CN201081168Y

CN201081168Y - Light emitting diode

Info

Publication number: CN201081168Y
Application number: CNU200720122218XU
Authority: CN
Inventors: 顾连英
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2007-08-10
Filing date: 2007-08-10
Publication date: 2008-07-02
Anticipated expiration: 2017-08-10

Abstract

The utility model discloses an LED( light emitting diode), comprising a base (1), a pipe shell (2) arranged on the outside of the base (1), a colloid (3) arranged on the upper part of the base (1), a chip (4) arranged on the base (1) between the substrate (1) and the colloid (3), one or both of the substrate and the colloid are clasped to the colloid (3). The utility model has the advantages that: through the structure that the colloid and the pipe shell are clasped to the base, all parts of the LED are combined together tightly to avoid the falling off of the base or the colloid and to improve the reliability of the LED; further more, through coating the surface of the notch on the top of the base, the brightness of the LED is increased and the heat dispersion is improved as well; besides, through changing the shape of the colloid, the exit angle of the light rays through the colloid can be changed, thereby satisfying certain requirements of the exit angle of the light rays in special situations.

Description

A kind of light emitting diode

Technical field

The utility model relates to a kind of light emitting diode (Light Emitting Diode is called for short LED).

Background technology

LED is as a kind of illuminating source, have the life-span long, volume is little, caloric value is low, power consumption is few, reaction speed is fast, advantage such as radiationless, be widely used in the products such as indicator lamp, advertisement plate, traffic lights, automobile lamp, display pannel, communication tool.

Along with succeeding in developing of high brightness LED chip, LED just develops to high-power direction from small-power, and its caloric value also increases.Each part of existing LED normally interconnects by adhesive, and the heat that LED when work produces makes bonding effect reduce easily, makes between the each several part insecurely, also can occur phenomenons such as pedestal comes off or colloid comes off sometimes.

Summary of the invention

Technical problem underlying to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of well-set light emitting diode is provided.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of light emitting diode, comprise pedestal, at the shell in the pedestal outside, at the colloid on pedestal top, between described pedestal and colloid and be installed in chip on the pedestal, one of described pedestal and shell or two engage with described gel phase.

Described light emitting diode is provided with a cavity in the described shell, described shell is socketed in the top of described pedestal by described cavity.

Described light emitting diode, described colloid are provided with first recess or the 3rd protuberance; The top of described pedestal is provided with first protuberance that fastens with described first recess or the 3rd recess that fastens with described the 3rd protuberance.

Described light emitting diode, described colloid are provided with second recess or the 4th protuberance, and described shell is provided with second protuberance that fastens with described second recess or the 4th recess that fastens with described the 4th protuberance.

Described light emitting diode, embedding in the described shell has pin, the two ends of described pin to lay respectively at the inside and outside both sides of shell.

Described light emitting diode, the top of described pedestal are provided with the surface and are the recess of light face, and described chip is placed in the female portion.

Described light emitting diode, the surface of the female portion is coated with one deck reflectance coating.

Described light emitting diode, the cross section of the cavity of described shell and pedestal socket part is non-circular, and described pedestal and the cross section of the corresponding cylinder of described cavity are identical non-circular of the cross section with described cavity, and shell closely is enclosed within the outside of cylinder.Preferably, the circle that is shaped as of the cross section of described cavity lacks shape.

Described light emitting diode, described pedestal also comprises base, the described base formation inverted T-shaped that is connected with described cylinder, described shell is sheathed on the outside of described cylinder.

Described light emitting diode, described colloid comprise round platform part and hemisphere part, and the two is one-body molded.

The beneficial effects of the utility model are: the structure by adopting colloid and shell or pedestal to fasten, and make the each several part of LED combine tightly, phenomenons such as pedestal comes off or colloid comes off can not appear, improved the reliability of LED.Plate reflectance coating by recess surface, the light that reflexes to the recess surface can be reflected away, strengthened the luminosity of LED at the pedestal top; Simultaneously, by the conduction of heat of plated film, further improved the heat dispersion of LED.Be designed to non-circularly by cross section, can avoid pedestal in shell, to rotate, play positioning action preferably the cavity of shell and pedestal socket part.Shape by the design colloid can change by the rising angle behind the colloid, satisfies some in particular cases to the requirement of rising angle.In addition, described LED's is simple in structure, easy to assembly, has further improved production efficiency.

Description of drawings

Fig. 1 is the stereogram of LED in the specific embodiment;

Fig. 2 is the cutaway view of LED shown in Figure 1;

Fig. 3 is the stereogram of the shell of LED shown in Figure 1;

Fig. 4 is the cutaway view of shell shown in Figure 3;

Fig. 5 is the stereogram of the pedestal of LED shown in Figure 1;

Fig. 6 is the cutaway view of pedestal shown in Figure 5;

Fig. 7 is the encapsulating structure schematic diagram of the colloid of LED shown in Figure 1.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.

