CN114110534A

CN114110534A - Reflecting assembly, reflecting light source device and lamp

Info

Publication number: CN114110534A
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: 2022-03-01
Anticipated expiration: 2040-08-27
Also published as: CN114110534B

Abstract

Embodiments of the present disclosure provide a reflective 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 reflective 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 line perpendicularly intersects the first reference plane at a first intersection point within the first opening. An included angle between a first straight line segment connecting the first end point and the second end point and a part of the first reference plane overlapped with the first opening is a first included angle, an included angle between a second straight line segment connecting the third end point and the fourth end point and a 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

Reflecting assembly, reflecting light source device and lamp

Technical Field

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

Background

Floodlights are widely used in various indoor and outdoor lighting fields such as road tunnel lighting, airport and port lighting, municipal engineering lighting, urban landscape lighting, outdoor advertising lighting, stadium lighting, factory building warehouse lighting, and the like. Since these applications require uniform light distribution over a wide area and avoid unwanted glare as much as possible, the uniformity of light distribution and the anti-glare property become the main criteria for evaluating the quality of the floodlight. In addition, the convenience of debugging, the simplicity of installation and the light efficiency of floodlight are the problems that need to be solved in floodlight application.

Disclosure of Invention

An embodiment of the present disclosure provides a light reflecting assembly including a sidewall portion. The sidewall portion includes 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, the first sidewall, the second sidewall, the third sidewall and the fourth sidewall enclose a reflective cavity, and 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 line perpendicularly intersects the first reference plane at a first intersection point within the first opening. On a first cross section of the light reflecting member 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. An included angle between a first straight line segment connecting the first end point and the second end point and a part of the first reference plane overlapped with the first opening is a first included angle, an included angle between a second straight line segment connecting the third end point and the fourth end point and a 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 difference between the second included angle and the first included angle is greater than or equal to 20 degrees.

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

In one example, on a second cross-section of the reflector 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 and a sixth end point opposite the fifth end point on the first reference plane, and an inner surface of the fourth sidewall facing the reflective cavity has a seventh end point and an eighth end point opposite the seventh end point on the first reference plane. An 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 angle, and an 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 angle. At least one of the first included angle, the second included angle, the third included angle, and the fourth included angle is adjustable.

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

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

In one example, on a second cross-section of the reflector 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 and a sixth end point opposite the fifth end point on the first reference plane, and an inner surface of the fourth sidewall facing the reflective cavity has a seventh end point and an eighth end point opposite the seventh end point on the first reference plane. In 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 a smooth surface.

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 both lie within a first smooth curve; 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 both lie within a second smooth curve.

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

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

In one example, the light reflecting assembly further includes a light transmissive panel 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 that is distal from the reflective cavity is planar.

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

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

In one example, the light source assembly includes 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 positioned 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 sidewall and the fourth end point of the second sidewall is parallel to the first reference plane, the second end point of the first sidewall overlaps 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, light emitted by the light source assembly passes through the reflective cavity to form an illumination region 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 region 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, in the first cross-section, the first sidewall is configured to reflect a first ray from a light-emitting point of the light source module as a second ray that intersects a reference line outside the reflective cavity, the reference line being a straight line passing through the light-emitting 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 active 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 as described above; and the lampshade 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 manner.

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

To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below, and it should be apparent that the drawings described below only relate to some embodiments of the present disclosure and are not limiting on the present disclosure.

Fig. 1 is a schematic perspective view of a reflective light source device provided in an embodiment of the present disclosure from below;

fig. 2 is a schematic perspective view from the rear and below of a reflective light source device provided in an embodiment of the present disclosure;

fig. 3 is a schematic view of a planar structure of a reflective light source device according to an embodiment of the present disclosure, as viewed from bottom to top;

FIG. 4 is a schematic structural diagram of a reflective light source device provided by 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 light source apparatus including a reflective component in a first cross-section according to an embodiment of the disclosure;

fig. 6 is a schematic cross-sectional view of a reflective light source device according to an embodiment of the disclosure, in which the rear sidewall of the reflective light source device is located at a first position, fig. 6 is a schematic plan view of a first illumination area on a reference plane, and fig. 6 shows a schematic partial light path of light from a light source module reflected by a light reflecting component to the reference plane to form the first illumination area;

fig. 7 is a schematic cross-sectional view of a reflective light source device provided by an embodiment of the disclosure, in which the rear sidewall of the reflective light source device is located at a second position, the lower half of fig. 7 is a schematic plan view of a second illumination area on a reference plane, and fig. 7 is a schematic partial light path diagram illustrating light rays from a light source module being 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 apparatus provided by an embodiment of the present disclosure forming a first illumination region and a second illumination region on a reference plane;

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

fig. 10 is a schematic plan view illustrating a light source module 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, as viewed from above;

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

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

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly. The term "plurality" means two or more unless expressly limited otherwise. The term "coupled" is not limited to direct connections, but also includes indirect connections through intermediate members, unless expressly defined otherwise. Like or identical reference numerals refer to like or identical elements/objects throughout.

