CN100570209C

CN100570209C - LED light emitting device capable of mixing light through fluorescent material

Info

Publication number: CN100570209C
Application number: CNB2007101543791A
Authority: CN
Inventors: 萧德瑛; 吴威宏; 彭柏翰
Original assignee: Contrel Technology Co Ltd
Current assignee: Contrel Technology Co Ltd
Priority date: 2007-09-26
Filing date: 2007-09-26
Publication date: 2009-12-16
Anticipated expiration: 2027-09-26
Also published as: CN101398152A

Abstract

The invention relates to an LED light-emitting device for mixing light through fluorescent substances, which comprises: a substrate; the LED chip is arranged on the substrate; the bottom of the first lens is arranged on the substrate, and the LED chip is covered by the lens; and a second lens disposed above the first lens, the second lens containing a fluorescent substance. Therefore, the light emitted by the LED chip is refracted by the first lens and then enters the second lens, and is mixed by the fluorescent substance of the second lens, so that the effect of making the light uniform is achieved, the problem of glare to human eyes can be prevented, and the LED lens can be applied to lighting engineering.

Description

The LED light-emitting device of mixed through fluorescent substance

Technical field

The present invention relates to luminescence component, be meant a kind of LED light-emitting device of mixed through fluorescent substance especially.

Background technology

Early stage LED (light emitting diode), its output light source intensity is lower, and application is limited, and in the recent period LED has developed the LED that high brightness at manufacturer's the following of research and development of constantly bringing forth new ideas.Yet the lens that existing high-brightness LED is arranged in pairs or groups are still traditional LED lens, the control that it is excessive the light source of LED derive direction, cause existing lens that led light source intensity is concentrated on middle section, make that the light that LED sent is the light type of sleeve configuration, therefore the illumination on sightingpiston and inhomogeneous.

In addition, on illuminating engineering, often need avoid the generation of dazzle, because dazzle is very big for the influence that human eye caused.When very strong light source went directly eyes, in order to reduce light-inletting quantity, pupil can dwindle by nature, look and see that power is promptly because reduce, so the eyes muscular tone produces the eyes uncomfortable feeling, thereby cause image to be tending towards fuzzy, and then caused problems such as reading is painstaking, eye fatigue.And use at present lens at LED, and all be for light source is concentrated to reach the better intensity of light source, this produces dazzle and causes discomfort human eye easily.

Summary of the invention

Main purpose of the present invention is to provide a kind of LED light-emitting device of mixed through fluorescent substance, and it can make light that LED sends through the mixed light of fluorescent material and more even, can concentrations, and then can prevent from human eye is produced the problem of dazzle.

An of the present invention purpose is to provide a kind of LED light-emitting device of mixed through fluorescent substance, and it has the effect of anti-dazzle, can be applied on the illuminating engineering.

So in order to reach aforementioned purpose, the LED light-emitting device according to a kind of mixed through fluorescent substance provided by the present invention includes: a substrate; One led chip is located on this substrate; One first lens be arranged on this substrate with its bottom, and this led chip are by this lens institute cover cap; And one second lens, being positioned at this first lens top, these second lens contain fluorescent material.By this, the light refraction of these first lens of process earlier that led chip is sent, enter this second lens again, and carry out mixed light by fluorescent material by these second lens, reach and make effect of uniform light, and then can prevent from human eye is produced the problem of dazzle, and can be applicable on the illuminating engineering.

Description of drawings

Fig. 1 is the cross-sectional schematic of the present invention's first preferred embodiment;

Fig. 2 is the cross-sectional schematic of the present invention's first preferred embodiment, and the demonstration fluorescent material is located at the state of the second lens end face;

Fig. 3 is the cross-sectional schematic of the present invention's first preferred embodiment, and the demonstration fluorescent material is located at the state of the second lens bottom surface;

Fig. 4 is the cross-sectional schematic of the present invention's first preferred embodiment, and the demonstration fluorescent material is located at the state of the second lens end face and bottom surface;

Fig. 5 is the cross-sectional schematic of the present invention's second preferred embodiment.

[primary clustering symbol description]

The LED light-emitting device of 10 mixed through fluorescent substance

11 substrate 21LED chips, 31 first lens

41 second lens, 45 fluorescent materials

The LED light-emitting device of 50 mixed through fluorescent substance

71 first lens, 81 second lens, 85 fluorescent materials

The specific embodiment

In order to describe structure of the present invention and characteristics place in detail, lift two following preferred embodiments now and cooperate graphic explanation as after, wherein:

As shown in Figure 1, the LED light-emitting device 10 of a kind of mixed through fluorescent substance that the present invention's first preferred embodiment is provided mainly is made up of a substrate 11, a led chip 21, one first lens 31 and one second lens 41, wherein:

This led chip 21 is located on this substrate 11.

