CN203202702U

CN203202702U - LED eye-protection light source and eye-protection lamp

Info

Publication number: CN203202702U
Application number: CN 201320123960
Authority: CN
Inventors: 季杭峰; 方溁
Original assignee: Hangzhou Honyar Electrical Co Ltd; Putian Intelligent Lighting Institute Co Ltd
Current assignee: Hangzhou Honyar Electrical Co Ltd; Putian Intelligent Lighting Institute Co Ltd
Priority date: 2013-03-18
Filing date: 2013-03-18
Publication date: 2013-09-18
Anticipated expiration: 2023-03-18

Abstract

The utility model discloses an LED eye-protection light source which comprises a substrate and an LED chip. The LED chip comprises a red light chip and a green light chip. The outgoing beams of the light source are the mixture of red light and green light in different ratios. Blue light outgoing does not exist, so that the human eyes are protected against harm of the blue light. The utility model further relates to an eye-protection lamp.

Description

A kind of LED eyeshield light source and eye-protecting lamp

Technical field

The utility model relates to a kind of LED eyeshield light source, and uses the eye-protecting lamp of this LED eyeshield light source.

Background technology

In recent years, the LED technical development is rapid, and the Novel LED illuminating light source replaces conventional lighting source just gradually with its energy-saving and environmental protection, durable characteristics.Along with the expansion of LED industry, application extensively, LED also begins to receive publicity on the impact of human body.Although the LED lighting engineering has clear superiority aspect energy-conservation and the efficient illumination, but simultaneously, led light source is also pointing out us to want acutely aware LED illumination to the risk of human-body biological secure context on amphiblestroid harm and on the impact of the biological daily life rhythm and pace of moving things.Present most White LED only excites the white light that produces behind the yellow fluorescent powder by blue-ray LED, and the peak value of the unsmooth particularly blue wave band of its curve of spectrum is apparently higher than natural daylight or incandescent lamp.

The WHO of the World Health Organization likes that eye association announces: cause global blind above 30000 people every year because of blue ray radiation in 2006 to 2008.Show according to ophthalmology branch of Chinese Medical Association data: in China 4.2 hundred million netizens, 63.5% netizen has visual impairment, cataract, the eye illness in various degree such as blind because of blue light, radiation.Existing studies show that, be exposed to for a long time in one day in the high strength blue light light, to increase the weight of macula retinae district disease, cause postcataract damage of fundus, cause the dimness of vision and dazzle, and suppress epiphysin secretion, bother sleep, improve the incidence of human body self major disease.

For avoiding blue light to the mankind's harm, taked some schemes blue light to be absorbed or hinders the outgoing of blue light in the prior art, be 201110193268.8 such as the patent No., name is called in the patent of invention of " coated filter that reduces the harm of LED blue light ", the light absorbent made from the rare earth oxide material in a side surface or the both side surface plating of matrix has been described, and this plated film matrix is placed on the bright dipping light path of light source, reach the absorption to blue light in the light source, thereby reduce blue light to the mankind's harm.The patent No. is 201120329140.5 for another example, and name is called the utility model patent of " a kind of anti-blue light LED lamp " have been described by phosphor powder layer is set, and has realized the scattering to light source outgoing blue light.

Be the absorbing and filtering to blue light ingredient in the light source outgoing beam in the said method, blue light ingredient reduces in the LED white light outgoing beam behind absorbing and filtering, thereby reduces blue light to the mankind's harm.Yet, thereby this absorption to existing blue light reaches in the method that reduces blue light, has not only wasted the energy that produces this blue light, and in order to absorb the blue light that has produced, extra increase be used for absorbing the device of blue light, improved cost.

Summary of the invention

Technical problem to be solved in the utility model just provides safe and reliable, again a kind of LED eyeshield light source of energy-conserving and environment-protective.