In the present disclosure, "parallel" of two linear elements does not limit that the two linear/planar elements must be strictly parallel, but allows for some deviation in the degree of parallelism of the two linear/planar elements. For example, the angle between two straight/planar elements parallel to each other is less than 2 °. In the present disclosure, "perpendicular" to two linear elements does not limit the angle between the two linear/planar elements to be strictly equal to 90 °, but allows a certain deviation of the parallelism of the two linear/planar elements. For example, the angle between two straight line elements perpendicular to each other may be in the range of 88 ° to 92 °.

Floodlights currently on the market generally have the following problems:

1. the existing commercially available floodlights are generally uneven in light distribution, the center of an illuminated area is bright, the periphery of the illuminated area is dark, the distance between the floodlights is close to a light source, the distance between the floodlights is far from the light source, the illuminated area is small, and the light beam range is circular, elliptical or irregular. Because floodlight grading is inhomogeneous, in order to make the whole illumination requirement that can both reach in the region that needs the illumination, when the multiple lamp combination illumination, then need carry out accurate simulation in advance and installation site direction debugging, make even through increasing lamps and lanterns quantity and be shone regional each point and can both reach the illumination requirement, the procedure is loaded down with trivial details, consuming time and wasting power, the cost-push, and shone regional light intensity inhomogeneous, seriously influence illuminating effect.

2. The current commercial floodlights are subject to serious light spillage problems. Except for the area needing to be irradiated, if the unwanted or overflowed light is emitted to the periphery, the light pollution to the surrounding house can be caused; if directed into the sky above, it results in a nepheline. Nepheline light is a type of light pollution that can damage the sky in the dark and can harm the health of humans and animals. And when the light does not reach the predetermined target, energy is wasted.

3. Most of the currently available floodlights are installed at a high position, designed so that the light source directly faces the illuminated area. Within the illuminated area, the light source is directly visible to the naked eye. The glare caused by the design not only causes uncomfortable visual sense, but also can interfere with the visual sense due to strong glare, 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 ahead clearly, and the glare of the lamplight on a football field can cause the player to lose the interest because the player cannot see the football clearly.

4. Floodlights currently available on the market have only one fixed lighting angle, which depends on the design of the reflector cup, reflector or lens to which they are applied. Different application occasions require different light-emitting angles, so that lamp manufacturers and distributors need to prepare product stocks according to different light-emitting angle requirements in advance if the lamp manufacturers and distributors want to shorten the delivery period. Due to the fact that the requirements of the light-emitting angles are various, product inventory can occupy considerable funds, the upgrading and updating speed of the light source is high, and the prepared inventory can become obsolete products if the prepared inventory cannot be sold in time. For the products with unusual light-emitting angles which are not in stock, the quantity of the products is small, so that the production or ordering of the reflecting cups, the reflecting covers or the lenses is difficult.

5. The existing commercially available floodlights are inconvenient to install. Floodlights are mostly installed at high places or on lamp posts, and high-altitude operation is needed during installation. When the spot debugging is carried out, because the floodlight distribution of the market is uneven, the angle is single, and the direction is single, the installer needs to debug the hanging direction and the angle of the floodlight many times on the mounting bracket in high altitude, and because of the limitation of the lamp post position and the mounting bracket, some directions can not be irradiated, and in order to reach the lighting requirement, a new lamp post must be added or the direction of the mounting bracket must be adjusted, so that the engineering quantity is greatly increased.

6. The floodlight using the reflecting cup or the reflecting cover on the market at present has low luminous efficiency.

The embodiment of the disclosure provides a light reflecting component, a reflective light source device and a lamp, so that the lamp irradiation range is wider, the lighting effect is higher, the light distribution is more uniform, the range of the emitted light beam is wider than that of a traditional floodlight, and the light beam is in a shape (such as a rectangle) with uniform brightness, so that the generation of low-brightness gaps is prevented when multiple lamps are spliced to illuminate in a large-range area, and the overlapped high-brightness area is also avoided. The light reflecting component, the light reflecting source device and the lamp in the embodiment of the disclosure also cut off useless light overflow, improve energy efficiency, avoid harmful glare, adjust light emitting angle in advance or in an installation site, and are not limited by a lamp post and a support, realize 360-degree dead-angle-free illumination in multi-direction and multi-angle combination, and enable the installation of the floodlight to be flexible, simple and convenient.

Fig. 1 and 2 are schematic perspective views of a reflective light source device provided in an embodiment of the present disclosure, as viewed from bottom to top; fig. 3 is a schematic view of a planar structure of a reflective light source device according to an embodiment of the present disclosure, as viewed from bottom to top; FIG. 4 is a schematic cross-sectional view of a reflective light source apparatus provided by an embodiment of the present disclosure at dashed line AA in FIG. 3; fig. 5 is a schematic view of a first cross-sectional structure of a reflective assembly 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 combined with each other.

