CN102777778A - Light emitting device, bulb and illuminating method - Google Patents
Light emitting device, bulb and illuminating method Download PDFInfo
- Publication number
- CN102777778A CN102777778A CN2011101236022A CN201110123602A CN102777778A CN 102777778 A CN102777778 A CN 102777778A CN 2011101236022 A CN2011101236022 A CN 2011101236022A CN 201110123602 A CN201110123602 A CN 201110123602A CN 102777778 A CN102777778 A CN 102777778A
- Authority
- CN
- China
- Prior art keywords
- light
- emitting diode
- wavelength conversion
- emitting
- emitting device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Led Device Packages (AREA)
Abstract
The invention discloses a light emitting device, an illuminating method and a bulb. The light emitting device comprises a light engine and at least one wavelength conversion element, the light engine comprises a circuit board, a blue light emitting diode and a red light emitting diode; the blue light emitting diode and the red light emitting diode are arranged on the circuit board; the wavelength conversion element at least covers the blue light emitting diode, one part of light rays emitted by the light engine generates wavelength conversion by the wavelength conversion element so as to generate a wavelength conversion light ray, the wavelength conversion light ray and light rays which are emitted by the light engine are not subjected to wavelength conversion are mixed to form white light which diffuses color along a black radiation line of a CIE-1931 chromaticity diagram, and the color temperature of the white light is between 2580K and 3220K. According to the light emitting device provided by the invention, the overall light emitting efficiency can be effectively increased.
Description
Technical field
The present invention relates to a kind of light-emitting device, relate in particular to a kind of light-emitting device with low colour temperature.
Background technology
(Light Emitted Diode LED) is a kind of semiconductor element to light emitting diode, mainly converts electrical energy into luminous energy through semiconducting compound, reaches luminous effect, therefore has characteristics such as life-span length, stable height and power consumption are little.Initial stage is used lamp mainly as indicator lamp, traffic sign or signboard billboard, along with the appearance of white light emitting diode, begins to be applied to lighting apparatus.
The production method of conventional white light light emitting diode is yellow yttrium-aluminium-garnet (Yttrium Aluminum Garnet, the YAG) phosphor powder layer of coating on blue LED chip.The yellow fluorescence bisque produces a light wavelength conversion line via a part of blue-light excited back that blue light-emitting diode sends, and other parts that light wavelength conversion line and blue light-emitting diode send do not produce white light after producing the not light wavelength conversion line mixed light that wavelength changes with yellow fluorescent powder.
Yet the blue light of the white light emitting diode that blue LED chip collocation yellow fluorescent powder is made accounts for the major part of its luminescent spectrum, causes the luminous photochromic cold white light of higher color temperature that is of this white light emitting diode.
Tradition is in the phosphor powder layer of above-mentioned white light emitting diode, to add red light fluorescent powder for to improve the higher problem of white light emitting diode colour temperature.This red fluorescence powder produces ruddiness light after blue-light excited, ruddiness light with originally had the white light mixed light of high colour temperature after, can produce the lower warm white of colour temperature.
Yet, since yellow fluorescent powder and red fluorescence powder difficulty mix, cause the uneven problem of this white light emitting diode mixed light to produce.A part of light that the while blue light-emitting diode sends is used to excite yellow fluorescent powder and red fluorescence powder; Make whole lighting efficiency descend; And yellow fluorescent powder and red fluorescence powder are along with increasing service time and making light conversion efficiency decay; Therefore after using a period of time, the generation of colour cast situation is arranged easily promptly.
Summary of the invention
Said in view of prior art, a purpose of the present invention is to provide a kind of light-emitting device, this light-emitting device supply to send one have low colour temperature the warm white line.
Another object of the present invention is to provide a kind of means of illumination, this means of illumination in order to produce one have low colour temperature the warm white line.
Another purpose of the present invention is to provide a kind of bulb, this bulb in order to send one have low colour temperature the warm white line.
For reaching above-mentioned purpose, light-emitting device of the present invention comprises a photo engine and at least one Wavelength changing element.Photo engine comprises a circuit board, a blue light-emitting diode and a red light-emitting diode, and blue light-emitting diode and red light-emitting diode are arranged on the circuit board.Wavelength changing element covers at least and closes blue light-emitting diode.Wherein the conversion of a part of light that sends of photo engine and Wavelength changing element generation wavelength is to produce a light wavelength conversion line; What light wavelength conversion line and photo engine sent one does not form a white light along the black body radiation linear light look of CIE-1931 chromatic diagram behind the light wavelength conversion line mixed light, and the colour temperature of white light falls between the 2580K to 3220K.
