CN103398340A - Side projection LED tail lamp - Google Patents

Abstract

A side-projection LED taillight, comprising an LED light source installed on a substrate, a shielding body located in front of the LED light source in the direction of light output, and a side-projection reflector for reflecting the light emitted by the LED light source, and also includes a full-body for assisting light output Reflective lens, the total reflection lens has a cuboid-shaped main body arranged longitudinally in front of the LED light source side, the end of the main body close to the LED light source is the incident end, and the incident end is provided with an incident surface facing the LED light source and an inclined surface facing away from the LED light source The reflective surface, the incident surface and the reflective surface form a wedge-shaped structure. The side-projection LED tail light provided by the present invention can collect the wasted light energy of the LED light source due to the installation of a total reflection lens that assists light output, and after changing the light path, the light meets the requirements of regulations and reduces the loss of light energy. The main body of the reflective lens is in the shape of a cuboid and arranged vertically, which can reduce the influence on normal light. The invention is applicable to various automobiles.

Description

Side projection LED tail lights

technical field

The invention belongs to the field of auto parts and relates to a taillight, in particular to a side-projection LED taillight.

Background technique

Now the taillights of automobiles are gradually developing from halogen lamps to LED taillights, which have a longer lifespan and better light patterns and colors. LED taillights generally have two layouts: front projection and side projection. The LED light source of the front projection LED taillight is directly exposed, and the graininess is relatively strong, which affects the overall appearance; the LED light source of the side projection LED taillight is hidden and reflected by the side projection. The mirror guides the light emitted by it, which improves the appearance aesthetics, but the side projection reflector reflects all the light to the ideal area, which will cause the loss of light energy. Even if part of the light is not reflected by the side-projection reflector, after this part of light is directly emitted, its emission angle does not meet the requirements of regulations, and it will be wasted.

Contents of the invention

The technical problem to be solved by the present invention is to provide a side-projection LED taillight, which can collect light that does not meet the requirements of regulations and change its optical path, so that it can finally meet the requirements of regulations and reduce light energy loss.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A side-projection LED taillight, comprising an LED light source installed on a substrate, a shielding body located in front of the LED light source in the direction of light output, a side-projection reflector for reflecting the light emitted by the LED light source, and a total reflection lens for assisting light output , the total reflection lens has a cuboid body longitudinally arranged in front of the LED light source side, the end of the main body close to the LED light source is the incident end, and the incident end is provided with an incident surface facing the LED light source and an inclined reflective surface facing away from the LED light source , the incident surface and the reflecting surface form a wedge-shaped structure.

As a limitation of the present invention, a protruding connecting end for fixing the main body is provided at one end of the main body away from the LED light source.

As another limitation of the present invention, the end of the incident end protrudes into the interior of the side-projection LED taillight until the light emitted by the LED light source is completely received by the incident surface without being reflected by the side-projection reflector.

As a third limitation of the present invention, the end of the main body away from the LED light source is a clean planar structure.

Another limitation of the present invention is that the main body is arranged obliquely relative to the longitudinal plane of the side-projection LED taillight.

Owing to having adopted above-mentioned technical scheme, the technical progress that the present invention obtains compared with prior art is:

The side-projection LED tail light provided by the present invention is equipped with a total reflection lens for auxiliary light output, which collects the wasted light energy of the LED light source, and after changing its optical path, the light meets the requirements of regulations and reduces the loss of light energy. The main body of the lens is in the shape of a cuboid and arranged longitudinally, which can reduce the influence on normal light; a protruding connecting end is provided on the main body to facilitate the connection to the main body; the end of the incident end penetrates into the LED light source without side projection reflection The light reflected by the mirror and directly emitted outward is received by the incident surface, which can absorb the light to the greatest extent and reduce the impact on normal light; the end of the main body away from the LED light source is a smooth planar structure, which can ensure the light is emitted The intensity of light can reduce the loss of light energy when passing through the subject; the main body is inclined to make total reflection of light easier.

The invention is applicable to various automobiles.

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

FIG. 1 is a schematic diagram of a side-projection LED taillight in the prior art, and arrows in the figure indicate the direction of light;

2 is a schematic diagram of the overall structure of a side-projection LED tail light according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the light path of the side-projection LED taillight in the embodiment shown in FIG. 2 , and the arrows in the figure indicate the direction of the light.

In the figure: 1. LED light source; 2. blocking body; 3. side projection reflector; 4. substrate; 51. main body; 52. reflective surface; 53. incident surface; 54. connection end.

