CN203489025U

CN203489025U - Stereoscopic LED light source

Info

Publication number: CN203489025U
Application number: CN201320441622.9U
Authority: CN
Inventors: 刘艳; 吴裕朝; 吴冠辰
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-23
Filing date: 2013-07-23
Publication date: 2014-03-19
Anticipated expiration: 2023-07-23

Abstract

The utility model relates to a stereoscopic LED light source, comprising a planar substrate and at least two LED luminous parts. The planar substrate is folded to become a hollow polyhedral cylinder. The LED luminous parts are separately packaged on outer surfaces of the polyhedral cylinder. At least one surface of the planar substrate is engraved to form a groove. The planar substrate is folded along the groove to become the polyhedral cylinder. Each LED luminous part comprises at least one LED chip which is packaged on the planar substrate in a flip-chip manner. The multiple LED chips are connected in series. The design of the stereoscopic LED light source of the utility model is quite simple and ingenious and greatly facilitates mass production, since the LED luminous parts are formed on the planar substrate which is folded to become the stereoscopic LED light source having a polyhedral cylindrical shape.

Description

Three-dimensional LED light source

Technical field

The utility model relates to LED(Light Emitting Diode, light emitting diode) field, relate in particular to a kind of three-dimensional LED light source.

Background technology

Growing along with LED lighting engineering, the application of LED in people's daily life is also more and more extensive, replaces gradually incandescent lamp bulb and fluorescent lamp source etc. and becomes topmost light-emitting component.

By a plurality of planar LEDs, form three-dimensional LED, not only can expand luminous angle, can also effectively improve luminous brightness.In the prior art, generally by being connected to, LED chip on three-dimensional substrate, forms three-dimensional LED light source.

For example, Chinese patent CN101718398A has recorded a kind of three-dimensional LED light source structure, by a plurality of LED chips are welded on, forms three-dimensional LED light source on solid type light source board.Wherein, described solid type light source board need to be adaptive with the miscellaneous part shape of described three-dimensional LED light source, and this has obviously increased the difficulty of Design of Luminaires.

Again for example, Chinese patent CN202074283U has also recorded the three-dimensional fitting structure of a kind of LED, by a plurality of LED chips are suitably configured in, forms three-dimensional LED light source on polylith pcb board.Wherein, a part of described polylith pcb board surrounds column by fixed head, and described column pcb board upper end is provided with by the cone that described in another part, polylith pcb board forms by fixed mount, and this has obviously increased the complexity that light fixture is produced.

Utility model content

technical problem

In view of this, the technical problems to be solved in the utility model is how to reduce design difficulty and the production complexity of three-dimensional LED light source as far as possible.

solution

In order to solve the problems of the technologies described above, according to embodiment of the present utility model, provide a kind of three-dimensional LED light source, comprising:

Planar substrates, it is bent into the multi-faceted column of hollow; And

At least two LED illuminating parts, it is arranged on respectively on an outer surface of described multi-faceted column.

For above-mentioned three-dimensional LED light source, in a kind of possible implementation, at least one surface of described planar substrates, be carved with groove, and described planar substrates is bent into described multi-faceted column along described groove.

For above-mentioned three-dimensional LED light source, in a kind of possible implementation, V-shaped, the trapezoidal or ladder V-arrangement of described groove.

For above-mentioned three-dimensional LED light source, in a kind of possible implementation, described in each, LED illuminating part comprises covering crystal type and is encapsulated at least one LED chip on described planar substrates, described in each, LED chip comprises positive electrode, negative electrode and the isolated area that along continuous straight runs is arranged in order, wherein said horizontal direction is the direction parallel with described planar substrates

The upright projection of described isolated area on described planar substrates be at described positive electrode and negative electrode between the upright projection on described planar substrates,

Center line and the described LED chip axis on described horizontal direction of described isolated area in described horizontal direction is overlapping, and

Described isolated area is no more than described LED chip at 1/3rd of the width of described horizontal direction at the width of described horizontal direction.

For above-mentioned three-dimensional LED light source, in a kind of possible implementation, a plurality of LED chips that are encapsulated in to cover crystal type on an outer surface of described multi-faceted column form a described LED illuminating part by being connected in series.

