Light distribution structure and lighting device

Abstract

The utility model provides a light distribution structure and a lighting device. The light distribution structure comprises a light source and a light distribution assembly and is characterized in that the light distribution assembly comprises a reflector, the reflector comprises a light inlet and a light outlet, the light source is arranged at the light inlet of the reflector, the light distribution assembly further comprises a column body, the column body is arranged above the light source, and the light source is arranged above the column body. The cylinder extends from the light outlet of the reflector to the inner side of the reflector, at least one section of solid cylinder exists in the cylinder, the end face of the cylinder and the light source are arranged in a spaced mode, and the central axis of the cylinder coincides with the optical axis of the light source. According to the light distribution structure, stray light which is not controlled in the center of the reflector is absorbed through the column arranged in the middle of the reflector, and the anti-dazzle effect is achieved.

Description

Technical Field

[0001] The utility model relates to a light distribution structure and a lamp comprising the light distribution structure. Background Art

[0002] Wall washer, as the name implies, lets the light wash over the wall like water. It is a kind of lamp used for architectural decorative lighting. Wall washer projects its light onto the wall of the building to outline the building. Therefore, the light distribution of wall washer is usually polarized. Conventional polarized linear lamps have a larger light spot, stray light easily overflows, and glare is greater. Utility Model Content

[0003] The purpose of the present application is to provide a light distribution structure and a lighting device with an anti-glare function.

[0004] In order to achieve the above-mentioned effect, the technical solution adopted in the present application is to provide a light distribution structure, including a light source and a light distribution component, characterized in that the light distribution component includes a reflector, the reflector includes a light inlet and a light outlet, the light source is arranged at the light inlet of the reflector, and the light distribution component also includes a column, the column is arranged above the light source, the column extends from the light outlet of the reflector to the inner side of the reflector, there is at least one solid column in the column, the end face of the column is spaced apart from the light source, and the central axis of the column coincides with the optical axis of the light source.

[0005] Furthermore, the column is made of black light-absorbing material, or a black light-absorbing material coating is provided on the outer surface of the column.

[0006] Furthermore, the reflector is a convoluted structure, the column and the reflector are coaxially arranged, and a groove is formed at one end of the column facing the light source.

[0007] Furthermore, the column is arranged at the light outlet of the reflector through a mounting bracket, the mounting bracket includes an annular portion covering the light outlet, and a connecting arm connecting the column and the annular portion, and the mounting bracket is snap-connected to the reflector.

[0008] Furthermore, the distance between the column and the light source is greater than or equal to 5 mm.

[0009] Furthermore, the light distribution component further comprises a grid plate arranged outside the light outlet of the reflector, and the grid plate forms an inclined angle with a plane perpendicular to the optical axis of the light source.

[0010] Furthermore, an optical film is arranged between the grid plate and the reflector.

[0011] The present application further provides a lighting device, characterized in that: the lighting device includes a lamp body and the light distribution structure as described above disposed within the lamp body.

[0012] Further, the lamp body is strip-shaped, and a plurality of the light distribution structures are accommodated therein, and the light distribution structures are arranged along the length direction of the lamp body.

[0013] Further, the light distribution structure further includes a grille plate disposed outside the light exit of the reflector, the lamp body includes a light source mounting surface, the light source mounting surface is inclined in the lamp body, and the grille plate is inclined relative to the light source mounting surface, and the two have the same inclination direction.

[0014] The light distribution structure provided by the present utility model absorbs the uncontrolled stray light at the center of the reflector through the column disposed at the middle position of the reflector, achieving an anti-glare effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an exploded view of the structure of a lighting device according to a preferred embodiment of the present utility model;

[0016] Figure 2 is Figure 1 a sectional view of the lighting device in the embodiment;

[0017] Figure 3 is Figure 1 a schematic structural view of the column and the mounting bracket in the lighting device in the embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The light distribution structure and the lighting device proposed by the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] The structure of a lighting device according to a preferred embodiment of the present application is as Figure 1 、 Figure 2 shown. The lighting device in this embodiment is a wall washer light, including a long strip-shaped lamp body 5. The lamp body 5 and the light-transmitting panel 4 enclose a receiving space. The light source board 3, the light source 2, and the light distribution assembly 1 are disposed within the lamp body 5. Both ends of the lamp body 5 are closed by end caps 6. This lighting device is an outdoor lamp, and the lamp body 5 is electrically connected to the outside through a waterproof connector 8. The lamp body 5 is fixedly installed on an installation base such as the installation ground or the wall through a rotating bracket 7. The rotating bracket 7 can adjust the angle of the lamp body 5, thereby adjusting the light output direction.

