Light emitting structure and lighting fixture

Abstract

The application belongs to the technical field of lighting lamps and lanterns, and relates to a light-emitting structure and a lighting lamp thereof. The light-emitting structure comprises a light source, a light-reflecting cup, and an anti-dazzle cover. The light source is located at the bottom of the light-reflecting cup. The anti-dazzle cover is connected to one end of the light-reflecting cup away from the light source. The light emitted by the light source comprises first light and second light. The first light directly exits the light-reflecting cup. The second light exits the anti-dazzle cover after being reflected by the inner wall of the light-reflecting cup. The first light and the second light are both away from the anti-dazzle cover. The light-emitting structure is provided with the anti-dazzle cover, so that the UGR value of the light-emitting structure is low. The first light and the second light are both away from the anti-dazzle cover, and cannot hit the anti-dazzle cover. Therefore, the light-emitting structure can reduce the UGR value, and effectively avoid that a user sees a light halo existing in the opening of the anti-dazzle cover outside the irradiation range of the light, and then avoid dazzling.

Description

Technical Field

[0001] This application relates to the field of lighting fixture technology, and more specifically, to a light-emitting structure and a lighting fixture. Background Technology

[0002] In existing technologies, to avoid discomfort to the human eye caused by lighting fixtures in indoor lighting environments, it is necessary to minimize their UGR (Uniform Glare Ratio). To effectively reduce the UGR value, lighting fixtures are usually equipped with anti-glare shields.

[0003] Existing lighting fixtures typically consist of a light source, a reflector, and an anti-glare shield. While the anti-glare shield can reduce glare to some extent, it also has limitations. Figure 1 As shown, even after the light emitted by the light source is reflected by the reflector, some light will still be reflected to the edge of the anti-glare shield's opening. Therefore, if the lighting fixture is installed on the ceiling or similar location, and the user looks at the fixture from outside its beam, they will still see glaring light at the edge of the anti-glare shield.

[0004] Therefore, existing technologies cannot reduce UGR while preventing the edge of the anti-glare shield from reflecting light and affecting the user's vision. Utility Model Content

[0005] The technical problem to be solved by the embodiments of this application is that the prior art cannot reduce UGR while avoiding the reflection of light from the edge of the anti-glare shield, which would affect the user's vision.

[0006] To solve the above-mentioned technical problems, the embodiments of this application adopt the following solutions:

[0007] A light-emitting structure, the light-emitting structure comprising:

[0008] light source;

[0009] A reflector cup, wherein the light source is located at the bottom of the reflector cup;

[0010] An anti-glare shield is attached to the end of the reflector that is furthest from the light source;

[0011] The light emitted by the light source includes a first light and a second light. The first light is emitted directly from the reflector cup, and the second light is emitted from the anti-glare shield after being reflected by the inner wall of the reflector cup. Both the first light and the second light are separated from the anti-glare shield.

[0012] Furthermore, the anti-glare shield has an opening at the end away from the light source, the opening being used to allow light to pass through the anti-glare shield, the light source having a first point, the opening having a second point, and the distance between the first point and the second point being the farthest distance from the light source to the opening;

[0013] Along the direction from the first point to the second point, the horizontal distance from the first point to the rim of the reflector cup is the first horizontal distance, the horizontal distance from the rim of the reflector cup to the second point is the second horizontal distance, the vertical distance from the first point to the rim of the reflector cup is the first vertical distance, the vertical distance from the rim of the reflector cup to the second point is the second vertical distance, the ratio of the first vertical distance to the first horizontal distance is the first ratio, the ratio of the sum of the first vertical distance and the second vertical distance to the second horizontal distance is the second ratio, and the first ratio is greater than the second ratio.

[0014] Furthermore, the ratio of the first ratio to the second ratio is (0 to 0.25).

[0015] Furthermore, the light source is a Lambertian light emitter, and the opening is an annular opening; and / or,

[0016] The inner wall of the reflector cup is a smooth curved surface.

[0017] Furthermore, the outer wall of the reflector cup is provided with a first rib and a second rib. The first rib is arranged along the circumference of the reflector cup, and the second rib is connected to the two ends of the first rib in the circumferential direction and forms an angle with the first rib between the second rib and the side wall of the reflector cup.

[0018] Furthermore, the included angle is 45° to 135°.

[0019] Furthermore, the reflector cup includes a plurality of first ribs and a plurality of second ribs, and also includes a mounting part. The mounting part is located between two adjacent second ribs on adjacent first ribs and is connected to the second ribs. The mounting part is provided with mounting holes, and the depth direction of the mounting holes is the same as the depth direction of the reflector cup.