For reaching another object of the present invention; Means of illumination of the present invention comprises: lights a photo engine, makes photo engine send a light, and the luminous photochromic CIE-1931 chromaticity coordinate (0.5745 that falls within of light; 0.3370), (0.3420; 0.1796), in the scope that surrounded of (0.3075,0.0839), (0.6581,0.2518).Excite a fluorescent material; The light of the part that photo engine sends and the conversion of fluorescent material generation wavelength are to produce a light wavelength conversion line; Light wavelength conversion line and photo engine send other one of wavelength conversion does not take place does not form a white light along the black body radiation linear light look of CIE-1931 chromatic diagram behind the light wavelength conversion line mixed light, the colour temperature of white light falls within 2580K to 3220K.
For reaching another purpose of the present invention, bulb of the present invention comprises a photo engine, a light wavelength conversion element, a cover body and a radiating module.Photo engine comprises a circuit board, one first light-emitting component and one second light-emitting component, and first and second light-emitting component is arranged on the circuit board.The light wavelength conversion componentry covers photo engine.But cover body is constituted with the material of printing opacity and scattered beam; Radiating module combines with cover body, makes photo engine and light wavelength conversion element place between cover body and the radiating module.Wherein bulb sends one along the photochromic white light of the black body radiation of CIE-1931 chromatic diagram, and the colour temperature of white light falls between the 2580K to 3220K.
Beneficial effect of the present invention is; The present invention uses red light-emitting diode as red-light source required in the warm white spectrum; Because the luminous efficiency of the ruddiness light that red light-emitting diode sent is higher than the said ruddiness light that utilizes the blue light-emitting diode excitated red fluorescent powder to be produced of prior art, therefore can improve whole luminous efficiency effectively; And the wavelength design of red light-emitting diode makes light-emitting device obtain high color rendering.
Description of drawings
Fig. 1 is the partial sectional view of the light-emitting device of first embodiment of the invention.
Fig. 2 is the vertical view of photo engine of the light-emitting device of first embodiment of the invention.
Fig. 3 is the cutaway view along Fig. 2 A-A line.
Fig. 4 is the luminous photochromic in the sketch map of CIE-1931 chromaticity coordinate figure of corresponding photo engine of the present invention.
Fig. 5 is the circuit diagram of light-emitting device of the present invention for the present invention.
Fig. 6 is the circuit diagram of light-emitting device of the present invention for the present invention.
Fig. 7 is the circuit diagram of light-emitting device of the present invention for the present invention.
Fig. 8 is the circuit diagram of light-emitting device of the present invention for the present invention.
Fig. 9 is the circuit diagram of light-emitting device of the present invention for the present invention.
Figure 10 is white light hierarchical approaches (ANSI C78.377-2008) sketch map of ANSI.
Figure 11 is the circuit diagram of light-emitting device of the present invention.
Figure 12 is the cutaway view of the light-emitting device of second embodiment of the invention.
Figure 13 is the vertical view of photo engine of the light-emitting device of second embodiment of the invention.
Figure 14 is the luminous photochromic sketch map that falls within this CIE-1931 chromaticity coordinate figure behind corresponding second light-emitting component of the present invention and the light wavelength conversion element mixed light.
Figure 15 is the mixed light mode sketch map of light-emitting device of the present invention.
Wherein, description of reference numerals is following:
10,20 light-emitting devices
110,210 photo engines
112,222 circuit boards
114,224 first light-emitting components
116,226 second light-emitting components
120,220 light wavelength conversion elements
130 radiating modules
140,240 cover bodies
150,250 conductive contacts
160,260 drive circuits
170,270 light adjusting controllers
230 radiating pieces
30 light-emitting devices
32 blue LEDs
34 red light emitting diodes
36 fluorescent material
Lb blue light light
Lb1 first blue light light
Lb1 second portion blue light light
Lr ruddiness light
Lt light
The specific embodiment
Cooperate and to consult Fig. 1, be the partial sectional view of the light-emitting device of first embodiment of the invention.This light-emitting device 10 is a bulb, uses so that indoor and outdoor lighting to be provided.This light-emitting device 10 comprises a photo engine 110, a light wavelength conversion element 120, a radiating module 130, a cover body 140, a conductive contact 150 and one drive circuit 160.
Cooperate and consult Fig. 2 and Fig. 3, the vertical view that is respectively the photo engine of the first embodiment of the present invention reaches the cutaway view along Fig. 2 A-A line.Photo engine 110 comprises a circuit board 112, a plurality of first light-emitting component 114 and a plurality of second light-emitting component 116.Circuit board 112 is that (printed circuit board PCB), is provided with wiring and weld pad (not shown) to printed circuit board (PCB) on it, for being provided with and being electrically connected first light-emitting component 114 and second light-emitting component 116.First light-emitting component 114 and second light-emitting component 116 are arranged on this circuit board 112, and the setting of second light-emitting component 116 concentrates on the center of circuit board 112, and first light-emitting component 114 is around second light-emitting component 116, during actual enforcement not as limit.First light-emitting component 114 is electrically connected on second light-emitting component 116, and wherein first light-emitting component 114 is a blue light-emitting diode, and second light-emitting component 116 is a red light-emitting diode.
