CN211780872U - Anti-dazzle cover and lamp - Google Patents

Abstract

The embodiment of the utility model provides an anti-dazzle cover and lamps and lanterns relates to the lighting technology field, the embodiment of the utility model provides an anti-dazzle cover includes: a light inlet; the light outlet is opposite to the light inlet; the side wall, the light inlet and the light outlet surround to form a cavity; the surface of the side wall facing the cavity comprises a plurality of reflecting surfaces, and the curvatures of any two adjacent reflecting surfaces at the intersection line of the reflecting surfaces are not equal. The embodiment of the utility model provides an anti-dazzle cover and lamps and lanterns to realize improving the homogeneity of emergent facula, improve facula quality.

Description

Anti-dazzle cover and lamp

Technical Field

The utility model relates to the lighting technology especially relates to an anti-dazzle cover and lamps and lanterns.

Background

As a new light source, LEDs have become mainstream lighting sources due to their advantages of environmental protection, high light efficiency, long life, and the like. The LED is generally a single-sided light emitting body with a light emitting angle of about 120 degrees, and the light emitting size is relatively concentrated, so that it is easier to achieve ideal light distribution through optical design compared with a conventional light source.

When LEDs are used as illumination light sources, unfavorable luminance distribution tends to occur in the human visual field, or extreme luminance contrast exists in the illumination space, so that visual conditions causing visual discomfort to humans and reducing visibility of objects in the illumination space, which visual phenomenon is called glare.

Fig. 1 is a sectional view of an anti-glare shield of the prior art, as shown in fig. 1, the prior art anti-glare shield is formed by a simple linear rotation, that is, the inner surface of the anti-glare shield of the prior art is a conical surface, and the quality of the emergent light spot of the design needs to be further improved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an anti-dazzle cover and lamps and lanterns to realize improving the homogeneity of emergent facula, improve facula quality.

In a first aspect, an embodiment of the present invention provides an antiglare shield, including:

a light inlet;

the light outlet is opposite to the light inlet;

the side wall, the light inlet and the light outlet surround to form a cavity;

the surface of the side wall facing the cavity comprises a plurality of reflecting surfaces, and the curvatures of any two adjacent reflecting surfaces at the intersection line of the reflecting surfaces are not equal.

Optionally, an intersection line between any two of the reflecting surfaces extends from the light inlet to the light outlet.

Optionally, any two of the reflective surfaces have the same shape.

Optionally, the number of the reflecting surfaces is greater than or equal to 36 and less than or equal to 120.

Optionally, the reflective surface is a convex curved surface convex towards the cavity.

Optionally, the reflective surface is a concave curved surface that is convex away from the cavity.

Optionally, the reflective surface is planar.

Optionally, a coating is disposed on the reflection surface, and the reflectivity of the coating is greater than or equal to 88%.

Optionally, the light outlet is circular in shape.

In a second aspect, an embodiment of the present invention provides a lamp, including a lamp body and the glare shield of the first aspect; the lamp body is positioned on one side of the light inlet of the anti-dazzle cover.

The embodiment of the present invention provides an embodiment, the inner side surface of the sidewall of the antiglare shield facing the cavity is not a smooth surface, but is divided into a plurality of surfaces (i.e. a plurality of reflective surfaces), and the curvatures of any two adjacent reflective surfaces at the boundary line are unequal, that is, the curvatures of two adjacent reflective surfaces at the boundary line are discontinuous. Therefore, light rays irradiating the anti-dazzle cover can be reflected by the plurality of reflecting surfaces, and the light rays reflected by the reflecting surfaces are mixed with each other, so that the light mixing effect is achieved, the uniformity of emergent light spots is improved, and the quality of the light spots is improved.

Drawings

FIG. 1 is a schematic cross-sectional view of an antiglare cap of the prior art design;

fig. 2 is a schematic perspective view of an anti-glare cover according to an embodiment of the present invention;

FIG. 3 is a schematic top view of the dazzle prevention cover shown in FIG. 2;

FIG. 4 is a cross-sectional structural view of the dazzle prevention cover shown in FIG. 2;

fig. 5 is a schematic view of a first state of a lamp according to an embodiment of the present invention;

FIG. 6 is a second state diagram of the lamp shown in FIG. 5;