These first lens 31 be arranged on this substrate 11 with its bottom, and this led chip 21 are by this lens institute cover cap.

These second lens 41 are positioned at this first lens, 31 tops, and these second lens 41 contain fluorescent material 45, and this fluorescent material 45 is laid in these second lens 41.This second lens 41 and these first lens 31 preset distance of being separated by, when actual manufacturing, can see through a tool (not shown) or a housing (not shown) fix these second lens 41 and these first lens 31 between distance.And the refractive index of these second lens 41 and these first lens 31 can be identical or different, is to be difference in the present embodiment.

By by said structure, the light that this led chip 21 is sent, understand the refraction of these first lens 31 of process and outwards ejaculation, enter this second lens 41 again, light can act on this fluorescent material 45, this fluorescent material 45 promptly absorbs light ray energy and conversion, and sends uniform light, can reach by this to make effect of uniform light.

Please consult Fig. 2 again, the fluorescent material 45 on these second lens 41 also can be and is coated with the form of being located at these second lens, 41 end faces.

Again as shown in Figure 3, the fluorescent material 45 on these second lens 41 also can be and is coated with the form of being located at these second lens, 41 bottom surfaces.

Again, as shown in Figure 4, the fluorescent material 45 on these second lens 41 also can be and is coated with the form of being located at these second lens, 41 end faces and bottom surface.

See also Fig. 5 again, the LED light-emitting device 50 of a kind of mixed through fluorescent substance that the present invention's second preferred embodiment is provided is taken off first embodiment before mainly generally being same as, and difference is:

These first lens, 71 end faces have predetermined section configuration, and with this second embodiment, these first lens 71 are by outwardly-bent predetermined arc on the mediad, formation one and the minimum point-symmetric shape of central authorities.The bottom shape of these second lens 81 is corresponding to the shape of these first lens, 71 end faces, and these second lens 81 are to adhere on this first lens, 71 end faces with its bottom surface.

Take off first embodiment before the user mode of this second embodiment and the effect that can reach all generally are same as, hold and do not give unnecessary details.

Again, the fluorescent material 85 on these second lens 81 of this second embodiment, the mode that Fig. 2 to Fig. 4 took off of taking off first embodiment before its set-up mode can also be analogous to is provided with, and has the fluorescent material of utilization 85 equally and makes effect of uniform light.

As from the foregoing, the attainable effect of the present invention is:

One, light is more even: see through the technology that the present invention takes off, the LED unit is sent out The light that goes out is through the effect of fluorescent material and more even, that is, the invention provides Outside the lens of LED unit itself, provide the mechanism of fluorescent material mixed light in the mode that adds, It is more even that light is able to. And this also can and then prevent from human eye is produced the problem of dazzle.

Two, can be applicable to illuminating engineering: because the present invention has the effect of the dazzle of preventing, therefore Can and then be applied on the illuminating engineering, the user does not have uncomfortable sensation in use.

Claims

1. the LED light-emitting device of a mixed through fluorescent substance is characterized in that including:

One substrate;

One led chip is located on this substrate;

One first lens be arranged on this substrate with its bottom, and this led chip are by this first lens institute cover cap; And

One second lens are positioned at this first lens top, and these second lens contain fluorescent material.

2. according to the LED light-emitting device of the described mixed through fluorescent substance of claim 1, it is characterized in that: these second lens and this first lens preset distance of being separated by.

3. according to the LED light-emitting device of the described mixed through fluorescent substance of claim 1, it is characterized in that: this first lens end face has predetermined section configuration, the bottom shape of these second lens is to shape that should the first lens end face, and these second lens are to adhere on this first lens end face with its bottom surface.

4. according to the LED light-emitting device of claim 2 or 3 described mixed through fluorescent substance, it is characterized in that: the fluorescent material on these second lens is laid in these second lens.

5. according to the LED light-emitting device of claim 2 or 3 described mixed through fluorescent substance, it is characterized in that: the fluorescent material on these second lens is coated with the end face of being located at these second lens.

6. according to the LED light-emitting device of claim 2 or 3 described mixed through fluorescent substance, it is characterized in that: the fluorescent material on these second lens is coated with the bottom surface of being located at these second lens.

7. according to the LED light-emitting device of claim 2 or 3 described mixed through fluorescent substance, it is characterized in that: the fluorescent material on these second lens is coated with end face and the bottom surface of being located at these second lens.

8. according to the LED light-emitting device of the described mixed through fluorescent substance of claim 1, it is characterized in that: these first lens are different with the refractive index of these second lens.