[0020] Furthermore, the inner wall of the anti-glare shield is provided with a limiting part, and a limiting groove is formed between two adjacent second ribs on adjacent first ribs, and the limiting part is engaged in the limiting groove.

[0021] Furthermore, the inner wall of the reflector cup is provided with a reflective surface, which is used to reflect the light from the light source, and the reflective surface is provided with an electroplated layer.

[0022] Accordingly, this application also provides a lighting fixture, which includes the light-emitting structure described in any one of the above embodiments.

[0023] Compared with the prior art, the embodiments of this application have the following main advantages:

[0024] The light-emitting structure is equipped with an anti-glare shield, resulting in a low UGR value. Since both the first and second light rays are separated from the anti-glare shield, they do not strike it. Therefore, the light-emitting structure reduces the UGR value and effectively prevents users from seeing halos around the anti-glare shield opening outside the light's illumination range, thus avoiding glare. Attached Figure Description

[0025] To more clearly illustrate the solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is an exploded view of the light-emitting structure of this application;

[0027] Figure 2 This is a schematic diagram of the light-emitting structure of this application;

[0028] Figure 3 This is a schematic diagram of the reflector in the light-emitting structure of this application;

[0029] Figure 4 This is a schematic diagram of the anti-glare shield in the light-emitting structure of this application.

[0030] Figure label:

[0031] First light beam 10, second light beam 20, anti-glare cover 100, opening 101, reflector cup 200, reflective surface 201, first rib 210, second rib 220, mounting part 230, mounting hole 231, light source. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application.

[0033] In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in its actual use or operating state, specifically the orientation shown in the accompanying drawings; while "inner" and "outer" refer to the outline of the device. Furthermore, in the description of this application, the term "comprising" means "including but not limited to". The terms first, second, third, etc., are used merely as illustrative purposes and do not impose numerical requirements or establish a numerical order.

[0034] In this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural.

[0035] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one," "at least one of the following," or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, "at least one of a, b, or c," or "at least one of a, b, and c," can both mean: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can be single or multiple.

[0036] Various embodiments of this application may exist in the form of a range; it should be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as a hard limitation on the scope of this application; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single numerical values ​​within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Furthermore, whenever a numerical range is referred to herein, it means including any referenced number (fraction or integer) within the referred range.

[0037] Please refer to Figures 1-4 A light-emitting structure, the light-emitting structure comprising:

[0038] light source;

[0039] Reflector cup 200, with the light source located at the bottom of reflector cup 200;

[0040] Anti-glare shield 100, the anti-glare shield 100 is connected to the end of reflector 200 away from the light source;

[0041] The light emitted by the light source includes a first light 10 and a second light 20. The first light 10 is emitted directly out of the reflector cup 200, and the second light 20 is emitted out of the anti-glare shield 100 after being reflected by the inner wall of the reflector cup 200. Both the first light 10 and the second light 20 are separated from the anti-glare shield 100.

[0042] In this embodiment, because the light-emitting structure is equipped with an anti-glare shield 100, the UGR value of the light-emitting structure is low. Meanwhile, as... Figure 2 As shown, the first ray 10 and the second ray 20 emitted by the light source are both separated from the anti-glare shield 100. That is, the first ray 10 and the second ray 20 are both within the range of the anti-glare shield 100 and will not hit the anti-glare shield 100. Therefore, the light-emitting structure can effectively prevent users from seeing a halo around the opening 101 of the anti-glare shield 100 outside the illumination range of the light, thereby avoiding glare.

[0043] Further, please refer to Figure 2 An opening 101 is provided at the end of the anti-glare shield 100 away from the light source. The opening 101 is used to allow light to pass through the anti-glare shield 100. The light source is provided at a first point, and the opening 101 is provided at a second point. The distance between the first point and the second point is the farthest distance from the light source to the opening 101.

[0044] Along the direction from the first point to the second point (X direction in the figure), the horizontal distance from the first point to the rim of the reflector cup 200 is the first horizontal distance (A in the figure), the horizontal distance from the rim of the reflector cup 200 to the second point is the second horizontal distance (B in the figure), the vertical distance from the first point to the rim of the reflector cup 200 is the first vertical distance (C in the figure), the vertical distance from the rim of the reflector cup 200 to the second point is the second vertical distance (D in the figure), the ratio of the first vertical distance to the first horizontal distance is the first ratio (C / A), the ratio of the sum of the first vertical distance and the second vertical distance to the second horizontal distance is the second ratio ((C+D) / B), and the first ratio is greater than the second ratio.

