CN2346075Y

CN2346075Y - Light-emitting diode

Info

Publication number: CN2346075Y
Application number: CN98248959U
Authority: CN
Inventors: 陈兴
Original assignee: Individual
Current assignee: QUANXING DEVELOPMENT SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 1998-11-09
Filing date: 1998-11-09
Publication date: 1999-10-27
Anticipated expiration: 2008-11-09

Abstract

The utility model relates to a light-emitting diode which can emit light toward circumference. Previously utilized lamp type light-emitting diodes can emit light from a front end, light can not be emitted from circumference, and light can be emitted from side parts when needed via changing the shape of the sealant of the light-emitting diodes with complex and multiple styles and no economy. The light-emitting diode of the utility model is directly added with small glass beads on the sealant in order to emit light from the side parts via the difference of the light refraction of the small glass beads and resin as the sealant, and the utility model can be used for Christmas light strings or the third braking lamps of vehicles and other purposes.

Description

Light-emitting diode

The utility model provides a kind of " light-emitting diode ", be meant especially a kind of can luminous from the side light-emitting diode.

The light that general light-emitting diode (LED) is sent all is positive front end emission type, is also referred to as lamp type (Lamp), because of its front end has semi-circular lens and V-type pedestal (tool light reflection function); The light that sends can influence luminous angle because of the depth of V-type pedestal and the size of lens, is that light is emitted from the side but no matter how to change.

Have the people that LED is contained in the sage recently and prolong on the lamp string and use, expectation can replace existing glass Christmas bulb, is low-voltage driving because of LED has its advantage, does not generate heat, and is difficult for the broken advantage of glass, can be used for outdoor fail safe and steeps good than luminaria.But existing LED also has its shortcoming, is exactly that light only can be launched forward, can't resemble conventional bulb and launch light to the four sides.The people in the industry is in order to change these shortcomings, thereby the employing method is to add coloured dyestuff 3 (as shown in Figure 1) in sealing resin 5, its sealing resin 5 just adds orchil 3 when with red LED luminescent wafer 1, and its sealing resin 5 just adds green colouring material 3 during with green LED luminescent wafer 1; So when LED is luminous, then can produce the deviation of light when running into coloured dyestuff 3, therefore can make light part can from around also see, but most light still in the past end-fire go out: this kind adds dyestuff 3, and its shortcoming is arranged is that dyestuff 3 can lower brightness and will make the luminous efficiency variation.

Another kind method do not add dyestuff also can make light from around shoot out, its method is for to make change in the shape of light-emitting diode sealing fat, as be designed to brilliant, polygonal or design around that concavo-convex point is arranged, or the wire lines all can be effective, but its shortcoming is complex-shaped, mold design difficulty height, because lamp type LED encapsulation is to adopt the encapsulating mode, so for the shape of complexity will be to be difficult to the demoulding, in addition the kenel kind changes a lot, and the disappearance that increases the weight of cost is arranged.

The utility model " light-emitting diode " for make luminous energy to around luminous institute employing method with above-mentioned different, not only do not change original shape, the while do not add dyestuff yet, the brightness that more can not reduce light is the purpose of this utility model.Promptly be in the sealing tree of light-emitting diode, to add little bead (as shown in Figure 2), little bead is distributed in the sealing fat equably, because the refractive index of little bead is different with the sealing resin, therefore run into little bead because of the relation of refract light and the effect of many little beades when emission light, light is emitted around LED.

Little bead adopts solid sphere or hollow ball all can implement, and bead also can be selected coloured spheroid for use certainly.

Be exactly to place many little beades in the reflecting material of highway center drawing lines or the reflecting material such as the 3M company product of higher brightness now, utilize the refraction and the focusing function of little glass, can make reverberation feel bright especially on its surface.

Shown in Japanese patent laid-open 8-162676 number, its sealing resin front end in LED is placed with the vitreum that stains in addition, and purpose is to improve character such as the photochromic of LED and raising weather resisteant.

The utility model light-emitting diode utilizes little bead to make an addition to make in the sealing resin even distribution, the light that its LED sent from around watch sensation that special result is also arranged, general LED then can't from around watch can only be from the just preceding auspicious ejaculation that obtains light of watching.

