A light reflecting cup and a wall washer lamp

Abstract

The application discloses a reflective cup and a wall washing lamp, wherein the reflective cup comprises a reflective cup body, the reflective cup body is arranged in a cup axial plane symmetry, a cup cavity is arranged in the reflective cup body, the inner wall of the cup cavity is a reflective and incomplete parabolic surface, a first opening is arranged at the top of the cup cavity, a second opening is arranged at one side of the cup cavity, the first opening and the second opening are communicated, a third opening for placing a light source is arranged at the bottom of the cup cavity, and the light source is located at the focal point of the parabolic surface. The light of the reflective cup system has a polarized effect, the light is deviated to the wall surface, the light utilization rate is improved, the wall washing height is ensured, the second opening of the reflective cup illuminates the bottom of the wall surface, meanwhile, the inverted fork is eliminated, and a good anti-glare effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of lighting fixtures, specifically to a reflector and a wall washer. Background Technology

[0002] Existing reflectors are generally used in floodlights. Currently, wall washer lights on the market usually use symmetrical light distribution lenses or circular reflectors as optical devices. However, using circumferentially symmetrical reflectors directly in wall washer lights can lead to problems such as unevenness, cross-shaped reflections, and inability to illuminate the bottom, resulting in low light utilization. The reflector surface structure often directly affects the placement of the light source. Existing wall washer light fixtures have the drawbacks of complex structure and troublesome assembly when the light source and reflector are matched. Summary of the Invention

[0003] To solve the above problems, the technical solution provided by the present invention is as follows:

[0004] A reflector cup includes a reflector cup body symmetrically arranged along the cup axis. The reflector cup body has a cup cavity inside, the inner wall of the cup cavity is a reflective and incomplete parabolic surface, a first opening is opened at the top of the cup cavity, a second opening is opened on one side of the cup cavity, the first opening and the second opening are connected, and a third opening for placing a light source is opened at the bottom of the cup cavity, the light source being located at the focal point of the parabolic surface.

[0005] The present invention is further configured such that the optical axis of the lamp source is located on the cup axis surface, and the optical axis of the lamp source is perpendicular to the surface where the first opening is located. The line connecting the point on the first opening that is farthest from the surface where the second opening is located and the lamp source is the first direct ray. The angle between the first direct ray and the optical axis of the lamp source is not greater than 17°.

[0006] The present invention is further configured such that the line connecting the point on the second opening that is farthest from the surface of the first opening and the light source is the second direct ray, and the angle between the first direct ray and the optical axis of the light source is not greater than 90° and not less than 74°.

[0007] The present invention is further configured such that the angle between the plane containing the first opening and the plane containing the second opening is an obtuse angle.

[0008] The present invention is further configured such that the reflector body includes an outer wall, the bottom of the outer wall is provided with a skirt, and a positioning block is provided on the side of the skirt away from the first opening.

[0009] A wall washer light fixture includes the aforementioned reflector cup, and also includes a profile, an aluminum substrate, and glass. The aluminum substrate is connected inside the profile, the glass is connected to the surface of the profile, a light source is disposed on the aluminum substrate, the reflector cup body is connected to the aluminum substrate, and the light source is located inside the third opening.

[0010] The present invention is further configured such that the reflectors are evenly arranged on the aluminum substrate.

[0011] The present invention is further configured such that the glass is obliquely connected to the surface of the profile, and the glass is respectively disposed opposite to the first opening and the second opening.

[0012] The present invention is further configured such that end caps are sealed at both ends of the profile, and a rubber gasket is provided between the end caps and the profile.

[0013] The present invention is further provided with a bracket on the side of the profile away from the glass. The bracket includes a fixed part and a movable part, which are connected by a pin. The movable part is connected to the profile.

[0014] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0015] The reflector in this technical solution forms a second opening by cutting off a portion of the side facing the wall, which increases the angular range of the direct light emitted from the reflector. This allows the light source using the reflector to illuminate both the bottom and the top of the wall. Furthermore, based on the optical characteristics of a parabola, light emitted from the focal point of the parabola will be reflected and projected parallel to the distance. Therefore, the reflected light from the reflector is a collimated beam, thus illuminating the top of the wall.

[0016] The reflector system of this invention has a polarizing effect, which directs the light towards the wall, improving light utilization and ensuring the wall washing height. The second opening of the reflector illuminates the bottom of the wall, while eliminating the inverted cross and providing a good anti-glare effect. Attached Figure Description

[0017] Figure 1 This is a perspective view of the reflector cup in Embodiment 1 of the present invention.

[0018] Figure 2 This is a cross-sectional view of the reflector cup along the axial surface of the cup in Embodiment 1 of the present invention.