Detailed ways

Embodiment A side projection LED tail light

The side-projection LED taillight in the prior art as shown in Figure 1 includes an LED light source 1 installed on a substrate 4, a shielding body 2 located in front of the LED light source 1 in the light emitting direction, and reflects the light emitted by the LED light source 1 The side projection mirror 3. Part of the light emitted by the LED light source 1 will be emitted directly, and the emission angle of these light rays does not meet the requirements of regulations, and some of them are reflected by the side projection reflector 3, and their angles do not meet the requirements of regulations. These rays are equivalent to being wasted. , causing a loss of light energy.

The side-projection LED tail light of this embodiment is shown in Figure 2 and Figure 3, and it has increased a total reflection lens for assisting the light output on the basis of the above-mentioned prior art, and this total reflection lens provides for the collection of lost light energy and Conversion, and then make it emit according to the requirements of the regulations. On the basis of mainly relying on the side projection reflector 3 for reflection, the total reflection lens only provides some compensation and reduces the loss of light energy. The effect of the total reflection lens used in this embodiment is different from the total reflection lens used in the front projection LED taillight, because the total reflection lens in the front projection LED taillight is the main reflective component, and in this embodiment it is only used for To compensate, it has to work in conjunction with the side projection mirror 3.

The total reflection lens has a cuboid body 51 longitudinally arranged in front of the side of the LED light source 1. The end of the main body 51 close to the LED light source 1 is the incident end, and the incident end is provided with an incident surface 53 facing the LED light source 1 and facing away from the LED light source. The inclined reflective surface 52 of 1, the incident surface 53 and the reflective surface 52 form a wedge-shaped structure.

An end of the main body 51 away from the LED light source 1 is provided with a protruding connecting end 54 for fixing the main body 51 . Wherein, the longitudinal direction of the side-projection LED tail light refers to the direction in which the light is finally emitted. When the light is finally emitted, it can be regarded as parallel light, and these parallel lights are perpendicular to the axis direction of the LED light source 1 . By setting the angle between the reflective surface 52 and the incident surface 53, after the light enters the interior of the main body 51 from the incident surface 53, total reflection occurs on the reflective surface 52, and then these incident light rays travel along the inner wall surface of the main body 51. Continue to perform multiple total reflections and finally inject, and the area after being injected is located in the functional area required by regulations. The end of the main body 51 far away from the LED light source 1 has a smooth and clean planar structure, which is conducive to the complete emission of light.

The main body 51 is arranged obliquely with respect to the longitudinal plane of the side-projection LED taillight of this embodiment, so that the light entering its interior is more likely to be totally reflected on the reflective surface 52. The longitudinal plane here is along the longitudinal direction of the overall side-projection LED taillight. flat.

In order to absorb the lost light energy to the greatest extent, the end of the incident end penetrates into the side-projection LED taillight of this embodiment until the light emitted by the LED light source 1 is not reflected by the side-projection reflector 3 and directly outwards. The emitted light is completely received by the incident surface 53. In this way, the specific shape and size of the main body 51 can be obtained by geometric methods. On the one hand, the collection effect of light energy is improved. The impact on normal light, because the normal light will not be affected by the incident end and can reach the side projection reflector 3 without hindrance.

Claims (5)

1. A side-projection LED tail light, comprising an LED light source installed on the substrate, a shielding body positioned in front of the LED light source in the direction of light emission, and a side-projection reflector reflecting the light emitted by the LED light source, characterized in that: it also It includes a total reflection lens that assists light output. The total reflection lens has a cuboid body that is longitudinally arranged in front of the LED light source side. The end of the body close to the LED light source is the incident end. The inclined reflective surface of the LED light source, the incident surface and the reflective surface form a wedge-shaped structure. 2. The side projection LED tail light according to claim 1, characterized in that: a protruding connecting end for fixing the main body is provided at the end of the main body away from the LED light source. 3. The side-projection LED taillight according to claim 1, characterized in that: the end of the incident end penetrates into the interior of the side-projection LED taillight until the light emitted by the LED light source is not reflected by the side-projection reflector and directly projected outward All light rays are received by the incident surface. 4. The side-projection LED tail light according to claim 1, characterized in that: the end of the main body away from the LED light source is a clean planar structure. 5. The side-projection LED tail light according to any one of claims 1 to 4, characterized in that: the longitudinal plane of the main body relative to the side-projection LED tail light is set obliquely.

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