The purpose of this utility model is to provide a kind of light-emitting diode, and it can make the light that sends send around light-emitting diode.

A kind of light-emitting diode of the utility model, formed by electrode suppor, luminescent wafer and sealing resin, wherein, mixed many little transparent balls in the sealing resin, luminescent wafer is positioned in the electrode suppor groove, and to contain the sealing resin-encapsulated moulding of little transparent ball; Wherein can mix the little transparent ball with color in the sealing resin, the coloured light that color and luminescent wafer sent of coloured little transparent ball is homochromy; Wherein the sealing resin is for containing color and mixing many little transparent balls, and the coloured light that this sealing color of resin must be sent with luminescent wafer is homochromy; The little transparent ball that includes at the sealing resin can be solid or hollow body; Be earlier with the sealing resin with after little transparent ball mixes, be packaged into the light-emitting diode form of reduced size again with luminescent wafer and electrode suppor, after become the light emitting diode construction of large-size again with the sealing resin-encapsulated; Be earlier with the full position of sealing resin sealing 1/3-1/2, wait done after, become lamp type light emitting diode construction to be mixed with spherular sealing resin-encapsulated again; Be the light-emitting diode form that earlier sealing resin and luminescent wafer and electrode suppor is packaged into reduced size, after become the light emitting diode construction of large-size again with the sealing resin-encapsulated that is mixed with transparent ball.

Now cooperate to illustrate, with regard to the conformation function of the utility model light-emitting diode embodiment and feature thereof do describe in detail as after, please consult:

Fig. 1 is the led configurations that light-emitting diode adds dyestuff in the known sealing resin;

Fig. 2 is the utility model light-emitting diode adds transparent ball in sealing a led configurations;

Fig. 3 is the structure chart of the utility model LED package;

Fig. 4 is another example structure of the utility model LED package figure; And

Fig. 5 is the utility model LED package example structure figure again.

Embodiment one, please consult shown in Figure 2, for the utility model light-emitting diode adds many little transparent balls 4 (as bead) in sealing resin 5, when luminescent wafer 1 in the V-type groove of electrode suppor 2 through electrode 21 electrified light emittings, the light that luminescent wafer 1 is sent all sends light through the surface reflection of V-type groove toward the front, transmission through sealing resin 5, light can be run into transparent ball 4, because the effect of transparent ball 4 can make anaclasis, refraction action by many little transparent balls 4, the result can make light penetrate from all quarter, so can reach in the shape that does not change LED to make multidirectional the shedding of light generation be characteristics of the present utility model.Transparent ball 4 can be solid sphere or hollow ball in the present embodiment.

Embodiment two, transparent ball 4 in Fig. 2 can be used coloured little transparent ball instead, the color of the color of little transparent ball and LED luminescent wafer 1 light that sends is homochromy, and sealing resin 5 is selected transparent resin for use, and the light that sends like this can emit around the light equally.

Embodiment three, transparent ball 4 is constant in Fig. 2, and the sealing resin 5 of LED can be selected in addition coloured colouring resin for use, and wherein the luminous color of the color of sealing resin 5 and LED luminescent wafer 1 is homochromy, so also can make light from around penetrate but its effect is not so good as embodiment one and embodiment two.

The little spherosome of transparent polymer that comprises clear glass and heatproof at the transparent ball 4 of embodiment indication.

By Fig. 2 embodiment one method, if little transparent ball 4 adopts solid little bead, because the weight of little bead is heavier, therefore when sealing, mix and pour in the led die with the sealing resin 5 of liquid state, little bead can slowly not sink to concentrating on the top when sealing resin 5 is dried, and forms the luminance nonuniformity phenomenon; Can adopt the strong and very fast sealing resin of doing 5 of toughness to improve for improving this kind method.

Another kind method also can be improved, be the utility model the 4th embodiment, please consult shown in Figure 3, Fig. 3 mixes little transparent ball 4 earlier with sealing resin 5, and the light-emitting diode that is packaged into reduced size with luminescent wafer 1 and support 2 encapsulatings as after, use the large-size die package again, pour into single sealing resin 5 (not mixed transparent spheroid) again, the designed light-emitting diode of structure like this, the light that it sent can be to emission uniformly all around.