The light reflecting member 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 and 4-2 may be directly connected or may be connected by other intermediate members. For example, the first sidewall 2, the second sidewall 3, the third sidewall 4-1, and the fourth sidewall 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 one body to which the first side wall 2 is rotatably connected. Embodiments of the present disclosure are not so limited. In another example, a portion of the first sidewall 2 may be formed as one piece with the second, third, and fourth sidewalls 3, 4-1, and 4-2, while another portion of the first sidewall 2 may be rotatably coupled to the one piece. In another example, at least a portion of at least one of the first sidewall 2, the second sidewall 3, the third sidewall 4-1, and the fourth sidewall 4-2 can be rotatably coupled to at least another one of the first sidewall 2, the second sidewall 3, the third sidewall 4-1, and the fourth sidewall 4-2. In yet another example, the first sidewall 2, the second sidewall 3, the third sidewall 4-1, and the fourth sidewall 4-2 are integrally formed and are not rotatable with respect 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 by, for example, the upper end edges of the inner surfaces of the first side wall 2, the second side wall 3, the third side wall 4-1, and the fourth side wall 4-2 facing the reflective cavity C; the second opening V2 is defined by, for example, lower end edges of the inner surfaces of the first side wall 2, the second side wall 3, the third side wall 4-1, and the fourth side wall 4-2 facing the reflective cavity C.

In the present embodiment, the first opening V1 is located, for example, within the reference plane P1 (i.e., an example of a first reference plane); that is, at least a portion of an upper end edge of an inner surface of each of the first, second, third, and

fourth sidewalls

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

In the present embodiment, the light source assembly S includes a 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, which is configured to carry the wiring board 7, for example, is located within the reference plane P1, for example, so that the wiring board 7 is supported on the upper end surface of the light reflecting member R when the light source assembly S and the light reflecting member R are joined together. At least a portion of the light emitting device 1 is positioned within 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 module S has, for example, a light emitting centerline direction. The light-emitting centerline direction of the light source module S is the light-emitting centerline direction of the light-emitting device 1, for example, a direction downward of a straight line R1 in fig. 4 and 5. The intensity of the light emitted by the light emitting device 1 in the direction of the light emitting center line is substantially maximum. For example, in the first cross section, the light-emitting centerline direction is also located at the substantial center of all the light rays emitted from 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 centerline direction of the light source assembly S is, for example, the 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-emitting center line direction is, for example, substantially perpendicular to the wiring board 1 and the reference plane P1. Here, the type of the light source assembly 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 relationships of the relevant members. The first reference straight line R1 may extend infinitely in two opposite directions of extension. An extending direction of the first reference straight line R1 is the same as the light emitting center line direction. For example, the first reference straight line R1 intersects the effective light-emitting portion of the light source assembly S. Here, the position at which the first reference straight line R1 intersects the effective light-emitting portion of the light source assembly S is not limited. In one example, the first reference straight line R1 intersects the center of the effective light emitting portion of the light source device S. In another example, the first reference straight line R1 intersects 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, the rear side wall 2 at least partially overlaps with the effective light emitting portion of the light source assembly S in the extending direction of the first reference straight line R1.

The first side wall 2 is, for example, a rear side wall 2 located at the rear side of the LED device 1, and its inner surface 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 reflection surface. For example, the first concave curved surface is a smooth curved surface or a curved surface formed by multiple sections of planes. However, 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 side wall 2 is rotatable, and the rear reflecting surface can extend downwards to the right below the LED device 1, so as to cut off at least part of glare emitted by the LED device 1 to the right below and the rear below, and reflect light emitted by the LED device 1 to the rear reflecting surface to the front below and the rear below, thereby improving the illumination uniformity of the illumination area.

The second side wall 3 is, for example, a front side wall 3 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 the 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 emitted forward by the light source. The second concave curved surface is, for example, a front light blocking surface or a front light reflecting surface. However, 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 yet 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, in the first cross section along the dotted line AA, the first curved surface and the second curved surface have different angles with the direction of the light emitting center line of the LED device 1.

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 on the left and right sides 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 reflective cavity C are, for example, flat surfaces or smooth curved surfaces as a whole, or curved surfaces formed by multiple sections of flat surfaces. The inner surfaces of the left side wall 4-1 and the right side wall 4-2 facing the reflective cavity C are left and right reflective surfaces, respectively, for example, to reflect light irradiated thereto by the LED device 1 to the front side. 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 directly facing the LED device 1.

The included angle between each light blocking surface or light reflecting surface and the light emitting direction of the light source can be designed elaborately, for example, the front light blocking surface or the front light emitting surface can prevent the light rays of the LED device 1 which directly emit to the illumination area or are reflected to the illumination area by the rear light reflecting surface or the left and right light reflecting surfaces as far as possible, so that the light efficiency is improved.

In the embodiment of the present disclosure, it may be designed that the reflection angle and the reflection path of the rear light reflecting surface and/or the left and right light reflecting surfaces and/or the front light blocking surface or the front light reflecting surface with respect to the light emitted from the light source may be adjusted, so as to adjust the light emitting angle of the reflective light source device, which is achieved by adjusting the included angle between the rear light reflecting surface and/or the left and right light reflecting surfaces and/or the front light blocking surface or the front light reflecting surface and the light emitting center line direction of the light source. For example, the angle between the rear light reflecting surface and the direction of the light emitting center line of the light source may be adjustable, the angles between the left and right light reflecting surfaces and the direction of the light emitting center line of the light source may be adjustable, the angle between the front light blocking surface or the front light reflecting surface and the direction of the light emitting center line of the light source may be adjustable, or the angles between any two or more of the rear light reflecting surface, the left and right light reflecting surfaces, the front light blocking surface or the front light reflecting surface and the direction of the light emitting center line of the light source may be individually adjustable. The present embodiment is described by selecting a design in which the included angle between the rear light-reflecting surface and the direction of the light-emitting center line can be adjusted.

