A kind of tunable optical toning LED integrated optical sources
Technical field
The present invention relates to lighting area more particularly to LED illuminations.
Background technology
With the progress of LED (Light-Emitting Diode, light emitting diode) technology, LED light source gradually replaces
The conventional light sources such as fluorescent lamp, incandescent lamp, are widely used in every field.With the continuous improvement of people's living standards, light is
Through no longer only meeting the needs of illumination, the abundant and dynamic of lighting colour is gradually pursued by people, and people tend to lamp
Influence of the illuminating effect institute that light belt comes to the generation of the psychology and environment of people.So in order to preferably play LED in terms of illumination
Advantage, the adjustable LED light source of colour temperature brightness become industry development inexorable trend.
The main implementation method of the integrated optical source of adjustable color temperature brightness at present installs several warm white low color temperature LED in same substrate
Light source and several high color temperature LED light sources, in use, driving IC gives several low color temperature LED light sources and several high color temperature LED lights respectively
Source is independently-powered.By adjust be supplied to the size of current of high low color temperature LED light source realize product whole color temperature change and
Brightness change.
The electric current for needing the several paths of LEDs light sources of independent control of existing general tunable optical toning integrated optical source scheme is big
It is small, necessarily lead to be related to that electronic component is more, and cost is higher, it is complicated for operation.
Invention content
Technical problem underlying to be solved by this invention is to provide a kind of tunable optical toning LED integrated optical sources, can synchronize
The brightness for controlling different-colour light source in integrated optical source goes out light color temperature and brightness to adjust integrated optical source, circuit simply at
This is low.
In order to solve the above technical problems, the present invention provides a kind of tunable optical toning LED integrated optical sources, including base
Plate divides warm colour temperature LED slide glasses area and cool colour temperature LED slide glasses area on the substrate;The warm colour temperature LED slide glasses area and cool colour temperature
Warm colour temperature LED chip and cool colour temperature LED chip, and the warm colour temperature LED chip and cool colour temperature are respectively set in LED slide glasses area
The serial number of LED chip differs;
The substrate also has positive electrode and negative electrode outside warm colour temperature LED slide glasses area and cool colour temperature LED slide glasses area;It is described
The positive electrode and negative electrode, the cool colour temperature LED chip series connection are connected to by first resistor after the series connection of warm colour temperature LED chip
The positive electrode and negative electrode are connected to by second resistance afterwards;
When the positive electrode and negative electrode are connected to input power, the warm colour temperature LED chip and cool colour temperature LED are flowed through
The current value of chip is inconsistent so that the brightness of the warm colour temperature LED chip and cool colour temperature LED chip is inconsistent;And it flows through
The current value of the warm colour temperature LED chip and cool colour temperature LED chip changes with the variation of input supply voltage so that LED
Integrated optical source go out light color temperature and brightness changes also with the variation of input supply voltage.
In a preferred embodiment:Different colours are respectively coated in the warm colour temperature LED chip and cool colour temperature LED chip
First fluorescent colloid and the second fluorescent colloid.
In a preferred embodiment:First fluorescent colloid is nitride red fluorescent powder and aluminate yellow fluorescence
Two or more of mixtures in powder, silicate yellow fluorescent powder, silicate green fluorescent powder, aluminate green fluorescent powder.
In a preferred embodiment:Second fluorescent colloid is nitride red fluorescent powder and aluminate yellow fluorescence
Two or more of mixtures in powder, silicate yellow fluorescent powder, silicate green fluorescent powder, aluminate green fluorescent powder;
And the content of nitride red fluorescent powder is less than nitride red fluorescent powder in the first fluorescent colloid in the second fluorescent colloid
Content.
In a preferred embodiment:The common split in the warm colour temperature LED slide glasses area and cool colour temperature LED slide glasses area forms a circle
Shape or rectangular slide glass area.
In a preferred embodiment:One or two of the warm colour temperature LED slide glasses area and cool colour temperature LED slide glasses area are wrapped
Include at least two sub- slide glass areas.
In a preferred embodiment:The subregion of the subregion and cool colour temperature LED slide glasses area in warm colour temperature LED slide glasses area
Alternate setting.
