CN201875635U

CN201875635U - Light-reflecting cup

Info

Publication number: CN201875635U
Application number: CN2010205989050U
Authority: CN
Inventors: 师丹玮; 江利国
Original assignee: SHENZHEN TOL TECHNOLOGY Co Ltd
Current assignee: SHENZHEN TAISHAN SPORTS TECHNOLOGY CORP., LTD.
Priority date: 2010-11-10
Filing date: 2010-11-10
Publication date: 2011-06-22
Anticipated expiration: 2020-11-10

Abstract

The utility model relates to a light-reflecting cup which comprises a cup body, wherein the top of the cup body is provided with a rectangular opening, the center at the bottom of the cup body is provided with an installing hole for installing a light source, the inner wall of the cup body is formed by mutually splicing four light-reflecting surfaces, and each light-reflecting surface is spliced by at least two planes which have different inclined angles with a longitudinal axis which penetrates through the top and the bottom of the cup body. The opening on the surface of the cup body is rectangular, so that a rectangular effective light area is formed to adequately use the light energy; the reflection by means of partitioned area is designed according to the reflection angle of the light source, so that the light energy can be evenly distributed within the effective area; and no obvious dark space or clear zone exists, and a light reflecting surface is formed by the planes, so that the light-reflecting cup is simple in structure, and good for machining and reducing the cost.

Description

A kind of reflector

Technical field

The utility model relates to a kind of monitor or security protection camera light filling auxiliary equipment, more particularly, relates to a kind of reflector.

Background technology

Effective image pickup scope of monitor or security protection camera generally 60 degree angles up and down and about in the rectangular area at 75 degree angles, in insufficient light, need carry out light filling with the LED lamp.According to the effect of light filling with to the principle that makes full use of of luminous energy, the light that requires to replenish is limited in the effective angle scope as far as possible, and the distribution of the luminous energy that requires as far as possible evenly.The irradiating angle of common led light source is bigger, generally all more than 150 degree angles, if do not carry out optically focused by optical system, will make optical energy irradiation greatly on inactive area, thereby make efficient reduce optical energy loss, therefore adopt effective Optical devices to carry out the light path rectification and be very important.Existing Optical devices generally adopt dual mode: a kind of is the mode of using Lamp cup, generally be that LED light is pooled a branch of directional light, the hot spot that forms is less, as reaching the effect of area illumination, must add other optical element and be used light is evenly scattered, and the structure of Lamp cup itself also is unfavorable for the heat radiation of LED lamp; Another kind is the mode of reflector, side external surface is generally parabola shaped, with LED light or gather into a branch of directional light, or forms a circle or oval-shaped zone, be not inconsistent with the rectangular illumination zone that requires and lampshade itself is a sphere shape, difficulty of processing is big and be unfavorable for installing and fixing.

Summary of the invention

The technical problems to be solved in the utility model is, big and LED light skewness causes the low defective of luminous efficiency at the above-mentioned difficulty of processing of prior art, and a kind of reflector is provided.

The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of reflector, comprise cup, the top of described cup is provided with a rectangular aperture, bottom centre has an installing hole that is used to install light source, the inwall of described cup is spliced to form mutually by four reflective surfaces, and described reflective surface has the plane of different inclination angle to be spliced to form by at least two longitudinal axis with the top of passing described cup and bottom.

In a kind of reflector of the present utility model, arbitrary described reflective surface has the plane of different inclination angle to be spliced to form by three with described longitudinal axis.

In a kind of reflector of the present utility model, successively decrease from bottom to top one by one in the inclination angle of described plane and described longitudinal axis.

In a kind of reflector of the present utility model, the profile of described reflector is a cube.

Implement reflector of the present utility model, has following beneficial effect: because the effective lighting zone that the cup surface opening is a rectangle can form a slice rectangle has made full use of luminous energy, and carrying out the sectional area reflective design by the light source reflection angle can make luminous energy evenly distribute in the effective coverage, do not have obvious dark space or clear zone and reflecting surface and form by the plane, simple in structure be beneficial to processing and reduce cost.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, and in the accompanying drawing: Fig. 1 is the perspective view of the utility model reflector; Fig. 2 is the vertical view of the utility model reflector; Fig. 3 is the cutaway view of the utility model reflector; Fig. 4 is the fundamental diagram of the utility model reflector; Figure number explanation: 1 reflective surface, 2 installing holes, 3 reflective surface AB, 4 reflective surface CD.

