CN201117677Y

CN201117677Y - White light luminous diode

Info

Publication number: CN201117677Y
Application number: CNU2007200815328U
Authority: CN
Inventors: 陈泽
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-18
Filing date: 2007-10-18
Publication date: 2008-09-17
Anticipated expiration: 2017-10-18

Abstract

The utility model relates to a white light LBD (white light LED). The white light LBD consists of an electrode bracket made by physical compound material, a transparent and euphotic shell, a blue light or a purple light diode chip, a chip o a bracket electrode. The utility model is characterized in that the blue light dispersion contains surface on the inner concave surface of the transparent and euphotic shell is coated with a phosphor powder coat which can lead the blue light or the purple light emitted by the blue light or the purple light diode chip to be complemented with the light emitted by the coat. When glass is adopted as the transparent shell and a glistening layer is arranged on the outer surface of an insulating isolating pearl, the defect that an epoxide resin is easy to be aging and nigrescent caused by the UV action can be overcome; simultaneously the emission efficiency of the light of the chip is increased; as the manufacture technique process is simplified, the sealing manufacture cost of the white light LED can be reduced greatly.

Description

White light emitting diode

Technical field:

The utility model relates to a kind of light-emitting diode (LED), especially a kind of light-emitting diode that emits white light.

Background technology:

The white light emitting diode (LED) that existing blue streak or purple light are transformed into white light is by the entity epoxy package, and blue look of LED or purple light chip, supporting light-emitting diode chip for backlight unit are also connected electrode suppor, chip and the support connecting line of two electrodes and are coated in Lan Se or purple light chip light ejecting end and the fluorescence variable color powder coating that covers chip are formed by epoxyresin insulator.Transparent light transmitting shell of entity and led support and other devices are carried out the embedding of no gap, do not have the light complementation formation white light that the gap covers chip, blue look that chip sends or purple light and fluorescence variable color powder are sent because fluorescence variable color powder coating is coated in chip light ejecting end.With regard to existing white light LEDs, improving constantly owing to chip power, luminous intensity constantly strengthens, the heat conduction and heat radiation problem of chip itself is very outstanding, add chip and do not had that the gap covers in the fluorescence variable color powder coating, outside heat dissipation channel is degenerated the heat radiation heat conduction condition of chip by obstruct, and after transparent outer cover adopts the epoxy resin embedding, under the overwhelming majority's outdoor service condition, be subjected to the easily aging blackout of ultraviolet irradiation (UV) effect to make white light LEDs owing to produce light decay, luminous intensity constantly weakens.(have data to show white light LEDs owing to the UV effect, light decay reaches 35% when using at 4000 hours) therefore, awaits above-mentioned white light LEDs is done further to improve.

Summary of the invention:

Order of the present utility model ground, be that the blue streak of present mainly employing or the white light emitting diode that purple light is transformed into white light are done structural improvement, provide and the essentially identical a kind of mature production technology of the production procedure of existing pea lamp, more can guarantee product quality, improve the new blue streak of chip cooling, heat conduction condition, the present product of the elimination defective that the epoxy resin housing easily wears out under the UV effect or the white light emitting diode that purple light is transformed into white light, the simplification by manufacturing process simultaneously reduces the production cost.

Blue streak of the present utility model or purple light are transformed into the white light emitting diode of white light, has hollow transparent light transmitting shell, the LED electrode suppor adopts the physics composite material, reflecting coating is set, chip and stent electrode connecting line and fluorescent material discoloration coating in the light-emitting diode negative pole boss pit that this support is manufactured.Blue look of described LED or purple light chip are included in the inner concave of transparent light transmitting shell fully, blue look of light-emitting diode or purple chip are installed in the electrode suppor negative pole boss pit, be connected on the positive pole and negative pole of physics composite material bracket by chip and the stent electrode connecting line both positive and negative polarity with chip in the light-emitting diode, the fluorescent material discoloration coating is coated on the concave surface of transparent light transmitting shell equably.

In the utility model, described transparent light transmitting shell adopts glass to make, and also can adopt the industrial chemicals of other transparent printing opacities to make.