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

In the reflective light source device RS according to 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 portions, or may be integrated, that is, designed as a whole, and some portions of the rear sidewall, the front sidewall, and the left and right sidewalls may be integrated, and the other portions are independent portions. The materials of the rear side wall, the front side wall, the left side wall and the right side wall can be selected from metal materials, plastics (metal-plated reflecting films), reflecting plastics, reflecting sticking films or reflecting coatings, or the combination of a plurality of materials. When some 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 assembly are facilitated. In the reflective light source device RS according to the embodiment of the disclosure, the rear sidewall, the front sidewall, and the left and right sidewalls surround a rectangular or square light outlet, which is the second opening V2 of the reflective cavity C.

For example, in the reflective light source device RS according to the embodiment of the disclosure, the light source device S is disposed on the top of the reflective component, the LED device 1 is located in a strip-shaped region along the rear reflective 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 close to the rear reflecting surface, and the short side is positioned at or close to the left and right reflecting surfaces. In the present embodiment, the LED device 1 is an elongated lattice of two rows of LEDs, as shown in fig. 1 and 8.

In the reflective light source device RS according to the embodiment of the present disclosure, the light emitting angle of the LED device 1 is, for example, 100 degrees to 160 degrees, and the strongest part of the light emitted from the LED device 1 is directly in front of the light source, whereas the LED device 1 in the reflective light source device RS according to the embodiment of the present disclosure is disposed on the top and irradiates downward, so that the strongest part of the light is directly below the LED device 1 in the reflective cavity C.

Here, the first cross section is coplanar with the first reference line R1 and intersects the rear sidewall 2 and the front sidewall 3. Referring to fig. 4, in the first section, the inner surface of the rear sidewall 2 facing the reflective cavity C (i.e., the rear light reflecting 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 (i.e., front light reflecting surface/front light blocking surface) of the second side wall 3 facing the reflective cavity C 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 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 less than the length of the second straight line segment. Note that, here, the first straight line segment and the second straight line segment are both virtual reference line segments (shown by broken lines in fig. 4 and 5) for explaining the positional and dimensional relationships of the relevant members.

For example, an angle between the first straight line segment and a portion of the first reference plane P1 overlapping the first opening V1 is a first angle α 1. The second straight line segment forms a second included angle α 2 with a portion of the first reference plane P1 overlapping the first opening V1. The first included angle α 1 is smaller than the second included angle α 1.

For example, the first 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 section, the orthogonal projection of the second end point E2 of the rear side wall 2 on the reference plane RP perpendicular to the direction of the light emission center line is closer to the orthogonal projection of the effective light-emitting portion of the light source assembly S on the reference plane RP 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 rear side wall away from the orthogonal projection of the effective light-emitting portion of the light source assembly on the reference plane RP, while the orthogonal projection of the fourth end point E4 of the front side wall 2 on the reference plane RP is located farther to the front side than the orthogonal projection of the effective light-emitting portion of the light source assembly on the reference plane RP. The rear side wall 2 in fig. 4 covers the entire effective light emitting portion of the light source assembly in the light emitting centerline direction.

Note that the reference plane RP is a virtual plane for explaining the positional and dimensional relationships of the relevant components of the light reflecting assembly and the light source assembly. The reference plane is, for example, parallel to reference plane P1 and/or reference plane P2 of the light reflecting assembly. Here, an area occupied by an orthogonal projection of the effective light emitting portion of the light source module 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 which are the same as the orthogonal projection of the effective light emitting portion of the light source assembly on the reference plane RP, and the position of the orthogonal projection of the effective light emitting portion of the light source assembly on the reference plane RP is completely coincident with the reference area RA.

Here, the effective light-emitting portion of the light source assembly refers to the portion of the light emitted by the light source assembly that is illuminated before it exits the light source assembly.

In the present embodiment, the rear side wall 2 is, for example, rotated 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 sidewall 2 on the reference plane may be located in the reference region RA or on the edge of the reference region RA close to the rear sidewall.

In the present embodiment, the rear side wall 2 can also be rotated 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, for example. 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 is located at a position toward the rear side outside the reference region.

In the embodiments of the present disclosure, the degree 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 centerline direction is not limited. The asymmetric design of the rear side wall 2 closer to the right below the effective light emitting portion of the light source assembly than the front side wall 3 can realize the adjustment of the direction of the light ray emitting reflection cavity from the light source assembly, so that the illuminated area has higher brightness uniformity.

As shown in fig. 1 to 5, in the reflective light source device RS according to the embodiment of the disclosure, the angle between the rear sidewall 2 and the light-emitting centerline of the light source module can be adjusted by the angle adjusting device.

Referring to fig. 1 to 5, the angle adjusting means may include a rotation shaft or hinge 5 and a catch 6. The rear side wall 2 rotates about a rotation shaft or hinge 5 near one end of the LED device 1, and the position of the rear side wall 2 is fixed by a card slot 6 provided at one end of the second opening V2 (i.e., a light exit). The draw-in groove 6 can set up a plurality of draw-in grooves, and after back lateral wall 2 rotated suitable position, one end that back lateral wall 2 was close to light-emitting port V2 can slide in certain draw-in groove position in the draw-in groove, and the contained angle between the luminous central line direction of back lateral wall 2 and light source subassembly is locked from this. By adjusting the included angle between the rear side wall 2 and the light-emitting central line direction of the light source component, the reflection angle and the reflection path of the light emitted by the rear reflection surface to 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 light-emitting central line of the light source component. For example, the included 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 light-emitting central line of the light source component can be respectively adjusted by the angle adjusting device.

