CN203176787U

CN203176787U - Led diode

Info

Publication number: CN203176787U
Application number: CN2013200376364U
Authority: CN
Inventors: 李中印; 雷浩; 吴彬; 唐嘉; 严加彬
Original assignee: JIANGSU HUACHENG OPTOELETRONIC TECHNOLOGY Co Ltd
Current assignee: JIANGSU HUACHENG OPTOELETRONIC TECHNOLOGY Co Ltd
Priority date: 2013-01-24
Filing date: 2013-01-24
Publication date: 2013-09-04
Anticipated expiration: 2023-01-24

Abstract

The utility model discloses an LED diode which has a good heat dissipation effect under the condition that no dark region is generated. The LED diode comprises a base, wherein two copper pieces are installed at the bottom of the base, a groove is formed in the base, one copper piece is formed at the bottom of the groove and is connected with 3-4 LED light sources in series, the two copper pieces are connected in series and located at the two ends of a series circuit, and the groove is filled with glue. The LED diode has the advantages that the 3-4 LED light sources are connected to the one copper piece in series, heat dissipation is achieved by means of good thermal conductivity of the copper pieces, the heat dissipation effect is good, and meanwhile cost of products can be lowered.

Description

The LED diode

Technical field

The utility model relates to a kind of LED diode.

Background technology

The LED white light emitting diode is to belong to energy-saving illumination light source of new generation, be to belong to solid-state light emitters, because it has efficiently, the distinguishing feature of energy-saving and environmental protection, by the general indoor and outdoor lighting that is applied to of light, display backlight, bulkhead lamp capable, Tunnel Lamp, lighting fields such as street lamp, along with its application of decline gradually of LED price is more wide, finally can generally be accepted by masses, become the lighting source in the 4th generation gradually.Because being the progression level, the development of LED white light emitting diode increases, the development and change of LED outward appearance at present all from the basis of initial appearance structure gradually improvement and come, cause the LED outward appearance of a great variety, power is also by more than the initial 0.06W high-power integrated 100W till now.LED fluorescent lamp (1.2 meters and 0.6 meter) beginning at present generally is used for replacing traditional fluorescent lamp, is optimizing so far though be used for forming the required LED diode configuration design of LED fluorescent lamp, but following shortcoming is arranged in actual production:

1, in order to reach the uniform hot spot effect of LED lamp, use lower-powered LED diode (as 3528 diodes), the quantity that increases the LED diode realizes, but whole diode price is higher.

2, in order to reduce the diode cost, adopt power middle power LED diode (as 3014 and 2835 diodes) bigger than normal to realize, because of the lamp power usage quantity that reduced bigger than normal, but (0.1～0.8W) diode face shaping is all based on square and circular diode for power at present, cause in the spacing between diode on the fixing length to become big, can produce certain influence to the hot spot effect of lamp, produce the dark space, if also can influence the efficient of power supply when being used for bulb lamp, increase the cost of power supply.

3, the LED major part of middle power all is the chip manufacturing of power in adopting, and middle power (0.1～0.8W) chip area mostly concentrates on 600～800um ², junction temperature of chip is more concentrated when operate as normal, and heat conduction and heat dispersion are required than higher, and product stability can reduce.

The utility model content

Technical problem to be solved in the utility model is: provide a kind of under the situation that does not produce the dark space, the good LED diode of radiating effect.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of LED diode, comprise pedestal, the bottom of pedestal is provided with two copper sheets, is provided with groove in the described pedestal, and one of them copper sheet forms the bottom of groove, be in series with 3～4 led light sources on this copper sheet, and two copper sheets also are cascaded, two copper sheets are positioned at the two ends of this series circuit, are full of transparent glue in the groove.

Described groove is divided into three layers from top to bottom, below one deck be mounting layer, the intermediate layer is luminescent layer, above one deck be the barrier layer.

Described led light source is arranged in mounting layer.

The cross section of described luminescent layer is trapezoidal, and the cross section on mounting layer and barrier layer is for trapezoidal.

The angle that fall between trapezoidal two waists in the cross section of described luminescent layer is 150 degree.

Distance between the adjacent LED light source is less than 10mm.

The long 7.5mm of described pedestal, wide 2mm.

The beneficial effects of the utility model are: 3～4 led light sources are connected on the copper sheet, utilize the thermal conductive resin of copper sheet, realize heat radiation, radiating effect is fine.

Description of drawings

Fig. 1 is the front view of the utility model LED diode;

Fig. 2 is the upward view of Fig. 1;

Fig. 3 is the combination figure of copper sheet and pedestal.

Among the figure: 1, pedestal, 2, left copper sheet, 3, right copper sheet, 4, led light source, 5, glue, 6, mounting layer, 7, luminescent layer, 8, the barrier layer.

The specific embodiment

Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.