For solving the problems of the technologies described above, the utility model adopts following technical scheme, and a kind of LED eyeshield light source comprises substrate and led chip, and described led chip comprises red light chips and green glow chip.

Preferably, described red light chips outgoing beam peak wavelength scope is 600nm-670nm, and described green glow chip outgoing beam peak wavelength scope is 525nm-570nm.

Preferably, described led chip comprises that also the outgoing beam peak wavelength is positioned at the bluish-green chip of 490nm-515nm.

Preferably, described substrate is provided with three tracks that mutually disjoint and arrange, described track is in spiral distribution, and described red light chips, green glow chip and bluish-green chip are encapsulated in respectively on the described track, and when distributing per three different colours luminescence chips mutually near forming a luminescence unit.

Preferably, be set with the scattering sleeve of a hollow on the described led chip light beam exit direction.

Preferably, described scattering sleeve comprises incidence surface and exiting surface, and the size of described exiting surface is less than the size of described incidence surface.

Preferably, described incidence surface and described exiting surface are polygon.

Preferably, the described sleeve of penetrating comprises many oblique inclines, forms reflective surface between the adjacent described oblique incline.

The utility model also comprises a kind of eye-protecting lamp, and described eye-protecting lamp comprises above-mentioned LED eyeshield light source.

A kind of LED eyeshield of the utility model light source, light beam is the mixing of different proportion ruddiness and green glow, because of without the blue light outgoing, is conducive to protect human eye to avoid blue light harm, have advantages of simultaneously simple in structure, energy-conservation, cost is low.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is a kind of LED eyeshield light source internal structure schematic diagram of the utility model embodiment;

Fig. 2 is a kind of LED eyeshield light source general structure schematic diagram of the utility model embodiment.

The specific embodiment

To shown in Figure 2, a kind of LED eyeshield light source comprises substrate 1 and led chip as shown in Figure 1, and described led chip comprises red light chips 2 and green glow chip 3.

Led chip is comprised of red light chips 2 and green glow chip 3, and ruddiness and green glow are yellow visible light after mixing.And in the prior art, take the LED white light to obtaining by blue-light excited fluorescent material, the method for then taking to absorb blue light wherein to be reducing the exit dose of blue light, blue light content less (outgoing beam approaches yellow) in the outgoing beam that obtains by the method.And in the scheme that the utility model is taked, adopt ruddiness and green glow to blend yellow visible light, and the light intensity of the light intensity of described red light chips 2 outgoing beams and described green glow chip 3 outgoing beams all can be regulated separately, by adjusting the light intensity ratio of ruddiness and green glow, can obtain equally the light beam identical or close with LED white-light spectrum after absorbing blue light in the prior art.Can will continue illumination and to colour rendering in the less demanding application scenario, such as LED street lamp, LED Tunnel Lamp etc. at needs by the LED light fixture red, that green glow forms.

Point out in " the photo-biological security of GBT20145-2006 lamp and lamp system ", the brightness of light fixture outgoing beam is less than 10000cd/m2, and only during the outgoing visible light, can be considered without the harm light fixture.Regulate the light intensity of described red light chips 2 outgoing beams and the light intensity of described green glow chip 3 outgoing beams, so that the overall outgoing beam intensity of light fixture is below 10000cd/m2.

When the light intensity ratio of ruddiness, green glow and blue light outgoing beam was 3:6:1, the white light colour rendering that red, green, blue three Colored light mixings form was higher.The light intensity ratio of preferred described red light chips 2 outgoing beams and described green glow chip 3 outgoing beams is 1:2.

Described red light chips 2 outgoing beam peak wavelength scopes are 600nm-670nm, and described green glow chip 3 outgoing beam peak wavelength scopes are 525nm-570nm.

