CN203431724U

CN203431724U - LED rail guarding lamp lens

Info

Publication number: CN203431724U
Application number: CN201320589906.2U
Authority: CN
Inventors: 姚斌; 黄哲人
Original assignee: GUANGDONG HONGLEIDA OPTOELECTRIC TECHNOLOGY Co Ltd
Current assignee: GUANGDONG HONGLEIDA OPTOELECTRIC TECHNOLOGY Co Ltd
Priority date: 2013-09-24
Filing date: 2013-09-24
Publication date: 2014-02-12
Anticipated expiration: 2023-09-24

Abstract

An LED rail guarding lamp lens relates to an LED lens and structurally comprises a lens body, wherein a light source accommodating cavity used for accommodating light sources is arranged on the lens body, the inner wall of the light source accommodating cavity is the light entrance surface of the lens, the outer side surface of the lens is the light exit surface of the lens, a fully reflecting surface is arranged inside the lens body, and the fully reflecting surface completely reflects rays reflected onto the fully reflecting surface to the position of the light exit surface. Through the arrangement of the fully reflecting surface in the LED lens provided by the utility model, in actual use, the fully reflecting surface can completely reflect the rays reflected onto the fully reflecting surface to a road surface, so that the rays emitted from the fully reflecting surface are blocked and shifted, the rays can not be reflected to the sky or other places, and energy is effectively used, meanwhile, rays possibly reflected into eyes of a driver inside a moving car on a road can be blocked by the fully reflecting surface, and potential safety hazards caused by rail guarding lamps to the moving car on the road can be eliminated.

Description

LED guardrail lamp lens

Technical field

The utility model relates to a kind of LED lens, is specifically related to a kind of LED guardrail lamp lens.

Background technology

Guard rail lamp is a kind of lamps applied to roads being arranged on road guard, can play the effects such as beautifying city, road and bridge illumination, safety persuasion, it usings fluorescent tube or light emitting diode conventionally as light source, take continuous guardrail as carrier, forms the guard rail lamp band of linearity or approximately linear.

Existing guard rail lamp generally by arranging fluorescent tube or LED(light emitting diode in plastic pipe) etc. light source form, the light that light source in this kind of guard rail lamp sends can directly penetrate by plastic pipe, the rising angle of guard rail lamp does not have to control substantially, a large amount of light does not have directive road surface, but directive sky or other places, so not only can cause energy waste, and when the light of guard rail lamp is irradiated in the driver eye in the car travelling on road, also can cause interference to driver's sight line, affect safe driving.

Summary of the invention

For addressing the above problem, the utility model provides a kind of most of light that the LED light source as guard rail lamp can be sent to be irradiated to the LED guardrail lamp lens on road surface.

For achieving the above object, the utility model provides following technical scheme.

LED guardrail lamp lens, comprise lens body, described lens body is provided with the light source accommodating cavity for accommodating light source, the inwall of described light source accommodating cavity is the incidence surface of these lens, the lateral surface of these lens is the exiting surface of these lens, in described lens body, be provided with fully reflecting surface, described fully reflecting surface will incide light on it and be totally reflected to the position of described exiting surface.

Wherein, be provided with total reflection cavity in described lens body, a face of the inwall of described total reflection cavity is set to described fully reflecting surface.

Wherein, described exiting surface comprises refraction exiting surface, described fully reflecting surface is positioned at the top side of these lens, and described refraction exiting surface is positioned at the bottom side of these lens, and the angle between the tangent plane of the respective point on described refraction exiting surface and the tangent plane of the respective point on described incidence surface is non-vanishing; Between the tangent plane and the light source in described light source accommodating cavity of the respective point of the tangent plane of the respective point on described incidence surface on described refraction exiting surface, the respective point on described refraction exiting surface and the respective point on described incidence surface be light source that same be take in the light source accommodating cavity ray that is end points respectively with the intersection point of described refraction exiting surface and described incidence surface.

Wherein, the one-body molded setting of these lens.

The beneficial effects of the utility model are: by fully reflecting surface being set in LED lens of the present utility model, in actual use, fully reflecting surface can all reflex on road surface by the light inciding on fully reflecting surface, the light penetrating toward fully reflecting surface direction is like this blocked transfer, this part light just can not be mapped to sky or other places are gone, effectively utilized the energy, simultaneously, may be irradiated to light in the driver eye in the car travelling on road and also be totally reflected face and stop, eliminate the potential safety hazard that guard rail lamp causes to the vehicle travelling on road.

Accompanying drawing explanation

Fig. 1 is the structural representation of the vertical section of LED guardrail lamp lens of the present utility model.

Fig. 2 is the structural representation of LED guardrail lamp lens of the present utility model.

Fig. 3 is the refraction exiting surface of LED guardrail lamp lens of the present utility model and the structural representation of incidence surface.

Fig. 4 is the schematic diagram that LED guardrail lamp lens of the present utility model incides fully reflecting surface and the light path of the light of refraction exiting surface.

Reference numeral comprises: respective point B, the respective point C on incidence surface on light source accommodating cavity 1, total reflection cavity 2, fully reflecting surface 21, incidence surface 3, exiting surface 4, refraction exiting surface 41, lens body 5, light source A, refraction exiting surface.

The specific embodiment

Below in conjunction with specific embodiment, the utility model is elaborated.

