to the area to be irradiated forward and downward, so that the absorption of the material to the 3% luminous flux is reduced, and the light efficiency is further improved. Through measurement and calculation, if the front reflecting surface is designed to be a concave surface or a concave surface formed by a plurality of sections of planes, the reflecting path is more beneficial to uniform light distribution.

In the reflective light source device RS of the embodiment of the present disclosure, the rear sidewall 2, the front sidewall 3, and the left and right sidewalls 4-1 and 4-2 may be independent parts, or may be integrated, i.e. designed as a whole, or may be integrated with some parts thereof, while other parts are independent parts. The materials of the rear side wall, the front side wall and the left side wall and the right side wall can be selected from metal materials, plastics (plated metal reflective films), reflective plastics, reflective adhesive films or reflective coatings, or a combination of a plurality of materials. When certain parts are integrally designed, for example, as shown in fig. 1 to 5, the front side wall, the left side wall and the right side wall are integrated, and the junction of each side wall is smoother, so that the uniformity of light distribution can be improved, and the production and the assembly are facilitated. In the reflective light source device RS of the embodiment of the disclosure, the rear side wall, the front side wall, and the left and right side walls are surrounded together to form a rectangular or square light outlet, that is, the second opening V2 of the reflective cavity C.

For example, in the reflective light source device RS of the embodiment of the disclosure, the light source device S is disposed on top of the light reflecting component, the LED device 1 is located in a strip-shaped area along the back light reflecting surface, and the light source may be a single-row or multi-row strip-shaped lattice formed by arranging a plurality of point light sources. The long side of the strip-shaped area is positioned at or near the back reflecting surface, and the short side is positioned at or near the left and right reflecting surfaces. In this embodiment, the LED device 1 is an elongated lattice of two rows of light emitting diodes, as shown in fig. 1 and 8.

In the reflective light source device RS of the embodiment of the present disclosure, the light emission angle of the LED device 1 is, for example, between 100 degrees and 160 degrees, and the portion of the LED device 1 that emits the strongest light is directly in front of the light source face, whereas the LED device 1 in the reflective light source device RS of the embodiment of the present disclosure is disposed at the top and irradiates downward, so that in the reflective cavity C, the portion of the LED device 1 that emits the strongest light is directly below.

Here, the first cross section is coplanar with the first reference straight line R1 and intersects the rear sidewall 2 and the front sidewall 3. Referring to fig. 4, in a first cross section, an inner surface of the rear sidewall 2 facing the reflective cavity C (i.e., a rear reflective surface) has a first end point E1 on the reference plane P1 and a second end point E2 opposite to the first end point E1; the inner surface of the second sidewall 3 facing the reflective cavity C (i.e., front reflective/front light blocking surface) has a third end point E3 on the reference plane P1 and a fourth end point E4 opposite to the third end point E3.

In the first cross section, the length of a first straight line segment connecting the first end point E1 and the second end point E2 of the inner surface of the rear side wall 2 is smaller than the length of a second straight line segment connecting the third end point E3 and the fourth end point E4 of the inner surface of the front side wall 3. For example, the length of the first straight line segment is smaller than the length of the second straight line segment. Note that the first straight line segment and the second straight line segment are virtual reference line segments (shown by broken lines in fig. 4 and 5) here for explaining the positional and dimensional relationships of the relevant members.

For example, an angle between the first line segment and a portion of the first reference plane P1 overlapping the first opening V1 is a first angle α1. The second straight line segment and the part of the first reference plane P1 overlapped with the first opening V1 form a second included angle α2. The first angle α1 is smaller than the second angle α1.

For example, the first included angle is in a range of 30 degrees or more and 120 degrees or less.

For example, the difference between the second included angle and the first included angle is greater than or equal to 20 degrees.

In the first cross section, the orthogonal projection of the second end point E2 of the rear side wall 2 on the reference plane RP perpendicular to the light emission center line direction is closer to the orthogonal projection of the effective light emission portion of the light source module S on the reference plane than the orthogonal projection of the fourth end point E4 of the front side wall 3 on the reference plane RP. For example, in fig. 4, the orthogonal projection of the second end point E2 of the rear side wall 2 on the reference plane RP overlaps with the edge of the light source module that is far from the rear side wall located in the orthogonal projection of the effective light emitting portion on the reference plane RP, and the orthogonal projection of the fourth end point E4 of the front side wall 2 on the reference plane RP is located at a position farther toward the front side than the orthogonal projection of the effective light emitting portion of the light source module on the reference plane RP. The rear sidewall 2 in fig. 4 covers the entire effective light emitting portion of the light source assembly in the light emitting center line direction.

Note that the reference plane RP here is a virtual plane for explaining the positional and dimensional relationships of the light reflecting member and the relevant members of the light source assembly. The reference plane is for example parallel to the reference plane P1 and/or the reference plane P2 of the light-reflecting element. Here, the area occupied by the orthogonal projection of the effective light emitting portion of the light source assembly on the reference plane RP may also be referred to as a reference area RA. The reference area RA is a virtual area on a reference plane, the size and shape of the reference area RA are the same as the orthogonal projection of the effective light emitting part of the light source assembly on the reference plane RP, and the reference area RA is completely coincident with the position of the orthogonal projection of the effective light emitting part of the light source assembly on the reference plane RP.