Cooperate and consult Fig. 4, be the luminous photochromic sketch map of scheming of correspondence photo engine of the present invention in CIE-1931 chromaticity coordinate (chromaticity diagram).The emission wavelength of each first light-emitting component 114 is 445 to 465 nanometers (nm), and its chromaticity coordinate falls between figure mid point B1 and the some B2; The emission wavelength of each second light-emitting component 116 is 600 to 640 nanometers, and its chromaticity coordinate falls between the some R1 and some R2 among the figure.
Each first light-emitting component 114 has a blue light-emitting diode crystal grain, and this blue light-emitting diode comprises a nodal section (junction), and the drive voltage range of each first light-emitting component 114 is 2.4 to 4.0 volts.Each second light-emitting component 116 has a red light-emitting diode crystal grain, and red light-emitting diode crystal grain comprises a nodal section, and the drive voltage range of each second light-emitting component 116 is 1.8 to 3.0 volts.Parallel connection again after first light-emitting component 114 and the 116 mixing series connection of second light-emitting component, as shown in Figure 5.Again, first light-emitting component 114 and second light-emitting component 116 are electrically connected on drive circuit 160, and drive circuit 160 is electrically connected on an AC power ACV.In addition, first light-emitting component 114 and parallel connection again after second light-emitting component 116 is connected respectively, as shown in Figure 6.
In addition, each first light-emitting component 114 can also comprise a blue light-emitting diode crystal grain, and blue light-emitting diode crystal grain comprises a plurality of nodal sections, and nodal section forms serial or parallel connection through mutual connection (interconnection) mode of semiconductor technology; Each second light-emitting component 116 also comprises a red light-emitting diode crystal grain, and red light-emitting diode crystal grain comprises a plurality of nodal sections, and nodal section all forms serial or parallel connection by the mutual connected mode of semiconductor technology.Parallel connection again after first light-emitting component 114 and the 116 mixing series connection of second light-emitting component, as shown in Figure 7.In addition, parallel connection again was as shown in Figure 8 after first light-emitting component 114 and second light-emitting component 116 can be connected respectively.The driving voltage that wherein has this first light-emitting component 114 of a plurality of nodal sections be have single nodal section first light-emitting component 114 M doubly, wherein M is the quantity of nodal section; Driving voltage with this second light-emitting component 116 of a plurality of nodal sections be have single nodal section second light-emitting component 116 N doubly, wherein N is the quantity of nodal section.
Again; Each first light-emitting component 114 can comprise a plurality of blue light-emitting diode crystal grain; Each second light-emitting component 116 comprises a plurality of red light-emitting diode crystal grain, and blue light-emitting diode crystal grain and red light-emitting diode crystal grain through packaging technology to form serial or parallel connection, as shown in Figure 9.The driving voltage that wherein comprises first light-emitting component 114 of a plurality of blue light-emitting diode crystal grain be comprise single crystal grain first light-emitting component 114 M doubly, wherein M is the quantity of crystal grain; This driving voltage that comprises second light-emitting component 116 of a plurality of red light-emitting diode crystal grain be comprise single crystal grain second light-emitting component 116 N doubly, wherein N is the quantity of crystal grain.
Consult Fig. 3 again, this light wavelength conversion element 120 covers at least should first light-emitting component 114, and this light wavelength conversion element 120 is a Wavelength changing element, and this Wavelength changing element comprises a printing opacity housing and at least one fluorescent material.This printing opacity housing is made up of silica gel (silicone), epoxy resin (epoxy), silica gel and epoxy resin composition, macromolecular material or other light-permeable materials.This fluorescent material is arranged in this printing opacity housing, and this fluorescent material is that yttrium-aluminium-garnet (YAG) fluorescent material, silicate (Silicate) fluorescent material, terbium aluminium garnet (TAG) fluorescent material, oxide (Oxide) fluorescent material, nitride (Nitride) fluorescent material or aluminum oxide fluorescent material or other can provide the fluorescent material or the material of light wavelength conversion.Light after the fluorescent material of light wavelength conversion element 120 is excited, its chromaticity coordinate fall between the some Y1 and some Y2 of Fig. 4.
The wavelength conversion takes place and produces a light wavelength conversion line in a part of light that photo engine 110 sends and light wavelength conversion element 120; The light wavelength conversion line with send by photo engine 110 one do not take place to form behind the light wavelength conversion line mixed light one regional along the warm white of the black body radiation linear light look of CIE-1931 chromaticity coordinate figure; And the colour temperature of warm white falls within 2580K (Kelvin) between the 3220K, shown in the regional W of Fig. 4.
