CN201796960U

CN201796960U - Light-emitting diode (LED) bracket capable of improving light-emitting efficiency and LED

Info

Publication number: CN201796960U
Application number: CN2010205315880U
Authority: CN
Inventors: 苏宏波; 孙平如; 邢其彬
Original assignee: Shenzhen Jufei Optoelectronics Co Ltd
Current assignee: Wuhu Jufei Photoelectric Technology Co Ltd
Priority date: 2010-09-16
Filing date: 2010-09-16
Publication date: 2011-04-13
Anticipated expiration: 2020-09-16

Abstract

The utility model discloses a light-emitting diode (LED) bracket capable of improving light-emitting efficiency and an LED. The LED bracket comprises a base and a pin, the upper part of the base is provided with a cavity used for accommodating an LED chip, the base comprises an end face in the length direction and a side face in the width direction, and the pin extends out of the end face of the base; the part of the pin extending out of the end face comprises a first extension part extending downwards in a bending way, a second extension part extending from the first extension part to the side face in a bending way and a third extension part extending upwards in a bending way from the second extension part; and the end face of the base is also provided with a groove used for embedding the first extension part. Since the end face of the LED bracket is provided with the groove, when the first extension part is embedded in the groove, the length of the light-emitting surface of the LED can be increased through increasing the length of the base or the cavity while the length of the whole LED bracket is determined, thereby significantly improving the light amount and the light-emitting efficiency of the LED.

Description

A kind of led support and LED that improves luminous efficiency

Technical field

The utility model relates to the LED field, relates in particular to a kind of led support and LED that improves luminous efficiency.

Background technology

A kind of be used to throw light on or the led support structure of demonstration backlight as shown in Figure 1, comprise pedestal 10 and on pedestal 10, stretch out, be used to draw the metal pins 20 of led chip electrode.With reference to the state before 20 bendings of pin among the figure 2, the profile of pedestal 10 is a rectangle, and its top has the cavity 13 that is used for ccontaining led chip, and pedestal 10 comprises two end faces 11 that are positioned at length direction, and two sides 12 that are positioned at Width.Pin 20 is after stretch out the side 12 of pedestal 10, and at first upwards bending is extended, and then extends to end face 11 bendings, and free end hard-pressed bale pad as LED on end face 11 of pin 20 is used, and pin 20 stretches out the part integral body of pedestal 10 and is close to pedestal 10 outer walls.This pin set-up mode is applicable to the led support that cavity is darker usually, can't be applicable to the led support that cavity is more shallow.

Another kind of led support structure bends preceding state with reference to pin among the figure 4 20 as shown in Figure 3, and the pin 20 of this led support is after the end face 11 of pedestal stretches out, and at first downward the bending extended, and follows to side 12 and bends extension, and the bending extension that makes progress at last is as pad.This pin set-up mode is applicable to the led support that cavity is more shallow usually, yet, under the certain situation of led support length, because pin 20 has certain thickness, the length that is difficult to length by increasing pedestal or cavity increases the exiting surface of LED, has limited amount of light and the luminous efficiency of LED to a certain extent.

The utility model content

The main technical problems to be solved in the utility model is that a kind of led support and LED of effective raising luminous efficiency is provided.

For solving the problems of the technologies described above, the utility model provides a kind of led support that improves luminous efficiency, comprise pedestal and pin, described pedestal top is provided with the cavity that is used for ccontaining led chip, described pedestal comprises the end face that is positioned at length direction, and the side that is positioned at Width, described pin stretches out from the end face of described pedestal, and the described pin part of stretching out end face comprises first extension that downward bending extends, second extension that extends to the bending of described side from described first extension and from described second extension the 3rd extension that extends of bending upwards; The end face of described pedestal also is provided with the groove that is used to set described first extension.

Preferably, the degree of depth of described groove is 1/3 to 2/3 of a pin thickness.