In a preferred embodiment:Warm colour temperature LED chip in the subregion in each warm colour temperature LED slide glasses area
Serial number is identical;The serial number phase of cool colour temperature LED chip in the subregion in each cool colour temperature LED slide glasses area
Together.
In a preferred embodiment:In the subregion in warm colour temperature LED slide glasses area warm colour temperature LED chip series connection after with
Warm colour temperature LED chip connection in series-parallel in the subregion in another warm colour temperature LED slide glasses area;The son in cool colour temperature LED slide glasses area
In region cool colour temperature LED chip series connection after with the cool colour temperature LED chip string in the subregion in another cool colour temperature LED slide glasses area
It is in parallel.
In a preferred embodiment:The material of the substrate is metal or ceramics.
Compared to the prior art, technical scheme of the present invention has following advantageous effect:
A kind of tunable optical toning LED integrated optical sources provided by the present invention, by the way that substrate is divided at least two slide glasses
Area, at least two slide glass area constitute different colour temperature areas.Pass through different-colour area chipset series connection number and current limliting electricity
Resistance realizes that the variation of positive and negative anodes input voltage is adjusted, the curent change ratio in different-colour area is realized, so that different-colour
The LED chip brightness in area is different, finally realizes the purpose that integrated optical source colour temperature brightness is adjusted with the adjusting of input voltage.On
The tunable optical toning LED integrated optical sources stated are more easy compared with general approach, that is, save light source product cost, in turn simplify lamps and lanterns
Peripheral control power supply.
Description of the drawings
Fig. 1 is the schematic diagram of the LED integrated optical sources of the preferred embodiment of the present invention 1;
Fig. 2 is the connection circuit diagram of LED chip in LED integrated optical sources in the preferred embodiment of the present invention 1;
Fig. 3 is the schematic diagram of the LED integrated optical sources of the preferred embodiment of the present invention 2.
Specific implementation mode
With reference to the accompanying drawings and examples, the present invention is described in further detail.
Embodiment 1
With reference to figure 1-2, a kind of tunable optical is mixed colours LED integrated optical sources, including metal or ceramic substrate 1, is drawn on the substrate 1
For warm colour temperature LED slide glasses area 11 and cool colour temperature LED slide glasses area 12;Warm colour temperature LED slide glasses area 11 and cool colour temperature LED slide glasses area
Warm colour temperature LED chip and cool colour temperature LED chip, and the warm colour temperature LED chip and cool colour temperature LED chip are respectively set in 12
Serial number differ;
In order to which allow warm colour temperature LED chip and cool colour temperature LED chip goes out light color temperature difference, the warm colour temperature LED chip and
The first fluorescent colloid and the second fluorescent colloid of different colours is respectively coated in cool colour temperature LED chip.First fluorescent colloid
For nitride red fluorescent powder and aluminate yellow fluorescent powder, silicate yellow fluorescent powder, silicate green fluorescent powder, aluminate
Two or more of mixtures in green emitting phosphor.Second fluorescent colloid is that nitride red fluorescent powder and aluminate are yellow
It is two or more of mixed in color fluorescent powder, silicate yellow fluorescent powder, silicate green fluorescent powder, aluminate green fluorescent powder
Close object;And the content of nitride red fluorescent powder is less than nitride red fluorescence in the first fluorescent colloid in the second fluorescent colloid
The content of powder.
The substrate 1 also has box dam glue region 15 outside warm colour temperature LED slide glasses area 11 and cool colour temperature LED slide glasses area 12,
Positive electrode 13 and negative electrode 14;The positive electrode 13 is connected to by first resistor after the warm colour temperature LED chip series connection and is born
Electrode 14 is connected to the positive electrode 13 and negative electrode 14 after the cool colour temperature LED chip series connection by second resistance;
When the positive electrode 13 and negative electrode 14 are connected to input power, due to warm colour temperature LED chip and cool colour temperature LED
The quantity of chip differs, so the current value for flowing through the warm colour temperature LED chip and cool colour temperature LED chip is inconsistent so that
The brightness of the warm colour temperature LED chip and cool colour temperature LED chip is inconsistent;And flow through the warm colour temperature LED chip and cool colour
The current value of warm LED chip changes with the variation of input supply voltage so that LED integrated optical sources go out light color temperature and brightness
Change also with the variation of input power.