As depicted in figs. 1 and 2, LED guardrail lamp lens of the present utility model, comprise lens body 5, lens body 5 is provided with the light source accommodating cavity 1 for accommodating light source, the inwall of light source accommodating cavity 1 is the incidence surface 3 of LED guardrail lamp lens of the present utility model, the lateral surface of LED guardrail lamp lens of the present utility model is the exiting surface 4 of LED guardrail lamp lens of the present utility model, in lens body 5, one side of light source accommodating cavity 1 is provided with fully reflecting surface 21, fully reflecting surface 21 is for inciding light on it and be totally reflected to the position of exiting surface 4, according to the principle of total reflection, the refractive index of the medium of fully reflecting surface 21 both sides is not identical, light need be from optically denser medium directive optically thinner medium, therefore, in the present embodiment, in lens body 5, one side of light source accommodating cavity 1 is provided with total reflection cavity 2, a face of the inwall of total reflection cavity 2 is made as fully reflecting surface 21, in total reflection cavity 2, be full of air, the refractive index of air is less than the refractive index of lens, so in the middle of air and lens, air is optically thinner medium, lens are optically denser medium, the angle of choose reasonable fully reflecting surface 21, as shown in Figure 4, just can make the light that incides fully reflecting surface 21 from lens refraction not occur and all reflect at fully reflecting surface 21.In actual use, when LED guardrail lamp lens of the present utility model is hung on guardrail, make to be provided with that end of fully reflecting surface 21 in the above, light source accommodating cavity 1 is under fully reflecting surface 21, fully reflecting surface 21 just can all reflex on road surface by the light inciding on fully reflecting surface 21 like this, the light penetrating toward fully reflecting surface 21 directions is blocked transfer, this part light just can not be mapped to sky or other places are gone, effectively utilized the energy, simultaneously, may be irradiated to light in the driver eye in the car travelling on road is also totally reflected face 21 and stops, eliminated the potential safety hazard that guard rail lamp causes to the vehicle travelling on road.

Further, exiting surface 4 comprises refraction exiting surface 41, fully reflecting surface 21 is positioned at the top side of LED guardrail lamp lens of the present utility model, described refraction exiting surface 41 is positioned at the bottom side of LED guardrail lamp lens of the present utility model, as shown in Figure 3, the vertical section of LED guardrail lamp lens of the present utility model of take is example, the tangent plane of respective point B and the angle between the tangent plane of the respective point C on incidence surface 3 on refraction exiting surface 41 are non-vanishing, between the tangent plane and the light source A in light source accommodating cavity 1 of the respective point B of the tangent plane of respective point C on incidence surface 3 on refraction exiting surface 41, the respective point B of refraction on exiting surface 41 and the respective point C on incidence surface 3 be light source A that same be take in light source accommodating cavity 1 ray that is end points respectively with the intersection point of refraction exiting surface 41 and incidence surface 3.So, owing to being full of air in light source accommodating cavity 1, the light that light source A in light source accommodating cavity 1 sends incides incidence surface 3 via the air in light source accommodating cavity 1 and enters LED guardrail lamp lens of the present utility model, from refraction exiting surface 41, shine extraneous air again, in this process, light passes through air-lens-air successively, it is optically thinner medium-optically denser medium-optically thinner medium, according to refraction principle, will obtain light path as shown in Figure 4, the light that light source A in light source accommodating cavity 1 sends, the light of the bottom side of directive LED guardrail lamp lens of the present utility model is just relatively partial to road central authorities through the refraction for the first time of incidence surface 3, refraction again through refraction exiting surface 41 has just more been partial to road central authorities, therefore, the light of directive roadside thick grass is also transferred to road surface near the place of road central authorities, effectively utilized the energy, further reduced the waste of the energy.

Wherein, in the present embodiment, LED guardrail lamp lens of the present utility model is integrated.

Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not restriction to the utility model protection domain; although the utility model has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, and not depart from essence and the scope of technical solutions of the utility model.

Claims

1.LED guardrail lamp lens, comprise lens body, described lens body is provided with the light source accommodating cavity for accommodating light source, the inwall of described light source accommodating cavity is the incidence surface of these lens, the lateral surface of these lens is the exiting surface of these lens, it is characterized in that: in described lens body, be provided with fully reflecting surface, described fully reflecting surface will incide light on it and be totally reflected to the position of described exiting surface.

2. LED guardrail lamp lens according to claim 1, is characterized in that: in described lens body, be provided with total reflection cavity, a face of the inwall of described total reflection cavity is set to described fully reflecting surface.

3. LED guardrail lamp lens according to claim 1, it is characterized in that: described exiting surface comprises refraction exiting surface, described fully reflecting surface is positioned at the top side of these lens, described refraction exiting surface is positioned at the bottom side of these lens, and the angle between the tangent plane of the respective point on described refraction exiting surface and the tangent plane of the respective point on described incidence surface is non-vanishing; Between the tangent plane and the light source in described light source accommodating cavity of the respective point of the tangent plane of the respective point on described incidence surface on described refraction exiting surface, the respective point on described refraction exiting surface and the respective point on described incidence surface be light source that same be take in the light source accommodating cavity ray that is end points respectively with the intersection point of described refraction exiting surface and described incidence surface.

4. LED guardrail lamp lens according to claim 1, is characterized in that: the one-body molded setting of these lens.