CN201884984U

CN201884984U - LED (light-emitting diode) light source structure

Info

Publication number: CN201884984U
Application number: CN2010205563791U
Authority: CN
Inventors: 游振贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-09
Filing date: 2010-10-09
Publication date: 2011-06-29
Anticipated expiration: 2020-10-09

Abstract

The utility model relates to an LED light source structure, which includes at least one LED and a diffuser, wherein the diffuser is arranged on a light emergence surface arranged on the LED, and includes a transparent body and a diffusion film; and the diffusion film is arranged on at least one side of the transparent body and includes a plurality of particles. The LED light source structure enhances the color rendering and provides high light emergence rate through the particles of the diffusion film.

Description

The led light source structure

Technical field

The utility model relates to a kind of light structures, and it refers to a kind of led light source structure especially.

Background technology

Illumination is the human civilization sign, and as basic necessities of life, head asks it should be enough again in the hope of its quality.Illumination is not enough, and luminosity is not enough, will influence operating efficiency and individual eyesight normal development, and harm is physically and mentally healthy.

Lighting source according to principle of luminosity be divided into that heat radiation is luminous, gas discharge is luminous, electroluminescent, semiconductor light emitting four big classes.The most commonly used with incandescent lamp/Halogen lamp LED, fluorescent lamp, compact fluorescent lamp, high-intensity discharge lamp in general illumination market.

After the industrial revolution of 18th century, a large amount of consumes energy of human beginning are to obtain a large amount of productions and industrialization product, also because industrialization centralized production cause, the mankind also begin to concentrate on city life in a large number in addition, make the city expanded range, population rolls up, and stimulates the illumination energy resource consumption.For example, the U.S. and Japan are that global main energy sources consumes state, and two countries' population only accounts for the whole world 7%, but consumes global 30% energy.

Illumination market is in large scale, and lighting energy accounts for the suitable important proportion of global energy consumption.Very do not have efficient but use at lighting energy at present, to make lighting energy consume increment rate, greater than whole energy resource consumption increment rate.For example, calendar year 2001 american commerce purposes illumination use is 3,910 hundred million kilowatt-hours of energy, wherein incandescent lamp has consumed wherein 32% energy, but only produces 8% exposure, then consumes remaining 68% energy than greater efficiency fluorescent lamp or HID, produce other 92% exposure (DOE, 2002).Consume increment rate in order to control lighting energy, the better light source of develop energy efficient will have very big help for solving the global energy shortage.

Light emitting diode (Light Emitting Diode; LED) be by the made luminescence component of semi-conducting material, assembly has two electrode terminals, applies voltage between terminal, feeds minimum electric current, dump energy can be excited with the form of light via the combination in electronics electricity hole and disengage.

In one's early years, light emitting diode is with the main application of indication light source, it is quite few to be applied to lighting field, only be applied to indicator lamp, or some special applications, as industrial lighting military, that isolate, and other occasion is (in these occasions, the light emitting diode reliability can reduce maintenance cost, and it is expensive to compensate led lighting).

But pass by over three, four years, because the light emitting diode manufacturing cost continues to reduce, and efficient and brightness improve constantly, cooperate long, safe, characteristics such as luminous efficiency is high (low-power), rich color, driving and regulation and control elasticity height, volume are little, environmental protection of life-span that light emitting diode has, make light emitting diode use and expanded significantly, drive its market demand and grow up in general illumination market.

The LED luminous efficiency presents growth significantly in recent years, with the required white light LEDs that throws light on is example, and the commercialization specification has reached 50lm/W, surmounts incandescent lamp bulb at present commonly used and Halogen lamp LED, Japanese trader Nichia becheduled for and will release the 100lm/W launch end of the year 2006, and its luminous efficiency is suitable with fluorescent lamp commonly used.And calculate that according to theory white light LEDs luminous efficiency maximum is 199lm/W, still have suitable much progress space future.

