CN202992710U

CN202992710U - Light-emitting diode (LED) illumination lamp

Info

Publication number: CN202992710U
Application number: CN2012205560650U
Authority: CN
Inventors: 罗海亮
Original assignee: Shaoxing Wen Jia Environmental Friendly Material Co Ltd
Current assignee: Shaoxing Wen Jia Environmental Friendly Material Co Ltd
Priority date: 2012-10-25
Filing date: 2012-10-25
Publication date: 2013-06-12
Anticipated expiration: 2022-10-25

Abstract

The utility model provides an LED illumination lamp applicable to the LED illumination field. The LED illumination lamp comprises a circuit board and a lamp shade covered on the circuit board. A plurality of LED chips are arranged on the circuit board and in the lamp shade, protection glue layers are arranged on the surfaces of the LED chips, and a fluorescent glue layer with uniform thickness is arranged on the inner surface of the lamp shade. According to the LED illumination lamp, the fluorescent glue layer is arranged on the inner surface of the lamp shade, so that the distribution of fluorescent powder is uniform, the thickness uniformity of the fluorescent glue layer can be controlled easily, and glaring and uneven light emitting colors and intensities are prevented; and for the plurality of the LED chips, the problem of poor consistency of white light cannot occur, so that the yield is high, the production efficiency is improved, and the cost is saved. Further, the fluorescent glue layer is far away from the LED chips, so that rapid radiating of the LED chips is facilitated, the fluorescent powder conversion efficiency is improved greatly, the light decay is reduced, the light emitting efficiency is improved, and the lamp service life is prolonged.

Description

A kind of LED lighting

Technical field

The utility model belongs to the LED lighting field, particularly a kind of LED lighting.

Background technology

LED has environmental protection, the life-span is long, energy-efficient, volume is little, response is fast, strong adaptability and the good characteristics of security, is widely used in various productions, sphere of life.the LED lamp is a kind of widely used lighting, with reference to accompanying drawing 1, tradition LED lamp generally includes a reflector 101, in reflector 101, LED light source is set, this LED light source adopts the form that applies fluorescent material 103 on the surface of LED chip 102 usually, and this traditional structure has many defectives, on the one hand, apply fluorescent material or be mixed with fluorescent colloid at chip surface, the uniformity of fluorescent material is wayward, easily cause the wavelength conversion uneven, make the photochromic coloured silk of outgoing and intensity inhomogeneous, easily cause dazzle and form hot spot, if have simultaneously a plurality of chips, on different chips, the uniformity of fluorescent material thickness is difficult to hold, also can cause the white light uniformity poor, affect yields, the substandard product that is eliminated has also caused the increase of cost.Prior art arranges the atomizing lampshade to play certain equal light action in the bright dipping side usually, and the light transmittance of the lampshade that still atomizes is relatively low, can cause again brightness of illumination to descend, and its resultant effect is unsatisfactory.On the other hand, chip is the direct heat source that produces heat, directly applies fluorescent material or fluorescent colloid at chip surface, certainly will cause the heat conduction bad, and then reduces the conversion efficiency of fluorescent material and accelerate light decay, affects light extraction efficiency and service life.

The utility model content

The purpose of this utility model is to provide a kind of LED lighting, be intended to solve traditional LED lamp emergent light inhomogeneous and due to the heat radiation the bad light decay problem that causes.

The utility model is to realize like this; a kind of LED lighting; comprise a wiring board; and cover in lampshade on described wiring board; in being provided with a plurality of LED chips on described wiring board and within described lampshade; the surface of each described LED chip is equipped with the protection glue-line, is provided with the fluorescent adhesive layer of even thickness at the inner surface of described lampshade.

As optimal technical scheme of the present utility model:

Described wiring board is strip, and a plurality of described LED chip is along the length direction word order of described wiring board.

The horizontal section of described lampshade is semicircle.

Described LED chip is blue-light LED chip, is provided with yellow fluorescent powder in described fluorescent adhesive layer.

The utility model arranges fluorescent adhesive layer at the inner surface of lampshade, the uniformity of the distribution of the fluorescent material in fluorescent adhesive layer and fluorescent adhesive layer thickness is more easy to control, compare with direct structure at chip surface coating fluorescent material, because the distribution of fluorescent material is more even, and then avoided the phenomenon of dazzle and bright dipping color and intensity inequality, situation for a plurality of LED chips, the poor problem of white light uniformity that causes due to different chip surface fluorescent material inequalities can not appear yet, therefore this light fixture yields is higher, has improved production efficiency and has saved cost;

In addition, fluorescent adhesive layer is conducive to the LED chip quick heat radiating away from LED chip, and then has improved greatly the transformation efficiency of fluorescent material, reduces light decay, improves light extraction efficiency, extends the service life of light fixture.