[0019] Figure 3 This is a cross-sectional view of the reflector cup with light source along the axial surface of the cup in Embodiment 1 of the present invention.

[0020] Figure 4 This is a simulation diagram of the reflector cup in TracePro software according to Embodiment 1 of the present invention.

[0021] Figure 5 This is a light distribution curve diagram of the reflector cup in Embodiment 1 of the present invention.

[0022] Figure 6 This is an exploded view of the wall washer light fixture in Embodiment 2 of the present invention.

[0023] Figure 7 This is a cross-sectional view of the wall washer light fixture of Embodiment 2 of the present invention. Detailed Implementation

[0024] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to a mechanical connection or an electrical connection, or a connection within two components; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0027] Example 1

[0028] Combined with appendix Figure 1 To be continued Figure 3 The present invention provides a reflector cup, comprising a reflector cup body 100, which is symmetrically arranged along the cup axis plane OXZ. The reflector cup body 100 has a cup cavity 110 inside, and the inner wall of the cup cavity 110 is a reflective and incomplete parabolic surface. The top of the cup cavity 110 has a first opening 120, and one side of the cup cavity 110 has a second opening 130. The first opening 120 and the second opening 130 are connected. The bottom of the cup cavity 110 has a third opening 140 for placing a light source 200, and the light source 200 is located at the focal point of the parabolic surface.

[0029] In the above embodiment, the cup axis surface is Figure 1 The plane containing OXZ is defined as O, which is the position of the light source 200 on the reflector body 100.

[0030] In this embodiment, as shown in the appendix Figure 3 As shown, the optical axis OP of the lamp source 200 is located on the cup axis surface OXZ, and the optical axis OP of the lamp source 200 is perpendicular to the plane where the first opening 120 is located, that is, the plane where the first opening 120 is located is parallel to the plane where the cup axis surface OXZ is located. Figure 1In the OXY plane, the line connecting the point A on the first opening 120 that is farthest from the plane where the second opening 130 is located and the light source 200 is the first direct ray OA, and the angle α between the first direct ray OA and the optical axis OP of the light source 200 is not greater than 17°.

[0031] In the above embodiment, the direction of the optical axis OP of the lamp source 200 is... Figure 1 The OZ direction in the middle.

[0032] In another embodiment, the optical axis OP of the lamp source 200 may not be perpendicular to the plane where the first opening 120 is located, that is, the plane where the first opening 120 is located is not parallel to... Figure 1 The OXY plane is in the middle, but the optical axis OP of the light source 200 is always perpendicular to it. Figure 1 The OXY plane in the middle.

[0033] In this embodiment, as shown in the appendix Figure 3 As shown, the line connecting the point on the second opening 130 that is farthest from the surface where the first opening 120 is located and the light source 200 is the second direct ray OB. The angle β between the first direct ray OB and the optical axis OP of the light source 200 is not greater than 90° and not less than 74°.

[0034] In the above embodiment, the height of the light emission point of the second opening 130 of the reflector body 100 is not lower than the height of the light source 200.

[0035] In this embodiment, the angle between the plane containing the first opening 120 and the plane containing the second opening 130 is an obtuse angle; this structure is designed so that the reflector body 100 can be more easily demolded from the mold after injection molding.

[0036] In this embodiment, the reflector body 100 includes an outer wall 150, a skirt 160 is provided at the bottom of the outer wall 150, and a positioning block 170 is provided on the side of the skirt 160 away from the first opening 120.

[0037] In the above embodiment, the skirt 160 allows the reflector body 100 to be smoothly connected to the mating surface; the positioning block 170 is used for positioning.

[0038] In this embodiment, opening the second opening 130 is equivalent to cutting off part of the parabola, while the remaining inner wall of the cup cavity 110 is at least half the area of ​​the complete parabola, so as to limit the light emission angle of the reflector cup body 100 and improve the wall washing effect.

[0039] As attached Figure 4The image shown is a simulation of the reflector in TracePro software. The wall height is set to 1000mm, the width to 1000mm, and the distance from the reflector to the wall is 100mm. The first opening 120 and the second opening 130 allow the light spots of direct and reflected light to overlap on the wall, while still maintaining the effect of uniformly decreasing illuminance from bottom to top. The luminous flux irradiated onto the wall by the reflector in this embodiment accounts for more than 59% of the total luminous flux of the light source, which is much higher than that of a symmetrical optical system.

[0040] For example, see appendix. Figure 5 The diagram shown is a light distribution curve of the reflector cup in this embodiment. The light from the entire reflector cup system has a polarizing effect, causing the light to bend towards the wall and improving the light utilization rate.

[0041] In this embodiment, when the reflector body 100 is in use, the second opening 130 faces the wall.