As shown in Figure 1, LED diode described in the utility model, comprise pedestal 1, the bottom of pedestal 1 is provided with two copper sheets, and---left copper sheet 2 and right copper sheet 3---is shown in Figure 2, be provided with groove in the pedestal 1, one of them copper sheet (right copper sheet 3) forms the bottom of groove, be in series with 3～4 led light sources 4 on this copper sheet, and left copper sheet 2 and right copper sheet 3 also be cascaded form a series circuit, when reality is used, as long as with left copper sheet 2 and the right copper sheet 3 logical power supply of going up of both positive and negative polarity as diode, the LED diode will be luminous.A left side copper sheet 2 and right copper sheet 3 are positioned at the two ends of this series circuit, are full of transparent glue 5 in the groove, treat that glue 5 solidifies after, just the lead fixed between the led light source 4 can be lived, avoid the lead of fragility to receive tearing and break.

As shown in Figure 3, described groove is divided into three layers from top to bottom, below one deck be mounting layer 6, the intermediate layer is luminescent layer 7, above one deck be barrier layer 8.Described led light source 4 is arranged in mounting layer.In order to increase the light-emitting zone of led light source 4, the cross section of described luminescent layer is trapezoidal, and the angle between these trapezoidal two waists is 150 degree.The cross section on mounting layer and barrier layer is for trapezoidal.In order to reduce luminous dark space, the distance between the adjacent LED light source 4 is less than 10mm.If adopt long 7.5mm, the pedestal of wide 2mm, and above-mentioned led light source 4 employing low-power (0.1W is following), the LED diode of producing just can form a middle power (0.1～0.8W).

The utility model has the advantages that:

One, at 150 degree, light efficiency is higher by 3～5% than the LED diode of other types more greatly for its lighting angle;

Two, because being used for lighting time ratio, the very even event of itself hot spot effect is easier to solve the hot spot problem;

Two, because of it be the structure of strip, except being applicable to circular luminaires such as bulb lamp, also be specially adapted to the light fixture of strip, can reduce the usage quantity of lamp pearl, reduced the shared cost of lamp pearl in the lamp applications; Example: the fluorescent tube of 1.2 a meters/18W, if need 300 with 3528 lamp pearls, 3014 lamp pearls need 180, and 2835 lamp pearls need 120, and 7520 lamp pearls (the utility model LED diode) then only need 70.Reduced production cost.Wherein the lamp pearl is that those skilled in the art is to another address of LED diode.3528 refer to 3.5mm * 2.8mm, and other by that analogy.

Three, left on 9V～12 left sides because of 3～4 LEDs light sources series connection back light pearl driving voltage, single lamp pearl voltage is higher for the less light fixture of volume, thereby can adopt lamp pearl series connection seldom to reach the higher purpose of the series connection required driving voltage in back, the power supply design is relatively easy like this, and the power supply cost also can reduce;

Four, because this profile lamp pearl is strip, its fin (right copper sheet 3) also is strip, and the area of radiating area reaches 6 square millimeters, and 3014 lamp pearl area of dissipations of extensive use at present have only 1.3 square millimeters, and 2835 lamp pearl area of dissipations have only 4 square millimeters; 3～4 wafers are uniformly distributed in the surface, because of wafer power less, junction temperature during work is also lower, the led light source junction temperature also can be uniformly distributed on the entire heat dissipation sheet (right copper sheet 3), be not concentrated in certain of fin, heat conduction and the easier processing of heat radiation are so the light fixture of assembling is when work, heat is relatively low, and the stability of light fixture is greatly improved.

Stability when the utility model LED diode can promote the work of light fixture when using in a word also had greatly improved to life-span of light fixture, most importantly can reduce the cost of light fixture itself, made product more can allow the general population accept.

Claims

1.LED diode, comprise pedestal, the bottom of pedestal is provided with two copper sheets, it is characterized in that: be provided with groove in the described pedestal, one of them copper sheet forms the bottom of groove, is in series with 3～4 led light sources on this copper sheet, and two copper sheets also are cascaded, two copper sheets are positioned at the two ends of this series circuit, are full of transparent glue in the groove.

2. LED diode according to claim 1, it is characterized in that: described groove is divided into three layers from top to bottom, below one deck be mounting layer, the intermediate layer is luminescent layer, above one deck be the barrier layer.

3. LED diode according to claim 2, it is characterized in that: described led light source is arranged in mounting layer.

4. LED diode according to claim 2, it is characterized in that: the cross section of described luminescent layer is trapezoidal, and the cross section on mounting layer and barrier layer is for trapezoidal.

5. LED diode according to claim 4 is characterized in that: the angle that fall between trapezoidal two waists in the cross section of described luminescent layer is 150 degree.

6. LED diode according to claim 1, it is characterized in that: the distance between the adjacent LED light source is less than 10mm.

7. LED diode according to claim 1 is characterized in that: the long 7.5mm of described pedestal, wide 2mm.