Wall washer lamp lens and wall washer lamp

Abstract

The present invention relates to a wall washer lamp lens, which is used for light shaping of a COB light source, and includes a reflective cup facing the COB light source and a light guide tightly connected to the front end of the reflective cup, wherein the light guide includes at least two tongue-shaped light guides arranged in parallel, and the tongue-shaped light guide extends forward from the bottom front end of the reflective cup, and includes an arc-shaped reflective surface and a smooth light-emitting surface. A wall washer lamp using the above-mentioned lens is also provided, which also includes a COB light source and a lamp body arranged facing the rear end of the wall washer lamp lens, and the lamp body is used to fix the wall washer lamp lens and the COB light source. The present invention has the following technical effects: the wall washer lamp lens can convert the light emitted downward into light polarized to the side, and has a simple, compact, and thin structure. It can be used for embedded wall washer lamps to achieve the advantages of small opening size and small height of the entire lamp; at the same time, the wall washer lamp adopts a method of separating the light source, the radiator and the lens, so it can be adjusted without blocking points and at infinite angles.

Description

Technical Field

[0001] The invention relates to the field of LED lighting, and in particular to a wall washer lamp lens and a wall washer lamp. Background Art

[0002] Existing wall washers are usually realized by oblique spotlights or deflected downlights. Most embedded wall washers adopt a single point light source. This type of lamp has a complex structure. Moreover, since the light source is in an oblique state and is not directly opposite to the reflector cup, it will cause a certain amount of light loss. In addition, it is difficult to reach the junction of the wall and the ceiling when washing the wall.

[0003] In addition, most of the horizontal adjustment methods of lamps on the market are to rotate the light module composed of the heat sink, light source, and lens as a whole. Because the light module composed of several parts is connected to the power cord, the power cord will be twisted and damaged during the rotation adjustment. Most manufacturers set a fixed stop point to limit the rotation range to prevent the wire from being twisted. This actually cannot achieve 360-degree full-scale adjustment.

[0004] In order to solve the problem of dark areas on the upper part of the illuminated wall, although the lamp body of the embedded wall washer lamp is embedded in the ceiling at this stage, most lamps will also expose a part of the optical device outside the face ring. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a wall washer lamp lens.

[0006] A wall washer lens is used for light shaping of a COB light source, comprising a reflective cup directly opposite to the COB light source and a light guide portion tightly connected to the front end of the reflective cup, wherein the light guide portion comprises at least two tongue-shaped light guides arranged in parallel, and the tongue-shaped light guide portion extends forward from the front end of the reflective cup and comprises an arc-shaped reflective surface and a smooth light-emitting surface.

[0007] Furthermore, the curvature of the arc-shaped reflective surface gradually increases along the light emitting direction.

[0008] Furthermore, the light guide portion further includes a second light emitting surface, which extends from the outermost smooth light emitting surface toward the wall of the reflective cup and is located on one side of the wall of the reflective cup and is concave toward the light emitting surface of the reflective cup.

[0009] Furthermore, the tongue-shaped light guide is distributed from the center of the light emitting surface of the reflective cup toward the side.

[0010] Furthermore, each of the tongue-shaped light guides protrudes to varying degrees relative to the outer edge of the reflective cup, and the protruding height gradually increases from the wall of the reflective cup toward the center of the reflective cup.

[0011] Furthermore, both side edges of the tongue-shaped light guide extend to the inner side wall of the reflective cup.

[0012] Furthermore, the reflective cup and the light guide portion are of an integrated design and are both made of a material selected from the group consisting of glass, PMMA, PC, and transparent silicone.

[0013] In addition, as well as the above-mentioned wall washer lamp lens, the present invention further provides a wall washer lamp, comprising a COB light source and a lamp body arranged opposite to the rear end of the wall washer lamp lens, wherein the lamp body is used to fix the wall washer lamp lens and the COB light source.

[0014] Furthermore, it also includes a lens fixing seat, the edge of which is provided with a fixing piece fixedly connected to the lamp body, and the interior of which is provided with a fixing platform for fixing the wall washer lamp lens.

[0015] Furthermore, the lens fixing seat also includes a shading plate, which is arranged at the front end of the wall washer lamp lens and extends from the top of the tongue-shaped light guide member closest to the center of the wall washer lamp lens toward its arc-shaped reflective surface to the edge of the lens fixing seat.

