CN210166611U

CN210166611U - Straight reflecting cup capable of making light spot generate cut-off line

Info

Publication number: CN210166611U
Application number: CN201921046028.3U
Authority: CN
Inventors: 岳崇; 温鸿皓
Original assignee: Shenzhen Xi Er Optical Technology Co Ltd
Current assignee: Shenzhen Xi Er Optical Technology Co Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-03-20
Anticipated expiration: 2029-07-05

Abstract

The utility model provides a can make facula produce straight anti-light cup of cut-off line, the front end of its cavity is the light-emitting opening, the cavity has the left surface, the right flank, top surface and bottom surface, left surface and right flank are parallel, top surface and bottom surface are parallel, be equipped with the installation position of installation light source on the top surface, make the interval between light source center and left surface and the right flank equal, be equipped with the anti-light face just to the light-emitting opening in the anti-light cup, anti-light face overall structure is the concave surface of spotlight, the upper and lower left and right ends of anti-light face extend to the top surface respectively, the bottom surface, the left surface, the right flank, the slope of anti-light face upper end rear side makes the concave surface top forward, the vertical face that is on a parallel with interior left end face at light source. The light can be collected and collimated, and is emitted from the light outlet in a forward concentrated manner, and the formed light spots have obvious boundaries.

Description

Straight reflecting cup capable of making light spot generate cut-off line

Technical Field

The utility model relates to a luminous cup especially relates to a can make facula produce straight anti-light cup of line of cut-off.

Background

Note that the contents described in this section do not represent all the related art.

In the illumination of a monitored scene, an LED is generally used as a light source, and light emitted from the LED is lambertian, and a secondary optical device is required to make the light have directivity due to the monitoring requirement. The general secondary optical device can be a lens or a reflective cup, in the existing illuminating lamp structure, the light emitting direction of the LED is the same as that of the illuminating apparatus, the secondary optical device is difficult to collect the diffused light, the diffused light can cause light pollution, and the secondary optical device is not beneficial to illumination of special scenes such as monitoring and the like.

SUMMERY OF THE UTILITY MODEL

In view of this, in order to solve one of the technical problems in the related art to a certain extent, it is necessary to provide a straight reflective cup capable of generating a cut-off line for a light spot, which can be used together with a camera, and can collect and collimate light rays and emit the light rays from a light outlet in a forward concentrated manner, so that the formed light spot has an obvious boundary.

The utility model provides a straight reflecting cup which can lead the facula to generate a cut-off line, the reflecting cup is provided with a cavity, the front end of the cavity is a light outlet, the cavity is provided with a left side surface, a right side surface, a top surface and a bottom surface, the left side surface is parallel to the right side surface, the top surface is parallel to the bottom surface, the top surface is provided with a mounting position for mounting a light source, so that the distance between the center of the light source and the left side surface and the distance between the center of the light source and the right side surface are equal, a reflecting surface which is opposite to the light outlet is arranged in the reflecting cup, the whole reflecting surface is a condensing concave surface, the upper end, the lower end, the left end and the right end of the reflecting surface respectively extend to the top surface, the bottom surface, the left side surface and the right side surface, the upper end of the reflecting surface inclines backwards to enable the concave surface to face forwards and upwards, and taking a vertical surface, in which the center of the light source is positioned, parallel to the inner left end surface as a reference surface, wherein the light reflecting surface is symmetrical relative to the reference surface.

Furthermore, the light reflecting surface comprises M rows of sequentially connected light reflecting sheets, each row of the light reflecting sheets is composed of N sequentially connected light reflecting units, wherein M is not less than 2, and N is an even number not less than 4.

Further, the light reflecting unit is any one of a rectangular plane, a rhombic spherical surface, a paraboloid or a free-form surface.

Further, at least one of the left side surface, the right side surface, the top surface and the bottom surface can reflect the light of the light source.

Further, at least one of the left side surface, the right side surface, the top surface and the bottom surface can generate diffuse reflection for the light.

Further, at least one of the left side surface, the right side surface, the top surface, and the bottom surface is subjected to a stripe treatment or a frosting treatment.

Further, the lower left corner of the light reflecting surface is substantially coincident with the lower left corner of the light outlet, and the lower right corner of the light reflecting surface is substantially coincident with the lower right corner of the light outlet.