Here, the effective light emitting portion of the light source assembly refers to a portion of the light emitted from the light source assembly that is illuminated before exiting the light source assembly.

In the present embodiment, the rear side wall 2 is rotated, for example, to a position covering only a part of the effective light emitting portion of the light source assembly in the light emitting center line direction. In this case, the orthogonal projection of the second end point E2 of the inner surface of the rear side wall 2 on the reference plane may be located in the reference area RA or on the edge of the reference area RA close to the rear side wall.

In the present embodiment, the rear side wall 2 is also rotatable, for example, to a position where it does not cover the effective light emitting portion of the light source assembly at all in the light emitting center line direction. In this case, the orthogonal projection of the second end point E2 of the inner surface of the rear side wall 2 onto the reference plane is located outside the reference area toward the rear side.

In the embodiments of the present disclosure, the extent to which the rear sidewall 2 and the front sidewall 3 cover the effective light emitting portion of the light source assembly in the light emitting center line direction is not limited. The asymmetric design of the rear sidewall 2 closer to the effective light emitting portion of the light source assembly than the front sidewall 3 allows for adjustment of the direction of the light rays exiting the reflective cavity from the light source assembly such that the illuminated area has a higher brightness uniformity.

As shown in fig. 1 to 5, in the reflective light source device RS of the embodiment of the disclosure, the adjustment of the included angle between the rear sidewall 2 and the light emitting center line direction of the light source assembly may be performed by an angle adjustment device.

Referring to fig. 1 to 5, the angle adjusting means may include a rotation shaft or hinge 5 and a catching groove 6. The rear side wall 2 rotates about a rotation axis or hinge 5 near one end of the LED device 1, and the position of the rear side wall 2 is fixed by a catching groove 6 provided at one end of the second opening V2 (i.e., light outlet). The clamping groove 6 can be provided with a plurality of clamping groove positions, when the rear side wall 2 rotates to a proper position, one end of the rear side wall 2, which is close to the light outlet V2, can slide into a certain clamping groove position in the clamping groove, and therefore an included angle between the rear side wall 2 and the light-emitting central line direction of the light source assembly is locked. By adjusting the included angle between the rear sidewall 2 and the direction of the light-emitting center line of the light source assembly, the reflection angle and the reflection path of the light emitted by the light source can be adjusted.

The angle adjusting device can also be applied to adjusting the included angle between the left side wall, the right side wall or the front side wall and the direction of the luminous central line of the light source component. For example, the angles between any two or more of the rear side wall, the left side wall, the right side wall and the front side wall and the direction of the luminous center line of the light source assembly can be respectively adjusted by using the angle adjusting device.

In another example, the angle adjustment device may further include, but is not limited to: the gear replaces the clamping groove to adjust and fix the included angle, or the motor controls the rotation and the positioning of each side wall. The advantage of using a motor is that the adjustment can be changed from manual to automatic or even from remote control in combination with a remote control. The adjustment of the angle between each sidewall and the direction of the light emission center line of the light source assembly can also be achieved by combining the above-mentioned various ways. The design that the reflection angle and the reflection path of the light rays emitted by the light source can be adjusted by the at least one side wall can increase the universality of the whole lamp, thereby reducing the production and stock costs of lamp manufacturers and distributors and shortening the delivery period.

In yet another embodiment, the relative positions between the various sidewalls of the retroreflective assembly are fixed, e.g., the four sidewalls are integrally formed; the light source assembly S is rotatably mounted near the first opening V1, for example. Therefore, the included angle between each side wall and the luminous central line direction of the light source component can be adjusted. Embodiments of the present disclosure are not limited to the manner in which the included angle is adjusted.

In one example of the embodiment of the present disclosure, the first sidewall 2 is configured to be able to cover at least a part of the effective light emitting portion of the light source module S in the light emitting center line direction of the light source module S, and the second sidewall 3 is configured to not cover the effective light emitting portion of the light source module S at all in the light emitting center line direction. In this way, glare generated by light emitted from the light-emitting device rearward and directly downward can be better cut off, and an illumination area with better luminance uniformity can be obtained.

For example, the first sidewall 2 may be configured to rotate between a first position and a second position.

In fig. 6, the upper half is a schematic cross-sectional view of the rear sidewall of the reflective light source device RS in the first position provided in the embodiment of the disclosure, and the lower half is a plan view of the first illumination area on the reference plane RP, where a part of the light path schematic diagram of the first illumination area is shown by the light from the light source assembly being reflected by the light reflecting assembly to the reference plane; in fig. 7, the upper half is a schematic cross-sectional view of the rear sidewall of the reflective light source device RS at the second position provided in the embodiment of the disclosure, and the lower half is a plan view of the second illumination area on the reference plane, wherein a part of the light path schematic diagram of the second illumination area is shown by the light from the light source assembly being reflected by the light reflecting assembly to the reference plane.

In fig. 6 and 7, for clarity and conciseness of the view, one light emitting point of the effective light emitting portion of the LED device 1 is shown as being directly below the LED device 1, thereby illustrating the light path condition of light emitted from the light emitting point.