Embodiment one:

See also Fig. 1 to Fig. 7, described LED is a power-type LED, comprises pedestal 1, at the shell 2 in the pedestal outside, at the colloid 3 on pedestal top, between described pedestal 1 and colloid 3 and be installed in the chip 4 on the pedestal 1 and be embedded in gold thread 5 in the colloid 3.

Wherein, be provided with cross section lacks shape for circle column cavity 23 in the shell 2.Pedestal 1 is one-body molded by the good copper of heat dispersion, roughly is inverted T-shaped.The top of inverted T-shaped pedestal 1 is that cross section is the cylinder 13 that circle lacks shape, and the cavity 23 of shell 2 is enclosed within the outside of this cylinder 13; The top of pedestal 1 is provided with recess 11, and chip 4 is welded in the recess 11 by soldering or elargol, and the Surface Machining of recess 11 is the light face, and is coated with one deck reflectance coating on this light face.

Colloid 3 is that 1.55 epoxy encapsulation forms by refractive index, comprises round platform part and hemisphere part, and the two is one-body molded.Also be provided with first recess 31 and second recess 32 on the colloid 3; The top of described pedestal 1 is provided with first protuberance 12 that fastens with described first recess 31.The inboard of shell 2 is provided with second protuberance 22 that fastens with described second recess 32; Embedding in the shell 2 has pin 24, the two ends of pin 24 to lay respectively at the inside and outside both sides of shell 2; The leads ends that is positioned at the shell inboard links to each other with the both positive and negative polarity of chip 4 by the gold thread 5 that is embedded in colloid 3, and the leads ends that is positioned at shell 2 outsides is used for being connected with outer member.

Use above-mentioned LED, the energising back is tested as can be known, and the rising angle after light process colloid 3 reflected refractions that described chip 4 sends is 15 degree, can satisfy the demand of some low-angle application facet such as flashlight.

Embodiment two:

With the difference of embodiment one is that colloid 3 is different with the snap-in structure of pedestal 1 and shell 2, and colloid 3 is provided with the 3rd protuberance; Pedestal 1 is provided with the 3rd recess that fastens with described the 3rd protuberance.Colloid also is provided with the 4th protuberance on (3), and shell 2 is provided with the 4th recess that fastens with described the 4th protuberance.

Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, the cross section of the cavity that socket-connects such as the cylinder of described shell and pedestal also can be for except that segment shape non-circular, the material of pedestal can be elected the metal of high thermal conductivities such as aluminium, nickel, carbonization sial or aluminium nitride and nonmetal as; 15 degree that the rising angle of LED also is not limited to mention in the specific embodiment can be according to different needs, change the rising angle of LED by the shape that changes colloid 3, described deduction and replace and all should be considered as belonging to protection domain of the present utility model.

Claims

1. light emitting diode, comprise pedestal (1), be positioned at pedestal (1) outside shell (2), be positioned at pedestal (1) top colloid (3), be positioned between described pedestal (1) and the colloid (3) and be installed in chip (4) on the pedestal (1), it is characterized in that: described pedestal (1) and shell (2) both one of or two and described colloid (3) fasten.

2. light emitting diode according to claim 1 is characterized in that: be provided with a cavity (23) in the described shell (2), described shell (2) is socketed in the top of described pedestal (1) by described cavity (23).

3. light emitting diode according to claim 2 is characterized in that: described colloid (3) is provided with first recess (31) or the 3rd protuberance; The top of described pedestal (1) is provided with first protuberance (11) that fastens with described first recess (31) or the 3rd recess that fastens with described the 3rd protuberance.

4. light emitting diode according to claim 3, it is characterized in that: described colloid (3) is provided with second recess (32) or the 4th protuberance, and described shell (2) is provided with second protuberance (22) that fastens with described second recess (32) or the 4th recess that fastens with described the 4th protuberance.

5. light emitting diode according to claim 4 is characterized in that: embedding in the described shell (2) has pin (24), and the two ends of described pin (24) lay respectively at the inside and outside both sides of shell (2).

6. light emitting diode according to claim 5 is characterized in that: the top of described pedestal (1) is provided with the surface and is the recess (11) of light face, and described chip (4) is placed in the female portion (11).

7. light emitting diode according to claim 6 is characterized in that: the surface of the female portion (11) is coated with one deck reflectance coating.

8. light emitting diode according to claim 7 is characterized in that: described shell (2) lacks shape with the cross section of the cavity (23) of pedestal (1) socket part for circle; Described pedestal (1) is that cross section is the column structure that circle lacks shape with the corresponding cylinder of described cavity (23) (13).

9. light emitting diode according to claim 7 is characterized in that: described pedestal (1) also comprises base, the described base formation inverted T-shaped that is connected with described cylinder (13), and described shell (2) is sheathed on the outside of described cylinder (13).

10. according to the arbitrary described light emitting diode of claim 5 to 9, it is characterized in that: described colloid (3) comprises round platform part and hemisphere part, and the two is one-body molded.