CN201259147Y

CN201259147Y - LED street lamp lens unit

Info

Publication number: CN201259147Y
Application number: CNU2008201365050U
Authority: CN
Inventors: 李镭
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-11
Filing date: 2008-09-11
Publication date: 2009-06-17
Anticipated expiration: 2018-09-11
Also published as: WO2010028594A1

Abstract

The utility model discloses an LED street lamp lens unit, which comprises an LED lamp, a convex lens, a shell and a support fixed in the shell. The utility model is characterized in that a cambered lens is arranged on the outer side of the convex lens and is semicircular column-shaped; the cambered lens can diffuse incident round luminous spots in the longitudinal direction, and the emergent light is in oblong shape or rhombic shape. By adopting the cambered lens, while the irradiated area is increased, smooth transition is achieved, thus effectively controlling the light decay, improving the effective luminosity factor of an LED illuminant, and increasing the optical path of the LED illuminant so that the lamplight can be projected farther. The utility model has the advantages that the controllability of the LED illuminant is improved; the light spots of the lamp are in oblong or rhombic shape; the effective irradiated area of the lamplight is enlarged; the LED lamp lens unit is more effective in divergence; and the light spots are more uniform without visible shadow light and stripes by comparing the LED street lamp lens unit with the traditional street lamp to diverge light by virtue of the refraction and reflection of the lamp.

Description

The LED street lamp lens device

Technical field

The utility model relates to a kind of diverging light source lens device, particularly a kind of lens devices that is applied in fields such as street lamp, floodlight, projecting lamp.

Background technology

LED (light emitting diode) has the luminous intensity height, few characteristics that consume energy, thus more and more LED is applied to the street lamp field at present, to reach purpose of energy saving.

But owing to what LED sent is a branch of light rather than diverging light, thus in order to adapt to the situation on road surface, generally need before LED, add a divergent lens (convex lens), as the disclosed LED street lamp of CN201016464Y.The hot spot after but the process convex lens are dispersed is the hot spot of a circle, is not suitable for the situation on road surface.Because generally the width than the road surface is bigger for the distance between two street lamps in road surface,, cover the particularly distance between two street lamps of road surface as much as possible so relatively the street lamp of Shi Heing should be to send the prolate shape hot spot.

So for longer illumination length relatively is provided, the lamp holder of disclosed LED road-light light-source of CN1936417A and the disclosed high-brightness LED street lamp of CN2896006Y has changed the length of the direction of illumination of partial L ED with the increasing irradiation.If but the LED negligible amounts, as CN1936417A, its radiation response is undesirable, tangible hot spot and blind spot can appear, and if a fairly large number of words of LED, as CN2896006Y, the energy that is consumed is also more, and causes the raising of cost, is not suitable for extensive popularization.

The disclosed a kind of LED street lamp of CN101251231A adopts the mode of biconvex lens, but still has the tangible problem of hot spot vestige.The disclosed a kind of high-power LED street lamp of CN201074752Y adopts the structure of spreadlight lens, and that the problem of its existence remains transition effect is bad, does not solve the problem of hot spot vestige.

The disclosed high-power LED street lamp of CN201066057Y has adopted the deflection angle design of more complicated, and its design and production cost equally are unsuitable for extensive popularization all than higher with CN2896006Y.

So in sum, high-powered LED lamp at present commonly used, and to adopt single lens arrangement, its shortcoming be optically focused and light evenly can not being disperseed, and hot spot is rounded, and poor controllability also can not satisfy the use of the above LED high power light source of 1W.More do not reach the needs of the higher or lamp far away of street lamp more than 10 meters, high-rise building residence floodlight aplanatism.The disclosed lens devices of the utility model can effectively address the above problem.

The utility model content

The purpose of this utility model provides a kind of LED street lamp lens device, adopts a set of lenses to realize evenly dispersing of light, overcomes to have decay and the uneven problem of hot spot when road-light light-source commonly used is dispersed.