In another example, the angle adjustment device may further include, but is not limited to: the gear replaces a 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 in combination with a remote control to remote control. The adjustment of the angle between each side wall and the direction of the light-emitting centerline of the light source module can also be achieved by a combination of the above-mentioned various ways. The design that the reflection angle and the reflection path of the light 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 simultaneously shortening the delivery date.

In yet another embodiment, the relative position between the various sidewalls of the light reflecting assembly is fixed, e.g., four sidewalls are integrally formed; the light source assembly S is, for example, rotatably mounted near the first opening V1. Therefore, the included angle between each side wall and the light-emitting central line direction of the light source component can be adjusted. The embodiment of the present disclosure does not limit the adjustment manner of the included angle.

In one example of the disclosed embodiment, the first sidewall 2 is configured to cover at least a portion of the effective light-emitting portion of the light source assembly S in the light-emitting centerline direction of the light source assembly S, and the second sidewall 3 is configured not to cover the effective light-emitting portion of the light source assembly S at all in the light-emitting centerline direction. In this way, glare caused by light rays emitted to the rear and directly below by the light emitting device can be better intercepted, and an illumination area with better brightness 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 at the first position provided by the embodiment of the disclosure, and the lower half is a plan view of the first illumination area on the reference plane RP, wherein a schematic partial light path of the light rays from the light source module reflected by the light reflecting component to the reference plane to form the first illumination area is shown; in fig. 7, the upper half is a schematic cross-sectional view of the reflective light source device RS provided by the embodiment of the disclosure with the rear sidewall at the second position, and the lower half is a plan view of the second illumination area on the reference plane, wherein a schematic partial light path of the light from the light source module reflected by the reflective assembly to the reference plane to form the second illumination area is shown.

In fig. 6 and 7, for the sake of clarity and simplicity of the drawings, 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 the light emitted from the light emitting point.

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

Referring to fig. 6, when the rear side wall 2 is in the first position, the second distal end point E2 of the rear side wall 2 overlaps with the edge of the effective light-emitting portion of the LED device 1 closest to the first distal end point E1 in the light-emitting centerline direction of the light source assembly S. By using the rear reflecting surface 2, the light with larger light intensity emitted by the LED device 1 is reflected by the rear reflecting surface to change the path and is emitted forward, so that the light is more uniform. Furthermore, most of the light rays directed directly to the rear are also blocked by the rear sidewall to intercept the glare that may be generated.

Referring to fig. 7, when the rear side wall 2 is in the second position, the second end point E2 of the rear side wall 2 overlaps with the edge of the effective light emitting portion of the LED device 1, which is farthest from the rear side wall 2, in the light emitting centerline direction of the light source assembly S. At this time, the rear side wall 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 located at the first position shown in fig. 6, when the rear side wall 2 is located at the second position, the light rays with larger light intensity emitted from the LED device 1 to the right below are reflected more by the rear reflection surface to change the path and emit forward, so that the emitted light is more uniform. In addition, most of the light directly to the rear and directly below is blocked by the rear sidewall to intercept the glare that may be generated.

Referring to fig. 6, the light from the LED device 1 exits 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 the reflective cavity C to form a second illumination area M2 on the reference plane RP. The first and second illumination regions 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 2, front 3, left 4-1 and right 4-2 side walls are configured to define the location of a first edge G1, a second edge G2, a third edge G3 and a fourth edge 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 embodiments of the present disclosure, the specific shapes of the first and second illumination regions M1 and M2 are not limited. For example, the first and second illumination regions M1 and M2 may be rectangles, parallelograms, or the like having rounded corners.

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 edge G1 and the second edge G2 of the illumination area on the reference plane RP are straight lines that are parallel to each other, and the third edge G3 and the fourth edge G4 are not parallel.

Since the reflective light source device RS provided by the embodiments of the present disclosure forms an illumination area 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 larger illumination area that is substantially seamless and uniform in brightness.

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 reflective cavity C. In the first section, the second reference line R2 is a straight line passing through the light emitting point and the fourth end point E4 of the front sidewall 3. Here, the second reference straight line R2 is a virtual straight line for describing the positional and dimensional relationship of the relevant members. In fig. 7, a second intersection point of the second light line 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 be located more forward by the second light L2, thereby enlarging 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, a 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 a 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 therefore, the effect of the increase in the second illumination area M2 than the corresponding first illumination area M1 due to the intersection of the light ray L2 with the second reference straight line R2 is more significant. 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 that, in the reflective light source device RS provided in the embodiment of the present disclosure, effective control of 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 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 which intersect the second reference line outside the reflective cavity.

