Reflection cup and lighting lamp

Abstract

The embodiment of the utility model belongs to the technical field of lighting lamps and relates to a reflection cup and a lamp, the reflection cup comprises a main body, the main body is provided with a light inlet and a light outlet, the light inlet is located at the bottom of the main body, the light outlet is located at the top of the main body, and the cross sectional area of the inner wall of the main body is gradually increased in the direction from the light inlet to the light outlet; the inner wall comprises a plurality of annular reflecting surfaces and a plurality of connecting surfaces, and the reflecting surfaces are arranged in the direction from the light inlet to the light outlet and used for reflecting light emitted from the light outlet to the light outlet; the plane where the light inlet is located is a horizontal plane, a first gap is formed between projections of the adjacent reflecting surfaces on the horizontal plane, and the connecting surface connects the adjacent reflecting surfaces. According to the lamp, by adjusting the size of the first gap, on the premise that the size of the air inlet of the lamp and the inclination angle of the reflection face are not changed, the area of the cross section of the light outlet and the area of the cross section of the inner wall are adjusted, and therefore the lamp can emit light in a larger range.

Description

Technical Field

[0001] The present application relates to the technical field of lighting fixtures, and more specifically, to a reflective cup and a lighting fixture. Background Art

[0002] The floodlighting method of lighting fixtures generally includes structures such as a light source, a reflector cup, and a lens. The light source is located at the bottom of the light cup, and the lens is placed on the top of the reflector cup. The reflector cup is used to converge the light emitted by the light source to the lens.

[0003] The reflective cup is usually a trumpet-shaped structure that is wide at the top and narrow at the bottom. Its side wall forms an angle with the horizontal plane. At the same time, the upper end of the reflective cup has an opening, which determines the light output area of ​​the reflective cup after the light is refracted out of the reflective cup. If the reflective cup of the prior art needs to increase the light output area, it is necessary to increase the angle between the inner wall of the reflective cup and the horizontal plane while ensuring that the size of the light inlet remains unchanged, thereby increasing the opening and the light output area. However, when the angle changes, the angle of the light reflected by the inner wall of the reflective cup will change, and the inner wall needs to be redesigned, resulting in high production costs for the reflective cup; at the same time, when the angle increases, the shape of the reflective cup tends to be irregular, and it is not easy to assemble with other structures.

[0004] In summary, the existing reflective cup cannot adjust the light output area without changing the angle formed between the inner wall and the horizontal plane, which leads to high production cost and poor adaptability of the reflective cup. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the present application is the high production cost and poor adaptability of the existing reflective cups.

[0006] In order to solve the above technical problems, the embodiment of the present application adopts the following solution:

[0007] A reflective cup for adjusting light, the reflective cup comprising:

[0008] A main body, wherein the main body is provided with a light inlet and a light outlet, wherein the light inlet is located at the bottom of the main body, and the light outlet is located at the top of the main body, and along the direction from the light inlet to the light outlet, the cross-sectional area of ​​the inner wall of the main body gradually increases;

[0009] The inner wall includes a plurality of annular reflecting surfaces and a plurality of connecting surfaces, wherein the plurality of reflecting surfaces are arranged along a direction from the light inlet to the light outlet, and are used to reflect light emitted from the light outlet to the light outlet;

[0010] The plane where the light inlet is located is a horizontal plane, there is a first gap between the projections of adjacent reflecting surfaces on the horizontal plane, and the connecting surface connects the adjacent reflecting surfaces.

[0011] Furthermore, the width of the first gap is 0.1 mm to 0.5 mm.

[0012] Furthermore, the reflective surface is provided with a plurality of first reflective protrusions along the circumference of the inner wall.

[0013] Further, the first reflective protrusion protrudes in a direction perpendicular to the reflective surface; and / or,

[0014] The protrusion height of the first reflective protrusion is less than 0.3 mm.

[0015] Correspondingly, the present application also provides a lamp, which includes the reflective cup as described in any one of the above embodiments.

[0016] Furthermore, the lamp also includes a lens;

[0017] The lens is located at the light outlet and is provided with a light incident surface, the light incident surface covers the light outlet and protrudes toward the inside of the reflective cup.