The purpose of this utility model is to be achieved through the following technical solutions:

A kind of LED street lamp lens device, comprise LED lamp, convex lens, housing and be fixed on the support of enclosure interior, described LED lamp is positioned at the enclosure interior bottom side, the LED lamp is fixed on the radiator and with radiator and closely is connected, described convex lens are positioned at the front end of LED lamp, and convex lens are fixed on the support, also wrap curved lenses, described curved lenses is semi-cylindrical, is positioned at the outside of convex lens.

Adopt curved lenses when increasing irradiated area, to realize transition stably, controlled light decay effectively, improved effective luminance of led light source, increased the light path of led light source, make light shine fartherly.It is also advantageous in that the controllability that has increased led light source, make the hot spot of lamp be oblong or rhombus, enlarged effective irradiated area of light, rely on the refraction reflection of light fixture will reach the purpose of dispersing than conventional road lamp, the better effects if of dispersing of the present utility model, and the good uniformity of hot spot does not have obvious shade light and speckle.

Description of drawings

With embodiment the utility model is described in further detail with reference to the accompanying drawings below.

Fig. 1 is the Facad structure figure of the utility model embodiment;

Fig. 2 is an A-A schematic cross-section among Fig. 1;

Fig. 3 is a B-B schematic cross-section among Fig. 1.

Among the figure:

1, LED lamp; 2, convex lens; 3, housing; 4, support; 5, curved lenses.

The specific embodiment

As Figure 1-3, LED street lamp lens device described in the utility model, comprise LED lamp 1, convex lens 2, housing 3 and be fixed on the support 4 of housing 3 inside, described LED lamp 1 is positioned at housing 3 inner bottom sides, and LED lamp 1 is fixed on the radiator and with radiator and closely is connected, and described convex lens 2 are positioned at the front end of LED lamp 1, convex lens 2 are fixed on the support 4, also wrap curved lenses 5, saturating 5 mirrors of described arc are semi-cylindrical, are positioned at the outside of convex lens 2.Preferably, described convex lens 2 adopt lenticular lens, and the geometric center of LED lamp 1, convex lens 2 and curved lenses 5 is located along the same line, and the three is parallel to each other.Two curved surfaces on the lenticular lens 2 can be by the intensity of protruding radian different adjustment light ejaculation, and curved lenses 5 can be used to regulate the hot spot form of plane of illumination.

The principle of luminosity of LED street lamp lens device described in the utility model is: the light that LED lamp 1 is launched shines the center of

convex lens

2,2 pairs of incident ray refractions of convex lens back forms the diverging light of a branch of circle, and circular diverging light shines the plane of curved lenses 5.Curved lenses 5 laterally be equivalent to convex lens, light is further dispersed, curved lenses 5 vertically be equivalent to the planar lens that several thin and thicks do not wait, incident ray is not played disperse function.So just formed laterally and further dispersed the constant effect of longitudinal divergence degree, thereby formed the diverging light of long ellipse or rhombus, can be under the situation of lateral adaptation width of roadway, better road pavement vertically shines.

And because dispersing of this device adopts the lens 5 of arc to realize, transition effect is stable gently, comparing, those adopt the street lamp of catoptric arrangement, can effectively reduce light decay, improve effective luminance of light source, increase the light path of light source, made the farther of light-illuminating, thereby enlarged effective irradiated area of light.

At present, high-power LED street lamp is subjected to structural constraint, all adopts synthetic transparent material to make lens, and is very easily aging because of illumination and Temperature Influence, influences printing opacity, is one of key factor that causes the reduction of lamp brightness value.These lens can use the K9 glass material to make long, anti-aging, corrosion-resistant, good stability of its life-span of lens.

Claims

1, a kind of LED street lamp lens device, comprise LED lamp, convex lens, housing and be fixed on the support of enclosure interior, described LED lamp is positioned at the enclosure interior bottom side, convex lens are fixed on the support, it is characterized in that also wrap curved lenses, described curved lenses is semi-cylindrical, be positioned at the outside of convex lens, described convex lens are positioned at the front end of LED lamp.

2, LED street lamp lens device according to claim 1 is characterized in that, described convex lens are lenticular lens.

3, LED street lamp lens device according to claim 1 and 2 is characterized in that, the geometric center of LED lamp, convex lens and curved lenses is located along the same line, and the three is parallel to each other.