[0016] Furthermore, the fixing member is a hook arranged on the outer side wall of the lens fixing seat, and the inner side wall of the lamp body is also provided with a concave groove coaxial with the lamp body, and the lens fixing seat is fixed when the hook is inserted into the concave groove.

[0017] Furthermore, the fixing platform is moved closer to the light source so that the top of the wall washer lamp lens mounted on the fixing platform is flush with the front end of the lamp body.

[0018] The present invention has the following technical effects:

[0019] 1. The wall washer lens of the present invention can convert the light emitted downward into light polarized to the side. It has a simple, compact, and thin structure. It can be used in embedded wall washer lamps to achieve the advantages of small opening size and small height of the whole lamp, filling the market gap of LED COB light source embedded wall washer lamps.

[0020] 2. The wall washer lens of the present invention can be used with the popular COB light source on the market at this stage. By comparison, it can reduce costs, improve light color consistency, and solve the problem of inconsistent light color when multiple LEDs from a point light source are combined.

[0021] 3. The wall washer lamp of the present invention adopts a method of separating the light source, the radiator and the lens. The adjustment purpose can be achieved by simply rotating the lens fixing seat. There is no twisting of the power cord, so it can be adjusted without any blocking points and at unlimited angles.

[0022] 4. The wall washer lamp of the present invention can solve the defect of the exposed optical lens, and completely hide the lens inside the lens fixing seat, so that the lamp panel embedded in the ceiling is flush with the ceiling, solving the appearance defect that the optical components of most embedded wall washer lamps on the market are obviously protruding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the wall washer lamp lens in embodiments 1 and 2 of the present invention.

[0024] Figure 2 It is a structural front view of the wall washer lamp lens in embodiments 1 and 2 of the present invention.

[0025] Figure 3 It is a cross-sectional view of the wall washer lens in embodiments 1 and 2 of the present invention.

[0026] Figure 4 Schematic diagram of the optical path of the wall washer lens in embodiments 1 and 2 of the present invention.

[0027] Figure 5 This is an exploded view of the wall washer structure in Example 3 of the present invention.

[0028] Figure 6 This is a cross-sectional view of the wall washer structure in Example 3 of the present invention.

[0029] The wall washer lamp lens is 1; the reflector cup is 11; the tongue-shaped light guide is 12; the arc-shaped reflective surface is 121; the smooth light-emitting surface is 122; the second light-emitting surface is 13; the COB light source is 2; the lamp body is 3; the light source mounting platform is 31; the lens fixing seat is 32; the fixing platform is 321; the concave card slot is 322; the hook is 323; and the shading plate is 33. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby more clearly defining the protection scope of the present invention.

[0031] Embodiment 1:

[0032] A wall washer lens 1 is used for light shaping of a COB light source 2, such as Figures 1 to 3 shown.

[0033] It specifically includes a reflective cup 11 and a light guide. In this embodiment, the two parts are designed as an integrated unit. The reflective cup 11 is directly opposite to the COB light source 2, and its overall shape is bowl-shaped. For the convenience of description, the present invention defines the light-entering end of the reflective cup 11 as the rear end, and the light-emitting end as the front end. Its light-entering surface is circular in design, and the inner side wall is designed as a full-reflection surface by a free-form surface, which plays a role in collecting light and reducing light loss.

[0034] As for the light guide part, the light guide part includes at least two parallel tongue-shaped light guides 12, which extend forward from the bottom front end of the reflective cup 11 and include an arc-shaped reflective surface 121 and a smooth light-emitting surface 122. The light of the COB light source 2 is input from the root of the tongue-shaped light guide 12, and is reflected by the arc-shaped reflective surface 121 and output from the smooth light-emitting surface 122. Since the smooth light-emitting surface 122 faces the side, the light can be well output to the wall, achieving a good wall-washing effect.

[0035] Moreover, the curvature of the arc-shaped reflective surface 121 gradually increases along the light emitting direction. The angle between the outgoing light and the incident light is getting smaller and smaller, so that the light is output closer to the junction of the wall and the ceiling. In order to ensure uniform light intensity on the same horizontal line when washing the wall, both sides of the tongue-shaped light guide 12 extend to the inner side wall of the reflective cup 11, so that the tongue-shaped light guide 12 is long and strip-shaped when viewed from the front.