Referring to fig. 6, in the first cross section, in the case where a straight line segment connecting the second end point E2 of the rear side wall 2 and the fourth end point E4 of the front side wall 3 is parallel to the reference plane P1, the second end point E2 of the rear side wall 2 overlaps with an edge of the effective light emitting portion of the LED device 1 closest to the first end point E1 in the light emitting center line direction. Therefore, glare generated by light rays emitted to the rear side of the light-emitting device can be effectively cut off, and the probability that the light rays are reflected to the front side wall through the rear side wall can be effectively reduced, so that the light utilization rate is further improved. Here, the relationship between the straight line segment connecting the second end point E2 of the rear side wall 2 and the fourth end point E4 of the front side wall 3 and the reference plane P1 is not limited, and in other embodiments, the two may not be parallel.

Referring to fig. 6, when the rear sidewall 2 is in the first position, the second end point E2 of the rear sidewall 2 overlaps with an edge of the effective light emitting portion of the LED device 1 closest to the first end point E1 in the light emitting center line direction of the light source assembly S. By using the back reflecting surface 2, the light with larger light intensity emitted by the led device 1 is reflected by the back reflecting surface to change the path, and is emitted forward, so that the light is more uniform. In addition, most of the light rays directly directed to the rear are also blocked by the rear sidewall to intercept glare that may occur.

Referring to fig. 7, when the rear sidewall 2 is at the second position, the second end point E2 of the rear sidewall 2 overlaps with the edge of the effective light emitting portion of the LED device 1 farthest from the rear sidewall 2 in the light emitting center line direction of the light source assembly S. At this time, the rear sidewall 2 completely covers the effective light-emitting portion of the LED device 1 in the light-emitting center line direction. Compared with the case that the rear side wall 2 is in the first position shown in fig. 6, when the rear side wall 2 is in the second position, the light with larger light intensity emitted by the LED device 1 directly below is reflected by the rear reflection surface more to change the path, and is emitted forward, so that the light is more uniform. In addition, most of the light rays directly directed rearward and directly downward are blocked by the rear side wall to intercept glare that may occur.

Referring to fig. 6, the light from the LED device 1 exits from the reflective cavity C to form a first illumination area M1 on the reference plane RP. Referring to fig. 7, the light from the LED device 1 exits from the reflective cavity C to form a second illumination area M2 on the reference plane RP. The first and second illumination areas M1 and M2 have a first edge G1, a second edge G2, a third edge G3, and a fourth edge G4 connected to each other. The rear, front, left and right side walls 2, 3, 4-1, 4-2 are configured to define the positions of the first, second, third and fourth edges G1, G2, G3, G4, respectively. In fig. 6, the first illumination area M1 has, for example, a square shape; in fig. 7, the second illumination area M2 has, for example, a rectangular shape. However, in the embodiment of the present disclosure, the specific shapes of the first and second illumination areas M1 and M2 are not limited. For example, the first and second illumination areas M1 and M2 may be rectangular, parallelogram, etc. having rounded vertex angles.

For example, the lower end edges of the rear side wall 2 and the front side wall 3 each have a straight line shape and are parallel to each other.

For example, the lower end edge of the left side wall 4-1 and the lower end edge of the right side wall 4-2 each have a straight line shape and are parallel to each other.

In another example, the first and second edges G1 and G2 of the illumination area on the reference plane RP are straight lines parallel to each other, and the third and fourth edges G3 and G4 are not parallel.

Since the reflective light source device RS provided by the embodiments of the present disclosure has an illumination area formed on the reference plane RP with at least one pair of edges parallel to each other, it is advantageous to combine a plurality of such light source devices in an array to form a substantially seamless and uniform brightness larger illumination area.

With continued reference to fig. 7, the rear sidewall 2 is configured to reflect the first light ray L1 from the light emitting point of the light source assembly S as a second light ray L2, the second light ray L2 intersecting the second reference straight line R2 at a second intersection point outside the reflection cavity C. On the first cross section, the second reference straight line R2 is a straight line passing through the light emitting point and the fourth end point E4 of the front side wall 3. Here, the second reference straight line R2 is a virtual straight line for describing the positional and dimensional relationship of the relevant member. In fig. 7, the second intersection of the second light ray L2 and the second reference straight line R2 is adjacent to the fourth end point E4 of the second sidewall 3. In this case, the rear sidewall 2 can make the second edge G2 of the illumination area more forward by the second light L2, thereby expanding the range of the illumination area.

Referring to fig. 8, in another example, in a case where the rear sidewall 2 is located at the second position, the first light ray L1 from the light emitting point of the light source assembly S intersects the second reference straight line R2 at a position farther from the fourth end point E4 of the front sidewall 3 after being reflected as the second light ray L2 via the rear sidewall 2. The reference plane RP in fig. 8 is farther from the reflective light source device RS than the reference plane RP in fig. 7, and thus the effect of increasing the second illumination area M2 than the corresponding first illumination area M1 is more pronounced due to the intersection of the light ray L2 with the second reference straight line R2. In fact, the reference plane RP may correspond to the ground, and the distance between the reflective light source device RS and the reference plane RP may be further increased, so in the reflective light source device RS provided in the embodiments of the present disclosure, effective control over the range size of the illumination area may be achieved by adjusting the position of the rear sidewall 2. It will be appreciated that the generation of the second light ray L2 is not limited to the case where the rear sidewall 2 is located at the second position. In case the rear side wall 2 is located at another position, it is also possible to reflect the light rays from the light source as light rays intersecting the second reference line outside the reflective cavity.