See also Fig. 1, be the structural representation of the led light source structure of prior art; As shown in the figure, light-source structure 10 is to comprise at least one LED12 and light diffusing sheet 14, this light diffusing sheet 14 is to see through ejaculation or hot pressing or extrusion modling, its thickness is generally 1～3mm, general light spreads 14 plates and is to use macromolecular material that plural light diffusion particle 142 is set, because the thickness of light diffusion 14 can cause the light extraction efficiency of light-source structure 10 to reduce, can see through the luminous efficacy that improves LED12, lumen value with the bright dipping that improves light-source structure 10, so, the energy-saving effect of light-source structure 10 will reduce, and at present the white light LEDs that uses all uses blue-ray LED to see through fluorescent material to make it send white light, its color rendering all seems lower with respect to present light source, add the red fluorescence branch or add red LED to improve its color rendering when encapsulation though have at present, right, its price of relativity is not striking.

The utility model people sees through above-mentioned shortcoming, proposes a kind of led light source structure to improve light extraction efficiency and color rendering.

Summary of the invention

Main purpose of the present utility model is to be to provide a kind of led light source structure, provides plural luminescence generated by light particle, to increase its color rendering.

Secondary objective of the present utility model is to be to provide a kind of led light source structure, provides a diffuser, so that high light-emitting rate to be provided.

To achieve the above object, the utility model is a kind of led light source structure, and it comprises:

At least one LED; And

One diffuser is the exiting surface that is arranged at this LED, and this diffuser comprises a printing opacity body and a diffusion barrier, and this diffusion barrier is at least one side that is arranged at this printing opacity body, and this diffusion barrier comprises plural particle.

In the utility model, wherein those particles are the light granule proliferation.

In the utility model, wherein those particles are for holding the light particle.

In the utility model, wherein those particles are the luminescence generated by light particle.

In the utility model, wherein those particles further comprise red light photoluminescence particle.

In the utility model, this printing opacity body printing opacity body that is high transmission rate wherein.

The utility model also discloses a kind of led light source structure simultaneously, and it comprises:

At least one LED; And

One diffuser is the exiting surface that is arranged at this LED, and this diffuser comprises a diffusion barrier, and this diffusion barrier comprises plural luminescence generated by light particle.

In the utility model, wherein those luminescence generated by light particles further comprise red light photoluminescence particle.

The beneficial effect that the utlity model has: a kind of led light source structure provided by the utility model, comprise an at least one LED and a diffuser, this diffuser can provide high light-emitting rate, and, red light photoluminescence particle further is set, to increase color rendering.

Description of drawings

Fig. 1 is the structural representation of the led light source structure of prior art;

Fig. 2 is the schematic diagram of the led light source structure of a preferred embodiment of the present utility model;

Fig. 3 is the schematic diagram of the led light source structure of a preferred embodiment of the present utility model;

Fig. 3 A is the schematic diagram of the particle of a preferred embodiment of the present utility model; And

Fig. 3 B is the schematic diagram of the particle of another preferred embodiment of the present utility model.

[figure number is to as directed]

10 light-source structures, 12 LED

14 light diffusing sheets, 142 smooth diffusion particles

20 light-source structures, 22 LED

24 diffusers, 242 printing opacity bodies

244 diffusion barriers, 26 particles

30 light-source structures, 32 LED

34 reflector plates, 36 LGPs

38 diffusion barriers, 40 particles

402 photic smooth particle 404 smooth granule proliferations

The specific embodiment

Further understand and understanding for making architectural feature of the present utility model and the effect reached had, cooperate detailed explanation, be described as follows in order to preferred embodiment and accompanying drawing:

See also Fig. 2, be the schematic diagram of the led light source structure of a preferred embodiment of the present utility model; As shown in the figure, the utility model provides a kind of led light source structure 20, is to comprise an at least one LED22 and a diffuser 24, and this diffuser 24 is to be arranged on the exiting surface of this LED22, the light guiding of directive property led light source is disperseed by this, to improve optical uniformity.

