CN201391790Y

CN201391790Y - High color rendering LED device

Info

Publication number: CN201391790Y
Application number: CN200920144985U
Authority: CN
Inventors: 吴明昌; 魏志宏; 吴智龙
Original assignee: High Power Lighting Corp
Current assignee: High Power Lighting Corp
Priority date: 2009-03-06
Filing date: 2009-03-06
Publication date: 2010-01-27
Anticipated expiration: 2019-03-06

Abstract

The utility model provides a high color rendering LED device, which comprises a base plate, three white light units arranged on the base plate to be the elements of the LED color blended by blue light crystal grains and fluorescent glue, and a red light unit arranged on the base plate and between the three white light units, which is the element of the LED color blended by red light crystal grains and fluorescent powder; due to the distribution of the white light units and the red light unit, a high color rendering warm white light can be produced by the utility model after the light blending, and the light source produced has a higher comfort degree for the eyes of the users, especially in the environment with large-amount usage of LED, the visual un-comfort of the user can be reduced as expected.

Description

High color rendering light emitting diode device

Technical field

The utility model relates to a kind of high color rendering light emitting diode device, relates in particular to a kind of appropriate configuration white light diode and ruddiness diode to improve the light-emitting diodes body device of color rendering.

Background technology

As shown in Figure 5, the white light diode 6 of prior art, it includes a printed circuit board (PCB) 61, with a groove 611 and anchors at blue light crystal grain 62 in this groove 611, an and fluorescent glue 63 of inserting in this groove 611, wherein this blue light crystal grain 62 can produce blue light after exciting, and then includes yellow phosphor powder in this fluorescent glue 63; By this, can utilize the blue light that blue light crystal grain 62 produced and the mutual colour mixture of yellow phosphor powder of fluorescent glue 63, and produce required white light.

Though above-mentioned existing white light diode 6 can utilize blue light crystal grain 6 and cooperating of fluorescent glue 63 to produce required white light, but because the sodium yellow color rendering deficiency between the two that blue light that blue light crystal grain 62 is sent and fluorescent glue 63 are produced, therefore also can't properly produce the light source of positive white light in the mixed light mode, the light source that is sent after mixed light is the deflection sodium yellow, it is not the light source of positive white light, this makes white light diode 6 can't reach the effect that it declares to send the high color rendering white light, when a large amount of the use, probably cause uncomfortable phenomenons such as user's eye fatigue.

The utility model content

Therefore, main purpose of the present utility model is the disappearance that is to solve prior art, so that light-emittingdiode obtains high color rendering, and can reach the effect of sending comfortable warm white light source.

For reaching above-mentioned purpose, high color rendering light emitting diode device provided by the utility model comprises:

One substrate;

Three white light unit, described three white light unit correspondences are arranged on the substrate and the light emitting diode element for utilizing blue light crystal grain and fluorescent glue institute colour mixture to form, and are mixed with yellow phosphor powder in the fluorescent glue; With

One red light unit, described red light unit is arranged on the substrate, as a light emitting diode element of being made up of ruddiness crystal grain and phosphor powder institute colour mixture.

Best, the employed phosphor powder of ruddiness crystal grain is green fluorescent powder and diffusant.

Best, the position distribution of white light unit on substrate presents the appropriate location that the configuration of any geometric figure and red light unit are positioned at relative three white light unit.

Best, its X value is between 0.3 to 0.4 in CIE 1931 colour systems in the white light unit, and the Y value is between 0.4-0.5, and the human eye visible wavelength is between between the 540nm to 580nm; And the human eye visible wavelength of red light unit between 595nm between the 625nm.

Best, photochromic the drilling in the colour system system at CIE 1931 of ratio of the present utility model dropped in the black body radiation line about up and down 0.03, and wavelength is between the 575nm to 595nm.

Best, set up at least three white light unit and at least one red light unit on the substrate in addition, its quantitative proportion is three to one.

Best, white light unit, red light unit to be configured to per three white light unit and a red light unit be unit, constituent parts presents matrix or annular arrangement.

In sum, because the position distribution of white light unit and red light unit, can allow the utility model send the warm white of high color rendering behind the mixed light, the light source that is produced has higher comfort level for user's eyes, photochromic the drilling in the colour system system at CIE 1931 of its ratio can fall the position in black body radiation line about up and down 0.03, and the human eye visible wavelength is between the 580nm to 590nm, under the environment that uses light-emittingdiode, but the phase is reduced the visually uncomfortable situation of user.

Description of drawings

Fig. 1 is a vertical view of the present utility model;

Fig. 2 is a side view of the present utility model;

Fig. 3 is an outside drawing of the present utility model;

Fig. 4 is CIE 1931x of the present utility model, the y chromatic diagram;

Fig. 5 is the side view of prior art.

Wherein, description of reference numerals is as follows:

Substrate 10, white light unit 20, red light unit 30, block 70, block 80, block 90, black body radiation line 91, white light diode 6, printed circuit board (PCB) 61, groove 611, blue light crystal grain 62, fluorescent glue 63.