For example, in the reflective light source device of the embodiment of the disclosure, the curvature of the concave surface formed by the concave curved surface or the multi-section plane of the rear reflective surface and the included angle between the rear reflective surface and the front light blocking surface or the front reflective surface may be carefully designed to make light reflect on the rear reflective surface only once as much as possible, so as to avoid the rear reflective surface from reflecting light to the front light blocking surface or the front reflective surface, or to reduce secondary reflection on the left and right reflective surfaces, thereby improving the light efficiency. In the reflective light source device of the embodiment of the disclosure, the distance between the left and right reflective surfaces gradually increases from one end close to the light source to one end of the light outlet of the reflective component, and the included angle between the left and right reflective surfaces and the curvature of the left and right reflective surfaces when the left and right reflective surfaces are curved surfaces or curved surfaces formed by multiple sections of planes can be carefully designed to avoid light from being reflected secondarily between the left and right reflective surfaces or reflected to other reflective surfaces as much as possible, so that the light efficiency is further improved. By this design, the light reflecting assembly of the disclosed embodiments can increase the light efficiency by about 8%.

Fig. 9 is a schematic structural diagram of a reflective light source device according to an embodiment of the disclosure on a second cross section. Here, the second section intersects the first section. For example, the second section and the first section are perpendicular to each other. Here, the second cross section is coplanar with the first reference straight line R1 and intersects the third side wall 4-1 and the fourth side wall 4-2.

In the reflective light source device provided in the embodiment of the present disclosure, for example, referring to fig. 9, at least a portion of the inner surfaces of the left and right side walls 4-1 and 4-2 facing the reflective cavity C are planar.

Referring to fig. 9, in the second cross section, the inner surface of the left sidewall 4-1 facing the reflective cavity has a fifth end point E5 on the first reference plane P1 and a sixth end point E6 opposite to the fifth end point E5. The inner surface of the right side wall 4-2 facing the reflective cavity has a seventh end point E7 on the first reference plane and an eighth end point E8 opposite to the seventh end point E7.

On the second cross section, an included angle between a third straight line segment connecting a fifth end point E5 and a sixth end point E6 of the inner surface of the left side wall 4-1 and a portion of the first reference plane P1 overlapped with the first opening V1 is a third included angle α3; the fourth straight line segment connecting the seventh end point E7 and the eighth end point E8 of the inner surface of the right side wall 4-2 forms a fourth angle α4 with the portion of the first reference plane P1 overlapping the first opening V1. Note that the first straight line segment and the second straight line segment are virtual reference line segments here, which are used to describe the positional and dimensional relationships of the relevant members.

For example, at least one of the first angle α1, the second angle α2, the third angle α3, and the fourth angle α4 is adjustable.

For example, in the second cross section, the fifth end point E5 is closer to the first reference straight line R1 than the sixth end point E6, and the seventh end point E7 is closer to the first reference straight line R1 than the eighth end point E8.

In the embodiment of the present disclosure, the inner surface of at least one of the rear side wall 2, the front side wall 3, the left side wall 4-1, and the right side wall 4-2 is entirely a smooth surface. For example, the inner surface of each of the rear side wall 2, the front side wall 3, the left side wall 4-1, and the right side wall 4-2 is entirely a smooth surface. The smooth surface may be a smooth planar surface, a smooth curved surface, or a combination of both. By "smooth" is meant herein that there are no sharp edges or sharp corners apparent.

Referring back to fig. 3, both the portion of the inner surface of the front side wall 3 adjacent to the left side wall 4-1 and the portion of the inner surface of the left side wall 4-1 adjacent to the front side wall 3 are located within the first smooth curved surface Z1; and a portion of the inner surface of the front side wall 3 adjacent to the right side wall 4-2 and a portion of the inner surface of the right side wall 4-2 adjacent to the front side wall 3 are both located within the second smooth curved surface Z2. In another example, a portion of the inner surface of the front side wall 3 adjacent to the left side wall 4-1 and a portion of the inner surface of the left side wall 4-1 adjacent to the front side wall 3 are both located within the first smooth curved surface Z1; and the portion of the inner surface of the front side wall 3 adjacent to the right side wall 4-2 and the portion of the inner surface of the right side wall 4-2 adjacent to the front side wall 3 form a ridge at the junction. In yet another example, the portion of the inner surface of front sidewall 3 adjacent left sidewall 4-1 and the portion of the inner surface of left sidewall 4-1 adjacent front sidewall 3 form a ridge at the intersection; and a portion of the inner surface of the front side wall 3 adjacent to the right side wall 4-2 and a portion of the inner surface of the right side wall 4-2 adjacent to the front side wall 3 are both located within the second smooth curved surface Z2. In a section parallel to the first reference plane, the first smooth curved surface Z1 and the second smooth curved surface Z2 are, for example, smooth curves. Although the boundary of the first smooth curved surface Z1 and the second smooth curved surface Z2 is shown in fig. 1 to 3, this does not mean that there is a sharp ridge apparent at the boundary position; the first smooth curved surface Z1 and the second smooth curved surface Z2 are smoothly connected with corresponding portions of the inner surfaces of the front side wall 3, the left side wall 4-1 and the right side wall 4-2. In this embodiment, the first smooth curved surface Z1 and the second smooth curved surface Z2 replace the ridge lines that may appear at the corresponding boundary positions, which is beneficial to improving the uniformity of the light reflected by the ridge lines and exiting from the reflective cavity.

