CN102889478A

CN102889478A - LED (light-emitting diode) natural dodging lamp

Info

Publication number: CN102889478A
Application number: CN2011102055414A
Authority: CN
Inventors: 罗金荣; 牛晓芳; 胡雅蓉
Original assignee: Tianjin Siboke Technology Development Co Ltd
Current assignee: Tianjin Siboke Technology Development Co Ltd
Priority date: 2011-07-21
Filing date: 2011-07-21
Publication date: 2013-01-23

Abstract

The invention provides an LED (light-emitting diode) natural dodging lamp through which light emitted by the existing LED lamp is more uniform, thereby improving the light-emitting efficiency, keeping an appropriate color temperature and improving the CRI (color rendering index) transformation mode. The invention relates to the technical fields of LED lamp manufacturing, light-emitting material application and the like. Specifically, a high-color-temperature and high-luminous-efficacy LED which can not be applied to civil lighting is prepared into a lamp, and a lightproof hood coated or doped with fluorescent powder is added in front of the lamp so as to achieve the effects that the color temperature is reduced, the CRI is increased, and the light-emitting efficiency is higher than that of a similar low-color-temperature LED. The LED natural dodging lamp provided by the invention is technically characterized in that because the surface of the lightproof hood is coated or doped with slightly red fluorescent powder, red components in the whole lighting of the lamp are increased, so that a lighting effect close to natural light is achieved, and more importantly, the original similar point light-emitting lighting mode tends to a surface light-emitting mode. The LED natural dodging lamp subjected to transformation according to the invention can be fully applied to the field of life.

Description

The naturally even light modulation of LED

Technical field

The present invention relates to that LED is luminous, the technical fields such as LED light fixture manufacturing improvement, luminescent material and fluorescent material application, specifically be exactly by mode relatively easily the manufacture method that is not suitable on the market civilian LED light fixture to be improved.

Background technology

The LED lighting relies on the advantages such as its remarkable energy-saving and environmental protection, life-span length entering into a step by a step our daily life, and in some country the specification standards of formulating for the LED light fixture have been arranged, these all replace existing illumination in proof LED illumination invariably will be the best endeavors direction of following lighting field.But along with all the more good application of LED on lighting engineering, its some inferior positions that can't evade are at present also just hindering on the road of LED industry development, wherein the not high especially uneven illumination of the contradictory problems of LED light fixture colour temperature and luminous efficiency and colour rendering index is even be its at present can't large-scale application in the technical difficult points of room lighting, also be key problems-solving of the present invention.

Evolve to from animal in the middle of the mankind's the hundreds thousand of years very long processes, the mankind always are and are carrying out all productions and social activities under the natural daylight of living in the sun.The result of very long Natural Selection and Evolution is so that the reference color temperature that human eyes adapt to most is exactly the reference color temperature (5500-7500K) of sun nature white light.Human eyes are in this reference color temperature, and are the strongest to the identification capability of dynamic and static object; In this reference color temperature, the responsibility of human to external world things is also the quickest.Because the object video information that people's brain memory information bank the inside is stored mostly is to form under the irradiation of natural white light.So the reference color temperature of only LED lighting should be near the reference color temperature of sun nature white light, is only most scientific selection.At present the LED luminous efficiency of this colour temperature section is compared with existing light fixture product and is not had advantage, even also is in a disadvantageous position, and each large LED manufacturer of the whole world also solves this stubborn problem making great efforts to start with from the material of LED and package level.

When LED is made light fixture, many LED can be installed on the heat-radiating substrate, a plurality of LED are the luminous illuminating effect that plays simultaneously, but the light emission direction of LED itself is very strong, even adopt measures such as increasing LED quantity, placement lens, optimizing optical design, also can't eliminate the feature of its " point luminous ", this will make it can't be comparable with the gas luminescence light fixture of present use aspect uniformity of luminance.

Have some high color temperatures (more than the 9000K) product in the LED product, because its too external manifestation of " dazzling ", this series products major part all is applied to experiment or some special occasions, and can't be applied in the illumination of our daily life.If can will be a promotion to the LED industry with this part product rational Application in addition, have also created possible for LED accelerates to capture the life lighting field of light fittings simultaneously.