[0045] In this embodiment, when the first ratio is greater than the second ratio, the geometric relationship formed by the depth of the reflector cup 200, the size of the cup opening of the reflector cup 200, and the distance between the light source and the opening 101 can make the first light ray 10 and the second light ray 20 separate from the anti-glare shield 100. That is, the horizontal projection length of the light reflection path inside the reflector cup 200 is greater than the horizontal projection length of the light path in the area of ​​the anti-glare shield 100.

[0046] It should be understood that the first point should be understood as the point at the minimum emission angle of the light source. For example, when the light source is as follows... Figure 2 When using the spherical light source shown, the first point is located at the connection between the spherical light source and the bottom of the reflector 200, and the second point is located on the cross-section formed by the first point and the central axis of the light source (i.e., Figure 2(as shown in the plane), at this time the distance between the second point and the first point is the farthest distance from the light source to the opening 101.

[0047] For further details, please refer to... Figures 1-3 The ratio of the first ratio to the second ratio is (0 to 0.25).

[0048] In this embodiment, the ratio range of the first ratio and the second ratio allows for a gap between the first light ray 10 and the second light ray 20 and the opening 101 of the anti-glare shield 100. This gap range can both prevent the overall range of light rays emitted from the anti-glare shield 100 from being too small and provide sufficient margin for the light rays to flow out separately from the anti-glare shield 100, so as to avoid light rays hitting the anti-glare shield 100 due to errors in the installation of the light-emitting structure.

[0049] Furthermore, such as Figures 1-2 The light source is a Lambertian light source, and the opening 101 is an annular opening; and / or,

[0050] The inner wall of the reflector cup 200 is a smooth curved surface.

[0051] In this embodiment, when the light source is a Lambertian light emitter and the opening 101 is an annular opening, the light emitted from the light-emitting structure onto the anti-glare shield 100 is circular. The emitted light can cooperate with the annular opening, allowing users to consider only one cross-section (e.g., ...) during design and manufacturing. Figure 2 The positional relationship between the first and second points on the light source (the first and second points on other cross sections can be obtained by rotating around the central axis of the light source) is determined, thereby improving the production efficiency of the light-emitting structure. When the inner wall of the reflector cup 200 is a smooth curved surface, the second light ray 20 is reflected by the inner wall of the reflector cup 200 and can be reflected according to a preset rule to avoid irregular stray light hitting the anti-glare cover 100 during reflection.

[0052] For further details, please refer to... Figures 1-4 The outer wall of the reflector cup 200 is provided with a first rib 210 and a second rib 220. The first rib 210 is arranged along the circumference of the reflector cup 200, and the second rib 220 is connected to the two ends of the first rib 210 in the circumferential direction and forms an angle with the first rib 210 between the side walls of the reflector cup 200.

[0053] In this embodiment, the first rib 210 can prevent the reflector cup 200 from deforming in the circumferential direction (circular direction around the Z axis) through its own strength, and the second rib 220 can prevent the reflector cup 200 from deforming in the axial direction (Z direction) through its own strength. Therefore, the first rib 210 and the second rib 220 can jointly improve the overall strength of the reflector cup 200, thereby improving the service life of the light-emitting structure.

[0054] Furthermore, the included angle is 45° to 135°.

[0055] In this embodiment, when the included angle range is 45° to 135°, the included angle formed between the second rib 220 and the first rib 210 between the side walls of the reflector cup 200 is similar to an L-shaped reinforcing rib structure. The two can respectively alleviate the forces (circumferential force and axial force) in two directions close to the vertical range, thereby effectively improving the overall strength of the reflector cup 200.

[0056] For further details, please refer to... Figures 1-4 The reflector cup 200 includes a plurality of first ribs 210 and a plurality of second ribs 220, and also includes a mounting part 230. The mounting part 230 is located between two adjacent second ribs 220 on adjacent first ribs 210 and is connected to the second ribs 220. The mounting part 230 is provided with mounting holes 231, and the depth direction of the mounting holes 231 is the same as the depth direction of the reflector cup 200.

[0057] In this embodiment, the mounting part 230 can both connect the adjacent second ribs 220 to prevent the second ribs 220 from deforming, and support the mounting hole 231 so that the reflector cup 200 can be connected to external devices (ceiling, lamp holder, etc.) through the mounting hole 231 (such as threaded connection), thereby improving the structural strength and installation efficiency of the light-emitting structure.

[0058] For further details, please refer to... Figures 1-3 The inner wall of the anti-glare shield 100 is provided with a limiting part (not shown in the figure), and a limiting groove is formed between two adjacent second ribs 220 on adjacent first ribs 210, and the limiting part is locked in the limiting groove.