The specific embodiment

As Figure 1-3, in the preferred embodiment of reflector of the present utility model, the profile of reflector is a cube, and the side that is provided with rectangular aperture is the end face of reflector, and on the other side is the bottom surface.The light that the rectangular aperture of end face is used to light source is sent can penetrate and meet the requirement of throwing light in the rectangular area, and the bottom has the installing hole 2 that is used to install light source, and light source is generally the LED lamp.The inwall of reflector is to be spliced to form each other by four reflective surface, and reflective surface adopts the high reflecting rate material usually, and as can be seen from the figure, reflective surface has the plane of different inclination angle to be spliced to form by at least two longitudinal axis with the top of passing cup and bottom.Because Energy distribution is inhomogeneous on each angle of LED light itself, the effect of two plane reflections of each reflective surface 1 usefulness of reflector is not ideal enough, therefore in the present embodiment, easy to process in order to make, each reflective surface 1 all is that be spliced to form and inclination angle each plane and longitudinal axis the trend that tapers off successively from bottom to top by different plane, three inclinations angle.It should be noted that, the inclination angle of each plane and longitudinal axis is not limited to one by one successively decreases, also can be designed to increase progressively one by one, even can set the inclination angle of each plane and longitudinal axis as required, in the present embodiment, in order to make the convenient continuity that guarantees simultaneously between plane and the plane of processing, the therefore form that the inclination angle of plane and longitudinal axis is designed to successively decrease one by one.Finely tune by distribution reflection ray angle, adjust four reflective surfaces 1 of reflector meticulously after, the field of illumination will present more satisfactory rectangular shape, made full use of luminous energy and the zone in brightness ratio more even.

Now further set forth the operation principle of reflector in conjunction with Fig. 4: as shown in Figure 4, reflective surface AB is two relative reflective surfaces with reflective surface CD, supposes that LED light rink corner is 180 degree, and requires last all light all to be radiated in the scope of rink corner 60 degree.Now considering the reflection case of light from the YZ direction, is example with reflecting surface AB 3, and light is divided into three angular ranges, scope one be 0 spend to 30 the degree, scope 2 30 spend to 60 the degree, scope 3 60 spend to 90 the degree (among the figure dotted line be 0 the degree horizontal line).Light in the scope one is without any need for rectification; Light in the scope two is reflected by reflecting surface B, the angular range of emergent ray be 0 the degree to 30 the degree, drop in the effective range; Light in the scope three is reflected by reflecting surface A, the angular range of emergent ray be 0 the degree to 30 the degree, also drop in the effective range.The principle of reflection of reflective surface CD 4 and reflecting surface AB 3 are similar, no longer narrate at this, all light can be reflected in the effective angle scope.

Reflective surface design principle on the just direction of reflector (YZ direction) that more than illustrates, direction is identical therewith for the design principle on another direction (XZ), just because of the field of view angle difference, also corresponding some variations of generation of reflection angle.In practical design, the angle that can adjust each reflecting surface 1 can adapt to the lighting demand of various angles rectangular area.In addition, the substrate of reflecting surface 1 can be adopted material cheaply, can reduce cost for transparent reflector, and be difficult for aging.Because the sectional area reflective design that reflective surface 1 adopts, and reflective surface 1 is made up of the plane, is beneficial to process and reduce cost.

Above embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement in view of the above, can not limit protection scope of the present invention.All equalizations of being done with claim scope of the present invention change and modify, and all should belong to the covering scope of claim of the present invention.

Claims

1. reflector, comprise cup, it is characterized in that, the top of described cup is provided with a rectangular aperture, bottom centre has an installing hole that is used to install light source, the inwall of described cup is spliced to form mutually by four reflective surfaces, and described reflective surface has the plane of different inclination angle to be spliced to form by at least two longitudinal axis with the top of passing described cup and bottom.

2. reflector according to claim 1 is characterized in that, arbitrary described reflective surface has the plane of different inclination angle to be spliced to form by three with described longitudinal axis.

3. reflector according to claim 2 is characterized in that successively decreasing from bottom to top one by one in the inclination angle of described plane and described longitudinal axis.

4. reflector according to claim 1 is characterized in that, the profile of described reflector is a cube.