Cooperate and to consult Figure 10, be the sketch map of the white light hierarchical approaches (ANSI C78.377-2008) of ANSI.The white light color lump is divided into eight color lumps, and its correlated colour temperature is 2700K, 3000K, 3500K, 4000K, 4500K, 5000K, 5700K and 6500K.Respectively the target correlated colour temperature of this color lump (Target CCT) is respectively 2725 ± 145K, 3045 ± 175K, 3465 ± 245K, 3985 ± 275K, 4503 ± 243K, 5028 ± 283K, 5665 ± 355K and 6530 ± 510K with tolerance (tolerance).Wherein the reference color temperature of the warm white W of present embodiment falls within 2580K (2725-145K) to the scope of 3220K (3045+174K).
Consult Fig. 4 again; The scope of the some B1 of some Y1 and some Y2 and corresponding first light-emitting component, 114 luminous wave bands and the some R1 of some B2 and corresponding second light-emitting component, 116 luminous wave bands and some R2 overlapping is that the optimal luminescent of photo engine 110 is photochromic; Luminous photochromic coordinate points P1 (0.5745,0.3370), some P2 (0.3420,0.1796), the some P3 (0.3075 that falls within the CIE-1931 chromaticity coordinate; 0.0839) and the zone that surrounded of some P4 (0.6581,0.2518) within.So, the light that the side must make photo engine 110 sent forms along the warm white zone W of the black body radiation linear light look of CIE-1931 chromaticity coordinate figure through light wavelength conversion element 120 back mixing lights, and the colour temperature of warm white falls between the 2580K to 3220K.
Consult Fig. 1 again, radiating module 130 comprises a hollow housing 132, but not as limit.This housing 132 has one first side 134 and second side 136 with respect to this first side 134.Circuit board 112 is arranged at first side 134.Cover body 140 is fixed in first side 132 of this radiating module 130 and covers photo engine 110 and this Wavelength changing element 120, makes photo engine 110 and light wavelength conversion element 120 place between cover body 140 and the radiating module 130.Cover body 140 is attached to that light wavelength conversion element 120 and aqueous vapor infiltrate into circuit board 112 and illumination efficiency and service life of influencing light-emitting device 10 in order to avoid micro mist dirt, but wherein cover body 140 is constituted with the material of printing opacity and scattered beam.
In addition, light-emitting device 10 also comprises a light adjusting controller 170, and light adjusting controller 170 is electrically connected on drive circuit 160, with the conducting of first light-emitting component 114 and said a plurality of second light-emitting components 116 of control photo engine 110, by adjusting with light and shade brightness.
Therefore, export photo engine 110 to after converting a galvanic current source by the AC power of conductive contact 150 output into via drive circuit 160, emit beam to drive photo engine 110.The wavelength conversion takes place and produces a light wavelength conversion line in a part of light that photo engine 110 sends and light wavelength conversion element 120; What light wavelength conversion line and photo engine 110 sent one does not form a white light along the black body radiation linear light look of CIE-1931 chromaticity coordinate figure behind the emission wavelength conversion light mixed light, and its colour temperature falls between the 2580K to 3220K.
Cooperate and to consult Figure 12, be the partial sectional view of the light-emitting device of second embodiment of the invention.Light-emitting device 20 comprises a photo engine 210, a plurality of light wavelength conversion element 220, a radiating piece 230, a cover body 240, a conductive contact 250 and one drive circuit 260.
Cooperate and to consult Figure 13, be the vertical view of the photo engine of second embodiment of the invention.Photo engine 210 comprises a circuit board 212, a plurality of first light-emitting component 214 and a plurality of second light-emitting component 216.Circuit board 212 is a printed circuit board (PCB).First light-emitting component 214 and second light-emitting component 216 are arranged on the circuit board 212, and first light-emitting component 214 is electrically connected on second light-emitting component 216.
Cooperate and consult Figure 14, be the luminous photochromic sketch map that falls within CIE-1931 chromaticity coordinate figure behind correspondence second light-emitting component of the present invention and the light wavelength conversion element mixed light.First light-emitting component 214 is a blue light-emitting diode, and the emission wavelength of first light-emitting component 214 is 445 to 465 nanometers, and its chromaticity coordinate falls between figure mid point B1 and the some B2.Second light-emitting component 216 is a red light-emitting diode, and the emission wavelength of second light-emitting component 216 is 600 to 640 nanometers, and its chromaticity coordinate falls between the some R1 and some R2 among the figure.