[0036] In addition, in order to take care of the illumination at the bottom of the wall, the light guide also includes a second light emitting surface 13, which is used to guide part of the light to the lower section of the wall. Specifically, the second light emitting surface 13 extends from the outermost smooth light emitting surface 122 to the wall of the reflective cup 11, and is concave toward the light emitting surface of the reflective cup 11 on one side of the wall of the reflective cup 11. Figure 3 From the top, the cross-sectional curve of the second light emitting surface 13 gradually moves upward from the end connected to the tongue-shaped light guide 12 to the rear end, so that the deflection angle of the output light gradually increases.

[0037] Preferably, in this embodiment, there are two tongue-shaped light guides 12. For the convenience of description, the tongue-shaped light guide 12 near the center of the wall washer lens 1 is defined, and the other is a second tongue-shaped light guide. The second tongue-shaped light guide adjusts the output light originally irradiated to the reflective cup 11 on its side, and most of the output light is irradiated to the first tongue-shaped light guide of the first tongue-shaped light guide, and is refracted by the first tongue-shaped light guide to irradiate the upper half of the wall, and a small part of it is still directly irradiated to the wall.

[0038] Overall, if Figure 4 As shown, the tongue-shaped light guide 12 is distributed from the center of the light-emitting surface of the reflective cup 11 toward the side. The tongue-shaped light guide 12 and the second light-emitting surface 13 respectively control half of the output light. The tongue-shaped light guide 12 controls the half of the output light away from the wall, so that it is as close to the junction of the wall and the ceiling as possible, while the second light-emitting surface 13 makes certain corrections to output the light to the middle and lower sections of the wall, and finally outputs the light to the wall as much as possible.

[0039] The reflective cup 11 and the light guide part can be made of, but not limited to, one of glass, PMMA, PC or transparent silicone, so that they have higher light guiding performance.

[0040] Embodiment 2:

[0041] As an optimization of Example 1, the difference between this embodiment and Example 1 is that, in order to adjust the output light to the upper part of the wall as much as possible, each tongue-shaped light guide 12 protrudes to varying degrees relative to the outer edge of the reflective cup 11, and the protruding height gradually increases from the wall of the reflective cup 11 to the center of the reflective cup 11.

[0042] Therefore, it is possible to prevent the output light with a large deflection from being reflected twice by the front end of the reflective cup 11, thereby providing a larger adjustable space for adjusting the angle of the output light.

[0043] Embodiment 3:

[0044] As an application of embodiment 1 or 2, this embodiment provides a wall washer lamp, which applies the wall washer lamp lens 1 used in embodiment 1 or 2.

[0045] like Figure 5 and Figure 6 As shown, it specifically includes a COB light source 2 and a lamp body 3 which are arranged opposite to the rear end of the wall washer lens 1. A heat sink is arranged at the rear end of the lamp body 3 to efficiently conduct the heat generated by the COB light source 2 to the outside. A concave lamp cavity is arranged at the front end of the lamp body 3, on which a light source mounting platform 31 is arranged, and the COB light source 2 is fixed on the light source mounting platform 31. A lens fixing seat 32 for fixing the wall washer lens 1 is arranged at the opening of the lamp cavity.

[0046] In this embodiment, a fixing piece 321 fixedly connected to the lamp body 3 is disposed at the edge of the lens fixing seat 32, and a fixing platform 321 for fixing the wall washer lamp lens 1 is disposed inside.

[0047] The fixing member 321 is a hook 323 arranged on the outer wall of the lens fixing seat 32, and the inner wall of the lamp body 3 is also provided with a concave groove 322 coaxial with the lamp body 3, and the lens fixing seat 32 is fixed when the hook 323 is inserted into the concave groove 322. Since the hook 323 can rotate freely in the concave groove 322 along the axis of the lamp, the wall washer lamp lens 1 can be driven to rotate freely, realizing no blocking point and infinite angle adjustment.