[0020] The light distribution structure provided in the embodiment includes a light source 2 and a light distribution component 1. The light distribution component 1 includes a reflector 400, a column 300, an optical film 200, and a grating 100. Among them, the reflector 400 is the main light control element, and the reflector 400 includes a light inlet and a light outlet, and the light inlet is arranged in the light outlet direction of the light source 2. That is, the light source 2 is located below the light inlet of the reflector 400, and the light emitted by the light source 2 first enters the reflector 400 from the light inlet, and after being reflected by the side wall of the reflector 400, a light beam with a certain exit angle is formed and emitted from the light outlet. In this embodiment, a collimated light beam is formed after light control by the reflector 400, and light beams of other angles can also be formed in other preferred embodiments, which is not limited in this application. In order to achieve a better light mixing effect, the inner surface of the reflector 400 has a scale structure.

[0021] The light emitted by the light source 2, the large-angle part of which will be reflected by the side wall of the reflector 400, and the light of the central part will be directly emitted, which will make the light intensity of the central part too large. At the same time, there will always be some uncontrolled stray light in the reflection process, and these lights will also be concentrated to the center, which will cause glare. In order to solve the glare problem, the present embodiment is provided with a column 300 above the light source 2, and the reflector 400 is a reflector cup of a convolute structure, so the column 300 is also a convolute structure of a cylinder. The column 300 and the reflector 400 are coaxially arranged, and the central axis of the column 300 coincides with the optical axis of the light source 2. The column 300 is a structure extending from the light outlet of the reflector 400 to the inner side of the reflector 400, and at least one section of the column 300 is a solid column, so that the central part of the light emitted by the light source 2 will be blocked by the column 300, thereby avoiding the direct emission of this part of the light, and effectively preventing glare. At the same time, the column 300 extends toward the inside of the reflector, and its side surface can also absorb the uncontrolled stray light in the center of the reflector 400. In order to improve the absorption rate of stray light, the column 300 is black. Specifically, the column 300 itself can be made of black light-absorbing material, such as a black injection molded part. A coating of black light-absorbing material can also be provided on the outer surface of the column 300. The end face of the column 300 and the light source 2 are spaced apart. In the present embodiment, the distance between the end face of the column 300 and the light source 2 is 5 mm. The longer the height of the column 300 and the closer its end face is to the light source 2, the better the anti-glare effect achieved. However, as it gets closer to the light source 2, more light will be blocked, resulting in reduced light efficiency. Moreover, when the power is relatively large, the closer the column 300 is to the light source 2, the higher the temperature. Excessive temperature can cause the column 300 to soften at high temperatures. Therefore, the appropriate spacing between the end face of the column 300 and the light source 2 is more than 5 mm. From Figure 2 As can be seen from the cross-sectional view, a groove 301 is formed at one end of the column 300 facing the light source 2, which prevents the central part of the light from being directly reflected at the end surface of the column 300 and then entering the reflector 400 again, thereby further improving the anti-glare effect.

[0022] The cylinder 300 needs to be positioned above the light source 2 and kept at a distance from the light source 2, so a special mounting structure is required. In this embodiment, in order to cooperate with the installation, a mounting bracket 500 as shown in Figure 3 is provided. The mounting bracket 500 includes an annular portion 501. The annular portion 501 covers the light outlet of the reflector 400, and its shape is the same as the shape of the edge of the light outlet side of the reflecting wall of the reflector 400. The middle part is hollowed out, and the light can pass directly through. The cylinder 300 and the reflector 400 are coaxially arranged, that is, the cylinder 300 is located at the central position of the reflector 400. The cylinder 300 is connected and fixed to the annular portion 501 through a connecting arm 502. The number of the connecting walls 502 can be more than 2. In this embodiment, it is 3, and they are evenly distributed along the circumference. In order to fix the mounting bracket 500 at the light outlet of the reflector 400, the mounting bracket 500 also includes a claw 503 arranged facing the reflector 400. Correspondingly, a ring of convex edges is arranged on the outer side surface of the light outlet of the reflector 400, and the claw 503 and the convex edge are snap-connected. The mounting bracket 500 and the cylinder 300 are integrally formed. During installation, the cylinder 300 is inserted from the light outlet of the reflector 400, and the annular portion 501 abuts against the end surface of the reflecting wall of the reflector 400 at the light outlet. The mounting of the mounting bracket 500 and the reflector 400 by snap connection is completed in one step.