Specific in the present embodiment, warm colour temperature LED slide glasses area 11 and the 12 common split of cool colour temperature LED slide glasses area are formed
One circular slide glass area.Warm colour temperature LED slide glasses area 11 and cool colour temperature LED slide glasses area 12 are marked off using white glue in slide glass area, and
And warm colour temperature LED slide glasses area 11 and cool colour temperature LED slide glasses area 12 are respectively closed area.
In the present embodiment, warm colour temperature LED slide glasses area 11 and cool colour temperature LED slide glasses area 12 are respectively divided into multiple sons again
Slide glass area.Specifically:The subregion in warm colour temperature LED slide glasses area 11 and the subregion in cool colour temperature LED slide glasses area 12 along
Horizontal direction parallel alternates setting.Warm colour temperature LED chip in the subregion in each warm colour temperature LED slide glasses area 11
Quantity it is identical and be 10;The quantity of cool colour temperature LED chip in the subregion in each cool colour temperature LED slide glasses area 12
It is identical and be 12.
In the subregion in warm colour temperature LED slide glasses area 11 warm colour temperature LED chip series connection after with another warm colour temperature LED
Warm colour temperature LED chip connection in series-parallel in the subregion in slide glass area 11;Cool colour in the subregion in cool colour temperature LED slide glasses area 12
After the series connection of warm LED chip with the cool colour temperature LED chip connection in series-parallel in the subregion in another cool colour temperature LED slide glasses area 12.
Following table is that above-mentioned LED integrated optical sources go out the light color temperature table of comparisons under different input powers.
CW (cool colour temperature LED chip):Colour temperature 10000K;
WW (warm colour temperature LED chip):Colour temperature 2200K;
As can be seen from the above table, in the case where input voltage is constant, in cool colour temperature LED chip and warm colour temperature LED chip
The electric current flowed through is inconsistent, can thus make cool colour temperature LED chip and warm colour temperature LED mixing light extractions.And in input voltage
In the case of variation, the amplitude of variation of the electric current flowed through in cool colour temperature LED chip and warm colour temperature LED chip be also it is different,
Cool colour temperature LED chip and the luminance difference ratio of warm colour temperature LED can thus be changed, so that the colour temperature of mixing light extraction occurs
Variation.
A kind of above-mentioned tunable optical toning LED integrated optical sources, it is described by the way that substrate 1 is divided at least two slide glass areas
At least two slide glass areas constitute different colour temperature areas.By different-colour area chipset series connection number and current-limiting resistance, realize
The variation of positive and negative anodes input voltage is adjusted, and the curent change ratio in different-colour area is realized, so that the LED in different-colour area
Chip brightness is different, finally realizes the purpose that integrated optical source colour temperature brightness is adjusted with the adjusting of input voltage.Above-mentioned can
Light modulation toning LED integrated optical sources are more easy compared with general approach, that is, save light source product cost, in turn simplify and contained outside lamps and lanterns
Power supply processed.
Embodiment 2
With reference to figure 3, the present embodiment and embodiment 1 difference lies in:Warm colour temperature LED slide glasses area 11 and cool colour temperature LED slide glasses
The position in area 12 divides different from embodiment 1.
In the present embodiment, warm colour temperature LED slide glasses area 11 is divided into two sub-regions, respectively circular subregion and annular
Subregion;The circle centre position in circular slide glass area is arranged in wherein circular subregion.The subregion of annular and circular sub-district
Domain is with one heart and interval is arranged.In the present embodiment, in addition cool colour temperature slide glass area 12 does not divide subregion, is an individual annulus
Domain is arranged between circular subregion and the subregion of annular.Rest part is same as Example 1, repeats no more.
The above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be to the present invention
Embodiment restriction.It is all the present invention design and technical solution within made by all any modification, equivalent and improvement
Deng should all be included in the scope of protection of the claims of the present invention.