FIG. 7 is a schematic view illustrating a light extraction effect of the dazzle prevention cover shown in FIG. 1;

fig. 8 is a schematic view illustrating a light emitting effect of the dazzle prevention cover shown in fig. 2.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 2 is a schematic perspective view of an anti-glare cover according to an embodiment of the present invention, fig. 3 is a schematic top view of the anti-glare cover shown in fig. 2, fig. 4 is a schematic cross-sectional view of the anti-glare cover shown in fig. 2, and with reference to fig. 2, fig. 3 and fig. 4, an embodiment of the present invention provides an anti-glare cover 100 including a light inlet 10, a light outlet 20 and a side wall 30. The light exit 20 is opposite to the light entrance 10, and the light entrance 10 and the light exit 20 communicate with each other. The sidewall 30 forms a cavity with the light inlet 10 and the light outlet 20. The surface of the side wall 30 facing the cavity comprises a plurality of reflecting surfaces 31, and the curvatures of any two adjacent reflecting surfaces 31 at the intersection lines thereof are not equal. The reflecting surface 31 may be a portion of the inner surface of the sidewall 30 facing the cavity, and optical characteristics such as reflectivity of the reflecting surface 31 may be related to the material constituting the sidewall 30.

In some possible embodiments, the light inlet 10 and the light outlet 20 are not provided with optical devices, and the light inlet 10 and the light outlet 20 are respectively open at two ends of the sidewall 30. In other embodiments, an optical device may be disposed at the light inlet 10 and/or the light outlet 20, for example, a flat glass or the like may be disposed at the light outlet 20.

In the embodiment of the present invention, the inner side surface of the sidewall 30 of the antiglare cap 100 facing the cavity is not a smooth surface, but is divided into a plurality of surfaces (i.e. a plurality of reflecting surfaces 31), and the curvatures of any two adjacent reflecting surfaces 31 at the boundary line are not equal, that is, the curvatures of two adjacent reflecting surfaces 31 at the boundary line are not continuous. Therefore, the light rays irradiated on the anti-dazzle cover 100 can be reflected by the plurality of reflecting surfaces 31, and the light rays reflected by the reflecting surfaces 31 are mixed with each other, so that the light mixing effect is achieved, the uniformity of emergent light spots is improved, and the quality of the light spots is improved.

Alternatively, referring to fig. 2, 3 and 4, the boundary between any two reflecting surfaces 31 extends from the light inlet 10 to the light outlet 20. That is, the boundary between any two reflecting surfaces 31 extends from the bottom end of the side wall 30 to the top end of the side wall 30. In the embodiment of the present invention, the boundary line between any two reflecting surfaces 31 extends from the light inlet 10 to the light outlet 20, and the inner side surface of the sidewall 30 is completely cut in the axial direction around the optical axis (i.e. the central axis of the anti-glare cover 100), so that the anti-glare cover 100 has a better light mixing effect. Wherein the axial direction is perpendicular to the extension direction of the optical axis and perpendicular to the radial direction from the optical axis towards the side wall 30. In other embodiments, the boundary line between any two reflecting surfaces 31 may extend from the light inlet 10 to a point a, or from a point B to the light outlet 20, where the point a is a point at which the distance between the point a and the light inlet 10 is greater than 0 on a line extending from the light inlet 10 to the light outlet 20, and the point B is a point at which the distance between the point B and the light outlet 20 is greater than 0 on a line extending from the light inlet 10 to the light outlet 20.

Alternatively, referring to fig. 2, 3 and 4, any two reflecting surfaces 31 have the same shape. That is, all the reflecting surfaces 31 have the same shape. The inner side surface of the sidewall 30 is uniformly cut in the axial direction around the optical axis (i.e., the central axis of the dazzle prevention cover 100), so that all the reflection surfaces 31 have the same reflection effect on the light incident thereon, thereby increasing the light mixing effect, improving the uniformity of emergent light spots, and improving the light spot quality. In other embodiments, at least two reflecting surfaces 31 may have different shapes, for example, an even number of reflecting surfaces 31 may be provided, two reflecting surfaces 31 symmetrical with respect to the optical axis may have the same shape, and two reflecting surfaces 31 asymmetrical with respect to the optical axis may have different shapes.

Alternatively, referring to fig. 2, 3, and 4, the number of the reflection surfaces 31 is greater than or equal to 36 and less than or equal to 120. If the number of the reflecting surfaces 31 is less than 36, the number of the reflecting surfaces 31 is too small, the number of the light beams reflected by the reflecting surfaces 31 is too small, and the light cannot be sufficiently mixed; if the number of the reflecting surfaces 31 is larger than 120, the number of the reflecting surfaces 31 is too large, and the larger the number of the reflecting surfaces 31, the closer to the entire continuous smooth surface, which is equivalent to that the inner side surface of the side wall 30 is not divided, and the light cannot be sufficiently mixed. The embodiment of the utility model provides an in, the quantity of plane of reflection 31 is more than or equal to 36, and is less than or equal to 120, has guaranteed that antiglare shield 100 can mix light fully to the light that shines on it.

