CN101320774A

CN101320774A - Light emitting diode with good light radiation and color development

Info

Publication number: CN101320774A
Application number: CNA2008100993945A
Authority: CN
Inventors: 陆燮明; 陆耘; 陆岚; 陆渊
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-05
Filing date: 2008-05-05
Publication date: 2008-12-10
Anticipated expiration: 2028-05-05
Also published as: CN100533796C

Abstract

The invention belongs to chemical and electronic technical field. A plastically-packaged LED chip is a solid comprising a top as a single sided concave lens, a semi-transparent reflective layer, a top periphery as a single sided concave lens, a lateral periphery as taper and a small annular ditch, a bottom as a concave spherical reflective layer, covered red fluorescent layer of the reflective layer; the outer edge is composed of a concave spherical surface at the top and the top periphery, a cylindrical surface ad the lateral periphery; the inner edge is composed of a semispherical hole, a shallow circular ring on the semispherical hole as the lateral periphery; the top and the top periphery of the inner edge covered with the green reflective layer is the double sided shell of the concave lens. After the solid is sleeved in the shell for locking, the invention forms the light emitting diode with great light radiating development.

Description

The light-emitting diode that the divergence of beam colour developing is good

Technical field

The invention belongs to optics and electronic technology field.

Background technology

Volume is little owing to light-emitting diode (english abbreviation is LED), little power consumption, life-span are long, expection with its as epoch of lighting at hand.But at present, LED also fails to replace incandescent lamp, fluorescent lamp, electricity-saving lamp and enters illumination market.We are in implementing the high brightness LED lamp tool bulb of reflector layer " in establish " (patent No. ZL200620070108.9) process, the puzzlement of basic direction of the light that sent by led chip and color rendering difference, the light that the light fixture bulb of forming with existing white light LEDs sends resembles shot-light: bright under the lamp, black all around, the cold light source look, color rendering is poor, original cross-color of people and thing, and everybody does not welcome.Change the defective of existing LED light fixture bulb, must set about changing from LED itself.Have only its existing problem that solved, just can welcome the energy-conservation New Times of doing illumination with LED.

Summary of the invention

The purpose of this invention is to provide and a kind ofly be coated with the solid of the plastic packaging led chip of fluorescence coating and top, bottom forming by reflector layer outward and by being coated with the good light-emitting diode of the synthetic divergence of beam colour developing of housing cover that fluorescence coating is formed in the concavees lens by concavees lens.

The object of the present invention is achieved like this: the plastic packaging led chip by the top be the single face concavees lens and establish thereon around the semi-transparent semi-reflecting photosphere, top for single face concavees lens, side week be cone and be shaped on a small circle ring groove, bottom in its underpart be the concave spherical surface reflector layer, remove the solid that the equal coating Red fluorescence coating of this reflector layer is formed; Be concave spherical surface, side week to be the face of cylinder around outer cause top and the top, interior cause episphere hole, side week are the housing of double concave lens for cylindrical hole and around being shaped on a shallow dome ring composition top and top thereon, as use blue-light LED chip, then the housing inner edge is coated with the green fluorescence layer; As with a blue green light LED chip, housing just is not coated with fluorescence coating.The solid of plastic packaging led chip is inserted in housing, and shallow dome ring snaps in the small circle ring groove, the good light-emitting diode of divergence of beam colour developing.The led chip electrified light emitting, make the divergence of beam that sees through through semi-transparent semi-reflecting photosphere in solid top and single face concavees lens on every side, reflector layer upwards reflected and disperses bottom portions of light was reflexed to downwards by the semi-transparent semi-reflecting photosphere in top, further dispersed through the double concave lens of housing again.The three primary colors modulation of these light of dispersing, color rendering obviously improves.The good light-emitting diode of divergence of beam colour developing also can be without housing, with the case replacement of light fixture, bulb.

Owing to adopt such scheme, its characteristics and beneficial effect are: the principle of luminosity and the structure of 1.LED chip remain unchanged, only use the basic principle of optics, change the geometry of plastic packaging led chip solid, increase housing and plating, coating, make LED meet divergence of beam, the good lighting requirement of colour developing, saved the time and the funds of tackling key problem research and development, shortened the cycle that LED enters lighting field; 2. the technology of producing LED is constant, and utilizes ripe injection moulding, plates, is coated with technology and technology, and it is few that cost is increased, and product quality is also guaranteed.

Description of drawings

Fig. 1 is a structural principle cutaway view of the present invention.1. bottom reflector layers among the figure; 2.LED chip assembly; 3. solid; 4. housing; 5. semi-transparent semi-reflecting photosphere.

Embodiment

Describe embodiments of the invention in detail below in conjunction with accompanying drawing.

Among Fig. 1, led chip assembly (2) plastic packaging is being formed central authorities that verandah wire-wound axis revolution constitute transparent solid (3) with a skew lines and bottom with circular arc line with two circular arc lines, middle part by top, in the cone bottom system one of solid (3) perpendicular to the very shallow small circle ring groove of axis, establish the semi-transparent semi-reflecting photosphere of mesh (5) on the top single face concavees lens of solid (3), establish bottom reflector layer (1), the outer rim coating Red fluorescence coating of solid except that the bottom (3) on the concave spherical surface of solid (3) bottom.Form profile and constitute transparent top and be the housing of double concave lens (4) on every side around the axis revolution with the rectilinear(-al) internal profile with quarter turn line, bottom with the sideline, right angle with two circular arc lines and middle bottom by top by top, small circle ring groove position and the corresponding shallow dome ring of size on system one and solid (3) on the cylindrical hole of housing (4), as the led chip with energising back blue light-emitting, housing (4) inner edge is coated with the green fluorescence layer; As the led chip with the green glow that turns blue after the energising, housing (4) inner edge is not coated with fluorescence coating.Solid (3) is inserted in housing (4), shallow dome ring snap in the small circle ring groove the good light-emitting diode of divergence of beam colour developing.Led chip assembly (2) electrified light emitting, make the divergence of beam that sees through through the semi-transparent semi-reflecting photosphere (5) at solid (3) top and single face concavees lens on every side, partly light be reflected down to bottom reflector layer (1) more upwards reflection disperse, all see through light and reverberation is further dispersed through the double concave lens of housing (4) again, be hemispherical distribution and three primary colors modulation in led chip assembly (2) top, color rendering obviously improves.As assemble light fixture, bulb with it, also can be without housing (4), only with the solid (3) of plastic packaging led chip assembly (2), on the case geometry of light fixture, bulb and fluoresent coating, be correspondingly processed, reach the good purpose of divergence of beam colour developing equally.

Claims

1. the good Light-Emitting Diode of divergence of beam colour developing, the led chip assembly is arranged, it is characterized in that plastic packaging led chip assembly in addition be the top be the single face concavees lens and establish thereon around semi-transparent semi-reflecting photosphere, the top for single face concavees lens, side week for cone and to make a small circle ring groove, bottom thereon be the concave spherical surface reflector layer, remove the transparent solid that the equal coating Red fluorescence coating of this reflector layer is formed; Outer cause top and top are concave spherical surface, side week to be the face of cylinder on every side, and interior cause episphere hole, side week, solid was inserted in the housing engaging for cylindrical hole is also made a shallow dome ring thereon, inner edge is coated with the transparent shell that the green fluorescence layer is formed.

2. the good light-emitting diode of divergence of beam colour developing according to claim 1, it is characterized in that can be without housing, and the back alternative housings handles accordingly on the case of light fixture, bulb.