Making of the present utility model, realize by following mode, earlier light-emitting diode physics composite electrode support is positioned on the special equipment, elargol is coated on equably in the boss pit of support, again with Zhuan Yong Clip tool with blue streak or purple light chip expand draw back crystal grain after, place the elargol surface of boss pit to implement the cloth crystalline substance crystal grain, on the solid brilliant routing device of special use, realize that two electrodes are connected (ultrasonic bonding) with the routing of support outer electrode on the chip, again hollow transparent insulation shell is placed on the special-purpose coating machine, the inner concave of hollow transparent light transmitting shell is contained blue streak that all blue looks or purple chip send or purple light partly to be coated with equably and to apply fluorescence variable color powder and oven dry, to realize the light-emitting diode electrode suppor and the transparent insulation housing of solid brilliant routing at last, implement automation assembling sealing-in by special equipment, thereby finish the making of white light emitting diode of the present invention.

In the utility model, described hollow transparent light transmitting shell can be a glass, but also can make of other transparent printing opacity chemical materials.Adopting the glass housing be the best, because of the anti-UV ability of glass is much better than other transparent light transmissive materials.

Compare with existing like product, the beneficial effects of the utility model are: fluorescence variable color powder coating since be coated transparent insulating enclosure inner concave partly, therefore, no longer there is not the radiating condition that gap containing blue streak or purple light chip have improved chip, reduce the thermal resistance of heat dissipation channel, make blue streak or purple light chip obtain prolonging in the following life-span of prerequisite of equal-wattage, luminous intensity is improved.If transparent light transmitting shell adopts glass to make again, and insulation spacer ball surface is provided with reflector layer inner chamber made vacuum state, and then the life-span of blue streak or purple light chip will improve, also enhancing thereupon of luminous intensity simultaneously.

Content of the present utility model further illustrates with the following Examples, but content of the present utility model is not limited only to the content that embodiment relates to.

Description of drawings:

Fig. 1 is the structure chart of white light emitting diode among the embodiment.

Embodiment:

As shown in Figure 1, white light emitting diode in the present embodiment is the LED electrode suppor of being made by the physics composite material: 1, the insulation spacer ball of band reflecting coating: 2, transparent light transmitting shell: 3, fluorescence variable color powder: 4, chip and stent electrode connecting line: 5, LED blue streak or purple light chip: 6, reflective heat conducting coating: 7, conductive silver glue: 8, described white light LEDs blue streak or purple light chip 6 are placed in the surface of conductive silver glue, and promptly blue streak or purple light chip are placed in the centre with the transparent insulating enclosure lens.Chip and support connecting line are connected to 1 by supersonic welding respectively, on the positive and negative terminals and chip both positive and negative polarity of LED physics composite electrode support, the insulation spacer ball 2 of band reflecting coating, play insulation and separate two outer electrodes lead-in wire, the reverse light of the directive that chip is sent reflexes to the light ejecting end simultaneously.The scattered light of transparent light transmitting shell 3 inner concave is partly contained fully by fluorescence variable color powder, i.e. orchid or the purple light that is sent by Lan Se or purple chip must pass that fluorescence variable color powder coating is complementary to become outwards scattering behind the white light.Be coated with hollow transparent light transmitting shell after the fluorescence variable color powder coating with concave surface, that covers that physics composite electrode support makes is equipped with blue streak or purple chip and implements on the white light LEDs semi-finished product that electrode connects, and implements just to have realized after fixing the manufacturing of white light LEDs product of the present invention.

In the present embodiment, the surface of boss pit is provided with reflective and heat conducting coating 7.In the present embodiment, above-mentioned transparent light transmitting shell 3 can be an epoxy package, and the insulation spacer ball of above-mentioned band reflecting coating is a bead.If transparent light transmitting shell 3 is made by glass, and insulation spacer ball 1, be coated with outward reflecting coating is set, the delivery efficiency that then further solves the light that sends at the easily aging defective of turning black of UV effect lower house and chip further improves, and uses out of doors and constitutes new embodiment thereby be more conducive to product.

Claims

1, a kind of white light LEDs, have physics composite electrode support, chip and stent electrode connecting line, transparent light transmitting shell, send out the led chip of blue streak or purple light, insulation spacer ball, the fluorescent material variable color powder coating of band reflecting coating, it is characterized in that: fluorescent material is uniformly coated on the inner concave of transparent light transmitting shell, and is included in the coating fully by blue streak or the purple light that Lan Se or purple LED chip send.

2, white light LEDs as claimed in claim 1 is characterized in that: described transparent light transmitting shell is a glass shell.

3, white light LEDs as claimed in claim 1 is characterized in that: described insulation spacer ball outer surface is provided with reflecting coating.