[0059] In this embodiment, when the reflector cup 200 and the anti-glare cover 100 are connected, the limiting part can be aligned with the limiting groove in the Z-direction direction along the path, and then the two can be brought together for connection. At this time, the limiting part and the limiting groove can play a role in positioning and guiding the connection, thereby improving the assembly efficiency and assembly accuracy of the light-emitting structure.

[0060] For further details, please refer to... Figures 1-4 The inner wall of the reflector cup 200 is provided with a reflective surface 201, which is used to reflect the light from the light source. The reflective surface 201 is provided with an electroplated layer.

[0061] In this embodiment, the inner wall of the reflector cup 200 is provided with an electroplated layer, which makes the reflective surface 201 smooth and can effectively reflect light. The rest of the reflector cup 200 is shielded, that is, there is no electroplated surface on the rest of the parts. Therefore, this embodiment can effectively avoid the electrical connection between the current of the light source and the electroplated layer of the reflector cup 200 when the light source is conductive, thereby avoiding safety hazards such as the reflector cup 200 burning.

[0062] Accordingly, this application also provides a lighting fixture, which includes the light-emitting structure of any of the above embodiments.

[0063] In this embodiment, because the light-emitting structure is equipped with an anti-glare shield 100, the UGR value of the light-emitting structure is low. Meanwhile, as... Figure 2 As shown, the first light ray 10 and the second light ray 20 emitted by the light source are both separated from the anti-glare shield 100, that is, the first light ray 10 and the second light ray 20 are both within the range of the anti-glare shield 100. Therefore, it can effectively prevent users from seeing a halo around the opening 101 of the anti-glare shield 100 outside the illumination range of the light, thereby avoiding glare.

[0064] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

[0065] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, combinations, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A light-emitting structure, characterized in that, The light-emitting structure includes: light source; A reflector cup, wherein the light source is located at the bottom of the reflector cup; An anti-glare shield is attached to the end of the reflector that is furthest from the light source; The light emitted by the light source includes a first light and a second light. The first light is emitted directly from the reflector cup, and the second light is emitted from the anti-glare shield after being reflected by the inner wall of the reflector cup. Both the first light and the second light are separated from the anti-glare shield.

2. The light-emitting structure according to claim 1, characterized in that, The anti-glare shield has an opening at one end away from the light source, the opening being used to allow light to pass through the anti-glare shield, the light source having a first point, the opening having a second point, and the distance between the first point and the second point being the farthest distance from the light source to the opening; Along the direction from the first point to the second point, the horizontal distance from the first point to the rim of the reflector cup is the first horizontal distance, the horizontal distance from the rim of the reflector cup to the second point is the second horizontal distance, the vertical distance from the first point to the rim of the reflector cup is the first vertical distance, the vertical distance from the rim of the reflector cup to the second point is the second vertical distance, the ratio of the first vertical distance to the first horizontal distance is the first ratio, the ratio of the sum of the first vertical distance and the second vertical distance to the second horizontal distance is the second ratio, and the first ratio is greater than the second ratio.

3. The light-emitting structure according to claim 2, characterized in that, The ratio of the first ratio to the second ratio is (0 to 0.25).

4. The light-emitting structure according to claim 2, characterized in that, The light source is a Lambertian light emitter, and the opening is an annular opening; and / or, The inner wall of the reflector cup is a smooth curved surface.

5. The light-emitting structure according to claim 2, characterized in that, The outer wall of the reflector is provided with a first rib and a second rib. The first rib is arranged along the circumference of the reflector, and the second rib is connected to the two ends of the first rib in the circumferential direction and forms an angle with the first rib between the second rib and the side wall of the reflector.

6. The light-emitting structure according to claim 5, characterized in that, The included angle is 45° to 135°.

7. The light-emitting structure according to claim 1, characterized in that, The reflector cup includes multiple first ribs and multiple second ribs, and also includes a mounting part. The mounting part is located between two adjacent second ribs on adjacent first ribs and is connected to the second ribs. The mounting part is provided with mounting holes, and the depth direction of the mounting holes is the same as the depth direction of the reflector cup.

8. The light-emitting structure according to claim 7, characterized in that, The inner wall of the anti-glare shield is provided with a limiting part, and a limiting groove is formed between two adjacent second ribs on adjacent first ribs, and the limiting part is engaged in the limiting groove.

9. The light-emitting structure according to claim 1, characterized in that, The inner wall of the reflector cup is provided with a reflective surface, which is used to reflect the light from the light source, and the reflective surface is provided with an electroplated layer.

10. A lighting fixture, characterized in that, The lighting fixture includes the light-emitting structure described in any one of claims 1 to 9.

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