Further, the number of the reflecting surfaces 31 is greater than or equal to 36 and less than or equal to 50 to further optimize the number of the reflecting surfaces 31.

Alternatively, referring to fig. 2 and 4, the reflecting surface 31 is a convex curved surface that is convex toward the cavity. The advantage that sets up like this lies in, sets up the plane of reflection 31 as the bellied convex curved surface of orientation cavity, and the antiglare shield 100 makes the light that shines antiglare shield 100 slightly diffuse, and the homogeneity of the emergent facula is better after slightly diffusing, has promoted the facula quality.

Exemplarily, referring to fig. 4, the plurality of reflective surfaces 31 includes a first reflective surface 311, and the first reflective surface 311 is a convex curved surface convex toward the cavity. In the cross-sectional view shown in fig. 4, the first reflecting surface 311 is illustrated as a convex curve.

In other possible embodiments, the reflecting surface 31 may also be a concave curved surface that is convex away from the cavity. At this time, the dazzle prevention cover 100 converges the light irradiated thereon, and the angle of the emergent light becomes small.

In other possible embodiments, the reflecting surface 31 may also be a plane. The plane is easier to manufacture than the curved surface, so that the manufacturing process of the antiglare shield 100 can be simplified, and the manufacturing difficulty of the antiglare shield 100 can be reduced.

Alternatively, referring to fig. 2, 3 and 4, the reflecting surface 31 is provided with a plating layer having a reflectivity of 88% or more. That is, the dazzle prevention cover 100 may further include a plating layer provided on the sidewall 30. It will be appreciated that, in general, the same material is plated on both the inner and outer sides of the sidewall 30. The embodiment of the utility model provides an in, be provided with the cladding material on the plane of reflection 31, the reflectivity of cladding material is more than or equal to 88% to can increase the ability that anti-dazzle cover 100 reflected light, thereby can improve the light utilization ratio. It should be noted that, if the coating of the antiglare shield in the existing design shown in fig. 1 is set to have a reflectivity of greater than or equal to 88%, because the inner side surface of the antiglare shield in the existing design is an integrally continuous curved surface, light rays can form undesirable light spots such as bright circles after being reflected to a target surface by one continuous curved surface. Therefore, in the existing design, the plating layer of the anti-dazzle cover only can be a plating layer with low reflectivity, and the color of the plating layer only can be black or matte silver, so that the overall appearance design is limited. The utility model discloses in, because the camber of two adjacent plane of reflection 31 at its boundary line department is discontinuous, the light after being reflected by plane of reflection 31 can the intermix, consequently the utility model discloses can set up the cladding material that the reflectivity is high in the implementation, and can realize the homogeneity of emergent facula simultaneously. The embodiment of the utility model provides an in the colour of cladding material not only can be black or mute silver, can also be the higher bright silver of reflectivity.

Alternatively, referring to fig. 2, 3 and 4, the light outlet 20 is circular in shape. In other embodiments, the light exit 20 may also be a polygon, and the number of sides of the polygon is greater than or equal to 3, which is not limited by the embodiments of the present invention.

Illustratively, referring to fig. 4, the plane of the light inlet 10 intersects the plane of the light outlet 20, that is, the plane of the light inlet 10 is not parallel to the plane of the light outlet 20, and the antiglare cover 100 may be an adjustable antiglare cover, and the adjustable antiglare cover refers to an antiglare cover which can move and/or rotate relative to the lamp body. The glare shield 100 may be used as a non-adjustable glare shield, which is fixed in position with respect to the lamp body.

The embodiment of the utility model provides a still provide a lamps and lanterns, fig. 5 is the utility model provides a first state schematic diagram of lamps and lanterns, fig. 6 is the second state schematic diagram of the lamps and lanterns shown in fig. 5, refer to fig. 5 and fig. 6, the utility model provides a lamps and lanterns include lamp body 200 and the anti-dazzle cover 100 in the above-mentioned embodiment, and lamp body 200 is located anti-dazzle cover 100's income light mouth 10 one side. Because the embodiment of the utility model provides a lamps and lanterns include anti-dazzle cover 100 in above-mentioned embodiment, consequently have the beneficial effect of above-mentioned anti-dazzle cover 100, promptly, shine the light on anti-dazzle cover 100, can be reflected by a plurality of plane of reflection 31, and the light after being reflected by plane of reflection 31 intermix, have reached the effect of mixing light to improve the homogeneity of emergent facula, improve facula quality.