[0018] Furthermore, the connecting surface is provided with a plurality of second reflective protrusions, the protrusion direction of the second reflective protrusions is toward the light outlet, and is used to disperse the light reflected from the light incident surface to the connecting surface, and reflect it to the lens again.

[0019] Furthermore, the connecting surface is provided with a plurality of reflective arc grooves, the openings of the reflective arc grooves are toward the light outlet, and are used to disperse the light reflected from the light incident surface to the connecting surface, and reflect it to the lens again.

[0020] Furthermore, along the direction from the light inlet to the light outlet, there is a second gap between adjacent reflection surfaces.

[0021] Furthermore, a light emitting surface is provided on a side of the lens away from the reflective cup, and the light emitting surface is provided with a plurality of microstructures.

[0022] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0023] The lamp of the present application can adjust the size of the first gap, thereby adjusting the light outlet and the cross-sectional area of ​​the inner wall without changing the size of the air inlet of the lamp and the inclination angle of the reflecting surface, so that the lamp can have a larger range of emitted light. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the solutions in the present application or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 is an exploded schematic diagram of the lamp of the present application;

[0026] Figure 2 is a schematic diagram of the structure of the lamp of the present application;

[0027] Figure 3 yes Figure 2 A cross-sectional view of the lamp;

[0028] Figure 4 is a schematic structural diagram of a reflective cup provided with a second reflective protrusion according to the present application;

[0029] Figure 5 yes Figure 4 Cross-sectional view of the middle reflector cup;

[0030] Figure 6 yes Figure 5 A magnified schematic diagram of point A;

[0031] Figure 7 It is a structural schematic diagram of a reflective cup provided with a reflective arc groove of the present application;

[0032] Figure 8 yes Figure 7 Cross-sectional view of the middle reflector cup;

[0033] Fig. 9 yes Figure 8 An enlarged schematic diagram of point B.

[0034] Reference numerals:

[0035] Lamp 10, first gap 20, second gap 30, first light path 40, second light path 50, first sub-light path 51, second sub-light path 52, third sub-light path 53, third light path 60, reflective cup 100, reflecting surface 101, connecting surface 102, second reflecting protrusion 103, reflecting arc groove 104, inner wall 110, light inlet 120, lens 200, light incident surface 201, microstructure 210, light source 300, anti-glare cover 400, bracket 500. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0037] In this application, unless otherwise stated, directional words such as "upper" and "lower" generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device. In addition, in the description of this application, the term "including" means "including but not limited to". The terms first, second, third, etc. are used only as labels and do not impose numerical requirements or establish an order.

[0038] In this application, "and / or" describes the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

[0039] In the present application, "at least one" means one or more, and "plurality" 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 items or plural items. For example, "at least one of a, b, or c", or "at least one of a, b, and c" can all mean: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, c can be single or multiple, respectively.

[0040] Various embodiments of the present application may be presented in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity, and should not be understood as a rigid limitation on the scope of the present application; therefore, the range description should be considered to have specifically disclosed all possible sub-ranges and single numerical values ​​within the range. For example, the range description from 1 to 6 should be considered to have 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., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which apply regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any cited number (fractional or integer) within the indicated range. Figure 3 , Figure 5 and Figure 8The Z direction is the up and down direction, and the X direction is the left and right direction. The cross section should be the interface formed by cutting the surface perpendicular to the Z axis, and the vertical plane is the plane formed by the ZX axis.

[0041] Please refer to Figures 1 to 3 The embodiment of the present application provides a reflective cup 100 for adjusting light, and the reflective cup 100 includes: a main body, the main body is provided with a light inlet 120 and a light outlet (not marked in the figure), the light inlet 120 is located at the bottom of the main body, the light outlet is located at the top of the main body, and the cross-sectional area of ​​the inner wall 110 of the main body gradually increases along the direction from the light inlet 120 to the light outlet;

[0042] The inner wall 110 includes a plurality of annular reflecting surfaces 101 and a plurality of connecting surfaces 102. The plurality of reflecting surfaces 101 are arranged along the direction from the light inlet 120 to the light outlet, and are used to reflect the light emitted from the light outlet to the light outlet;

[0043] The plane where the light inlet 120 is located is a horizontal plane. There is a first gap 20 between the projections of adjacent reflecting surfaces 101 on the horizontal plane. The connecting surface 102 connects the adjacent reflecting surfaces 101 .