Except the above-mentioned embodiment that includes only red light chips 2 and green glow chip 3, the bluish-green chip 4 that can also set up on the described led chip.Described bluish-green chip 4 be positioned at 490nm-515nm.The luminescence chip that adds this wave band helps to strengthen colour rendering.Because blue light can see through the through retina of crystalline lens, the irradiating light beam peak wavelength 450-490nm of blue light, when brightness greater than 10000cd/m2, irradiation time surpasses 10s, can be to the retina injury.So the peak wavelength of the outgoing beam of the luminescence chip that adds is more than 490nm, the irradiating light beam peak wavelength greater than blue light helps to protect eyes.After adding described bluish-green chip 4, regulate the light intensity of the light intensity of described red light chips 2 outgoing beams, described green glow chip 3 outgoing beams and the light intensity of described bluish-green chip 4 outgoing beams, so that the overall outgoing beam intensity of light fixture is below 10000cd/m2.

Described substrate 1 is provided with three tracks 5 that mutually disjoint and arrange, described track is in spiral distribution, described red light chips, green glow chip and bluish-green chip are encapsulated in respectively on the described track, and when distributing per three different colours luminescence chips mutually near forming a luminescence unit.Described three tracks 5 of arranging that mutually disjoint can also be the zigzag distribution, and Spiral distribution and zigzag distribution all can take full advantage of the space on the substrate.

Be set with the scattering sleeve 6 of a hollow on the described led chip light beam exit direction.Be set with described scattering sleeve 6 and help to improve even light mixing.

Described scattering sleeve comprises incidence surface 8 and exiting surface 7, and the size of described exiting surface 7 is of value to the ejaculation of comparatively concentrating after light mixes less than the size of described incidence surface, reaches better brightness.

Described incidence surface 8 and described exiting surface 7 are polygon.The described sleeve 6 of penetrating comprises many oblique inclines 9, forms reflective surface 8 between the adjacent described oblique incline 9.Reflective surface 8 has larger surface area, helps light to mix.

Because of in the mode of printing of " in black and white ", the contrast of blank sheet of paper and surplus is stronger, and the symptoms such as dazzling, that eye is tired can appear in long-time the reading, and yellow background can be alleviated so that avoid above-mentioned situation.For specific reading environment; such as study, bookstore, library etc.; adopt red-light source and the mixed gold-tinted of green-light source as the books of reading the light source irradiation white background, can reach with adopt yellow paper printing after identical reading impression, thereby vision protection.

Claims

1. a LED eyeshield light source comprises substrate and led chip, is characterised in that: described led chip comprises red light chips and green glow chip.

2. a kind of LED eyeshield light source according to claim 1, it is characterized in that: described red light chips outgoing beam peak wavelength scope is 600nm-670nm, described green glow chip outgoing beam peak wavelength scope is 525nm-570nm.

3. a kind of LED eyeshield light source according to claim 1, it is characterized in that: described led chip comprises that also the outgoing beam peak wavelength is positioned at the bluish-green chip of 490nm-515nm.

4. a kind of LED eyeshield light source according to claim 3, it is characterized in that: described substrate is provided with three tracks that mutually disjoint and arrange, described track is in spiral distribution, described red light chips, green glow chip and bluish-green chip are encapsulated in respectively on the described track, and when distributing per three different colours luminescence chips mutually near forming a luminescence unit.

5. a kind of LED eyeshield light source according to claim 1 is characterized in that: the scattering sleeve that is set with a hollow on the described led chip light beam exit direction.

6. a kind of LED eyeshield light source according to claim 5, it is characterized in that: described scattering sleeve comprises incidence surface and exiting surface, and the size of described exiting surface is less than the size of described incidence surface.

7. a kind of LED eyeshield light source according to claim 6, it is characterized in that: described incidence surface and described exiting surface are polygon.

8. a kind of LED eyeshield light source according to claim 7, it is characterized in that: the described sleeve of penetrating comprises many oblique inclines, forms reflective surface between the adjacent described oblique incline.

9. an eye-protecting lamp is characterized in that: comprise the described LED eyeshield of claim 1 to 8 any one light source.