Alternatively, the lamp body 200 is movably coupled to the dazzle prevention cover 100, and the dazzle prevention cover 100 can move and/or rotate with respect to the lamp body 200. In the existing design, in order to reduce the light irradiation on the anti-dazzle cover as much as possible, the adjustable angle of the adjustable anti-dazzle cover needs to be reduced. The adjustable angle of the anti-dazzle cover is reduced, the angle of polarized light is reduced, and the used scenes are correspondingly reduced. In the existing design, if the adjustable angle of the anti-dazzle cover is increased, the light irradiated on the adjustable anti-dazzle cover is increased, and the uniformity of emergent light spots cannot be guaranteed. And the embodiment of the utility model provides a lamps and lanterns, adjustable antiglare shield 100 can be with the light mixed light of incidenting on it for the emergent facula is even, thereby the utility model provides a lamps and lanterns need not to reduce the adjustable angle of antiglare shield 100, and can guarantee simultaneously that the emergent facula is even.

Illustratively, referring to fig. 5, the optical axis of the lamp body 200 is parallel to the optical axis of the dazzle prevention cover 100. The first state means that the dazzle prevention cover 100 is not rotated with respect to the lamp body 200. When the anti-dazzle cover 100 is in the first state, some large-angle light rays exist in the light rays emitted by the lamp body 200 and are incident on the anti-dazzle cover 100, and due to the light mixing function of the anti-dazzle cover 100, the uniformity of emergent light spots is improved.

Illustratively, referring to fig. 6, the optical axis of the lamp body 200 intersects the optical axis of the dazzle prevention cover 100. When the anti-dazzle cover 100 is in the second state, the anti-dazzle cover 100 rotates relative to the lamp body 200, and more light rays (including some light rays with large angles and some light rays with small angles) in the light rays emitted by the lamp body 200 are incident on the anti-dazzle cover 100, so that the uniformity of emergent light spots is improved due to the light mixing function of the anti-dazzle cover 100.

Illustratively, the lamp body 200 may include a light source, a lens, and other structures known in the field of illumination, which are not described in detail herein.

Fig. 7 is a schematic view illustrating a light emitting effect of the antiglare cover shown in fig. 1, and referring to fig. 7, in the conventional design, light reflected by the antiglare cover is not mixed, and undesirable light spots such as bright circles are formed.

Fig. 8 is a schematic view of the light-emitting effect of the anti-glare cover shown in fig. 2, referring to fig. 8, the embodiment of the present invention provides a light ray reflected by the anti-glare cover 100, which is mixed after being reflected by the plurality of reflective surfaces 31, and finally, an even light spot is superimposed on the target surface.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. An antiglare cover, comprising:

a light inlet;

the light outlet is opposite to the light inlet;

the side wall, the light inlet and the light outlet surround to form a cavity;

the surface of the side wall facing the cavity comprises a plurality of reflecting surfaces, and the curvatures of any two adjacent reflecting surfaces at the intersection line of the reflecting surfaces are not equal.

2. The dazzle prevention cover according to claim 1, wherein an intersection line between any two of the reflection surfaces extends from the light inlet to the light outlet.

3. The dazzle prevention cover according to claim 1, wherein any two of the reflection surfaces have the same shape.

4. The dazzle prevention cover according to claim 1, wherein the number of the reflection surfaces is greater than or equal to 36 and less than or equal to 120.

5. The dazzle prevention cover according to claim 1, wherein the reflection surface is a convex curved surface that is convex toward the cavity.

6. The antiglare cover of claim 1, wherein the reflective surface is a concave curved surface convex away from the cavity.

7. The antiglare cover of claim 1, wherein the reflective surface is planar.

8. The antiglare cover of claim 1, wherein the reflecting surface has a plating layer disposed thereon, the plating layer having a reflectivity of 88% or more.

9. The dazzle prevention cover according to claim 1, wherein the shape of the light outlet is a circular shape.

10. A lamp comprising a lamp body and the dazzle prevention cover of any one of claims 1 to 9; the lamp body is positioned on one side of the light inlet of the anti-dazzle cover.

Images