[0044] In this embodiment, since the cross-sectional area of ​​the inner wall 110 of the main body gradually increases from the light inlet 120 to the light outlet, the reflective cup 100 as a whole presents a trumpet-shaped structure that is wide at the top and narrow at the bottom, and an obtuse angle is formed between the inner wall and the bottom wall bracket.

[0045] In the present application, the projections of the adjacent reflective surfaces 101 on the plane where the light inlet 120 is located have a first gap 20, so the structure of the reflective cup 100 is similar to a step. Figure 3 , the projection of the reflecting surface 101 on the vertical plane is almost equal to the projection of the inner wall 110 on the vertical plane. Preferably, when the refractive surface is parallel to the horizontal plane, the projection of the reflecting surface 101 on the vertical plane is equal to the projection of the inner wall 110 on the vertical plane, that is, the connecting surface 102 does not have a projection on the vertical plane.

[0046] Therefore, when the light source 300 emits light from the light inlet 120, the light will mainly hit the reflective surface 101, and will be emitted toward the light outlet after being reflected by the reflective surface 101. At this time, the size of the connecting surface 102 can be adjusted by adjusting the size of the first gap 20, thereby changing the size of the cross-sectional area of ​​the light outlet and the inner wall 110 of the reflective cup 100. Before and after changing the size of the first gap 20, the angle of the reflective surface 101 and the size of the light inlet 120 remain unchanged, so there is no need to redesign the reflective surface 101. At the same time, only the radius of the reflective cup 100 changes, and the light inlet 120 does not change. Therefore, the assembly relationship between the light source 300 and the reflective cup 100 remains unchanged, and there is no need to change the shape of the light source 300.

[0047] In summary, the embodiments of the present application can adjust the cross-sectional area of ​​the light outlet and the inner wall 110 of the reflective cup 100 without changing the angle of the reflective surface 101, thereby increasing the light emitting area of ​​the reflective cup 100 and the adaptability of the reflective cup 100.

[0048] It should be understood that the connection surface 102 may be provided with a reflective coating so as to have the ability to reflect light. In this case, the connection surface 102 can also receive part of the light and scatter and reflect this part of the light to the light inlet 120. The connection surface 102 may also not be provided with a reflective coating. In this case, the connection surface 102 basically does not reflect light, so that all the light is reflected by the reflective surface 101 and then emitted to the light outlet, thereby facilitating the adjustment of the brightness and concentration of the light by adjusting the angle of the reflective surface 101.

[0049] For further information, please refer to Figure 3 , the width of the first gap 20 is 0.1 mm to 0.5 mm.

[0050] In this embodiment, when the connecting surface 102 is a horizontal surface, the width of the first gap 20 is equal to the width of the connecting surface 102, and the width direction is Figure 3 The width of the first gap 20 can be any one of 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, and 0.5 mm, or a range formed by any two of the values.

[0051] If the reflective surface 101 is a planar structure, the light source 300 is emitted to the reflective surface 101, and the multiple light rays reflected by the reflective surface 101 to the light outlet are basically parallel and concentrated at the center of the light outlet. At this time, the light emitted by the reflective cup 100 is less uniform, which can easily irritate the user's eyes.

[0052] To further solve the above problems, please refer to Figures 3 to 6 The reflective surface 101 is provided with a plurality of first reflective protrusions along the circumference of the inner wall 110 .

[0053] In this embodiment, the first reflective protrusions may be formed by the arch of the reflective surface 101, or may be connected to the reflective surface 101. A plurality of first reflective protrusions are distributed along the circumference of the inner wall 110 and around the central axis of the reflective cup 100. In this case, gaps are formed between adjacent first reflective protrusions. Figure 3 , the light emitted by the light source 300 forms a first light path 40 and a second light path 50, and the first light path 40 is directed directly toward the light outlet. The second light path 50 is irradiated by the first reflective protrusion, so the light distributed on the first reflective protrusion forms a divergent light path after being reflected, that is, the light emitted from the light outlet after being reflected by the first reflective protrusion covers a larger area rather than being concentrated in the center of the light outlet. At this time, the light is evenly distributed and the light mixing effect is improved.