In the present embodiment, the portion of the inner surface of the front side wall 3 adjacent to the left side wall 4-1 is directly connected with the portion of the inner surface of the left side wall 4-1 adjacent to the front side wall 3; the portion of the inner surface of the front side wall 3 adjacent to the right side wall 4-2 is directly connected with the portion of the inner surface of the right side wall 4-2 adjacent to the front side wall 3. Embodiments of the present disclosure are not limited thereto, and in another example, a gap may exist between a portion of the inner surface of the front side wall 3 adjacent to the left side wall 4-1 and a portion of the inner surface of the left side wall 4-1 adjacent to the front side wall 3; there may be a gap between the portion of the inner surface of the front side wall 3 adjacent to the right side wall 4-2 and the portion of the inner surface of the right side wall 4-2 adjacent to the front side wall 3.

In the reflective light source device RS of the embodiment of the disclosure, the light emitting device 1 of the light source assembly R may be an LED light source discrete device, such as a light emitting diode, particularly a high-power light emitting diode, or an LED integrated light source, such as an integrated LED light bead, or a COB light source. Referring to fig. 10 and 11, when using these light emitting devices, the light emitting device 1 is typically mounted on a circuit board 7, which may be made of a copper substrate, an aluminum substrate, an FR-4 epoxy glass laminated board, a ceramic substrate, or the like. When the light emitting device 1 is mounted on the circuit board, the opening V1 at the top of the reflector R is used to dispose the light emitting device 1, and the circuit board is covered over the opening V1 or placed in the area of the opening V1. The circuit board 7 can be integrated with the reflector to change the orientation along with the change of the orientation of the reflector. For example, the circuit board does not exceed the boundaries of the horizontal cross section of the reflector assembly, and does not hinder seamless splice assembly between individual reflector assemblies.

For example, at least a portion of an outer surface of at least one of the rear, front, left, and right side walls remote from the reflective cavity is planar; for example, at least a portion of an outer surface of at least one of the rear, front, left and right side walls remote from the reflective cavity is perpendicular to the first reference plane. For example, at least a portion of the outer surfaces of the left and right sidewalls remote from the reflective cavity are parallel to each other. For example, at least a portion of the outer surfaces of the rear and front sidewalls remote from the reflective cavity are parallel to each other. For example, at least a portion of the outer surfaces of the left and right sidewalls facing away from the reflective cavity are perpendicular to at least a portion of the outer surfaces of the rear and front sidewalls facing away from the reflective cavity.

The rear side wall, the front side wall and the left side wall and the right side wall of the reflective component R of the reflective light source device RS in the embodiment of the disclosure form a main body of the reflective component. In order to facilitate the installation of the reflector R and the lamp body together, the reflector of the embodiments of the present disclosure may further include a main positioning hole 8, see fig. 1, so that a screw passes through the main positioning hole 8 to fix the reflector light source device on the lamp housing body.

The circuit board of the light source component S of the reflective light source device RS of the embodiment of the disclosure may further include a circuit board positioning hole X, and the screw may first pass through the main body positioning hole 8 and then pass through the circuit board positioning hole X, so as to fix the reflective component R, together with the circuit board 7 and the light emitting device 1, to the lampshade body.

The reflective component R of the reflective light source device RS of the embodiment of the present disclosure may further include a positioning peg 9, see fig. 2 and 5. The height of the positioning bolt 9 is smaller than or equal to the thickness of the circuit board 7, and can be correspondingly inserted into the positioning hole X of the circuit board to accurately jogge the reflecting component main body with the circuit board. The positioning bolt 9 can extend from the side wall of the reflector body, which forms the positioning hole 8, and is inserted into the positioning hole 9 of the circuit board.

In the reflective light source device RS of the embodiment of the present disclosure, the reflective component main body and the circuit board may also be fixed to the lamp body by a latch, an insert, a clip, or a locking piece.

In the reflective light source device RS of the embodiment of the present disclosure, the reflective component main body may further have an opening 10, so that a wire or a plug welded on the circuit board may pass through conveniently. The opening may be formed in one side wall portion or in a plurality of side wall portions; the opening 10 may be a smaller slot or may be hollowed out for a larger area.

In another embodiment of the present disclosure, the reflective light source device RS may further include a light-transmitting plate 11, such as a glass plate 11, adjacent to the light outlet V2 and covering the light outlet V2, so as to protect the internal structure of the reflective light source device RS from being contaminated and adversely disturbed. Here, the specific material of the light-transmitting plate 11 is not limited.

As for the light reflecting member in the reflection type light source device RS shown in fig. 12, the characteristics of the other portions are the same as those of the light reflecting member R of any of the foregoing embodiments except that the shape of the inner surface of the front side wall 3 facing the reflection cavity C is different and one more light transmitting plate 11 is provided.

In fig. 12, the inner surface of the front side wall 3 facing the reflecting cavity C has a projection 12 projecting toward the reflecting cavity C. The boss 12 is located between the third end point E3 and the fourth end point E4 of the inner surface of the front side wall 3.