Moreover, this diffuser 24 is to comprise a printing opacity body 242 and a diffusion barrier 244, this diffusion barrier 244 is sides that are arranged at this printing opacity body 242, this printing opacity body 242 is to use the material of high penetration, for example: PMMA, PC etc., present embodiment is that an explanation is done in the outside that diffusion barrier 244 is arranged at this printing opacity body 242, patent right is not subject to the limits, because prior art is with printing opacity body and diffusion barrier unification, be that prior art is provided with the light diffusion particle in the printing opacity body, the thickness of general diffuser is 1～3mm, and this causes the light extraction efficiency of prior art to reduce, with 4 chi LED fluorescent tubes is example, the illumination of pressing close to fluorescent tube is 43000lux, uses the separation setting of this diffuser 24 of the present utility model, and being of uniform thickness is 1～3mm, its illumination is 53000lux, improve nearly 25% illumination, can improve its light extraction efficiency by this, maybe can see through and reduce wattage, to use the LED fluorescent tube of low wattage, to reach more environmental protection and energy-saving effect.

Again; this diffusion barrier 244 is to comprise plural particle 26; those particles 26 can be light granule proliferation or photic smooth particle or hold the light particle; and can see through mix or single use to be applied to different field; for example: can hold the light particle in red photic smooth particle of light granule proliferation adding or redness; to improve color rendering; more can design the photic smooth particle of single use or hold the light particle; to use as noctilucence; because photic smooth particle sees through the light of LED and excites; can make photic smooth particle carry out luminous; so led light source structure 20 can still can or be held the light particle and send light light after outage by photic smooth particle, with as the lighting use that leaves the space; wherein, light granule proliferation; photic smooth particle and the material that holds the light particle repeat no more for using the non-technical characterictic of the present utility model of prior art.

See also Fig. 3, be the schematic diagram of the led light source structure of another preferred embodiment of the present utility model; As shown in the figure, the utility model provides another kind of led light source structure 30, because diffusion barrier 38 is provided with plural particle 40, those particles 40 can be photic smooth particle 402 or light granule proliferation 404, the utility model is to be applied on the side-light type led light source structure 30 with its mix and match, it is to disclose at least one LED32, reflector plate 34, LGP 36 and diffusion barrier 38, sees also Fig. 3 A and in this diffusion barrier 38 photic smooth particle 402 can only be set; Or see also Fig. 3 B, photic smooth particle 402 of plural number and light granule proliferation 404 are set in this diffusion barrier 38, when the photic smooth particle 402 that is provided with can increase color rendering during for red photic smooth particle, or, the photic smooth particle 402 that is provided with is for can launch other coloured light, as night-light or other functionalized use.

In sum, it only is a preferred embodiment of the present utility model, be not to be used for limiting the scope that the utility model is implemented, all equalizations of doing according to the described shape of the utility model claim scope, structure, feature and spirit change and modify, and all should be included in the claim scope of the present utility model.

Claims

1. led light source structure is characterized in that it comprises:

At least one LED; And

2. led light source structure as claimed in claim 1 is characterized in that, wherein those particles are the light granule proliferation.

3. led light source structure as claimed in claim 1 is characterized in that, wherein those particles are for holding the light particle.

4. led light source structure as claimed in claim 1 is characterized in that, wherein those particles are the luminescence generated by light particle.

5. led light source structure as claimed in claim 1 is characterized in that, wherein those particles further comprise red light photoluminescence particle.

6. led light source structure as claimed in claim 1 is characterized in that, wherein this printing opacity body printing opacity body that is high transmission rate.

7. led light source structure is characterized in that it comprises:

At least one LED; And

8. led light source structure as claimed in claim 7 is characterized in that, wherein those luminescence generated by light particles further comprise red light photoluminescence particle.