[0054] In summary, the first reflective protrusion of this embodiment can improve the uniformity and light mixing effect of the light emitted by the reflective cup 100, and prevent the user's eyes from being irritated. It should be understood that, for the sake of convenience, after the light is reflected by the reflective protrusion, the range, uniformity and light mixing effect of the light emitted from the reflective cup 100 are improved. Figure 3 The second optical path 50 includes a first sub-optical path 51 , a second sub-optical path 52 , and a third sub-optical path 53 .

[0055] For further information, please refer to Figures 3 to 6 , the first reflective protrusion protrudes in a direction perpendicular to the reflective surface 101 .

[0056] In this embodiment, the first reflective protrusion protrudes in a direction perpendicular to the reflective surface 101, which should be understood as follows: the vertical line from the first reflective protrusion to the reflective surface 101 is located on the symmetry line of the reflective surface 101, that is, the vertical line divides the reflective surface 101 into two parts evenly. At this time, the light path of the light reflected by the first reflective protrusion is toward the light inlet 120, which can prevent the first reflective protrusion from protruding toward the light source 300, causing the light to be reflected to the light source 300 and affecting the brightness of the light emitted by the reflective cup 100.

[0057] Furthermore, the protrusion height of the first reflective protrusion is less than 0.3 mm.

[0058] In this embodiment, the protrusion height of the first reflective protrusion should be understood as that the length of the vertical line from the highest point of the first reflective protrusion to the reflective surface 101 is less than 0.3 mm, and when the first reflective protrusion protrudes in a direction perpendicular to the reflective surface 101, the vertical line is located on the symmetry line of the reflective surface 101. It should be understood that the protrusion height can be any value of 0.01 mm, 0.05 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, and 0.3 mm.

[0059] Accordingly, please refer to Figures 1 to 3 The present application also provides a lamp 10, which includes a reflective cup 100 as described in any one of the above embodiments.

[0060] In this embodiment, since the lamp 10 includes the reflective cup 100 of any one of the above embodiments, the lamp 10 can adjust the size of the first gap 20, thereby adjusting the cross-sectional area of ​​the light outlet and the inner wall 110 without changing the size of the air inlet of the lamp 10 and the inclination angle of the reflecting surface 101, thereby allowing the lamp 10 to have a larger range of emitted light.

[0061] For further information, please refer to Figures 1 to 3The lamp 10 further includes a lens 200 , which is located at the light outlet and has a light incident surface 201 . The light incident surface 201 covers the light outlet and protrudes toward the inside of the reflective cup 100 .

[0062] In this embodiment, of the light emitted directly from the light source 300 to the lens 200, according to the Fresnel reflection principle, about 90% to 95% of the light will be refracted in the lens 200 along the first light path 40 and then emitted, but there is still 10% to 5% of the light that will be reflected by the lens 200 along the third light path 60 to the inner wall 110 of the reflective cup 100. At this time, this part of the light will be further reflected by the reflective surface 101 and the connecting surface 102, thereby expanding the light mixing effect and uniformity. It should be understood that Figure 6 , Fig. 9 In order to facilitate understanding of the beneficial effect of light dispersion, three third light paths 60 are provided, and only one is marked in the figure.

[0063] For further information, please refer to Figures 4 to 6 The connecting surface 102 is provided with a plurality of second reflective protrusions 103 , the protrusion direction of the second reflective protrusions 103 is toward the light outlet, and is used to disperse the light reflected from the light incident surface 201 to the connecting surface 102 , and reflect it to the lens 200 again.

[0064] In this embodiment, the protruding direction of the second reflective protrusion 103 is toward the light outlet, so it can disperse the light reflected by the lens 200 to the second reflective protrusion 103 along the third optical path 60 and reflect it to the light outlet again. After being reflected by the second reflective protrusion 103, the light will be expanded to the entire opening range of the light outlet, thereby improving the lighting uniformity and light mixing effect of the lamp 10.

[0065] For further information, please refer to Figures 7 to 9 The connecting surface 102 is provided with a plurality of reflective arc grooves 104 , the openings of the reflective arc grooves 104 face the light outlet, and are used to disperse the light reflected from the light incident surface 201 to the connecting surface 102 , and reflect the light to the lens 200 again.

[0066] In this embodiment, the principle is the same as that of the second reflective protrusion 103. When the light enters the reflective arc groove 104, since the reflective arc groove 104 has a curved surface, the light will be scattered and the coverage range will be larger than the range directly emitted through the first optical path 40, thereby improving the lighting uniformity and mixing light effect of the lamp 10.