[0023] After the light emitted by the light source 2 is collimated by the reflector 400, in order to further prevent glare, a grille plate 100 is also arranged outside the light outlet of the reflector 400. In this embodiment, it is a wall washing lamp. The lamp body 5 is strip-shaped, and the light sources 2 are arranged along the length direction of the lamp body. The reflectors 400 and the light sources 2 are arranged in one-to-one correspondence, so the light distribution structure 1 is also arranged along the length direction of the lamp body 5. The grille plate 100 is an integral long strip. An optical film 200 is also arranged on the side of the grille plate 100 facing the reflector 400. After the light collimated by the reflector 400 passes through the optical film 200 for longitudinal stretching and mixing of the light colors, it is filtered again by the grille plate 100, and the stray light will be absorbed by the grille plate 100, and finally exits through the light-transmitting panel 4.

[0024] For a wall washing lamp, usually the outgoing light needs to be deflected to one side. Therefore, the light source 2 is inclinedly arranged in the lamp body 5. Specifically, the lamp body is provided with an inclined light source mounting surface 51, and the light source 2 is mounted on the light source mounting surface 51 through a light source plate 3. At the same time, for the light distribution structure 2, the optical axes of the reflector 400, the cylinder 300 and the light source 2 coincide, and the grille plate 100 is inclinedly arranged relative to the light source mounting surface 51, that is, the grille plate 100 forms an inclined angle with the plane perpendicular to the optical axis of the light source 2. Both the grille plate 100 and the light source mounting surface 51 are inclined relative to the mounting plane of the wall washing lamp, and they have the same inclination direction but different inclination angles. The inclined arrangement of the light source mounting surface 51 enables the outgoing light direction of the lighting device in the embodiment to have a certain deflection to achieve the wall washing effect. The inclined arrangement of the grille plate 100 relative to the light source mounting surface 51 can obtain a better anti-glare effect.

[0025] The foregoing description of the preferred embodiments of the present application is for purposes of illustration and description and is not intended to exhaust or limit the present application to the specific forms disclosed. Obviously, many modifications and variations are possible, which may be apparent to those skilled in the art and should be included within the scope of the present application as defined by the appended claims.

Claims

1. A light distribution structure, comprising a light source and a light distribution component, characterized in that: The light distribution component includes a reflector, which includes a light inlet and a light outlet. The light source is arranged at the light inlet of the reflector. The light distribution component also includes a column, which is arranged above the light source and extends from the light outlet of the reflector to the inside of the reflector. There is at least one solid column in the column, and the end face of the column is spaced apart from the light source, and the central axis of the column coincides with the optical axis of the light source.

2. The light distribution structure according to claim 1, characterized in that: The column is made of black light-absorbing material, or the outer surface of the column is provided with a coating of black light-absorbing material.

3. The light distribution structure according to claim 2, characterized in that: The reflector is a convoluted structure, the column and the reflector are coaxially arranged, and a groove is formed at one end of the column facing the light source.

4. The light distribution structure according to claim 2, characterized in that: The column is arranged at the light outlet of the reflector through a mounting bracket, the mounting bracket comprises an annular portion covering the light outlet, and a connecting arm connecting the column and the annular portion, and the mounting bracket is snap-connected to the reflector.

5. The light distribution structure according to claim 2, characterized in that: The distance between the column and the light source is greater than or equal to 5 mm.

6. The light distribution structure according to any one of claims 1 to 5, characterized in that: The light distribution component further includes a grid plate arranged outside the light outlet of the reflector, and the grid plate forms an inclined angle with a plane perpendicular to the optical axis of the light source.

7. The light distribution structure according to claim 6, characterized in that: An optical film is also arranged between the grid plate and the reflector.

8. A lighting device, characterized in that: The lighting device comprises a lamp body and a light distribution structure as claimed in any one of claims 1 to 7 arranged in the lamp body.

9. The lighting device according to claim 8, characterized in that: The lamp body is in a strip shape, and contains a plurality of the light distribution structures, which are arranged along the length direction of the lamp body.

10. The lighting device according to claim 9, characterized in that: The light distribution structure also includes a grid plate arranged outside the light outlet of the reflector, the lamp body includes a light source mounting surface, the light source mounting surface is tilted in the lamp body, and the grid plate is tilted relative to the light source mounting surface, and the two are tilted in the same direction.

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