Further, described first extension bends downward vertically, and described second extension bends to described lateral vertical, the upwards vertical bending of described the 3rd extension.

The utility model has also been protected a kind of LED that improves external quantum efficiency, comprise led support and led chip, described led support comprises pedestal and pin, described pedestal top is provided with cavity, described led chip is arranged on described cavity bottom, described pedestal comprises the end face that is positioned at length direction, and the side that is positioned at Width, described pin stretches out from the end face of described pedestal, and the part that described pin stretches out end face comprises first extension that downward bending is extended, from second extension of described first extension to the bending extension of described side, and the 3rd extension that upwards bends extension from described second extension; The end face of described pedestal also is provided with the groove that is used to set described first extension.

Further, also fill fluorescent glue in the described cavity.

The beneficial effects of the utility model are: the utility model led support is provided with groove at end face, and after being embedded in first extension in the groove, under the certain situation of whole LED stent length, can increase the length of the light-emitting area of LED by the length that increases pedestal or cavity, therefore can enlarge markedly the amount of light of LED, improve the luminous efficiency of LED.

In some applications, compare with the led support that existing cavity is more shallow, the utility model led support can suitably increase the development length of first kink by groove, the bending technique of easier realization pin, and then can shorten the distance between the pad center and exiting surface in the more shallow led support of cavity, the LED of this led support can with compatible FPC (the flexible print circuit: flexible printed circuit), thereby save material cost that uses of the darker LED of cavity.

Description of drawings

Fig. 1 is a kind of existing led support front view;

Fig. 2 is a kind of cutaway view of existing led support;

Fig. 3 is another kind of existing led support front view;

Fig. 4 is the cutaway view of another kind of existing led support;

Fig. 5 is the led support front view of a kind of execution mode of the utility model;

Fig. 6 is the led support vertical view of a kind of execution mode of the utility model;

Fig. 7 is the led support cutaway view of a kind of execution mode of the utility model;

Fig. 8 is the led support stereogram of a kind of execution mode of the utility model.

Embodiment

In conjunction with the accompanying drawings the utility model is described in further detail below by embodiment.

Embodiment one:

Please refer to Fig. 5 and Fig. 6, the pin 20 that the led support of present embodiment comprises pedestal 10 and stretches out pedestal 10, pedestal 10 tops are provided with the cavity 13 that is used for ccontaining led chip, and pedestal 10 comprises two end faces 11 that are positioned at length direction, and two sides 12 that are positioned at Width.Pin 20 parts are positioned at pedestal 10 inside and are used to connect led chip, another part stretches out from the end face 12 of pedestal 10, and the part of stretching out end face 11 comprises first extension 21 of downward bending extension, making progress to second extension 22 of side 12 bending extensions and from second extension 22 from first extension 21 bends the 3rd extension 23 of extension.The 3rd extension 23 forms pads, is used for the LED integral solder at circuit board, and for the ease of welding, the 3rd extension 23 of two pins 20 all is positioned at the same side of pedestal 10.In the present embodiment, the part that pin 20 stretches out end face 11 is close to the outer wall of pedestal 10, also be provided with groove 14 (please refer to the state before pin 20 bendings among Fig. 7) on the end face 11, the part of first extension 21 or integral body are embedded in this groove 14, and are close to the bottom land and the cell wall of groove 14.

The led support of present embodiment is provided with groove 14 at end face 11, and first extension 21 is embedded in the groove 14, under the certain situation of whole LED stent length, can increase the length of the light-emitting area of LED by the length that suitably increases pedestal 10 or cavity 13, compare with common led support, the utility model led support increases the light-emitting area area of LED, can significantly improve amount of light and the luminous efficiency of LED.

In the present embodiment, the correspondence position of two end faces 11 of pedestal 10 all is provided with groove 14, and for two pins 20 that two end faces 11 from led support stretch out, its first extension 21 is embedded in and forms symmetrical structure in the corresponding groove 14.Preferably, the degree of depth of groove 14 is 1/3 to 2/3 of pin 20 thickness, and the degree of depth that groove 14 for example can be set is half of pin 20 thickness.