Further, the reflection cup is formed by injection molding.

Furthermore, the emergent light of the reflecting cup is parallel to the horizontal plane or forms an included angle of 0-5 degrees with the horizontal plane.

Compared with the prior art, the beneficial effects of the utility model are that: the light source can be installed at the top surface of anti-light cup, does not influence the emergence of light, and the utility model discloses a concave surface for datum plane left and right sides complete symmetry is as the reflection of light face, can make the positive emergent of concentrating of light collimation of lambertian type form, eliminates most divergent light, and the facula is concentrated and is lighted far away, and the facula that presents has obvious cut-off line.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure in a first direction of the present invention.

Fig. 2 is a schematic perspective view of the second direction of the present invention.

Fig. 3 is a cross-sectional view of the present invention along the horizontal plane.

Fig. 4 is a polar light distribution graph.

Fig. 5 is a light distribution curve diagram of line coordinates.

Fig. 6 is a light spot false color effect graph.

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. It is to be understood that the drawings are designed solely for the purposes of illustration and description and not as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; either mechanically or electrically, and may be internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

It should be further noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-3, the present invention provides a straight reflective cup 100 capable of generating a cut-off line for a light spot, wherein the reflective cup 100 can be formed by injection molding of polycarbonate. The reflector cup 100 has a cavity 10, the front end of the cavity 10 is a light outlet 11, the cavity 10 has a left side surface 12, a right side surface 13, a top surface 14 and a bottom surface 15, the left side surface 12 is parallel to the right side surface 13, the top surface 14 is parallel to the bottom surface 15, and preferably, the left side surface 12 is perpendicular to the top surface 14.

The top surface 14 is provided with an installation position 141 for installing the light source 200, so that the distance between the center of the light source 200 and the left side surface 12 and the distance between the center of the light source 200 and the right side surface 13 are equal, the light reflecting cup 100 is internally provided with a light reflecting surface 20 facing the light outlet 11, the light reflecting surface 20 is integrally constructed into a light-condensing concave surface, and the upper end, the lower end, the left end and the right end of the light reflecting surface 20 respectively extend to the top surface 14, the bottom surface 15, the left side surface 12 and the right side.

The upper end of the light reflecting surface 20 is inclined backward so that the concave surface faces forward and upward, and the upper end of the light reflecting surface 20 is inclined backward so that the concave surface faces forward and upward, preferably, the inclination angle of the light reflecting surface 20 is configured so that the emergent light of the light reflecting cup 100 is parallel to the horizontal plane, or forms an included angle of 0-5 degrees with the horizontal plane. As shown in fig. 3, a vertical plane parallel to the inner left end surface where the center of the light source is located is taken as a reference plane O, and the light reflecting surface 20 is symmetrical with respect to the reference plane O.

The reflecting surface 20 comprises M rows of sequentially connected reflecting sheets 21, each row of the reflecting sheets 21 is composed of N sequentially connected reflecting units 22, and the formed reflecting surface 20 comprises M × N reflecting units 22 (i.e. comprising M rows of reflecting sheets and N columns of reflecting sheets), wherein M is not less than 2, and N is an even number not less than 4, so that the reflecting sheets with equal column numbers are arranged on two sides of the reference surface O. The larger the number of M and N is, the finer the obtained light spot is. In the present embodiment, the light reflecting unit 22 is any one of a rectangular plane, a rhombic spherical surface, a paraboloidal surface, and a free-form surface.

In the present embodiment, at least one of the left side surface 12, the right side surface 13, the top surface 14, and the bottom surface 15 may reflect the light of the light source 200, and preferably, all of the four surfaces may reflect the light of the light source 200, and the four surfaces constitute the secondary light reflecting surface 20. In order to better control the light spot formed by the emergent light and reduce the intensity and brightness of stray light, at least one of the left side surface 12, the right side surface 13, the top surface 14 and the bottom surface 15 can generate diffuse reflection for the light, and in the embodiment, four surfaces are set to generate diffuse reflection. Preferably, at least one of the left side surface 12, the right side surface 13, the top surface 14, and the bottom surface 15 is subjected to a stripe treatment or a frosting treatment.

