CN205179455U - Linear illumination lamps and lanterns - Google Patents
Linear illumination lamps and lanterns Download PDFInfo
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- CN205179455U CN205179455U CN201520905689.2U CN201520905689U CN205179455U CN 205179455 U CN205179455 U CN 205179455U CN 201520905689 U CN201520905689 U CN 201520905689U CN 205179455 U CN205179455 U CN 205179455U
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Abstract
The utility model provides a linear illumination lamps and lanterns, including the management module of LED light source and management LED light source, the LED light source has a maximum current imax, and the maximum brightness value under maximum current imax: LRmax, LGmax, LBmax, management module is used for the mixed light operation, includes: input unit receives an expectation colour and expectation colour temperature to to hope that the colour turns into color coordinates (a, b, c), to hope that the colour temperature turns into corresponding white balance brightness ratio alpha: beta: gamma, the control unit calculates duty cycle DR, DG, the DB who corresponds three primary colors RGB according to color coordinates (a, b, c), and according to maximum current imax, LRmax, LGmax, LBmax and white balance brightness ratio alpha: beta: gamma obtains full load current IRmax, IGmax, IBmax that the LED light source corresponds three primary colors RGB, drive unit is connected with the control unit, acquires duty cycle DR, DG, DB and full load current IRmax, IGmax, IBmax, calculate the output current IR, IG, the IB that correspond three primary colors RGB to the drive current of subtend LED light source output carries out the current -limiting.
Description
Technical field
The utility model relates to field of illuminating lamps, particularly relates to a kind of linear lighting light fixture.
Background technology
LED three primary colors mixed light refers to adjustment R-LED (red LED), the brightness of G-LED (green LED) and B-LED (blue led) is carried out mixed light, thus produced various lighting colour.According to Commission Internationale De L'Eclairage (CIE) chromatic diagram, the proportional quantities r (λ) of the color of light and three primary colors R, G and B, g (λ), b (λ) is relevant, and the r that satisfies condition (λ)+g (λ)+b (λ)=1.Therefore, the method can not only realize brightness regulation by the size changing LED current, and can change the color adjustment of the ratio acquisition LED of three primary colors lumen according to the hobby of user.
On the other hand, because human eye exists visual persistence, so when periodic light signal frequency is higher than critical flicker frequency, eyes are to the visual sense feeling of this periodic light signal just as constant light, and according to talbot (Talbot) law, visual brightness is:
L
all=1/T ∫ T,
D＝L(t)dt
Wherein, L (t) is the intrinsic brilliance of periodic light signal, is called luminance function, and T is the light signal cycle.For the periodic light signal being greater than critical flicker frequency, the visual brightness of eyes sensation is the mean value of intrinsic brilliance.When luminance function L (t) is for constant L, the visual brightness of periodic light signal is:
L
all=t/ (TL)=DL
Wherein, t is the time of light stimulus in each cycle, and D is duty ratio.By regulating duty ratio D, the control to LED luminance just can be realized.This control mode is called PWM mode.PWM mode controls flexibly, and being easy to digitlization, is the major way of current LED mixed light.
But when utilizing above-mentioned LED mixed light, usually can face the color coordinates parameter and luminous flux parameter that cannot know corresponding LED lamp bead.Once face this kind of situation, the disappearance due to known conditions causes carrying out mixed light.
Therefore, needing a kind of novel linear lighting light fixture, when not needing color coordinates parameter and the luminous flux parameter knowing LED lamp bead, still can complete mixed light operation as required.
Utility model content
In order to overcome above-mentioned technological deficiency, the purpose of this utility model is to provide a kind of light mixing method for LED light source and linear lighting light fixture, and user can complete in lamp side the color mixing operation of RGB to reach correct color blending effect.
The utility model discloses a kind of linear lighting light fixture, comprise LED light source and manage the administration module of described LED light source, described LED light source has a maximum current I
max, and at described maximum current I
maxthe maximum brightness value of the three primary colors RGB of lower correspondence: L
rmax, L
gmax, L
bmax; Described administration module is used for mixed light operation, comprising:
-input unit, receives a desired color and expects colour temperature, and described desired color is converted into color coordinates (a, b, c); Described expectation colour temperature is converted into corresponding white balance brightness than α: β: γ;
-control unit, calculates the duty ratio D of corresponding three primary colors RGB according to described color coordinates (a, b, c)
r, D
g, D
b; And according to described maximum current I
max, described L
rmax, L
gmax, L
bmaxand white balance brightness obtains the full-load current I of the corresponding three primary colors RGB of described LED light source than α: β: γ
rmax, I
gmax, I
bmax;
-driver element, is connected with described control unit, obtains described duty ratio D
r, D
g, D
band full-load current I
rmax, I
gmax, I
bmax; Calculate the output current I of corresponding three primary colors RGB
r, I
g, I
b, carry out current limliting with the drive current that LED light source described in subtend exports.
