CN106152004A - LED car tail light group - Google Patents

Abstract

The present invention relates to an LED lamp suitable for forming an automobile lighting system and an automobile taillight assembly composed of a plurality of the LED lamps. The LED lamp comprises a high-power Lambertian LED and a total internal reflection collimating lens. A new TIR collimating lens is developed in the present invention, which is used to collect light emitted from an LED light source through a light distribution plate, and then redistribute the light to form a light band that meets ECE requirements.

Description

LED automobile tail lamp group

The application is application number 2009101662662,14 days Augusts 2009 applying date, denomination of invention " LED automobile tail lamp Group " divisional application.

Technical field

The present invention relates to a kind of LED for automobile tail light group.

Background technology

Traditional automobile tail light uses halogen light source.Along with growing fast and steadily of past LED light flux during the decade, Ruggedness that LED has due to it, reliability, the long life, the faster response time, low energy consumption, compact structure size, The different designs option that intrinsic red white yellow availability, bigger flexible design degree provide, is now widely used for automobile and shines In bright system.But, owing to the output of its luminous flux is relatively low, therefore the use of LED still suffers from challenge.

On current market, LED automobile tail lamp is little to form light belt, and the most several LED are assembled together.This is basic Can not have and reach maximal efficiency.

The purpose of the present invention is i.e. to overcome the deficiencies in the prior art and problem.

Summary of the invention

The present invention relates to a kind of LED being suitable for formed automobile illuminator, including high-power lambert (Lambertian) LED and total internal reflection (Total Internal Refraction is called for short TIR) collimating lens.In the present invention Develop new TIR collimating lens, for being collected the light sent from LED light source by light distribution panel, then light is carried out shape of reallocating Become to meet the light belt that ECE requires.

Illustrated by the following examples, pending claims and drawing, the apparatus and method related in the present invention Each feature, aspect and advantage will readily appreciate that.

Next the description to certain specific embodiments is the most representative, not to the present invention and Shen thereof Please, application causes any restriction." the lambert LED " that here use refers to the light-emitting diodes in accordance with Lambert cosine law Pipe, Lambert cosine law is to say that radiant intensity becomes with the cosine of the angle Θ between sight line and the surface normal of observer.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:

Fig. 1 a is the side view of LED according to an embodiment of the invention；

Fig. 1 b is the front view of LED according to an embodiment of the invention；

Fig. 2 a is the three-dimensional side view in use of the LED according to the present invention；

Fig. 2 b is the three-dimensional perspective in use of the LED according to the present invention；

Fig. 3 a is the schematic diagram of the lamp system being made up of three LED according to an embodiment of the invention；

Fig. 3 b is the schematic diagram of the lamp system being made up of three LED according to an embodiment of the invention；

Fig. 4 a is that the lamp system of three LED compositions according to the present invention is in the signal to certain distance emission light Figure；

Fig. 4 b is that the lamp system of three LED compositions according to the present invention is in the signal to certain distance emission light Figure；

Fig. 5 a is the schematic diagram of the lamp system used in automobile lighting system according to another embodiment of the present invention；

Fig. 5 b is the schematic diagram of the lamp system used in automobile lighting system according to another embodiment of the present invention；

Fig. 6 a be the brake lamp according to the present invention or stop light be the schematic diagram that a certain distance provides optical illumination；

Fig. 6 b be the brake lamp according to the present invention or stop light be the schematic diagram that a certain distance provides optical illumination；

Fig. 6 c be the brake lamp according to the present invention or stop light be the schematic diagram that a certain distance provides optical illumination；

Fig. 7 is the scattering decorative pattern according to the present invention；

Fig. 8 is the refraction decorative pattern according to the present invention；

Fig. 9 is the embodiment of the automobile lighting system of the LED information display system with the present invention；

Figure 10 is the decomposition chart of the automobile lighting system of the present invention；

Figure 11 a is the schematic diagram of the lamp system according to the present invention；