The lower left corner of the light reflecting surface 20 is substantially coincident with the lower left corner of the light outlet 11, and the lower right corner of the light reflecting surface 20 is substantially coincident with the lower right corner of the light outlet 11, so that the space utilization rate of the light reflecting cup 100 can be improved, and the volume of the light reflecting cup 100 can be reduced.

With reference to fig. 4-6, fig. 4 is a polar coordinate light distribution graph, fig. 5 is a linear coordinate light distribution graph, and fig. 6 is a light spot false color effect graph, most of the light emitted by the light source 200 directly irradiates the reflective surface 20, and is reflected, collected and collimated by the reflective surface 20, the light spots are concentrated, and the scattered light is substantially eliminated. Since the light reflecting surface 20 is symmetrical with respect to the reference plane O, the light quantity and the light angle on both sides of the reference plane O are substantially the same, and the center of the light spot is substantially located on the reference plane O, which can be used in conjunction with a monitoring camera. Because the edge all around of reflection of light face 20 extends to on the corresponding plane for the facula has obvious cut-off line L, and the cut-off line outside does not have unnecessary light almost, compares with current conventional no cut-off line secondary optics, under the roughly the same circumstances of luminous flux, the utility model discloses the facula effect that obtains is better, can prevent that the glare that the afterglow brought dazzles the problem.

Throughout the description and claims of this application, the words "comprise/comprises" and the words "have/includes" and variations of these are used to specify the presence of stated features, values, steps or components but do not preclude the presence or addition of one or more other features, values, steps, components or groups thereof.

Some features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, certain features of the invention, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable combination in different embodiments.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the present invention.

Claims

1. A straight reflecting cup capable of generating a cut-off line for a light spot is characterized in that the reflecting cup is provided with a cavity, the front end of the cavity is a light outlet, the cavity is provided with a left side surface, a right side surface, a top surface and a bottom surface, the left side surface is parallel to the right side surface, the top surface is parallel to the bottom surface, the top surface is provided with a mounting position for mounting a light source, so that the distance between the center of the light source and the left side surface and the distance between the center of the light source and the right side surface are equal, a reflecting surface which is opposite to the light outlet is arranged in the reflecting cup, the whole reflecting surface is a condensing concave surface, the upper end, the lower end, the left end and the right end of the reflecting surface respectively extend to the top surface, the bottom surface, the left side surface and the right side surface, the upper end of the reflecting surface inclines backwards to enable the concave surface to face forwards and upwards, and taking a vertical surface, in which the center of the light source is positioned, parallel to the inner left end surface as a reference surface, wherein the light reflecting surface is symmetrical relative to the reference surface.

2. The straight reflector cup as claimed in claim 1, wherein the reflective surface comprises M rows of sequentially connected reflectors, each row of the reflectors being composed of N sequentially connected reflective units, where M is not less than 2 and N is an even number not less than 4.

3. The straight reflective cup capable of generating a cut-off line for a light spot according to claim 2, wherein the reflective unit is any one of a rectangular plane, a spherical surface of a diamond shape, a paraboloid or a free-form surface.

4. The straight reflective cup for generating a cut-off line for a light spot according to claim 1, wherein at least one of the left side surface, the right side surface, the top surface and the bottom surface is capable of reflecting the light of the light source.

5. The straight reflective cup for generating a cut-off line for a light spot according to claim 4, wherein at least one of the left side surface, the right side surface, the top surface and the bottom surface is capable of generating a diffuse reflection for the light.

6. The straight reflective cup for generating a cut-off line for a light spot according to claim 5, wherein at least one of the left side surface, the right side surface, the top surface and the bottom surface is striped or frosted.

7. The straight reflective cup as claimed in claim 1, wherein the lower left corner of the reflective surface substantially coincides with the lower left corner of the light exit opening, and the lower right corner of the reflective surface substantially coincides with the lower right corner of the light exit opening.

8. The straight reflector cup with cut-off line for light spot as claimed in claim 1, wherein said reflector cup is injection molded.

9. The straight reflector cup as claimed in claim 1, wherein the emergent ray of the reflector cup is parallel to the horizontal plane or has an included angle of 0-5 degrees with the horizontal plane.