In the cross section shown in fig. 12, at least a part of the boss 12 is located on the side of the second straight line segment between the third end E3 and the fourth end E4 of the front side wall 3, which is close to the side wall portion 2. A second straight line segment between the third end E3 and the fourth end E4 of the front sidewall 3 intersects the boss 12. Here, the second straight line segment between the third end point E3 and the fourth end point E4 of the front side wall 3 is a virtual reference line, as shown by a broken line in fig. 12, for describing the positional and dimensional relationship of the relevant members.

The glass plate 11 may itself reflect a part of the light to the front reflecting surface, and the reflected light is reflected by the front reflecting surface of the biconcave curved design formed with a convex portion 12, so that the light reflected by the glass plate 11 back to the front reflecting surface can be reflected again into the area to be irradiated, see the light path indicated by the arrow in fig. 12. For example, each concavity may be comprised of a number of repeating units, which may be polygonal lands or pits, e.g., similar to a golf ball surface or a track surface.

Although one light source assembly S and one light reflecting assembly R are correspondingly installed to form one reflective light source device RS in the above embodiments, it is understood that the embodiments of the present disclosure do not limit the number relationship of the combinations of the light source assembly S and the light emitting assembly R.

The disclosed embodiments also provide a lamp LT, see fig. 13, including a lamp housing body 20 and four reflective light source devices RS mounted to the lamp housing body 20. Here, each of the reflective light source devices RS includes one light source assembly S and four light reflecting devices R. Each light source assembly S includes a circuit board and four light emitting devices mounted on the circuit board 7, and four light reflecting assemblies R are coupled to the circuit board 7 in one-to-one correspondence with the four light emitting devices 1.

Each of the reflective light source devices RS may be mounted to the lamp housing body 20 in at least two mounting orientations, for example. For example, referring to fig. 13, the lamp housing body 20 is substantially parallel to the ground, and four reflective light source devices RS are mounted to the lamp housing body 20 in a first orientation. In this way, the light emitted from the lamp LT is emitted toward the front lower side of the lamp, and a rectangular illumination area is formed at a position just below and forward of the lamp LT, for example. The four reflective light source devices RS may be mounted to the lamp housing 20 in the second orientation. In this way, the light emitted from the lamp LT is emitted toward the lower left side of the lamp, and a rectangular illumination area is formed at a position right below the lamp LT. The four reflection type light source devices RS may be mounted to the lamp housing 20 in the third position. In this way, the light emitted from the lamp LT is emitted toward the right lower side of the lamp, and a rectangular illumination area is formed at a position right below the lamp LT, for example. Furthermore, it is understood that the four reflective light source devices may also be in different mounting orientations, respectively. Therefore, the lamp disclosed by the invention can realize accurate regulation and control on the position and the range of the illumination area only by adjusting the installation position of the reflective light source device or independently adjusting the rear side wall of each reflective component under the condition that the installation position of the lamp shade body is not changed.

Because the reflective light source device in the embodiment of the disclosure is designed to be illuminated downwards by the light source surface and the light emitting direction is inclined light emitting, the reflective light source device in the embodiment of the disclosure can rotate 360 degrees in the horizontal direction, so that the light emitting direction of the reflective light source device can be adjusted only by horizontally rotating the reflective component or the reflective light source device under the condition that the mounting positions of the lampshade body mounting base and the lampshade body are not changed, and the light emitting direction of the lamp is changed. And moreover, a plurality of independent reflection type light source devices can be flexibly spliced and combined into a large reflection type light source device, the large reflection type light source device is installed in a large lamp shade body, each independent reflection type light source device can rotate 360 degrees in the horizontal direction and is set into different light emitting directions, meanwhile, the reflection angle and the reflection path of light emitted by a light source can be adjusted by combining the functions of being adjustable, each independent reflection type light source device can be adjusted into different light emitting angles, the light emitting direction and the light emitting angle of the combined large reflection type light source device can be flexibly combined, therefore, the whole lamp can irradiate in any direction around or all around under the condition of not changing the installation positions of the lamp shade body, the light intensity proportion and the irradiation range in all directions can be modulated randomly to achieve specific overall illumination requirements, the whole lamp is not limited by a mounting bracket any more, and the problem of inconvenient installation of a lamp post on the market is solved.

The outer surface of at least one of the front side wall, the left side wall and the right side wall of the reflecting component, which is far away from the reflecting cavity, is a plane. For example, the outer surface of the reflector provided in the embodiments of the present disclosure may be rectangular, particularly square, on a horizontal cross section (for example, a cross section parallel to the reference plane RP), which is more favorable for seamlessly splicing and combining multiple reflectors into a large reflector, especially when the reflector is designed as a square, the rotation of the reflector in the horizontal direction (each rotation by 90 degrees) does not change the occupation of the reflector on the lamp body mounting base, so that the installation position of the reflector is the same no matter which direction the reflector emits light, and the installation compatibility of the reflector is greatly improved.