For above-mentioned three-dimensional LED light source, in a kind of possible implementation, on the inner surface of described multi-faceted column, be provided with external connection point, described external connection point is for the positive electrode of described LED illuminating part and negative electrode are connected to respectively to external connection, and described external connection can be connected to for the power supply to described three-dimensional LED light source power supply.

beneficial effect

Because LED illuminating part is formed on planar substrates, and by this planar substrates, be bent into the three-dimensional LED light source of multi-faceted column shape, ingenious according to the three-dimensional LED light source simplicity of design of the utility model embodiment, be highly susceptible to volume production.

According to below with reference to accompanying drawing to detailed description of illustrative embodiments, it is clear that further feature of the present utility model and aspect will become.

Accompanying drawing explanation

The accompanying drawing that is included in description and forms a part for description shows exemplary embodiment of the present utility model, feature and aspect together with description, and for explaining principle of the present utility model.

Fig. 1 illustrates according to the structural representation of the three-dimensional LED light source of the utility model one embodiment;

Fig. 2 illustrates the structural representation of the LED chip adopting according to the three-dimensional LED light source of another embodiment of the utility model;

Fig. 3 illustrates the structural representation of the LED illuminating part adopting according to the three-dimensional LED light source of another embodiment of the utility model;

Fig. 4 illustrates according to the LED illuminating part in the three-dimensional LED light source of the another embodiment of the utility model and the profile of planar substrates;

Fig. 5 a-Fig. 5 c illustrates respectively according to the structural representation of the three-dimensional LED light source that is carved with vee-cut of another embodiment of the utility model, planar substrates side view and planar substrates top view;

Fig. 6 a-Fig. 6 c illustrates respectively according to the planar substrates side view of the three-dimensional LED light source that is carved with trapezoidal groove of another embodiment of the utility model, planar substrates top view and structural representation;

Fig. 7 a-Fig. 7 c illustrates respectively according to the planar substrates side view of the three-dimensional LED light source that is carved with ladder vee-cut of another embodiment of the utility model, planar substrates top view and structural representation;

Fig. 8 illustrates the flow chart of manufacture method of the three-dimensional LED light source of the utility model one embodiment.

reference numerals list

100,500,600,700: three-dimensional LED light source; 110,510,610,710: planar substrates; 120,520,620,720: multi-faceted column; 130:LED illuminating part; 131, the electrode of 132:LED illuminating part; 140,150: the external connection point of three-dimensional LED light source; 20,20-1,20-2,20-3:LED chip; The positive electrode of 21:LED chip; The negative electrode of 22:LED chip; The isolated area of 23:LED chip; 530:V shape groove; 630: trapezoidal groove; 730: ladder vee-cut.

The specific embodiment

Below with reference to accompanying drawing, describe various exemplary embodiments of the present utility model, feature and aspect in detail.The identical same or analogous element of Reference numeral presentation function in accompanying drawing.Although the various aspects of embodiment shown in the drawings, unless otherwise indicated, needn't draw accompanying drawing in proportion.

Here special-purpose word " exemplary " means " as example, embodiment or illustrative ".Here as " exemplary " illustrated any embodiment, needn't be interpreted as being better than or being better than other embodiment.

In addition, in order better to illustrate, in the specific embodiment below, provided numerous details by the utility model.It will be appreciated by those skilled in the art that and there is no these details, the utility model can be implemented equally.In other example, the method for knowing for everybody, means, element and circuit are not described in detail, so that highlight purport of the present utility model.

embodiment 1

As shown in Figure 1, according to the three-dimensional LED light source 100 of the utility model one embodiment, comprise planar substrates 110 and at least two LED illuminating parts 130.Wherein, planar substrates 110 is bent into the multi-faceted column 120 of hollow, example three cylinders as shown in Figure 1.And LED illuminating part 130 is encapsulated on an outer surface of multi-faceted column 120 separately.For example, on each outer surface of the multi-faceted column shown in Fig. 1, be provided with LED illuminating part 130.Yet, this not necessarily, in fact, as long as the overall luminous intensity of LED illuminating part 130 can meet brightness demand, the number of LED illuminating part 130 can be less than the number of the outer surface of multi-faceted column completely.

Like this, because LED illuminating part 130 is formed on planar substrates 110, and be bent into multi-faceted column 120 shapes by this planar substrates 110, ingenious according to the three-dimensional LED light source simplicity of design of the utility model embodiment, be highly susceptible to volume production.And, due to multi-faceted column 120 hollows, contribute to the heat radiation of LED illuminating part 130, thereby can effectively extend the service life of three-dimensional LED light source 100.