For example, in the reflective light source device according to the embodiment of the disclosure, the curvature of the concave surface formed by the concave curved surface or the multiple sections of planes of the back reflective surface and the included angle between the back reflective surface and the front light blocking surface or the front reflective surface may be elaborately designed to only allow light to be reflected once on the back reflective surface as much as possible, so as to prevent the back reflective surface from reflecting the light to the front light blocking surface or the front reflective surface, or to prevent the back reflective surface from reflecting the light to the left and right reflective surfaces, so as to reduce secondary reflection, thereby improving the light efficiency. In the reflective light source device according to the embodiment of the disclosure, the distance between the left and right reflective surfaces gradually increases from the end close to the light source to the end of the light outlet of the reflective assembly, 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 elaborately designed to avoid light from performing secondary reflection between the left and right reflective surfaces or being reflected to other reflective surfaces as much as possible, thereby further improving the light efficiency. Through this kind of design, the reflection of light subassembly of this disclosed embodiment can improve light efficiency by about 8%.

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

In the reflective light source device provided by the embodiment of the present disclosure, for example, referring to fig. 9, at least a portion of the inner surfaces of the left sidewall 4-1 and the right sidewall 4-2 facing the reflective cavity C is a plane.

Referring to fig. 9, in the second 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 the seventh end point E7.

In the second section, an angle between a third straight line segment connecting the fifth end point E5 and the sixth end point E6 of the inner surface of the left side wall 4-1 and a portion of the first reference plane P1 overlapping the first opening V1 is a third angle α 3; an angle between a 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 and a portion of the first reference plane P1 overlapping the first opening V1 is a fourth angle α 4. Note that the first straight line segment and the second straight line segment are both virtual reference line segments for explaining the positional and dimensional relationships of the relevant members.

For example, at least one of first included angle α 1, second included angle α 2, third included angle α 3, and fourth included angle α 4 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 a smooth surface as a whole. 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 a smooth surface as a whole. The smooth surface may be a smooth flat surface, a smooth curved surface, or a combination of both. Here, "smooth" means without sharp edges and corners being evident.

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

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 to 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 to 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, there may be a gap between a portion of the inner surface of the front sidewall 3 adjacent to the left sidewall 4-1 and a portion of the inner surface of the left sidewall 4-1 adjacent to the front sidewall 3; there may be a gap between the portion of the inner surface of the front sidewall 3 adjacent to the right sidewall 4-2 and the portion of the inner surface of the right sidewall 4-2 adjacent to the front sidewall 3.

In the reflective light source device RS of the embodiment of the present 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, especially a high-power light emitting diode, or an LED integrated light source, such as an integrated LED lamp bead, or a COB light source. Referring to fig. 10 and 11, when these light emitting devices are used, the light emitting device 1 is generally mounted on a wiring board 7, which may be made of a copper substrate, an aluminum substrate, an FR-4 epoxy glass cloth laminate, a ceramic substrate, or the like. The top opening V1 of the light reflecting member R is used to dispose the light emitting device 1 when the light emitting device 1 is mounted on a wiring board which is covered over the opening V1 or placed in the area of the opening V1. The wiring board 7 may be integrated with the reflector assembly to change its orientation as the orientation of the reflector assembly changes. For example, the circuit board does not extend beyond the boundaries of the horizontal cross-section of the reflector assembly and does not prevent seamless splicing of multiple individual reflector assemblies.

For example, at least a portion of an outer surface of at least one of the rear, front, left, and right sidewalls away from the reflective cavity is planar; for example, at least a portion of an outer surface of at least one of the rear sidewall, the front sidewall, the left sidewall, and the right sidewall that is distal 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 that are distal 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 that are distal 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 that are distal from the reflective cavity are perpendicular to at least a portion of the outer surfaces of the rear and front sidewalls that are distal from the reflective cavity.

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

The circuit board of the light source assembly S of the reflective light source device RS of the embodiment of the present disclosure may further include a circuit board positioning hole X, and a 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 assembly R, together with the circuit board 7 and the light emitting device 1, to the lampshade body.

The reflective assembly R of the reflective light source device RS of the disclosed embodiment may further include a positioning pin 9, see fig. 2 and 5. The height of the positioning bolt 9 is less than or equal to the thickness of the circuit board 7, and the positioning bolt can be inserted into the positioning hole X of the circuit board correspondingly to accurately embed the main body of the light reflecting component with the circuit board. The positioning pin 9 can extend from the side wall of the main body of the light reflecting component forming the positioning hole 8 and is inserted into the positioning hole 9 of the circuit board.

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

In the reflective light source device RS according to the embodiment of the present disclosure, the reflective assembly body may further have an opening 10, so that a wire or a plug soldered on a circuit board can pass through the opening. The opening may be in one side wall portion or in a plurality of side wall portions; the opening 10 can be a smaller slot or can be hollowed out over a larger area.

The reflective light source device RS according to another embodiment of the disclosure 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 interfered. Here, the specific material of the light-transmitting plate 11 is not limited.

With respect to the light reflecting member in the reflective light source device RS shown in fig. 12, the characteristics of the other parts 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 reflective 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 reflective cavity C has a boss 12 protruding toward the reflective 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 section shown in fig. 12, at least a portion of said projection 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 close to the side wall portion 2. A second straight line segment between the third end point E3 and the fourth end E4 of the front sidewall 3 intersects the lobe 12. Here, a 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 itself may reflect a part of the light to the front reflection surface, and the reflected light is reflected by the front reflection surface with the biconcave curved surface design formed with one convex portion 12, so that the light reflected by the glass plate 11 to the front reflection surface can be reflected again to the area to be irradiated, as shown by the arrow in fig. 12. For example, each concavity may be made up of a number of repeating units, which may be polygonal shaped flats or dimples, such as resembling a golf ball 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 combination of the light source assemblies S and the light emitting assemblies R.