Consult Figure 12 again, light wavelength conversion element 220 covers accordingly respectively and closes first light-emitting component 214, and light wavelength conversion element 220 is a Wavelength changing element, and Wavelength changing element 220 comprises a printing opacity housing and at least one fluorescent material.The printing opacity housing is made up of silica gel (silicone), epoxy resin (epoxy), silica gel and epoxy resin composition, macromolecular material or other light-permeable materials.Fluorescent material is arranged in the printing opacity housing or coats the surface of printing opacity housing, and fluorescent material is that yttrium aluminium garnet fluorescent powder, silicate fluorescent powder, terbium aluminium garnet fluorescent material, oxide fluorescent powder, Nitride phosphor or aluminum oxide fluorescent material or other can provide the fluorescent material or the material of light wavelength conversion.Light after fluorescent material in the light wavelength conversion element 220 is excited, its chromaticity coordinate fall between the some Y1 and some Y2 of Figure 14.
The wavelength conversion takes place and produces a light wavelength conversion line in a part of light that the light that first light-emitting component 212 of photo engine 210 sends sends and light wavelength conversion element 220; The light wavelength conversion line with send by photo engine 210 one do not take place to form behind the light wavelength conversion line mixed light one regional along the warm white of the black body radiation linear light look of CIE-1931 chromaticity coordinate figure, the colour temperature of its warm white falls between the 2580K to 3220K.
For making the temperature range of the warm white line that light-emitting device 10 sends fall between the 2580K to 3220K; Wavelength conversion back takes place and produces a light wavelength conversion line in a part of light system that first light-emitting component 114 is sent and light wavelength conversion element 120; The light wavelength conversion line with send by this first light-emitting component 114 one the luminous photochromic CIE-1931 of the falling within chromaticity coordinate behind the light wavelength conversion line mixed light do not take place coordinate points Q1 (0.3162; 0.5367), Q2 (0.2620,0.3878), Q3 (0.3822,0.3827), Q4 (0.4308; 0.4639) within the color lump that surrounded, shown in figure 14.
Consult Figure 12 again; Cover body 240 covers at photo engine 210 and light wavelength conversion element 220; Illumination efficiency and service life of influencing this light-emitting device 10 in order to avoid micro mist dirt to be attached to that light wavelength conversion element 120 and aqueous vapor infiltrate into photo engine 210, but wherein cover body 240 is constituted with the material of printing opacity and scattered beam.
The circuit of the light-emitting device of second embodiment of the invention and first embodiment are similar, repeat no more in this.
Cooperate and consult Figure 15, be the mixed light mode sketch map of light-emitting device of the present invention.The mixed light mode of light-emitting device is carefully stated as follows:
At first, light a photo engine 30.Photo engine 30 comprises at least one blue light-emitting diode 32 and at least one red light-emitting diode 34; Blue light-emitting diode 32 sends the blue ray Lb that an emission wavelength is 445 to 465 nanometers, and this red light-emitting diode 34 sends the red light Lr that an emission wavelength is 600 to 640 nanometers.When photo engine 30 is lighted, send a light Lt, light Lt is blue light Lb and ruddiness Lr sum; Luminous photochromic CIE-1931 chromaticity coordinate (0.5745,0.3370), (0.3420,0.1796), (0.3075 of falling within of light Lt; 0.0839), in (0.6581,0.2518) scope of being surrounded.
Then, by optical excitation one fluorescent material 36 of photo engine 30, this fluorescent material 36 is yttrium aluminium garnet fluorescent powder, silicate fluorescent powder, terbium aluminium garnet fluorescent material, oxide fluorescent powder, Nitride phosphor or aluminum oxide fluorescent material.
In photo engine 30; The wavelength conversion takes place to produce a light wavelength conversion line Ly in the blue light light Lb1 of the first excitated fluorescent powder 36 that blue light-emitting diode 32 sends; Wherein light wavelength conversion line Ly with send by this blue light-emitting diode 32 one without the luminous photochromic CIE-1931 of the falling within chromaticity coordinate (0.3162 behind the second portion blue light light Lb2 mixed light of light wavelength conversion line; 0.5367), (0.2620; 0.3878), in the scope that surrounded of (0.3822,0.3827) and (0.4327,0.4639).Wherein blue light light Lb is blue light light Lb1 of first and second portion blue light light Lb2 sum.
Light wavelength conversion line Ly and photo engine 30 send other white light along the black body radiation linear light look of CIE-1931 chromaticity coordinate figure does not take place to form behind not light wavelength conversion line (like Lb2 and the Lr) mixed light of wavelength conversion, its colour temperature falls within 2580K to 3220K.