Preferably, described control unit is according to described L
rmax, L
gmax, L
bmaxand white balance brightness obtains the expectation brightness value of the corresponding three primary colors RGB of described LED light source than α: β: γ: L
r, L
g, L
b.
Preferably, described control unit is according to described expectation brightness value: L
r, L
g, L
band maximum current I
maxobtain described full-load current I
rmax, I
gmax, I
bmax.
Preferably, the described expectation colour temperature of described LED light source is 6000K.
Preferably, described administration module is DMX512 module.
After have employed technique scheme, compared with prior art, there is following beneficial effect:
1. host computer and the module thereof with above-mentioned linear lighting light fixture can not consider that the parameter of LED light source carries out mixed light, only need can complete mixed light operation according to the three primary colors of desired color;
2. the data volume of input is less, and mixed light is more quick.
Accompanying drawing explanation
Fig. 1 is the system schematic meeting the utility model one preferred embodiment neutral line lighting.
Embodiment
Advantage of the present utility model is set forth further below in conjunction with accompanying drawing and specific embodiment.
For the object of carrying out mixed light based on other parameters how used when mixed light except the color coordinates parameter of LED lamp bead and luminous flux parameter, the utility model discloses a kind of novel linear lighting light fixture, user only needs the color coordinates parameter (this parameter changes according to the object of user, therefore belongs to inevitable obtainable data) inputting desired color can reach the effect of RGB being carried out to correct mixed light arrangement.
Consult Fig. 1, for the linear lighting light fixture that this is novel, comprise following equipment:
-LED light source
As the luminous element of linear lighting light fixture, LED light source has following character:
Maximum current I
max, determine LED light source by rated current;
At this maximum current I
maxthe maximum brightness value of the three primary colors RGB of lower correspondence: L
rmax, L
gmax, L
bmax.
Above-mentioned data can be searched and be obtained in the specification of each LED light source or label.
-input unit
Input unit provides a user interface to user, and user can input desired data.In the prior art, the data of user's input comprise: the color coordinates parameter of the lamp pearl of LED light source and luminous flux parameter.But as described above, these type of data are difficult to obtain sometimes.Therefore, in the utility model, what input unit received is desired color and expects colour temperature, that is, the target mixed light result desired by user.Expect the light color that colour temperature is LED light source and sends under complete bright state, such as colour temperature is that about 3000K is called warm white, about 6000K is called just white or cold white, and this is that user needs to regulate according to self, or determine according to the nature of LED light source.Input unit is after receiving desired color and expectation colour temperature, desired color and expectation colour temperature are separately converted to color coordinates and white balance brightness ratio, wherein, this color coordinates is different from the color coordinates used in prior art, color coordinates in the utility model is the color coordinates of color of object, limited by user, then must belong to known data.And color coordinates of the prior art is the attribute of LED light source, as described above sometimes unknowable.
The mode that desired color can adopt those skilled in the art to commonly use with the transform mode of expectation colour temperature.Such as, with RGB color for standard, search corresponding color coordinates, as user inputs positive redness, this positive red color coordinates is: (255,0,0).Be understandable that, user can input color coordinates directly to input unit, and if a pale red is (255,0,122) at the substandard color coordinates of RGB, user inputs above-mentioned data to input unit.Other modes also can complete above-mentioned conversion process as correspondingly with color coordinates shown, expect the modes such as the corresponding table of colour temperature and white balance brightness ratio in the built-in desired color of input unit.
-control unit
Color coordinates (a, b, c), in conjunction with existing algorithm, is converted into the duty ratio D of corresponding three primary colors RGB by control unit
r, D
g, D
b.As described above, existing mixed light is many based on PWM light modulation, therefore, and duty ratio D
r, D
g, D
bbe applied to PWM Dimming operation.Account form is:
D
R＝a/255、D
G＝b/255、D
B＝c/255。
To those skilled in the art, above-mentioned account form is comparatively common in PWM mixed light.
Meanwhile, control unit is according to maximum current I
max, described L
rmax, L
gmax, L
bmaxand white balance brightness obtains the full-load current I of the corresponding three primary colors RGB of LED light source than α: β: γ
rmax, I
gmax, I
bmax.Particularly, for the basic demand that LED light source normally works, the full-load current I of corresponding three primary colors RGB
rmax, I
gmax, I
bmaxi should not be greater than
max, and due to the restriction of white balance brightness than α: β: γ, LED light source should be equal to this white balance brightness ratio based on the expectation luminosity of RGB, thus reaches expectation colour temperature.This actual luminosity is the expectation brightness value of the corresponding three primary colors RGB of LED light source: L in a preferred embodiment
r, L
g, L
b, and there is this expectation brightness value L
r, L
g, L
bafter, according to expectation brightness value L
r, L
g, L
bwith maximum brightness value L
rmax, L
gmax, L
bmaxratio equal full-load current I
rmax, I
gmax, I
bmaxwith maximum current I
maxthe equal condition of ratio, and the general principle of current limliting, obtains the full-load current I of the corresponding three primary colors RGB of LED light source
rmax, I
gmax, I
bmax.The condition mentioned in above-described embodiment is the mode of conventional calculating full-load current.This point is apparent to those skilled in the art.
