CN207378749U - A kind of street lamp plastic lens - Google Patents

Abstract

The utility model is related to optical lens fields, more particularly to a kind of street lamp plastic lens, the top of the lens body is equipped with groove, Lamp cup is equipped in groove, Lamp cup is equipped with to place the accommodating cavity of LED light source, the bottom of chamber of accommodating cavity has the guide-lighting cambered surface of refraction incident ray, and substratum transparent is filled between the leaded light cambered surface and LED light source；Lower convex spherical is protruded into the bottom of lens body down, the lower convex spherical face accommodating cavity；The groove sets frosting on the region in addition to accommodating cavity.

Description

A kind of street lamp plastic lens

Technical field

The utility model is related to optical lens field, more particularly to a kind of street lamp plastic lens.

Background technology

In order to extend the service life of street lamp, need to generally implement to protect on street lamp with lens cover, however lens are not Street lamp can be hindered to be illuminated, therefore it is required that the light transmittance of lens is sufficiently high.But the light transmittance of existing lens is generally relatively low, Only the light transmittance of 88%-90%, lens quality are poor.

Utility model content

The purpose of the application is to avoid above-mentioned shortcoming of the prior art and provide a kind of light transmittance high street lamp Plastic lens.

It is found by the applicant that existing lens, there are air between accommodating cavity and LED light source, and light enters from air During the lens body of lens, since the two is different to the refractive index of light, reflection damage can occur in the interface of lens body for light It loses, accordingly, applicant expects filling substratum transparent between accommodating cavity and LED light source.

For this purpose, providing a kind of street lamp plastic lens, the lens body including plastic cement, the top of the lens body is equipped with recessed Slot, groove is interior to be equipped with Lamp cup, and Lamp cup is equipped with to place the accommodating cavity of LED light source, and the bottom of chamber of accommodating cavity has refraction incident light The guide-lighting cambered surface of line is filled with substratum transparent between the leaded light cambered surface and LED light source；Under the bottom of lens body is protruded into down Convex spherical, the lower convex spherical face accommodating cavity；The groove sets frosting on the region in addition to accommodating cavity.

Wherein, the substratum transparent is layer of silica gel.

Wherein, multiple equally distributed installation suspension columns are additionally provided at the top of the lens body.

Wherein, the Lamp cup has multiple, and each Lamp cup array arrangement is in groove.

Wherein, the array is rectangular array.

Wherein, the groove is additionally provided with multiple circular limit holes for being arranged into rectangular array.

Wherein, the height of the guide-lighting cambered surface is 2.5-2.8mm.

Wherein, the height of the lower convex spherical is 3-3.5mm.

The advantageous effect of the application：

By being filled with substratum transparent between guide-lighting cambered surface and LED light source, since substratum transparent and lens body are all Colloidal materials, the refractive index of the two is suitable, and reflection loss is less when light enters the lens body of lens by substratum transparent, makes More light are able to project by lens, so as to improve the light transmittance of lens, and by groove in addition to accommodating cavity Region frosting is set, the light diffusing reflection inside the lens body that will be incident upon on frosting is to lower convex spherical, the convex ball under It is projected after the refraction of face, increases the amount of light of lower convex spherical.

Description of the drawings

Fig. 1 is the diagrammatic cross-section of the Lamp cup of the application.

Fig. 2 is the structure diagram of street lamp plastic lens.

Specific embodiment

The application is further described with the following Examples.The application is described further using attached drawing, but it is attached Embodiment in figure does not form any restrictions to the application, for those of ordinary skill in the art, is not paying creativeness On the premise of work, other attached drawings can also be obtained according to the following drawings.

Street lamp plastic lens as depicted in figs. 1 and 2, the lens body including plastic lens, the top of the lens body Portion is equipped with groove 1, and Lamp cup 2 is equipped in groove 1, and Lamp cup 2 is equipped with to place the accommodating cavity 21 of LED light source, the chamber of accommodating cavity 21 Bottom has the guide-lighting cambered surface 211 of refraction incident ray, and lower convex spherical 212 is protruded into the bottom of lens body down, convex ball under this When the light that LED light source is sent enters lens body, lower convex spherical is refracted to by guide-lighting cambered surface 211 for 212 face accommodating cavity 21 of face On 212, then projected after being reflected by lower convex spherical 212 outside lens body, it is wide by the range of exposures for reflecting lens twice.Its Full substratum transparent is filled between middle leaded light cambered surface 211 and LED light source, since substratum transparent is suitable with the refractive index of lens body, Reflection loss is less when light enters the lens body of lens by substratum transparent so that more light are able to penetrate by lens Go out, so as to improve the light transmittance of lens.Further, the region on groove 1 in addition to accommodating cavity 21 sets frosting, will penetrate Light diffusing reflection inside lens body on to frosting is projected after being reflected by lower convex spherical 212, made to lower convex spherical 212 The amount of light of lower convex spherical 212 increases.

Preferably, substratum transparent selects layer of silica gel, is high active material, refractive index is closer to plastic lens, thoroughly Light transmittance is up to 98% when mirror is equipped with layer of silica gel.

Preferably, multiple equally distributed installation suspension columns 3 are additionally provided at the top of lens body, lens body passes through mounting post Foot 3 is fixed on street lamp.

Preferably, Lamp cup 2 has multiple, and each 2 array arrangement of Lamp cup is in groove 1.Wherein array is rectangular array.

Preferably, groove 1 is additionally provided with multiple circular limit holes 4 for being arranged into rectangular array.

Preferably, the height of guide-lighting cambered surface 211 is 2.5mm, and the height of lower convex spherical 212 is 3.47mm.By fixed Height ratio between guide-lighting cambered surface 211 and lower convex spherical 212, under conditions of intensity of illumination is ensured so that illumination range compared with Greatly.

Finally it should be noted that above example is only to illustrate the technical solution of the application rather than the application is protected The limitation of scope is protected, although being explained in detail with reference to preferred embodiment to the application, those of ordinary skill in the art should Work as understanding, the technical solution of the application can be modified or replaced equivalently, without departing from the reality of technical scheme Matter and scope.

Claims (8)

1. a kind of street lamp plastic lens, the lens body including plastic cement, it is characterised in that：The top of the lens body is equipped with recessed Slot, groove is interior to be equipped with Lamp cup, and Lamp cup is equipped with to place the accommodating cavity of LED light source, and the bottom of chamber of accommodating cavity has refraction incident light The guide-lighting cambered surface of line is filled with substratum transparent between the leaded light cambered surface and LED light source；Under the bottom of lens body is protruded into down Convex spherical, the lower convex spherical face accommodating cavity；The groove sets frosting on the region in addition to accommodating cavity.

2. a kind of street lamp plastic lens as described in claim 1, it is characterised in that：The substratum transparent is layer of silica gel.

3. a kind of street lamp plastic lens as described in claim 1, it is characterised in that：It is additionally provided at the top of the lens body more A equally distributed installation suspension column.

4. a kind of street lamp plastic lens as described in claim 1, it is characterised in that：The Lamp cup has multiple, each Lamp cup battle array Row are arranged in groove.

5. a kind of street lamp plastic lens as claimed in claim 4, it is characterised in that：The array is rectangular array.

6. a kind of street lamp plastic lens as claimed in claim 5, it is characterised in that：The groove, which is additionally provided with, multiple is arranged into square The circular limit hole of shape array.

7. a kind of street lamp plastic lens as described in claim 1, it is characterised in that：The height of the leaded light cambered surface is 2.5- 2.8mm。

8. a kind of street lamp plastic lens as claimed in claim 7, it is characterised in that：The height of the lower convex spherical is 3- 3.5mm。