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

Each reflective light source device RS can be mounted to the lamp housing body 20 in at least two mounting orientations, for example. For example, referring to fig. 13, the lampshade body 20 is substantially parallel to the ground, and the four reflective light source devices RS are all mounted on the lampshade body 20 in a first orientation. Thus, the light emitted from the lamp LT is emitted toward the front lower side of the lamp LT, and a rectangular illumination area is formed at a position forward from the front side directly below the lamp LT, for example. The four reflective light source devices RS can also be mounted on the lampshade body 20 in the second orientation. Thus, the light emitted from the lamp LT is emitted toward the lower left of the lamp LT, and a rectangular illumination area is formed at a position just below the lamp LT and to the left, for example. The four reflective light source devices RS can also be mounted on the lampshade body 20 in the third direction. Thus, the light emitted from the lamp LT is emitted toward the lower right 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 respectively disposed at different mounting orientations. Therefore, the lamp of the present disclosure can realize accurate regulation and control of the position and range of the illumination area only by adjusting the installation direction of the reflective light source device or independently adjusting the rear sidewall of each reflective component without changing the installation position of the lampshade body.

Because the reflective light source device of the embodiment of the disclosure is designed to irradiate the light source surface downwards, and the light-emitting direction is the oblique light-emitting direction, the reflective light source device of 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 without changing the installation directions of the lampshade body installation base and the lampshade body, thereby changing the light-emitting direction of the lamp. Moreover, a plurality of independent reflection-type light source devices can be flexibly spliced and combined into a large reflection-type light source device which is arranged in a large lampshade body, wherein each independent reflection-type light source device can rotate in the horizontal direction by 360 degrees to be arranged into different light emitting directions, and simultaneously, the reflection angle and the reflection path of light emitted by a light source can be adjusted, and each independent reflection-type light source device can be adjusted into different light emitting angles, so that the light emitting directions and the light emitting angles of the combined large reflection-type light source device can be flexibly combined, therefore, under the condition that the installation directions of the lampshade body installation base and the lampshade body are not changed, the whole lamp can irradiate towards any direction around or all around, and even the light intensity ratio and the irradiation range in each direction can be randomly modulated to achieve the specific integral illumination requirement, this makes the whole lamp no longer receive the restriction of lamp pole and installing support, has solved the inconvenient problem of market floodlight installation.

The outer surface of at least one of the front side wall, the left side wall and the right side wall of the light reflecting component far away from the reflecting cavity is a plane. For example, the outer surface of the reflector assembly provided by the embodiment of the present disclosure may be rectangular, and particularly may be square, in a horizontal cross section (e.g., a cross section parallel to the reference plane RP), which is more advantageous to seamlessly splice and combine a plurality of reflector assemblies into one large reflector assembly, and particularly when the reflector assembly is designed to be square, the horizontal rotation (90 degrees rotation at each time) of the reflector assembly does not change the occupation of the reflector assembly on the lamp body mounting base, so that the installation position of the reflector assembly is the same no matter which direction the reflector assembly emits light, which greatly improves the installation compatibility of the reflector assembly.

The embodiment of the present disclosure provides a light reflecting component, a reflective light emitting device and a lamp, which 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 can hardly be observed directly under the light emitting device of the reflective light source device provided by the embodiment of the disclosure with naked eyes, and the light source is hidden under the shielding of the rear sidewall. Since the rear wall, the left and right side walls, and the front wall completely surround the side surface of the light source by 360 degrees, the light source cannot be observed with the naked eye under the side in any direction of the light 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 in many angles, the light entering the eye is the light reflected by the reflective surface, and the strongest light emitted by the light source is reflected to a larger area by the reflective surface, so the light intensity of the reflected light is much smaller than that of the direct-view light source. Even if the light source can be observed at a certain angle of the illuminated area, the light source can not be directly seen in front of the light source, but only the side surface of the light source can be seen, so that the light source is not too dazzling. In conclusion, the design avoids glare caused by 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 drivers cannot see the road conditions ahead clearly due to the glare emitted by street lamps or loss of interest caused by the fact that players cannot see the positions of the football clearly due to the glare of lamplight on football fields.

Secondly, when the design that the light source of the traditional floodlight faces the lighting area is adopted, if the floodlight irradiates downwards from a high position in an inclined mode, the light with the same light intensity is distributed in a relatively small range at a position close to the light source, and the light with the same light intensity is distributed in a relatively large range at a position far away from the light source, so that uneven light distribution is caused. In the embodiment of the disclosure, the light source irradiates downwards, the light-emitting direction emits light obliquely, and the light irradiated to the back reflecting surface can be reflected by the back reflecting surface to change the path to irradiate forwards due to the elaborately designed concave surface of the back reflecting surface or the concave surface formed by multiple sections of planes, so that the light is mixed with the light emitted by the light source and directly irradiates a forward irradiated area without being reflected, part of the light with the maximum light intensity emitted in the front of the light source is reflected to the far front by the back reflecting surface, the light far from the front of the reflection-type light source device is compensated, and the forward illuminating area with uniform light distribution is formed. Due to the asymmetrical design of the rear light reflecting surface and the front light blocking surface or the front light reflecting surface relative to the light emitting direction of the light source, the light reflecting surfaces on the left side and the right side, which are connected with the rear light reflecting surface and the front light blocking surface, can correspondingly reflect the received light to the front side, so that the light distribution in a front illumination area is jointly participated, and the uniformity of the light distribution is further improved.