Figure 11 b is the schematic diagram of the lamp system according to the present invention；

Figure 12 a is the actual test figure to the brake lamp being made up of lamp system and the lamp of the present invention and stop light；

Figure 12 b is the actual test figure to the brake lamp being made up of lamp system and the lamp of the present invention and stop light；

Figure 12 c is the actual test figure to the brake lamp being made up of lamp system and the lamp of the present invention and stop light；

Figure 13 a is the actual test figure to the back-up lamp being made up of lamp system and the lamp of the present invention；

Figure 13 b is the actual test figure to the back-up lamp being made up of lamp system and the lamp of the present invention；

Figure 13 c is the actual test figure to the back-up lamp being made up of lamp system and the lamp of the present invention；

Figure 13 d is the actual test figure to the back-up lamp being made up of lamp system and the lamp of the present invention；

Figure 14 a is the actual test figure to the steering indicating light being made up of lamp system and the lamp of the present invention；

Figure 14 b is the actual test figure to the steering indicating light being made up of lamp system and the lamp of the present invention；

Figure 14 c is the actual test figure to the steering indicating light being made up of lamp system and the lamp of the present invention；

Figure 14 d is the actual test figure to the back-up lamp being made up of lamp system and the lamp of the present invention.

Detailed description of the invention

Illustrate below according to accompanying drawing.

Accompanying drawing 1 is the present invention embodiment for the LED 101 of automobile lighting system.This LED 101 includes that LED accommodates Unit 102 and the TIR lens 104 with above 103 and below 105.Fig. 1 a is the side view of LED 101.TIR lens include TIR outer surface and controlled aspheric collimation lens.TIR lens are designed with the TIR lens of two connected image side, wherein Every side has the convex top connecting inclined-plane upwards, the most smooth formation in inclined-plane antelabium.The bottom of this antelabium connects downward oblique Face.This inclined-plane connects vertical, and then is connected to horizontal convex surface.LED accommodates unit 102 and is positioned at below TIR lens.By this The design of sample, the light that the LED from LED receiving unit 102 sends is sent to a certain distance " F " 106.So, LED sends Light is by surface " A " 105 and surface " B " 103 transmission, and is parallel.

Fig. 1 b is the front view of LED according to an embodiment of the invention.As shown in Figure 1 b, LED 101 total reflection lens It it is hexagon.Described total internal reflection lens is made up of Merlon, PMMA or other optical grade material.

Fig. 2 is the 3-D view of the LED of the present invention in use.It is, light penetrates from lamp.Fig. 2 a is One side view, Fig. 2 b is perspective view.

Fig. 3 a and 3b is the schematic diagram of illuminator according to an embodiment of the invention, and this illuminator includes 3 LED 301.This embodiment is useful in automobile lighting system, particularly to back-up lamp and steering indicating light.

Fig. 4 a and 4b is that the lamp system of three LED compositions according to the present invention is in showing to certain distance emission light It is intended to.

Fig. 5 a and 5b is the signal of the lamp system used in automobile lighting system according to another embodiment of the present invention Figure.Having used 7 LED in this lamp system, it is applicable to brake lamp and stop light.

Fig. 6 a-6c be the brake lamp according to the present invention or stop light be the schematic diagram that a certain distance provides optical illumination.

Lens are placed in above LED lamp system, thus the reflection of light that sends from LED lamp system of impact and scattering.Lens Can have multiple design, as having refraction and/or scattering decorative pattern.Design as disclosed in U.S.6818276, all can be in the application Middle use, the application is with reference to entire contents and is incorporated in the application

The scattering of light that the LED lamp system of the present invention sends is as follows:

$\sin {\mathrm{\α}}_1=\frac{1}{n}\sin \mathrm{\α}$

β=α₁+α₂, α₂=β-α₁

nsin(β-α₁)=sin β

n(sinβcosα₁-cosβsinα₁)=sin β

$\cos {\mathrm{\α}}_1=\frac{1}{n}\sqrt{n^2-{\sin }^2\mathrm{\α}}$

$n(\sin \mathrm{\β}\·\frac{1}{n}\sqrt{n^2-{\sin }^2\mathrm{\α}}-\cos \mathrm{\β}\·\frac{1}{n}\sin \mathrm{\α})=\sin \mathrm{\β}$