I in the process of above-mentioned acquisition full-load current
rmax, I
gmax, I
bmax, use the common processing mode based on Circuit theory, other modes that those skilled in the art also can grasp according to self obtain this full-load current I
rmax, I
gmax, I
bmax.
-driver element
Be connected with control unit, the duty ratio D that reception control unit finally obtains
r, D
g, D
band full-load current I
rmax, I
gmax, I
bmax, thus calculate the output current I of three primary colors RGB
r, I
g, I
b, this output current is the drive current finally flowing to LED light source.This principle is the current-limiting mode based on talbot (Talbot) law, thus is not affecting the brightness value sending the corresponding three primary colors needing mixed light under user's visual effect.
In one preferred embodiment, the expectation colour temperature of LED light source is 6000K, and this expectation colour temperature is the LED light source of 6000K is comparatively common reference color temperature, and this white balance brightness corresponding to 6000K colour temperature, than being 3:6:1, to those skilled in the art, more easily obtains.
After having this linear lighting light fixture, administration module accessible site is in DMX512 module, or itself is shaped with DMX512 module, then coordinates with host computer, completes the linear lighting light fixture that a whole set of has mixed light pattern.
Should be noted that, embodiment of the present utility model has preferably implementation, and not any type of restriction is done to the utility model, any person skilled in art of being familiar with may utilize the technology contents of above-mentioned announcement change or be modified to equivalent effective embodiment, in every case the content of technical solutions of the utility model is not departed from, the any amendment done above embodiment according to technical spirit of the present utility model or equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (5)
1. a linear lighting light fixture, comprises LED light source and manages the administration module of described LED light source, it is characterized in that,
Described LED light source has a maximum current I
max, and at described maximum current I
maxthe maximum brightness value of the three primary colors RGB of lower correspondence: L
rmax, L
gmax, L
bmax;
Described administration module is used for mixed light operation, comprising:
-input unit, receives a desired color and expects colour temperature, and described desired color is converted into color coordinates (a, b, c); Described expectation colour temperature is converted into corresponding white balance brightness than α: β: γ;
-control unit, calculates the duty ratio D of corresponding three primary colors RGB according to described color coordinates (a, b, c)
r, D
g, D
b; And according to described maximum current I
max, described L
rmax, L
gmax, L
bmaxand white balance brightness obtains the full-load current I of the corresponding three primary colors RGB of described LED light source than α: β: γ
rmax, I
gmax, I
bmax;
-driver element, is connected with described control unit, obtains described duty ratio D
r, D
g, D
band full-load current I
rmax, I
gmax, I
bmax; Calculate the output current I of corresponding three primary colors RGB
r, I
g, I
b, carry out current limliting with the drive current that LED light source described in subtend exports.
2. linear lighting light fixture as claimed in claim 1, is characterized in that,
Described control unit is according to described L
rmax, L
gmax, L
bmaxand white balance brightness obtains the expectation brightness value of the corresponding three primary colors RGB of described LED light source than α: β: γ: L
r, L
g, L
b.
3. linear lighting light fixture as claimed in claim 2, is characterized in that,
Described control unit is according to described expectation brightness value: L
r, L
g, L
band maximum current I
maxobtain described full-load current I
rmax, I
gmax, I
bmax.
4. linear lighting light fixture as claimed in claim 1, is characterized in that,
The described expectation colour temperature of described LED light source is 6000K.
5. linear lighting light fixture as claimed in claim 1, is characterized in that,
Described administration module is DMX512 module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520905689.2U CN205179455U (en) | 2015-11-13 | 2015-11-13 | Linear illumination lamps and lanterns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520905689.2U CN205179455U (en) | 2015-11-13 | 2015-11-13 | Linear illumination lamps and lanterns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205179455U true CN205179455U (en) | 2016-04-20 |
Family
ID=55743380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520905689.2U Active CN205179455U (en) | 2015-11-13 | 2015-11-13 | Linear illumination lamps and lanterns |
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|---|---|
| CN (1) | CN205179455U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111935870A (en) * | 2020-09-18 | 2020-11-13 | 广州市浩洋电子股份有限公司 | Color unified control method for multicolor lamps |
| CN112135402A (en) * | 2020-09-28 | 2020-12-25 | 厦门阳光恩耐照明有限公司 | RGB light path current adjusting method, terminal equipment and storage medium |
-
2015
- 2015-11-13 CN CN201520905689.2U patent/CN205179455U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111935870A (en) * | 2020-09-18 | 2020-11-13 | 广州市浩洋电子股份有限公司 | Color unified control method for multicolor lamps |
| CN112135402A (en) * | 2020-09-28 | 2020-12-25 | 厦门阳光恩耐照明有限公司 | RGB light path current adjusting method, terminal equipment and storage medium |
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|---|---|---|---|
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| GR01 | Patent grant |