In a kind of possible implementation, as shown in Figures 2 and 3, each LED illuminating part 130 comprises covering crystal type and is encapsulated at least one LED chip 20 on planar substrates 110, each LED chip 20 comprises the positive electrode 21 that along continuous straight runs is arranged in order, negative electrode 22 and isolated area 23, wherein said horizontal direction is the direction parallel with planar substrates 110, the upright projection of isolated area 23 on planar substrates 110 is at positive electrode 21 and negative electrode 22 between the upright projection on planar substrates 110, center line and LED chip 20 axis on described horizontal direction of isolated area 23 in described horizontal direction is overlapping, and isolated area 23 is no more than LED chip 20 at 1/3rd of the width of described horizontal direction at the width of described horizontal direction.

Particularly, as shown in Figure 2, the isolated area 23 of LED chip 20 is positioned at the centre of LED chip 20, is equivalent to the both sides, axis that positive electrode 21 and negative electrode 22 are symmetrically distributed in LED chip 20, and positive electrode 21 and negative electrode 22 width L1 in the horizontal direction roughly the same.For example: if the width L2 that the width L0 of LED chip 20 is 1mm, positive electrode 21 and negative electrode 22 width L1 is in the horizontal direction 0.3mm, isolated area 23 is 0.3mm, on planar substrates 110 during chip package LED chip 20, because positive electrode 21 and negative electrode 22 are symmetrically distributed in the both sides, axis of LED chip 20, therefore conducting metal can be coated in to the surperficial central area of positive electrode 21 and negative electrode 22 just as tin cream or elargol, and coated weight is moderate.This makes, in the die bond operation of chip package LED chip, when being heated to high temperature so that conducting metal when fusing, can not cause the surface of conducting metal any one in conductive pattern from positive electrode 21, negative electrode 22 and planar substrates 110 to be overflowed, thereby avoided short circuit between positive electrode 21 and negative electrode 22, effectively improved the yields of chip package LED chip.

In a kind of possible implementation, a plurality of LED chips 20 that are encapsulated in to cover crystal type on an outer surface of multi-faceted column 120 form a LED illuminating part 130 by being connected in series.

For example, as shown in Figure 3, LED illuminating part 130 can be composed in series by three LED chip 20-1,20-2 and 20-3, and can from the positive electrode of first LED chip 20-1 draw LED illuminating part 130 positive electrode, from the negative electrode of last LED chip 20-3, draw the negative electrode of LED illuminating part 130.

Again for example, in a kind of possible specific implementation, as shown in Figure 4, the positive electrode 131 of LED illuminating part 130 and negative electrode 132 can be by electrical contact with the external connection point 140,150 being arranged on the inner surface of multi-faceted column 120 through the conductive hole of planar substrates 110.Like this, external connection point 140,150 can be connected to respectively external connection by the positive electrode of LED illuminating part 130 131 and negative electrode 132, and external connection can be connected to for the power supply to described three-dimensional LED light source 100 power supplies.Like this, because the outer surface of the multiaspect main body 120 at LED illuminating part 130 places does not exist exposed conductive part, this three-dimensional LED light source 100 can effectively reduce the danger that user gets an electric shock.

It should be noted that, although Fig. 3 and Fig. 4 all illustrate a LED illuminating part 130, comprise three LED chips 20, yet those skilled in the art should be able to understand, the utility model is not limited to this.In fact, the number of the required integrated LED chip of each illuminating part 130, can set flexibly according to luminosity, actual product size etc. completely.

embodiment 2

Fig. 5 a is according to the structural representation of the three-dimensional LED light source 500 of another embodiment of the utility model.In Fig. 5 a, there is identical implication with label identical in Fig. 1.Be with difference embodiment illustrated in fig. 1, at least one surface of the planar substrates 510 shown in Fig. 5 in three-dimensional LED light source 500, be carved with groove 530, and planar substrates 510 is bent into multi-faceted column 520 along groove 530.In other words, the number of the outer surface of multi-faceted column 520 is determined by the number of groove 530.

Particularly, groove 530 can only not arrange the surface of LED illuminating part at planar substrates 510, the surface of LED illuminating part can be only set at planar substrates 510 yet, can be in the both side surface of planar substrates 510 yet.Groove 530 makes planar substrates 510 easier when being bent to form multi-faceted column 520.In addition, those skilled in the art should be able to understand, the number of groove 530, the degree of depth, position and/or shape all can need to set flexibly according to actual product.