$\sqrt{n^2-{\sin }^2\mathrm{\α}}-\mathrm{ctg\β}\·\sin \mathrm{\α}=1$

$\mathrm{ctg\β}=\frac{\sqrt{n^2-{\sin }^2\mathrm{\α}}-1}{\sin \mathrm{\α}}=2\frac{\sqrt{R^2-{\left(\frac{L}{2}\right)}^2}}{L}$

$R=\frac{L\·\sqrt{n^2-2\sqrt{n^2-{\sin }^2\mathrm{\α}+1}}}{2\sin \mathrm{\α}}$

Wherein, α represents the first angle of incidence, α₁Represent first angle of emergence, α₂Representing the second angle of incidence, β represents the second outgoing Angle, the refractive index (refractive index of air is 1) of n representative species.

Fig. 7 depicts a kind of scattering decorative pattern according to the present invention.

The refraction of the light that the LED lamp system of the present invention sends is as follows:

nsinα₂=sin α

α₁=β-α₂, sin β=nsin (β-α₂), sin β=n (sin β cos α₂-cosβsinα₂)

ncosα₂-nctgβsinα₂=1

$\mathrm{ctg\β}=\frac{\cos {\mathrm{\α}}_2-\frac{1}{n}}{\sin {\mathrm{\α}}_2}$

$\mathrm{ctg\β}=\frac{\sqrt{1-\frac{1}{n^2}{\sin }^2\mathrm{\α}}-\frac{1}{n}}{\frac{1}{n}\sin \mathrm{\α}}=\frac{\sqrt{n^2-{\sin }^2\mathrm{\α}}-1}{\sin \mathrm{\α}}=\frac{L}{H}$

$H=\frac{L\sin \mathrm{\α}}{\sqrt{n^2-{\sin }^2\mathrm{\α}}-1}$

Wherein, α represents the first angle of incidence, α₁Represent first angle of emergence, α₂Representing the second angle of incidence, β represents the second outgoing Angle, the refractive index (refractive index of air is 1) of n representative species.Fig. 8 depicts a kind of refraction decorative pattern of the present invention.

Fig. 9 is the embodiment of the automobile lighting system 900 of the LED information display system with the present invention.Illuminator 900 includes brake Lamp 901, stop light 903, steering indicating light 905 and back-up lamp 907.

Figure 10 is the decomposition chart of the automobile lighting system 1000 of the present invention, wherein LED lamp system 1001 and illumination system The compartment 1002 of system housing 1003 is adaptive.

Figure 11 a and 11b shows the LED lamp system 1100 of the present invention, including multiple LED constructed in accordance 1103 and the lens 1101 of light that send for the LED that scatters, reflect or scatter and launch.In this embodiment, adopt By 7 LED.

3 or 7 LED are not the unique selection of automobile tail light group, the one in the most numerous combinations.4,5,8 or 9 LED also can realize meeting the needs of automobile tail light group.The present invention is not limited to the tool of the lamp for formed automobile taillight group Body number.

Testing several LED lamp system in automobile lighting system, result is the most following.

Figure 12 a-12c illustrates the LED of the present invention and the automobile brake lamp of LED lamp system composition and stop light test Figure.Table 1 gives test result and shows how they reach the requirement of ECE.

Table 1

Figure 13 a-13d illustrates the LED of the present invention and the actual test figure of the New Type of Reversing Lamp of LED lamp system composition. Table 2 gives test result and shows how they reach the requirement of ECE.

Table 2

Figure 14 a-14d illustrates the LED of the present invention and the actual test figure of the turn signal of LED lamp system composition. Table 3 gives test result and shows how they reach the requirement of ECE.