The specific embodiment

For the effect that can further understand feature of the present utility model, content, advantage and can reach, now be described in detail as follows with accompanying drawing in conjunction with appended preferred embodiment is attached.The illustrated embodiment of this accompanying drawing only is used to illustrate the technical solution of the utility model, and non-limiting the utility model.

Fig. 1 is a vertical view of the present utility model, Fig. 2 is a side view of the present utility model, Fig. 3 is an outside drawing of the present utility model, as shown in Figure 1 to Figure 3, the high color rendering light emitting diode device of the utility model embodiment can comprise a substrate 10, three white light unit 20 and a red light unit 30 and constitutes in a preferred embodiment.

Substrate 10 is one to have certain thickness high heat-conducting plate body.

White light unit 20 correspondences are arranged on the substrate 10 and are any geometric figure configuration, it is the light emitting diode element that utilizes blue light crystal grain and fluorescent glue institute colour mixture to form, wherein be mixed with yellow phosphor powder in the fluorescent glue so light emitting diode element can be inspired subalbous photochromic, moreover, Fig. 4 is CIE 1931x of the present utility model, the y chromatic diagram, as shown in Figure 4, optimized white light unit 20 is a block 70 in CIE 1931 colour systems, its X value is between 0.3 to 0.4, the Y value is between 0.4-0.5, and the human eye visible wavelength is the white light of a yellowing between between the 540nm to 580nm.

Red light unit 30 is arranged on the substrate 10, be positioned at the appropriate location of three white light unit 20, it is a light emitting diode element of being made up of ruddiness crystal grain and phosphor powder institute colour mixture, wherein phosphor powder can be green fluorescent powder and diffusant, the human eye visible wavelength of this ruddiness crystal grain is rough to arrive 640nm between 585nm, purity is more than 95%, in order to increase the colour mixture effect, therefore mix make red light unit 30 with phosphor powder wavelength between 595nm to (shown in the block 80 of Fig. 4) between the 625nm.

Position distribution owing to three white light unit 20 and a red light unit 30, can reduce behind the mixed light because of the white light unit 20 color rendering deficiency of sodium yellow slightly, can allow the utility model high color rendering light emitting diode device send the warm white of high color rendering, the light source that is produced has higher comfort level for user's eyes, its ratio is photochromic to be drilled in the colour system system shown in block 90 at CIE 1931, can fall the position in black body radiation line 91 about up and down 0.03, and the human eye visible wavelength is between the 575nm to 595nm, under the environment that uses a large amount of use light-emittingdiodes, can significantly reduce the visually uncomfortable situation of user.

Can set up at least three white light unit 20 and at least one red light unit 30 in addition on the substrate 10 in addition, its quantitative proportion is necessary for three to one, moreover white light unit 20, red light unit 30 to be configured to per three white light unit 20 and a red light unit 30 be unit, constituent parts presents matrix or annular arrangement.

In sum, the utility model is being broken through under the situation of prior art constructions, reached really to want the effect of promoting, and neither the person of ordinary skill in the field expected easily.Moreover the utility model was open before application, the progressive of its tool, practicality, and the obvious application important document that has met utility model patent is then filed an application in accordance with the law.

What need statement is that the above-mentioned utility model content and the specific embodiment are intended to prove the practical application of technical scheme that the utility model provides, and should not be construed as the qualification to the utility model protection domain.Those skilled in the art are in spirit of the present utility model and principle, when doing various modifications, being equal to and replacing or improve.Protection domain of the present utility model is as the criterion with appended claims.

Claims

1, a kind of high color rendering light emitting diode device is characterized in that, described high color rendering light emitting diode device comprises:

One substrate;

2, high color rendering light emitting diode device according to claim 1 is characterized in that, the employed phosphor powder of ruddiness crystal grain is green fluorescent powder and diffusant.

3, high color rendering light emitting diode device according to claim 1 is characterized in that, the position distribution of white light unit on substrate presents the appropriate location that the configuration of any geometric figure and red light unit are positioned at relative three white light unit.

4, high color rendering light emitting diode device according to claim 1 and 2, it is characterized in that, the X value of white light unit in CIE 1931 colour systems is between 0.3 to 0.4, and the Y value is between 0.4～0.5, and the human eye visible wavelength is between between the 540nm to 580nm; And the human eye visible wavelength of red light unit between 595nm between the 625nm.

5, high color rendering light emitting diode device according to claim 1 is characterized in that, photochromic the drilling in the colour system system at CIE 1931 of ratio of the present utility model dropped in the black body radiation line about up and down 0.03, and wavelength is between the 575nm to 595nm.

6, high color rendering light emitting diode device according to claim 1 is characterized in that, sets up at least three white light unit and at least one red light unit on the substrate in addition, and its quantitative proportion is three to one.

7, high color rendering light emitting diode device according to claim 6 is characterized in that, white light unit, red light unit to be configured to per three white light unit and a red light unit be unit, constituent parts presents matrix or annular arrangement.