[0067] Further, please refer to FIG. 6 , in the direction from the light inlet 120 to the light outlet, there is a second gap 30 between adjacent reflective surfaces 101 .

[0068] In this embodiment, there is a second gap 30 between adjacent reflective surfaces 101 along the bottom-up direction. At this time, because the connecting surface 102 connects the adjacent reflective surfaces 101, the connecting surface 102 is not parallel to the horizontal plane, but forms a certain angle with the horizontal plane, that is, the inclination direction of the connecting surface 102 is similar to the inclination direction of the reflective surface 101. At this time, because the light reflected by the lens 200 to the reflective cup 100 usually has a certain angle with the central axis of the reflective cup 100, when the connecting surface 102 is inclined, it can receive more light, and then more effectively transmit the light of the third optical path 60, thereby further improving the illumination uniformity and light mixing effect of the lamp 10.

[0069] It should be understood that the second reflective protrusion 103 and the reflective arc groove 104 can be formed by protrusions or depressions of the connecting surface 102 , or can be formed separately and then connected to the connecting surface 102 .

[0070] For further information, please refer to Figure 1 and Figure 2 A light emitting surface is disposed on a side of the lens 200 away from the reflective cup 100 , and a plurality of microstructures 210 are disposed on the light emitting surface.

[0071] In this embodiment, the microstructure 210 can further disperse the light emitted from the lens 200 , thereby further improving the illumination uniformity and light mixing effect of the lamp 10 .

[0072] It should be understood that the lamp 10 may further include an anti-glare cover 400 and a bracket 500 , wherein the bracket 500 is used to support the anti-glare cover 400 and to accommodate the light source 300 , the reflective cup 100 , and the lens 200 .

[0073] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

[0074] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, combinations, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present application, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A reflective cup for adjusting light, characterized in that: The reflective cup comprises: A main body, wherein the main body is provided with a light inlet and a light outlet, wherein the light inlet is located at the bottom of the main body, and the light outlet is located at the top of the main body, and along the direction from the light inlet to the light outlet, the cross-sectional area of ​​the inner wall of the main body gradually increases; The inner wall includes a plurality of annular reflecting surfaces and a plurality of connecting surfaces, wherein the plurality of reflecting surfaces are arranged along a direction from the light inlet to the light outlet, and are used to reflect light emitted from the light outlet to the light outlet; The plane where the light inlet is located is a horizontal plane, there is a first gap between the projections of adjacent reflecting surfaces on the horizontal plane, and the connecting surface connects the adjacent reflecting surfaces.

2. The reflective cup according to claim 1, characterized in that: The width of the first gap is 0.1 mm to 0.5 mm.

3. The reflective cup according to claim 1, characterized in that: The reflective surface is provided with a plurality of first reflective protrusions along the circumference of the inner wall.

4. The reflective cup according to claim 3, characterized in that: The first reflective protrusion protrudes in a direction perpendicular to the reflective surface; and / or, The protrusion height of the first reflective protrusion is less than 0.3 mm.

5. A lamp, characterized in that: The lamp comprises a reflective cup as claimed in any one of claims 1 to 4.

6. The lamp according to claim 5, characterized in that: The lamp includes a lens; The lens is located at the light outlet and is provided with a light incident surface, the light incident surface covers the light outlet and protrudes toward the inside of the reflective cup.

7. The lamp according to claim 6, characterized in that: The connecting surface is provided with a plurality of second reflective protrusions, the protrusion direction of the second reflective protrusions is toward the light outlet, and is used to disperse the light reflected from the light incident surface to the connecting surface, and reflect it to the lens again.

8. The lamp according to claim 6, characterized in that: The connecting surface is provided with a plurality of reflective arc grooves, the openings of the reflective arc grooves face the light outlet, and are used to disperse the light reflected from the light incident surface to the connecting surface, and reflect the light to the lens again.

9. The lamp according to claim 7 or 8, characterized in that: Along the direction from the light inlet to the light outlet, a second gap is provided between adjacent reflection surfaces.

10. The lamp according to claim 6, characterized in that: A light emitting surface is arranged on a side of the lens away from the reflective cup, and a plurality of microstructures are arranged on the light emitting surface.

Images