Thirdly, the light source irradiates downwards, and the combined application of the rear 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 which overflows from the light source upwards and in the peripheral horizontal direction, thereby avoiding the light pollution to the surrounding house caused by the unnecessary or overflowing light which is emitted to the periphery or the light which is emitted to the sky above to cause the light-shading, ensuring that the light irradiates to the area within the preset target, avoiding the light pollution and saving the energy.

Fourthly, in the reflective light source device according to the embodiment of the present disclosure, the rear light reflecting surface, the front light blocking surface or the front light reflecting surface, and the left and right light reflecting surfaces together enclose a rectangular or square light outlet, each surface has a light ray cutting effect, and in addition, the precise design of the included angle between each surface and the light outlet direction of the light source and/or the curvature of each surface is combined, and the linear lattice arrangement of the light source is combined, so that the light beam range of the reflective light source device according to the embodiment of the present disclosure, which is directed to the illuminated area (for example, the designated area on the ground), is wider than that of the conventional floodlight, and is a rectangle with uniform brightness, and the light intensity at any point in the rectangular light beam range does not deviate too far from the average value. This allows the multi-lamp split large area illumination to avoid both low brightness gaps and overlapping high brightness areas, thereby making the design and installation of the multi-lamp combination illumination very simple.

To sum up, the problem of uneven light distribution of the floodlight is solved to the greatest extent by the light reflecting component, the reflective light-emitting device and the lamp, light overflow is avoided, glare is avoided, product universality is improved, installation is simplified, and light efficiency is improved. The reflecting component, the reflecting type light-emitting device and the lamp provided by the embodiment of the disclosure can be applied to floodlights, and can be popularized to various fields such as spot lights and wall washing lights.

The above description is intended to be exemplary of the present disclosure, and not to limit the scope of the present disclosure, which is defined by the claims appended hereto.

Claims

1. A light reflecting 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, wherein the third sidewall and the fourth sidewall are opposite to each other, wherein 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 within the first opening,

on a first cross section of the light reflecting member 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, 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,

an included angle between a first straight line segment connecting the first end point and the second end point and a part of the first reference plane overlapped with the first opening is a first included angle, an included angle between a second straight line segment connecting the third end point and the fourth end point and a 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 reflector 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 reflector assembly of claim 1 wherein the difference between the second included angle and the first included angle is greater than or equal to 20 degrees.

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

5. The light reflecting assembly according to claim 1 wherein, on a second cross section of the light reflecting assembly coplanar with the first reference line and intersecting the third and fourth sidewalls, 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, 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, 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 included angle, the second included angle, the third included angle, and the fourth included angle is adjustable.

6. The reflective assembly of claim 1,

at least a portion of the inner surface of at least one of the first sidewall and the second sidewall is a concave curved surface that is convex away from the reflective cavity.

7. The reflector assembly as set forth in claim 6 wherein the concave curved surface is a smooth curved surface.

8. The reflective assembly of claim 1,

on a second cross-section of the light reflecting member coplanar with the first reference line and intersecting the third and fourth sidewalls, 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, 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,

in 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 reflective assembly of any one of claims 1-8, wherein the interior surface of at least one of the first, second, third and fourth sidewalls is entirely smooth.

10. The reflective assembly according to any one of claims 1 to 8,

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 both lie within a first smooth curve; 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 curve.

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

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

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

14. The reflective assembly of any one of claims 1-8, 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 reflective assembly of any one of claims 1 to 8, wherein the first linear segment has a length less than a length of the second linear segment.

16. A reflective light source device comprising:

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

a light source assembly combined with the at least one light reflecting assembly, including an active light emitting portion,

the direction of the light-emitting central line of the light source component is the same as the extending direction of the first reference straight line, and the first reference straight line is intersected with the effective light-emitting part of the light source component.

17. The reflective light source apparatus according to claim 16, wherein said light source assembly comprises a circuit board and at least one light emitting device mounted thereon, said at least one said reflector assembly being bonded to said circuit board such that said at least one light emitting device is positioned within said reflective cavity of said at least one reflector assembly in a one-to-one correspondence.

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

19. The reflective light source device according to claim 16,

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

20. The reflective light source device according to claim 19,

the illumination area is substantially rectangular or square in shape.

21. The reflective light source device according to claim 16, wherein, in said first cross-section, said first sidewall is configured to reflect a first light ray from a luminous point of said light source module as a second light ray, said second light ray intersecting a reference line outside said reflective cavity, said reference line being a straight line passing through said luminous point and said fourth end point of said second sidewall.

22. The reflective light source device according to any one of claims 16 to 21, wherein said first side wall of said at least one light reflecting assembly and said active light emitting portion of said light source assembly are configured to be rotatable relative to each other.

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

24. A light fixture, comprising:

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

the lampshade 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 manner.

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