The reflective assembly, the reflective light-emitting device and the lamp provided by the embodiment of the disclosure have the following advantages in addition to the advantages described above:

first, when the rear sidewall is located at the second position, the light source is hardly directly observed by naked eyes under the light emitting device of the reflective light source apparatus provided in the embodiment of the disclosure, and is hidden under the shielding of the rear sidewall. However, since the rear side wall, the left and right side arms and the front side wall completely enclose the side surface of the light source by 360 degrees, the light source cannot be observed with naked eyes under the side of any direction of reflection. Even if the reflective light source device of the embodiment of the present disclosure is observed in the illuminated area, the light source cannot be observed at many angles, and the light rays reflected by the reflective surface enter the eyes, and the strongest light rays emitted by the light source are reflected to a larger area by the rear reflective surface, so that the light intensity of the reflected light rays is far smaller than that of the direct-view light source. Even if the light source is observed at a specific angle in the illuminated area, the light source is not directly seen in front of the light source, but only the side face of the light source is seen, so that the light source is not too glaring. In summary, the design avoids the glare caused by the direct exposure of the light source in the visual field, thereby improving the safety and comfort of illumination, and avoiding serious consequences such as accidents caused by the fact that a driver cannot see the road condition ahead due to the glare sent by the street lamp or loss of the sense of interest caused by the fact that the player cannot see the football position due to the glare of the light on the football field.

Second, when the conventional floodlight source is designed to face the illumination area, if the floodlight is obliquely downward illuminated from a high position, the light of the same intensity is distributed in a relatively small range at a position closer to the light source, and the light of the same intensity is distributed in a relatively large range at a position farther from the light source, which results in uneven light distribution. In the embodiment of the disclosure, the light source irradiates forward downwards, the light emitting direction is oblique light emitting, and the light irradiated to the back reflecting surface is reflected by the back reflecting surface to change the path to be emitted forward due to the concave surface formed by the concave curved surface or the multi-section plane which is carefully designed by the back reflecting surface, so that the light is mixed with the light which is emitted by the light source and directly irradiates the illuminated area forward without reflection, and the part of the light with the greatest light intensity emitted by the right front of the light source is reflected to the far front by the back reflecting surface, so that the light in the front far from the reflective light source device is compensated, and the front illumination area with uniform light distribution is formed. Because of the asymmetric design of the rear reflecting surface and the front light blocking surface or the front reflecting surface relative to the light emitting direction of the light source, the left and right reflecting surfaces bordering the rear reflecting surface and the front light blocking surface correspondingly reflect the received light to the side front, and the light distribution in the front illumination area is jointly participated, so that the light distribution uniformity is further improved.

Thirdly, the light source irradiates downwards, and the combined application of the back reflecting surface, the front light blocking surface or the front reflecting surface and the left and right reflecting surfaces can effectively cut off the glare overflowing upwards and around the light source in the horizontal direction, so that the problem that unnecessary or overflowing light is emitted to the periphery to pollute the surrounding house or emit light to the sky above to cause nepheline is avoided, the light is ensured to irradiate to the area in the preset target, the light pollution is avoided, and the energy is also saved.

Fourth, because the reflective light source device in the embodiment of the present disclosure includes the rear reflective surface, the front light blocking surface or the front reflective surface, and the reflective surfaces on the left and right sides that are surrounded together to form a rectangular or square light outlet, each surface has a light interception function, and by combining the precise design of the included angle between each surface and the light emitting direction of the light source and/or the curvature of each surface, and the array of the light sources in the form of long-strip, the light beam range of the reflective light source device in the embodiment of the present disclosure, which is directed to the illuminated area (such as the designated area of the ground), is wider than the conventional floodlight, and has a rectangular shape with uniform brightness, and the light intensity at any point in the rectangular light beam range does not deviate from the average value too far. This allows the multi-lamp splice to be used for large area illumination while preventing both low-intensity gaps and overlapping high-intensity areas, thereby making the design and installation of the multi-lamp combination illumination very simple.

In summary, the reflective assembly, the reflective light-emitting device and the lamp provided by the embodiment of the disclosure solve the problem of uneven light distribution of the floodlight to the greatest extent, avoid light overflow, prevent glare, improve product universality, simplify installation and improve light efficiency. The reflective assembly, the reflective light-emitting device and the lamp provided by the embodiment of the disclosure can be applied to floodlights and can be popularized to multiple fields such as spot lights, wall washing lights and the like.

The foregoing is merely exemplary embodiments of the present disclosure and is not intended to limit the scope of the disclosure, which is defined by the appended claims.

Claims

1. A retroreflective assembly comprising:

a sidewall portion including a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall, wherein the first sidewall and the second sidewall are opposite to each other, the third sidewall and the fourth sidewall are opposite to each other, and the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall enclose a reflective cavity having a first opening and a second opening at opposite ends;

wherein the first opening is in a first reference plane, a first reference line perpendicularly intersects the first reference plane at a first intersection point in the first opening,

In a first cross-section of the reflector assembly coplanar with the first reference line and intersecting the first sidewall and the second sidewall, an inner surface of the first sidewall facing the reflector cavity has a first end point on the first reference plane and a second end point opposite the first end point, an inner surface of the second sidewall facing the reflector cavity has a third end point on the first reference plane and a fourth end point opposite the third end point,

The included angle between the first straight line segment connecting the first end point and the second end point and the part of the first reference plane overlapped with the first opening is a first included angle, the included angle between the second straight line segment connecting the third end point and the fourth end point and the part of the first reference plane overlapped with the first opening is a second included angle, and the first included angle is smaller than the second included angle.

2. The retroreflective assembly of claim 1 wherein the first included angle is in a range of 30 degrees or greater and 120 degrees or less.

3. The retroreflective assembly of claim 1 wherein the second included angle differs from the first included angle by 20 degrees or more.