[0048] Preferably, the fixing platform 321 extends inward from the lens fixing seat 32 and moves closer to the light source to form an annular step, the size of which matches the wall washer lamp lens 1. After installation, the light incident surface of the wall washer lamp lens 1 faces and is close to the COB light source 2, and the top of the wall washer lamp lens 1 is flush with the front end of the lamp body 3.

[0049] Preferably, since most of the light from the tongue-shaped light guide 12 of the wall washer lamp lens 1 is output by the smooth light-emitting surface 122, and its curved reflective surface 121 outputs very little light, and this part of the light is useless light, in order to improve the overall light-emitting effect, the lens fixing seat 32 also includes a shading plate 33, which is arranged at the front end of the wall washer lamp lens 1 and extends from the top of the tongue-shaped light guide 12 closest to the center of the wall washer lamp lens 1 toward its curved reflective surface 121 to the edge of the lens fixing seat 32.

[0050] In this embodiment, the shading plate 33 covers the side of the wall washer lamp lens 1 where the tongue-shaped light guide 12 is located, making the appearance of the product lamp more beautiful.

[0051] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A wall washer lens, used for light shaping of COB light source, characterized by: It includes a reflective cup facing the COB light source and a light guide part tightly connected to the front end of the reflective cup, the light guide part includes at least two parallel tongue-shaped light guides, the tongue-shaped light guide part extends forward from the bottom front end of the reflective cup, and includes an arc-shaped reflective surface and a smooth light-emitting surface; the light guide part also includes a second light-emitting surface, the second light-emitting surface extends from the smooth light-emitting surface at the outermost part to the cup wall of the reflective cup, and is concave on the side of the cup wall of the reflective cup toward the light-emitting surface of the reflective cup; the tongue-shaped light guide part includes a first tongue-shaped light guide part close to the center of the wall washer lamp lens and a second tongue-shaped light guide part away from the center of the wall washer lamp lens, the first tongue-shaped light guide part refracts the light output by the second tongue-shaped light guide part to the first tongue-shaped light guide part to the upper section of the wall, and the second light-emitting surface guides the light output through the second light-emitting surface to the lower section of the wall.

2. The wall washer lens according to claim 1, characterized in that: The curvature of the arc-shaped reflective surface gradually increases along the light emitting direction.

3. The wall washer lens according to claim 1, characterized in that: The tongue-shaped light guide is distributed from the center of the light emitting surface of the reflective cup toward the side.

4. The wall washer lens according to claim 1, characterized in that: Each of the tongue-shaped light guides protrudes to different degrees relative to the outer edge of the reflective cup, and the protruding height gradually increases from the wall of the reflective cup to the center of the reflective cup.

5. The wall washer lens according to claim 1, characterized in that: Both side edges of the tongue-shaped light guide extend to the inner side wall of the reflective cup.

6. The wall washer lens according to claim 1, characterized in that: The reflective cup and the light guide part are of an integrated design and are both made of a material selected from the group consisting of glass, PMMA, PC, and transparent silicone.

7. A wall washer lamp, characterized in that: It comprises the wall washer lamp lens as described in any one of claims 1 to 6, and also comprises a COB light source and a lamp body arranged opposite to the rear end of the wall washer lamp lens, wherein the lamp body is used to fix the wall washer lamp lens and the COB light source.

8. The wall washer lamp according to claim 7, characterized in that: It also includes a lens fixing seat, the edge of which is provided with a fixing piece fixedly connected to the lamp body, and the interior of which is provided with a fixing platform for fixing the wall washer lamp lens.

9. The wall washer lamp according to claim 8, characterized in that: The lens fixing seat also includes a shading plate, which is arranged at the front end of the wall washer lamp lens and extends from the top of the tongue-shaped light guide member closest to the center of the wall washer lamp lens toward its arc-shaped reflective surface to the edge of the lens fixing seat.

10. The wall washer lamp according to claim 8, characterized in that: The fixing member is a hook arranged on the outer side wall of the lens fixing seat, and the inner side wall of the lamp body is also provided with a concave groove coaxial with the lamp body. When the hook is inserted into the concave groove, the lens fixing seat is fixed.

11. The wall washer lamp according to claim 8, characterized in that: The fixing platform is moved closer to the light source so that the top of the wall washer lamp lens installed on the fixing platform is flush with the front end of the lamp body.

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