Summary of the invention

Utilize existing high light efficiency, high color temperature LED to make light fixture as luminescent device, front at light fixture covers the special light shield (glass or other transparent panel) of one deck, light shield applies the fluorescent material (also can mix) of the slightly biased redness of one deck in the forming process of light shield, make low colour temperature (3200-6500K) the LED light fixture that meets civilian requirement, have simultaneously the characteristics of high color rendering index (CRI) and uniformly light-emitting concurrently.

The technical scheme that technical solution problem of the present invention adopts is:

1. choose high light efficiency high color temperature LED as luminescent material.

2. according to specification requirement configuration fluorescent material, need in fluorescent material, add red fluorescent material in order to improve colour rendering, when reducing colour temperature, improving colour rendering, reach luminous efficiency and be higher than on the market existing equal low colour temperature LED light fixture.

3. we are mixed in the fluorescent material for preparing in the middle of the raw material of preparation dielectric material take glass or other transparent thin boards as dielectric material, perhaps are coated on the surface of this dielectric material, produce light shield.

4. light shield is installed on the front as for LED lamp luminescence direction, makes itself and light fixture itself close as a whole.

The invention has the beneficial effects as follows:

1. because single LEDs " the cold white light " that send, excited the fluorescent material on the light shield to realize that the conversion of light and secondary are luminous, its light characteristic makes illuminating effect softer, more even close to flat luminous.

2. increase the range of application of high color temperature LED product, effectively utilized its luminous efficiency to be higher than the advantage of low colour temperature LED product.

Description of drawings

1. Fig. 1 is LED light-emitting base schematic diagram, and plurality of LEDs requires to be welded on the base with heat sinking function according to power and heat radiation.

2. Fig. 2 mixes the even tabula rasa schematic diagram of fluorescent material, and fluorescent material mixes in forming process with the material of shadow shield, fuses in the shadow shield uniformly.This is one of manufacture method of even tabula rasa.

3. Fig. 3 is the even tabula rasa schematic diagram of face coat, and fluorescent material is the surface that is coated in uniformly shadow shield, and this is one of manufacture method of even tabula rasa.

4. Fig. 4 is the naturally even light modulation tool combination of LED schematic diagram,

The specific embodiment

1. choose high light efficiency high color temperature LED as luminescent material, be welded on the radiating bottom plate, make the base plate 1 in the accompanying drawing 4.

2. tabula rasa is spared in preparation: method 1 is that the fluorescent material that just prepares is coated on the shadow shield surface, makes the even tabula rasa shown in the accompanying drawing 3; Method two is that the fluorescent material that will prepare is mixed in the middle of the raw material of preparation shadow shield, is shaped together and makes the even tabula rasa shown in the accompanying drawing 2.

3. in the situation of light fixture profile and heat radiation permission, base plate shown in the accompanying drawing 41 and even tabula rasa 4 are assembled together.The original very strong light 3 of directionality of LED is converted to evenly soft nearly available light 5 by even tabula rasa 4.

More than one embodiment of the present of invention are had been described in detail, but described content only is preferred embodiment of the present invention, can not be considered to be used to limiting practical range of the present invention.All equalizations of doing according to the present patent application scope change and improve etc., all should still belong within the patent covering scope of the present invention.

Claims

1. one kind can make the LED lamp luminescence more even, keeps suitable colour temperature and improve the mode of colour rendering index when improving luminous efficiency, and its method is to increase the light shield that applies or mix fluorescent material in LED light fixture front.

2. the LED light fixture production method described in according to claim 1, it is characterized in that: the ratio of in its fluorescent material prescription, adding red fluorescent material, so namely improved colour rendering index, the reduction colour temperature of LED light fixture, can not make again the LED luminous efficiency that large-scale decline is arranged.

3. use higher color temperature LED can better solve the contradiction of low colour temperature and high light efficiency as raw material.