4. The retroreflective assembly of claim 1 wherein the first sidewall intersects the first reference line.

5. The retroreflective assembly of claim 1 wherein, in a second cross-section of the retroreflective assembly coplanar with the first reference line and intersecting the third sidewall and the fourth sidewall, an interior surface of the third sidewall facing the reflective cavity has a fifth end point on the first reference plane and a sixth end point opposite the fifth end point, an interior surface of the fourth sidewall facing the reflective cavity has a seventh end point on the first reference plane and an eighth end point opposite the seventh end point,

An included angle between a third straight line segment connecting the fifth end point and the sixth end point and a part of the first reference plane overlapped with the first opening is a third included angle, an included angle between a fourth straight line segment connecting the seventh end point and the eighth end point and a part of the first reference plane overlapped with the first opening is a fourth included angle,

Wherein at least one of the first angle, the second angle, the third angle, and the fourth angle is adjustable.

6. The retroreflective assembly of claim 1 wherein,

At least a portion of the inner surface of at least one of the first and second sidewalls is concave curved surface protruding away from the reflective cavity.

7. The retroreflective assembly of claim 6 wherein the concave curved surface is a smooth curved surface.

8. The retroreflective assembly of claim 1 wherein,

In a second cross-section of the reflector assembly coplanar with the first reference line and intersecting the third and fourth sidewalls, an inner surface of the third sidewall facing the reflector cavity has a fifth end point on the first reference plane and a sixth end point opposite the fifth end point, an inner surface of the fourth sidewall facing the reflector cavity has a seventh end point on the first reference plane and an eighth end point opposite the seventh end point,

On the second cross section, the fifth end point is closer to the first reference straight line than the sixth end point, and the seventh end point is closer to the first reference straight line than the eighth end point.

9. The light reflecting assembly of any one of claims 1 to 8, wherein the inner surface of at least one of the first, second, third, and fourth sidewalls is entirely smooth.

10. The retroreflective assembly of any one of claims 1-8, wherein,

A portion of the inner surface of the second sidewall adjacent the third sidewall and a portion of the inner surface of the third sidewall adjacent the second sidewall are both within a first smooth curved surface; and/or

The portion of the inner surface of the second sidewall adjacent the fourth sidewall and the portion of the inner surface of the fourth sidewall adjacent the second sidewall are both within a second smooth curved surface.

11. The light reflecting assembly of any one of claims 1 to 8, wherein the inner surface of the second sidewall has at least one boss protruding toward the reflective cavity.

12. The light reflecting assembly of claim 11, wherein at least a portion of the boss is located on a side of the second straight segment facing the first sidewall in the first cross-section.

13. The retroreflective assembly of claim 12, further comprising a light transmissive panel adjacent to and covering the second opening.

14. The light reflecting assembly of any one of claims 1 to 8, wherein at least a portion of an outer surface of at least one of the first, second, third, and fourth sidewalls distal from the reflective cavity is planar.

15. The retroreflective assembly of any of claims 1-8, wherein the first linear segment has a length that is less than a length of the second linear segment.

16. A reflective light source device, comprising:

at least one retroreflective assembly according to any one of claims 1 to 15; and

A light source assembly coupled to the at least one light reflecting assembly, including an effective light emitting portion,

The direction of the luminous center line of the light source component is the same as an extending direction of the first reference straight line, and the first reference straight line is intersected with the effective luminous part of the light source component.

17. The reflective light source apparatus of claim 16, wherein the light source assembly comprises a circuit board and at least one light emitting device mounted on the circuit board, the at least one light reflecting assembly being coupled to the circuit board such that the at least one light emitting device is located within the reflective cavity of the at least one light reflecting assembly in a one-to-one correspondence.

18. The reflective light source device according to claim 16, wherein, in the first cross section, in a case where a straight line segment connecting the second end point of the first side wall and the fourth end point of the second side wall is parallel to the first reference plane, the second end point of the first side wall overlaps with an edge portion of the effective light emitting portion closest to the first end point in the extending direction of the first reference straight line.

19. The reflective light source device of claim 16, wherein,

The light emitted by the light source assembly passes through the reflecting cavity to form an illumination area on a second reference plane, wherein the second reference plane is positioned on one side of the at least one light reflecting assembly, which is opposite to the light source assembly, and the illumination area is provided with at least one pair of edges which are parallel to each other.

20. The reflective light source device of claim 19, wherein,

The illumination area is substantially rectangular or square in shape.

21. The reflective light source device of claim 16, wherein, in the first cross-section, the first sidewall is configured to reflect a first light ray from a luminous point of the light source assembly into a second light ray that intersects a reference line outside the reflective cavity, the reference line being a straight line passing through the luminous point and the fourth end point of the second sidewall.

22. The reflective light source device of any one of claims 16 to 21, wherein the first sidewall of the at least one light reflecting assembly and the effective light emitting portion of the light source assembly are configured to be rotatable relative to one another.

23. The reflective light source device according to any one of claims 16 to 21, wherein the effective light emitting portion of the light source assembly has a bar shape.

24. A luminaire, comprising:

At least one reflective light source device according to any one of claims 16 to 23; and

The lamp shade body is provided with at least one mounting part for mounting the at least one reflection type light source device in a one-to-one correspondence mode.

25. The luminaire of claim 24 wherein each of the light source mounting portions is configured to mount the corresponding reflective light source device in at least two different orientations.