For example, in a kind of possible implementation, as shown in Fig. 5 b and 5c, the both side surface of planar substrates 510 is all carved with vee-cut 530.Like this, by along groove 530 bending planar substrates 510, by the three-dimensional LED light source 500 forming as shown in Figure 5 a.

In the possible implementation of another kind, as shown in Fig. 6 a and 6b, the both side surface of planar substrates 610 is all carved with trapezoidal groove 630.Like this, by along groove 630 bending planar substrates 610, by the three-dimensional LED light source 600 forming as shown in Fig. 6 c.

In another possible implementation, as shown in Fig. 7 a and 7b, the both side surface of planar substrates 710 is all carved with ladder vee-cut 730.Like this, by along groove 730 bending planar substrates 710, by the three-dimensional LED light source 700 forming as shown in Figure 7 c.

The flow chart of manufacture method that Figure 8 shows that the three-dimensional LED light source of the utility model embodiment 2, particularly, in conjunction with Fig. 5 a～5c, Fig. 6 a～6c, Fig. 7 a～7c, the manufacture method of this three-dimensional LED light source can comprise the following steps:

S81, at least one surface of planar substrates, make groove.

S82, on the outer surface of planar substrates chip package LED chip, to form at least two LED illuminating parts.

S83, planar substrates is bent into the multi-faceted column of hollow along groove, to form final three-dimensional LED light source.

Wherein, for above-mentioned steps S81, in a kind of possible implementation, can, according to the width design needs to each outer surface of multi-faceted column, determine the position of each groove.For example, in the situation that each outer surface width of multi-faceted column is equal, can, as shown in Fig. 5 b, Fig. 6 b, Fig. 7 b, in the position that planar substrates 510,610,710 is all divided into N section (being illustrated as 3 sections), make groove.

It should be noted that, although the step S81 of take carries out front and has introduced according to the manufacture method of the three-dimensional LED light source of the utility model embodiment as example, but those skilled in the art should be able to understand, the execution sequence of step S81 and step S82 should be not limited to this, for example, can first perform step S82 completely, perform step S81 again.

In addition, in a kind of possible specific implementation, also can be before or after step S81, and before step S82, external connection point is set on the surface that LED illuminating part is not set of planar substrates, and described external connection point is for being connected to respectively the external connection that can be connected with power supply by the positive electrode of LED illuminating part to be formed and negative electrode.

In addition,, although usining three cylinder formula LED light sources has introduced the structure of three-dimensional LED light source and preparation method as above as example, it will be appreciated by those skilled in the art that the utility model should be not limited to this.The manufacture method of four sides cylinder LED light source, five cylinder formula LED light sources etc. is consistent with the manufacture method of described three cylinder formula LED light sources.

The above; it is only the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by the described protection domain with claim.

Claims

1. a three-dimensional LED light source, is characterized in that, comprising:

Planar substrates, it is bent into the multi-faceted column of hollow; And

At least two LED illuminating parts, it is arranged on respectively on an outer surface of described multi-faceted column, wherein,

On at least one surface of described planar substrates, be carved with groove, and described planar substrates is bent into described multi-faceted column along described groove.

2. three-dimensional LED light source according to claim 1, is characterized in that, V-shaped, the trapezoidal or ladder V-arrangement of described groove.

3. three-dimensional LED light source according to claim 1 and 2, it is characterized in that, described in each, LED illuminating part comprises covering crystal type and is encapsulated at least one LED chip on described planar substrates, described in each, LED chip comprises positive electrode, negative electrode and the isolated area that along continuous straight runs is arranged in order, wherein said horizontal direction is the direction parallel with described planar substrates

4. three-dimensional LED light source according to claim 3, is characterized in that, a plurality of LED chips that are encapsulated in to cover crystal type on an outer surface of described multi-faceted column form a described LED illuminating part by being connected in series.

5. three-dimensional LED light source according to claim 4, it is characterized in that, on the inner surface of described multi-faceted column, be provided with external connection point, described external connection point is for the positive electrode of described LED illuminating part and negative electrode are connected to respectively to external connection, and described external connection can be connected to for the power supply to described three-dimensional LED light source power supply.