Description of drawings

Fig. 1 is the structural representation of LED lamp in prior art;

Fig. 2 is the structural representation of the utility model embodiment LED lighting;

Fig. 3 is the enlarged drawing of a-quadrant in Fig. 2;

Fig. 4 is the sectional view of the utility model embodiment LED lighting.

The specific embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.

Below in conjunction with specific embodiment, specific implementation of the present utility model is described in detail:

Fig. 2 shows the structural representation of the utility model embodiment LED lighting, and Fig. 3 shows the enlarged drawing of a-quadrant in Fig. 2, and Fig. 4 shows the sectional view of this LED lighting, for convenience of explanation, only shows the part relevant to the present embodiment.

With reference to figure 2 ~ 4; this LED lighting mainly comprises a wiring board 1; be provided with lampshade 2 on wiring board 1; consist of a housing that seals with wiring board 1, be provided with a plurality of LED chips 3 on wiring board 1 and within lampshade 2, be provided with protection glue-line 4 on the surface of LED chip 3; to prevent its oxidation deactivation; LED chip 3 is preferably disposed on the central authorities of wiring board 1, and then its centre of luminescence is positioned on the central shaft or the plane of symmetry of lampshade 2, guarantees the symmetry of lampshade 2 bright dippings.In addition, be provided with the fluorescent adhesive layer 5 of even thickness at the inner surface of lampshade 2, the illumination that LED chip 3 sends is mapped on fluorescent adhesive layer 5, excites fluorescent material wherein, makes its light that sends another kind of wavelength, and mixes with exciting light and then form white light.

Further with reference to figure 2, wiring board 1 can be specifically a kind of strip structure, and a plurality of LED chips 3 form a strip source preferably along the length direction word order of wiring board 1, lampshade 2 is long arch, and its horizontal section can be the arc of semicircle or non-semicircle.

This LED lighting arranges fluorescent adhesive layer 5 at the inner surface of lampshade 2, the uniformity of the fluorescent material distribution in fluorescent adhesive layer 5 and the thickness of fluorescent adhesive layer 5 is more easy to control, compare with direct structure at chip surface coating fluorescent material, because the distribution of fluorescent material is more even, and then avoided the phenomenon of dazzle and bright dipping color and intensity inequality, situation for a plurality of LED chips, the poor problem of white light uniformity that causes due to different chip surface fluorescent material inequalities can not appear yet, therefore this light fixture yields is higher, has improved production efficiency and has saved cost.In addition, fluorescent adhesive layer 5 is conducive to LED chip 3 quick heat radiatings away from LED chip 3, and then has improved greatly the transformation efficiency of fluorescent material, reduces light decay, improves light extraction efficiency, extends the service life of light fixture.

Further, fluorescent adhesive layer 5 is formed on the inner surface of lampshade 2 after specifically can evenly being mixed by silica gel and fluorescent material, the concentration of fluorescent material wherein can produce certain impact to the transformation efficiency of light wave, too low or the too high wavelength conversion that all can't carry out appropriateness of concentration, and then be difficult to obtain desirable white light, preferred as the present embodiment, the mass ratio of silica gel and fluorescent material can be 1:0.2 ± 0.05, avoid fluorescent material not enough or excessive, to obtain desirable white light.

Further, the LED chip 3 in the present embodiment is preferably blue-light LED chip, and fluorescent material is yellow fluorescent powder, and namely by blue-light excited and produce the fluorescent material of gold-tinted, this fluorescent material can mix the formation fluorescent colloid according to aforementioned proportion with silica gel.

In the present embodiment, the surface of wiring board 1 can have reflective membrane, and the light that is used for being mapped on wiring board 1 reflects to lampshade 2, to improve light utilization, increases brightness of illumination.

The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. LED lighting; it is characterized in that; comprise a wiring board; and cover in lampshade on described wiring board; in being provided with a plurality of LED chips on described wiring board and within described lampshade; the surface of each described LED chip is equipped with the protection glue-line, is provided with the fluorescent adhesive layer of even thickness at the inner surface of described lampshade.

2. LED lighting as claimed in claim 1, is characterized in that, described wiring board is strip, and a plurality of described LED chip is along the length direction word order of described wiring board.

3. LED lighting as claimed in claim 2, is characterized in that, the horizontal section of described lampshade is semicircle.

4. as claim 1,2 or 3 described LED lightings, it is characterized in that, described LED chip is blue-light LED chip, is provided with yellow fluorescent powder in described fluorescent adhesive layer.