CN203398154U

CN203398154U - LED lamp bead with high luminous efficiency and high color rendering performance

Info

Publication number: CN203398154U
Application number: CN201320418037.7U
Authority: CN
Inventors: 王珏越; 何刚; 朱明甫
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-11
Filing date: 2013-07-11
Publication date: 2014-01-15
Anticipated expiration: 2023-07-11

Abstract

The utility model relates to the technical field of LED light sources, in particular to an LED lamp bead with high light efficiency and high color rendering, comprising an LED chip (1) and a heat sink (2) and a bracket (3) below the LED chip (1). The bracket (3) is provided with two electrodes (4), the LED chip (1) is respectively connected to the two electrodes (4) through gold wires (6), and the LED chip (1) adopts a blue light chip, so The surface of the LED chip (1) is coated with a phosphor layer (7), and a light-transmitting film (8) is provided outside the phosphor layer (7), and the phosphor layer (7), light-transmitting film (8) ) are all convex arc-shaped structures; compared with the prior art, the utility model has a novel and simple structure, which not only greatly improves the light efficiency and color rendering index of LED lamp beads, makes the spectrum of white light more full, but also saves It saves electricity, further reduces carbon dioxide emissions, and is conducive to the control of environmental pollution.

Description

High light efficiency high-color development LED lamp pearl

[technical field]

The utility model relates to LED light source technical field, specifically a kind of high light efficiency high-color development LED lamp pearl.

[background technology]

At present, common LED lamp pearl is to adopt blue chip to excite yellow fluorescent powder to produce the technology of white light substantially, and its light efficiency and color rendering index are all lower, and the about 120lm/W of light efficiency develops the color approximately 70.And along with the fast development of lighting technology, LED illumination series products has occupied the very large market share, in country, conduct vigorous propaganda and promote under the prerequisite of energy-conservation, efficient illuminating product, a lot of enterprises respond one after another country and call and make great efforts the LED illuminating product that research and development energy consumption is low, light efficiency is high.One of core parts of these LED illuminating products are LED lamp pearls, in order to improve luminous efficiency, the minimizing optical attenuation of LED lamp pearl, common way is that a plurality of LED lamp pearls are integrated in a light source module, yet not only light efficiency is low for this way, cost is high, and flexibility is poor, be difficult to meet the demand of market to single lamp pearl.

[utility model content]

The purpose of this utility model is exactly will solve above-mentioned deficiency and a kind of high light efficiency high-color development LED lamp pearl is provided, light efficiency and the color rendering index of LED lamp pearl have not only significantly been promoted, the spectrum that makes to send white light is fuller, and saved electric energy, the discharge capacity that has further reduced carbon dioxide, is conducive to the control of environmental pollution.

Design for achieving the above object a kind of high light efficiency high-color development LED lamp pearl, heat sink 2, the support 3 that comprise LED chip 1 and LED chip 1 below, described support 3 is provided with two electrodes 4, described LED chip 1 is connected to respectively two electrodes 4 by gold thread 6, described LED chip 1 adopts blue chip, described LED chip 1 surface-coated has phosphor powder layer 7, outside described phosphor powder layer 7, is provided with light-transmissive film 8, and described phosphor powder layer 7, light-transmissive film 8 are the arcuate structure of evagination.

Described light-transmissive film 8 is red silica gel or lens.

Described phosphor powder layer 7 comprises green emitting phosphor, red fluorescence powder or orange fluorescent powder.

Described LED chip 1 is fixedly arranged on support 3 by bonded adhesives 5.

The utility model compared with the existing technology, novel structure, simple, reasonable in design, by adopting surface-coated to have the blue-light LED chip of phosphor powder layer, and outside phosphor powder layer, be provided with light-transmissive film, and phosphor powder layer and light-transmissive film are the arcuate structure of evagination, and this phosphor powder layer comprises green emitting phosphor, red fluorescence powder or orange fluorescent powder, thereby significantly promoted light efficiency and the color rendering index of LED lamp pearl, the spectrum that makes to send white light is fuller; In addition, high light efficiency means high-energy utilance, when extra 40% electric energy originally becomes thermal waste and falls, also because warming-up effect the performance of semiconductor device, and after light efficiency promotes 40%, more electric energy has become luminous energy, thereby saved electric energy, also just mean need to be still less thermal power plant, further reduced the discharge capacity of carbon dioxide, be conducive to the control of environmental pollution.

[accompanying drawing explanation]

Fig. 1 is structural representation of the present utility model;

In figure: 1, LED chip 2, heat sink 3, support 4, electrode 5, bonded adhesives 6, gold thread 7, phosphor powder layer 8, light-transmissive film.

[embodiment]

Below in conjunction with accompanying drawing, the utility model is done to following further illustrating:

As shown in drawings, the utility model comprises: heat sink 2, the support 3 of LED chip 1 and LED chip below, LED chip is fixedly arranged on support by bonded adhesives 5, support is provided with two electrodes 4, LED chip is connected to respectively two electrodes by gold thread 6, LED chip adopts blue chip, LED chip surface-coated has phosphor powder layer 7, phosphor powder layer comprises green emitting phosphor, red fluorescence powder or orange fluorescent powder, outside phosphor powder layer, be provided with light-transmissive film 8, light-transmissive film is red silica gel or lens, and phosphor powder layer, light-transmissive film are the arcuate structure of evagination.

Top type LED lamp pearly-lustre effect depends primarily on the working current density of LED chip performance, particularly LED chip, and within the specific limits, the light efficiency of LED lamp pearl increases along with reducing of current density.Common LED lamp pearl is generally by allowing the LED chip of certain size work under rated current, and under this current density, LED lamp pearl is about 120lm/W, as the LED chip operating current 20mA of 10*16.High light efficiency LED lamp pearl employing described in the utility model is chosen large scale LED chip and is worked lower than rated current in the situation that, as 23*45 chip 20mA, like this when meeting LED power requirement, significantly reduced the electric current of LED chip unit are, current density namely, thus the light efficiency of LED lamp pearl significantly promoted.The technology that this uses the little electric current of large chip, can promote light efficiency to 170lm/W; In fluorescent material, add green powder, rouge and powder or orange powder, can allow to send the spectrum of white light fuller, and promote color rendering index to 85.

The utility model is not subject to the restriction of above-mentioned execution mode; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection range of the present utility model.

Claims

1. A LED lamp bead with high light efficiency and high color rendering, characterized in that it includes an LED chip (1), a heat sink (2) and a bracket (3) under the LED chip (1), and the bracket (3) is equipped with There are two electrodes (4), the LED chip (1) is respectively connected to the two electrodes (4) through gold wires (6), the LED chip (1) adopts a blue light chip, and the surface of the LED chip (1) Coated with a phosphor layer (7), the phosphor layer (7) is provided with a light-transmitting film (8), and the phosphor layer (7) and the light-transmitting film (8) are both convex arcs shaped structure. the

2. The LED lamp bead with high light efficiency and high color rendering according to claim 1, characterized in that: the light-transmitting film (8) is red silica gel or a lens. the

3. The LED lamp bead with high luminous efficacy and high color rendering according to claim 1 or 2, characterized in that: the LED chip (1) is fixed on the bracket (3) by adhesive glue (5). the