Fig. 4 is the utility model light-emitting diode, make luminous energy from the luminous another kind of manner of packing in four sides, be the utility model the 5th embodiment, its manufacture method is for being about the full position of front end half cambered surface of LED prior to (first) sealing resin 5 its amounts of irritating a little in the led die, as shown in Figure 4, after having done Deng (first) sealing resin 5, fill up the integral LED die cavity with (second) sealing resin 5 encapsulation that contain little transparent ball 4 again, little transparent ball 4 can slowly sink to the bottom of (second) sealing resin 5 during owing to heat, the result just makes little transparent ball 4 be positioned at the central authorities of LED, so when LED luminescent wafer 1 is luminous, can produce many luminous points at the little transparent ball 4 of LED central authorities and make light from around scatter out.

Fig. 5 is the utility model light-emitting diode, make luminous energy from another luminous manner of packing of four sides, be the utility model the 6th embodiment, after its manufacture method is the light-emitting diode of elder generation with luminescent wafer 1 and support 2 perfusion sealing resins 5 encapsulated moulding reduced sizes, use the die package of large-size again, pour into the sealing resin 5 that mixes little transparent ball 4 again, the designed light-emitting diode of structure like this, the light that it sent also can be to emissions uniformly all around.

The utility model and Japanese patent laid-open 8-162676 (Ri Ya chemical company) main difference is compared as follows:

1. purpose difference, the utility model purpose make luminous energy from around emit, Japan Patent then makes light launch forward, purpose is done the revisal of colourity.

2. structure difference, the little transparent ball of the utility model for make luminous energy uniformly from around emit, therefore the distribution of little transparent ball should be tried one's best and is distributed in uniformly in the LED sealing resin.Japan Patent then uses the spherula that stains to concentrate on the front end of LED sealing resin.

Specifying of comprehensive the foregoing description, light-emitting diode of the present utility model uses the little transparent body to be blended in the LED sealing resin, utilize adhesive material different with the optical index of little transparent ball and obtain making light from around emit, be characteristic point of the present utility model.This product can be used for devices such as Christmans light string or the 3rd stop lamp, has practical value deeply, and meets the patent application important document, files an application in the whence in accordance with the law, and imploring your juror checks and approves this part utility model application case, to encourage creation to feeling moral just.

Claims

1. a light-emitting diode is made up of electrode suppor, luminescent wafer and sealing resin, it is characterized in that,

Wherein, mix many little transparent balls in the sealing resin, luminescent wafer is positioned in the electrode suppor groove, and to contain the sealing resin-encapsulated moulding of little transparent ball.

2. light-emitting diode as claimed in claim 1 is characterized in that, wherein can mix the little transparent ball with color in the sealing resin, and the coloured light that color and luminescent wafer sent of coloured little transparent ball is homochromy.

3. light-emitting diode as claimed in claim 1 is characterized in that, wherein the sealing resin is for containing color and mixing many little transparent balls, and the coloured light that this sealing color of resin must be sent with luminescent wafer is homochromy.

4. light-emitting diode as claimed in claim 1 is characterized in that, the little transparent ball that includes at the sealing resin can be solid or hollow body.

5. light-emitting diode as claimed in claim 1, it is characterized in that, be earlier with the sealing resin with after little transparent ball mixes, be packaged into the light-emitting diode form of reduced size again with luminescent wafer and electrode suppor, after become the light emitting diode construction of large-size again with the sealing resin-encapsulated.

6. light-emitting diode as claimed in claim 1 is characterized in that, is earlier with the full position of sealing resin sealing 1/3-1/2, wait done after, become lamp type light emitting diode construction to be mixed with spherular sealing resin-encapsulated again.

7. light-emitting diode as claimed in claim 1, it is characterized in that, be the light-emitting diode form that earlier sealing resin and luminescent wafer and electrode suppor is packaged into reduced size, after become the light emitting diode construction of large-size again with the sealing resin-encapsulated that is mixed with transparent ball.