Comprehensive the above, light-emitting device of the present invention uses red light-emitting diode as red-light source required in the warm white spectrum.With as the required red-light source of warm white spectrum, light-emitting device of the present invention can improve whole luminous efficiency effectively, and needn't worry the generation of colour cast problem compared to the said blue light-emitting diode excitated red fluorescent powder that utilizes of prior art.Again, the design of the wavelength of red light-emitting diode makes light-emitting device of the present invention obtain high color rendering.
Right the above person is merely preferred embodiment of the present invention, and when can not limiting the scope that the present invention implements, promptly all equivalent variations of doing according to claim of the present invention and modification etc. all should still belong to the category that patent covering scope intention of the present invention is protected.
Claims (25)
1. light-emitting device comprises:
One photo engine comprises a circuit board, a blue light-emitting diode and a red light-emitting diode, and this blue light-emitting diode and this red light-emitting diode are arranged at this circuit board; And
At least one Wavelength changing element, cover is should blue light-emitting diode at least;
Wherein, A part of light that this photo engine sends and the conversion of this Wavelength changing element generation wavelength are to produce a light wavelength conversion line; What this light wavelength conversion line and this photo engine sent one does not form a white light along the black body radiation linear light look of CIE-1931 chromatic diagram behind the light wavelength conversion line mixed light, and the colour temperature of this white light falls between the 2580K to 3220K.
2. light-emitting device as claimed in claim 1; It is characterized in that the conversion of a part of light that this blue light-emitting diode sent and this Wavelength changing element generation wavelength to be producing this light wavelength conversion line, a light wavelength conversion line mixed light luminous photochromic CIE-1931 chromaticity coordinate (0.3162 that falls within afterwards not of this light wavelength conversion line and this blue light-emitting diode; 0.5367), (0.2620; 0.3878), in the scope that surrounded of (0.3822,0.3827) and (0.4308,0.4639).
3. light-emitting device as claimed in claim 1 is characterized in that, this photo engine luminous photochromic falls within the zone that CIE-1931 chromaticity coordinate (0.5745,0.3370), (0.3420,0.1796), (0.3075,0.0839), (0.6581,0.2518) surrounded.
4. light-emitting device as claimed in claim 1 is characterized in that, the emission wavelength of this blue light-emitting diode is 445 to 465 nanometers.
5. light-emitting device as claimed in claim 1 is characterized in that, the emission wavelength of this red light-emitting diode is 600 to 640 nanometers.
6. light-emitting device as claimed in claim 1 is characterized in that, this Wavelength changing element comprises a printing opacity housing and at least one fluorescent material.
7. light-emitting device as claimed in claim 6 is characterized in that, this fluorescent material is yttrium aluminium garnet fluorescent powder, silicate fluorescent powder, terbium aluminium garnet fluorescent material, oxide fluorescent powder, Nitride phosphor or aluminum oxide fluorescent material.
8. light-emitting device as claimed in claim 6 is characterized in that, this printing opacity housing uses silica gel, epoxy resin, silica gel and epoxy resin composition or macromolecular material to form.
9. light-emitting device as claimed in claim 1 is characterized in that, this light-emitting device also comprises:
One radiating module comprises a housing, and this housing has one first side and second side with respect to this first side;
One cover body is fixed in this first side of this radiating module and covers this photo engine and this Wavelength changing element;
One drive circuit is arranged at this enclosure interior, and is electrically connected at this photo engine; And
One conductive contact is arranged at this second side of this radiating module, and is electrically connected at this drive circuit.
10. light-emitting device as claimed in claim 1 is characterized in that, this photo engine also includes a plurality of blue light-emitting diodes and a plurality of red light-emitting diode, and this blue light diode is electrically connected at this red light-emitting diode.
11. light-emitting device as claimed in claim 10 is characterized in that, parallel connection again after said a plurality of red light-emitting diodes and said a plurality of blue light-emitting diode are connected respectively.
12. light-emitting device as claimed in claim 10 is characterized in that, parallel connection again after said a plurality of red light-emitting diodes and the said a plurality of blue light-emitting diode mixing series connection.
13. like claim 11 or 12 described light-emitting devices; It is characterized in that; Respectively this blue light-emitting diode has at least one blue light-emitting diode crystal grain; And this blue light-emitting diode crystal grain comprises at least one nodal section, and respectively this red light-emitting diode has at least one red light-emitting diode crystal grain, and this red light-emitting diode crystal grain comprises at least one nodal section.
14. light-emitting device as claimed in claim 10 is characterized in that, said a plurality of red light-emitting diode settings concentrate on the center of this circuit board, and this blue light-emitting diode is around said a plurality of red light-emitting diodes.