Further, in order to guarantee that the various piece that pin 20 stretches out end face 11 firmly, stably is fixed on the pedestal 20, pin 20 each bending places all are bending 90 degree, promptly first extension 21 bends downward vertically, second extension 22 is to the lateral vertical bending, and the upwards vertical bending of the 3rd extension 23.

Pin 20 set-up modes of present embodiment are applicable to the led support that cavity is more shallow, not only can improve the luminous efficiency of LED by the increase cavity length, and make pin 20 firm more and stable with combining of pedestal 10.In some applications, when for example LED being welded on FPC, in order to make same FPC can compatiblely use the led support of the dark Fig. 1-Fig. 2 of cavity and more shallow Fig. 3-Fig. 4 structure, save material cost, should shorten the distance between the pad center and exiting surface in the led support of the more shallow Fig. 3 of cavity-Fig. 4 structure as far as possible, promptly should make the place-centric of the 3rd extension 23 be positioned as close to exiting surface, be difficult to realize the bending technique of pin 20 for common led support, but for the utility model led support, can reach this purpose by the development length of suitable increase by first kink 21, the bending technique of pin 20 is also relatively easily realized.

Embodiment two:

As shown in Figure 8, the LED of present embodiment comprises led support and the led chip of embodiment one, and led chip is arranged on cavity 13 bottoms on the pedestal, also fills fluorescent glue 30 in the cavity 13, led chip when energising, fluorescence excitation glue 30 and make the exiting surface emission white light of LED.After the utility model LED improves supporting structure, can increase the area of exiting surface, therefore effectively improve the luminous efficiency of LED by the length of lengthening pedestal or cavity.

But multiple technologies fields such as the utility model LED extensive use and illumination, demonstration backlight.

Above content be in conjunction with concrete execution mode 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, all should be considered as belonging to protection range of the present utility model.

Claims

1. led support that improves luminous efficiency, comprise pedestal and pin, described pedestal top is provided with the cavity that is used for ccontaining led chip, described pedestal comprises the end face that is positioned at length direction, and the side that is positioned at Width, it is characterized in that, described pin stretches out from the end face of described pedestal, and the described pin part of stretching out end face comprises first extension that downward bending extends, second extension that extends to the bending of described side from described first extension and from described second extension the 3rd extension that extends of bending upwards; The end face of described pedestal also is provided with the groove that is used to set described first extension.

2. led support as claimed in claim 1 is characterized in that, the degree of depth of described groove is 1/3 to 2/3 of a pin thickness.

3. led support as claimed in claim 1 or 2 is characterized in that, described first extension bends downward vertically, and described second extension bends to described lateral vertical, the upwards vertical bending of described the 3rd extension.

4. LED who improves luminous efficiency, comprise led support and led chip, described led support comprises pedestal and pin, described pedestal top is provided with cavity, described led chip is arranged on described cavity bottom, described pedestal comprises the end face that is positioned at length direction, and the side that is positioned at Width, it is characterized in that, described pin stretches out from the end face of described pedestal, and the part that described pin stretches out end face comprises first extension that downward bending is extended, from second extension of described first extension to the bending extension of described side, and the 3rd extension that upwards bends extension from described second extension; The end face of described pedestal also is provided with the groove that is used to set described first extension.

5. LED as claimed in claim 4 is characterized in that, the degree of depth of described groove is 1/3 to 2/3 of a pin thickness.

6. LED as claimed in claim 4 is characterized in that, described first extension bends downward vertically, and described second extension bends to described lateral vertical, the upwards vertical bending of described the 3rd extension.

7. as each described LED in the claim 4 to 6, it is characterized in that, also fill fluorescent glue in the described cavity.