Table 3

Above in conjunction with accompanying drawing, the embodiment of present system is described, it should be appreciated that present system is the most just It is limited to well these embodiments, this those of ordinary skill in the art without departing substantially from the scope limited in pending claim On the premise of spirit, its various changes and modifications made all are fallen into protection scope of the present invention.

In order to explain pending claim, can understand as follows:

A) " include " that a word is not precluded from not being listed in the claim provided element or the action occurring other

B) "a" or "an" before being positioned at certain element is not precluded from there is multiple described element；

C) unless specified or limited otherwise, any disclosed device or part, may each be and combine or be further separated into Several parts；

D), outside special declaration, the most all of action or step are required in particular order.

Claims (8)

1. the LED for automobile tail light group, it is characterised in that including:

Total internal reflection lens, has two connected image side, and each of which side has a convex top connecting inclined-plane upwards, described to On the most smooth formation in inclined-plane antelabium；The bottom of described antelabium connects downward inclined-plane；Described downward inclined-plane connects vertical Face, and then it is connected to horizontal convex surface；

And the LED accommodating LED accommodates unit；Described LED accommodates unit and is positioned at the lower section of described total internal reflection lens, make from The light that LED in LED receiving unit sends is sent to a certain distance；The light that described LED sends passes sequentially through described complete interior anti- Penetrate the back and front transmission of lens, and be parallel；

The described LED for automobile tail light group also includes lens, and described lens are placed in described total internal reflection lens front end, described Lens have refraction and/or scattering decorative pattern；

Described LED be emit white light, HONGGUANG, gold-tinted or the lambert LED of orange coloured light；This lambert LED refers in accordance with Lambert cosine The light emitting diode of law；

Described total reflection lens is hexagon.

2. an automobile tail light group, it is characterised in that including:

Multiple LED, each LED includes total internal reflection lens and accommodates the LED receiving unit of LED, having two connected mirrors Image side, each of which side has the convex top connecting inclined-plane upwards, the most smooth formation in described inclined-plane upwards antelabium；Described lip The bottom of edge connects downward inclined-plane；Described downward inclined-plane connects vertical, and then is connected to horizontal convex surface；Described LED sends out The light gone out passes sequentially through the back and front transmission of described total internal reflection lens, and is parallel；

Described also including that lens, described lens are placed in described LED front end for automobile tail light group, described lens have refraction And/or scattering decorative pattern；

Described LED be emit white light, HONGGUANG, gold-tinted or the lambert LED of orange coloured light；This lambert LED refers in accordance with Lambert cosine The light emitting diode of law；

Described total reflection lens is hexagon.

Automobile tail light group the most according to claim 2, it is characterised in that described automobile tail light group includes brake lamp, parking At least one in lamp, steering indicating light and back-up lamp.

4. the LED for automobile lighting system, it is characterised in that before including that LED accommodates unit (102) and has (103) the TIR lens (104) of (105) and below；Described TIR lens (104) include TIR outer surface and controlled aspheric surface collimation Lens；Described TIR lens have two connected image side, and each of which side has the convex top connecting inclined-plane upwards, inclined-plane by The most smooth formation antelabium, the bottom of this antelabium connects downward inclined-plane, and this inclined-plane connects vertical, and then it is convex to be connected to level Face, described LED accommodates unit (102) and is positioned at below TIR lens (104) so that the LED accommodated unit (102) from LED sends out The light that the light gone out is sent to a certain distance and described LED sends pass sequentially through after (105) and above (103) parallel transmission.

LED the most according to claim 4, it is characterised in that after described, (105) are fully reflecting surface.

LED the most according to claim 5, it is characterised in that the light that described LED sends is (105) reflection after described The place straight line intersection of the rear reflection light formed is in virtual focus F.

7. according to the LED described in claim 5 or 6, it is characterised in that before described, the revolution bus of (103) is a concave surface Curve.

LED the most according to claim 7, it is characterised in that described antelabium is non-optical.