15. a means of illumination comprises:
Light a photo engine, make this photo engine send a light, and this light luminous photochromic falls within the scope that CIE-1931 chromaticity coordinate (0.5745,0.3370), (0.3420,0.1796), (0.3075,0.0839), (0.6581,0.2518) surrounded;
Excite a fluorescent material; The light of the part that this photo engine sends and the conversion of this fluorescent material generation wavelength are to produce a light wavelength conversion line; This light wavelength conversion line and this photo engine send other one of wavelength conversion does not take place does not form a white light along the black body radiation linear light look of CIE-1931 chromatic diagram behind the light wavelength conversion line mixed light, the colour temperature of this white light falls within 2580K to 3220K.
16. means of illumination as claimed in claim 15; It is characterized in that; This light wavelength conversion line and this be luminous photochromic CIE-1931 chromaticity coordinate (0.3162,0.5367), (0.2620,0.3878), (0.3822 of falling within behind the light wavelength conversion line mixed light not; 0.3827) and (0.4327,0.4639) scope of being surrounded in.
17. means of illumination as claimed in claim 15 is characterized in that, this photo engine comprises at least one blue light-emitting diode and at least one red light-emitting diode.
18. light-emitting device as claimed in claim 17 is characterized in that, the emission wavelength of this blue light emitting diode element is 445 to 465 nanometers.
19. light-emitting device as claimed in claim 17 is characterized in that, the emission wavelength of this red light-emitting diode element is 600 to 640 nanometers.
20. light-emitting device as claimed in claim 15 is characterized in that, this fluorescent material is yttrium aluminium garnet fluorescent powder, silicate fluorescent powder, terbium aluminium garnet fluorescent material, oxide fluorescent powder, Nitride phosphor or aluminum oxide fluorescent material.
21. a bulb comprises:
One photo engine comprises a circuit board, one first light-emitting component and one second light-emitting component, and this first and second light-emitting component is arranged on this circuit board;
One light wavelength conversion element, part covers this photo engine;
One cover body is constituted with light transmissive material; And
One radiating piece combines with this cover body, makes this photo engine and this light wavelength conversion element place between this cover body and this radiating piece;
Wherein this bulb sends one along the photochromic white light of the black body radiation of CIE-1931 chromatic diagram, and the colour temperature of this white light falls between the 2580K to 3220K.
22. bulb as claimed in claim 21 is characterized in that, the emission wavelength of this first light-emitting component is that the emission wavelength of 445 to 465 nanometers and this second light-emitting component is 600 to 640 nanometers.
23. bulb as claimed in claim 21 is characterized in that, this photo engine luminous photochromic falls within the zone that CIE-1931 chromaticity coordinate (0.5745,0.3370), (0.3420,0.1796), (0.3075,0.0839), (0.6581,0.2518) surrounded.
24. bulb as claimed in claim 21 is characterized in that, this light wavelength conversion element comprises yttrium aluminium garnet fluorescent powder, silicate fluorescent powder, terbium aluminium garnet fluorescent material, oxide fluorescent powder, Nitride phosphor or aluminum oxide fluorescent material.
25. bulb as claimed in claim 21; It is characterized in that; The light that this first illuminating part sends is through the luminous photochromic CIE-1931 of falling within chromaticity coordinate (0.3162,0.5367), (0.2620,0.3878), (0.3822 behind this light wavelength conversion element; 0.3827) and (0.4308,0.4639) scope of being surrounded in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101236022A CN102777778A (en) | 2011-05-13 | 2011-05-13 | Light emitting device, bulb and illuminating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101236022A CN102777778A (en) | 2011-05-13 | 2011-05-13 | Light emitting device, bulb and illuminating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102777778A true CN102777778A (en) | 2012-11-14 |
Family
ID=47122804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101236022A Pending CN102777778A (en) | 2011-05-13 | 2011-05-13 | Light emitting device, bulb and illuminating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102777778A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421711A (en) * | 2013-08-30 | 2015-03-18 | Lg伊诺特有限公司 | Lighting device |
| CN111542370A (en) * | 2018-12-07 | 2020-08-14 | 首尔伟傲世有限公司 | LED lighting device with cell activation function |