[0042] In this embodiment, the reflector cup forms a second opening by cutting off a portion of the side facing the wall. This increases the angular range of the direct light emitted from the reflector cup, allowing the light source using this reflector cup to illuminate not only the bottom of the wall but also the surrounding area. Furthermore, based on the optical properties of a parabola, light rays emitted from the focal point of the parabola are reflected and projected parallel to the surrounding surface. Therefore, the reflected light from the reflector cup is a collimated beam, illuminating the top of the wall. The reflector cup system of this invention provides a polarizing effect, directing the light towards the wall surface, improving light utilization, and ensuring the wall washing height. The second opening of the reflector cup illuminates the bottom of the wall while eliminating the "forked" effect and providing excellent anti-glare properties.

[0043] Example 2

[0044] Combined with appendix Figure 1 , 2 3, 6, and 7, the technical solution of the present invention is a wall washer light fixture, including the reflector cup 100 described in embodiment 1, and also including a profile 300, an aluminum substrate 400, and a glass 500. The aluminum substrate 400 is connected inside the profile 300, the glass 500 is connected to the surface of the profile 300, a light source 200 is provided on the aluminum substrate 400, the reflector cup body 100 is connected to the aluminum substrate 400, and the light source 200 is located inside the third opening 140.

[0045] In this embodiment, the reflector cups 100 are evenly arranged on the aluminum substrate 400.

[0046] In this embodiment, the glass 500 is obliquely connected to the surface of the profile 300, and the glass 500 is respectively disposed opposite to the first opening 120 and the second opening 130; so that the glass 500 can directly face the reflected light and direct light emitted by the reflector cup 100.

[0047] In this embodiment, end caps 600 are encapsulated at both ends of the profile 300, and a rubber gasket 700 is provided between the end caps 600 and the profile 300.

[0048] In this embodiment, a bracket 800 is provided on the side of the profile 300 away from the glass 600. The bracket 800 includes a fixing member 810 and a movable member 820. The fixing member 810 and the movable member 820 are connected by a pin 830. The movable member 820 is connected to the profile 300.

[0049] In the above embodiment, the wall washer light fixture is installed by the bracket 800. After installation, the angle of the wall washer light can be adjusted by the fixing member 810 and the movable member 820.

[0050] The wall washer light fixture of this invention is an application of a row of reflectors 100 on the light fixture. The spacing between the reflectors 100 is set according to the light emission angle of the reflectors 100. By using the reflectors 100 of Embodiment 1, the ratio of wall washer height to installation distance can be maintained while ensuring the wall washer height.

[0051] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A retroreflective cup characterized by, The application relates to a light cup body which is arranged in an axial plane and is internally provided with a cup cavity, the inner wall of the cup cavity is a light-reflecting and incomplete parabolic surface, a first opening is arranged at the top of the cup cavity, a second opening is arranged at one side of the cup cavity, the first opening and the second opening are in communication, a third opening for placing a light source is arranged at the bottom of the cup cavity, the light source is located at the focal point of the parabolic surface. The optical axis of the light source is located on the axial plane, and the optical axis of the light source is perpendicular to the plane where the first opening is located, the connecting line between the point farthest from the plane where the second opening is located on the first opening and the light source is a first straight light, the included angle between the first straight light and the optical axis of the light source is not greater than 17 degrees. The connecting line between the point farthest from the plane where the first opening is located on the second opening and the light source is a second straight light, the included angle between the second straight light and the optical axis of the light source is not greater than 90 degrees and not less than 74 degrees.

2. A reflector cup according to claim 1, wherein The included angle between the plane where the first opening is located and the plane where the second opening is located is an obtuse angle.

3. A reflector cup according to claim 1, wherein The light cup body comprises an outer wall, the bottom of the outer wall is provided with a skirt, and the side of the skirt far from the first opening is provided with a positioning block.

4. A wall washer fixture, characterized by, The application relates to a light cup, an aluminum base and glass, the aluminum base is connected inside the profile, the glass is connected to the surface of the profile, the light source is arranged on the aluminum base, the light cup body is connected to the aluminum base, and the light source is located in the third opening.

5. A wall washer luminaire according to claim 4, wherein, The light cups are uniformly arranged on the aluminum base.

6. A wall washer luminaire according to claim 4, wherein, The glass is obliquely connected to the surface of the profile, and the glass is oppositely arranged with the first opening and the second opening.

7. A wall washer luminaire according to claim 4, wherein, The both ends of the profile are packaged with end covers, and the end covers are provided with rubber pads.

8. A wall washer luminaire according to claim 4, wherein, The side of the profile far from the glass is provided with a support, the support comprises a fixed part and a movable part, the fixed part and the movable part are connected through a pin shaft, and the movable part is connected to the profile.

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