| CN111755431A (en) * | 2018-11-29 | 2020-10-09 | 首尔伟傲世有限公司 | Lighting device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326230A (en) * | 2000-05-31 | 2001-12-12 | 松下电器产业株式会社 | Luminous diode lamp |
| CN201039523Y (en) * | 2007-04-27 | 2008-03-19 | 宁波升谱光电半导体有限公司 | A high color index high-power white light LED part |
| CN101213675A (en) * | 2005-06-30 | 2008-07-02 | 松下电工株式会社 | Light-emitting device |
| US20090015137A1 (en) * | 2007-07-13 | 2009-01-15 | Lite-On Technology Corporation | Light emitting apparatus with open loop control |
| CN101688644A (en) * | 2007-05-08 | 2010-03-31 | 科锐Led照明科技公司 | Lighting device and lighting method |
| CN101846245A (en) * | 2007-11-05 | 2010-09-29 | 恩纳特隆公司 | Light source and method of controlling light spectrum of led light engine |
| WO2010132220A1 (en) * | 2009-05-15 | 2010-11-18 | Peiching Ling | Methods and apparatus for forming uniform layers of phosphor material on an led encapsulation structure |
| US20100301728A1 (en) * | 2009-06-02 | 2010-12-02 | Bridgelux, Inc. | Light source having a refractive element |
| US20110095686A1 (en) * | 2009-10-22 | 2011-04-28 | Light Prescriptions Innovators, Llc | Solid-state light bulb |
-
2011
- 2011-05-13 CN CN2011101236022A patent/CN102777778A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326230A (en) * | 2000-05-31 | 2001-12-12 | 松下电器产业株式会社 | Luminous diode lamp |
| CN101213675A (en) * | 2005-06-30 | 2008-07-02 | 松下电工株式会社 | Light-emitting device |
| CN201039523Y (en) * | 2007-04-27 | 2008-03-19 | 宁波升谱光电半导体有限公司 | A high color index high-power white light LED part |
| CN101688644A (en) * | 2007-05-08 | 2010-03-31 | 科锐Led照明科技公司 | Lighting device and lighting method |
| US20090015137A1 (en) * | 2007-07-13 | 2009-01-15 | Lite-On Technology Corporation | Light emitting apparatus with open loop control |
| TW200903855A (en) * | 2007-07-13 | 2009-01-16 | Lite On Technology Corp | Light-emitting device with open-loop control |
| CN101846245A (en) * | 2007-11-05 | 2010-09-29 | 恩纳特隆公司 | Light source and method of controlling light spectrum of led light engine |
| WO2010132220A1 (en) * | 2009-05-15 | 2010-11-18 | Peiching Ling | Methods and apparatus for forming uniform layers of phosphor material on an led encapsulation structure |
| US20100301728A1 (en) * | 2009-06-02 | 2010-12-02 | Bridgelux, Inc. | Light source having a refractive element |
| US20110095686A1 (en) * | 2009-10-22 | 2011-04-28 | Light Prescriptions Innovators, Llc | Solid-state light bulb |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421711A (en) * | 2013-08-30 | 2015-03-18 | Lg伊诺特有限公司 | Lighting device |
| CN104421711B (en) * | 2013-08-30 | 2019-07-12 | Lg伊诺特有限公司 | Lighting device |
| CN111755431A (en) * | 2018-11-29 | 2020-10-09 | 首尔伟傲世有限公司 | Lighting device |
| CN111542370A (en) * | 2018-12-07 | 2020-08-14 | 首尔伟傲世有限公司 | LED lighting device with cell activation function |
| CN111542370B (en) * | 2018-12-07 | 2023-12-26 | 首尔伟傲世有限公司 | LED lighting device with cell activation function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101419954B1 (en) | Lighting device and lighting method | |
| JP6369784B2 (en) | LIGHT EMITTING DEVICE AND LIGHTING LIGHT SOURCE AND LIGHTING DEVICE USING THE SAME | |
| US8403531B2 (en) | Lighting device and method of lighting | |
| US8662732B2 (en) | Light emitting diode devices containing replaceable subassemblies | |
| US7918581B2 (en) | Lighting device and lighting method | |
| EP2095438B1 (en) | Lighting device and lighting method | |
| KR101499269B1 (en) | Lighting devices, methods of lighting, light filters and methods of filtering light | |
| US20060067073A1 (en) | White led device | |
| JP5325208B2 (en) | Lighting device and lighting method | |
| CN101493216B (en) | LED light source module | |
| KR20090086455A (en) | Lighting device and lighting method | |
| CN100438026C (en) | White light light-emitting diode and producing method thereof | |
| CN102714260A (en) | Solid state lighting devices including light mixtures | |
| KR20140097328A (en) | Solid state lighting device including multiple wavelength conversion materials | |
| KR20130019027A (en) | Lighting device and lighting method | |
| KR20060034056A (en) | Phosphor and led using the same | |
| TWI451048B (en) | Lighting device, lamp and method for lighting the same | |
| RU2691638C2 (en) | Lighting device, led strip, lamp and lighting device manufacturing method | |
| US8269428B2 (en) | Light emitting diode devices containing replaceable subassemblies | |
| JP2015176967A (en) | Light emitting device, lighting device and packaging board | |
| US9200766B2 (en) | Lighting fixture | |
| CN102777778A (en) | Light emitting device, bulb and illuminating method | |
| JP6712768B2 (en) | Light emitting device and lighting device | |
| EP2095689A2 (en) | Lighting device and lighting method | |
| US20160076712A1 (en) | Light emitting apparatus, lighting light source, and lighting apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121114 |