The centralized driving LED colored lantern lighting device
Technical field
The invention belongs to lighting technical field, relate to a kind of lighting device of LED color lamp, particularly relate to a kind of centralized driving LED colored lantern lighting device.
Background technology
The LED color lamp is a kind of color lamp that multiple color led light source pipe is set in the bulb shell; RGB color lamp for example; In the bulb shell of a RGB color lamp, be provided with the light source tube of three kinds of colors, i.e. R light source tube, G light source tube and B light source tube, said R light source tube is red light emitting diodes; The G light source tube is green LED, and the B light source tube is a blue LED.WLED color lamp and for example is provided with the light source tube of four kinds of colors in the bulb shell of a WLED color lamp, except R light source tube, G light source tube and B light source tube, also have the W light source tube, and the W light source tube is a white light-emitting diode.The LED color lamp is widely used, and like indoor and outdoor lighting and decoration, not only can regulate its brightness, can also obtain required colour mixture through the aberration of regulating its interior lights source capsule.
In a lighting device, the brightness of single LED color lamp does not often reach instructions for use, generally need many be combined and could realize good illuminating effect.At present; LED color lamp type of drive is the work of a LED color lamp of a driver drives; Owing to the light emitting diode that multiple color is arranged in the LED color lamp, these light emitting diodes need different drive currents respectively, so each driver need be exported the multichannel drive current.With reference to Fig. 1; In the lighting device of a RGB color lamp, have N RGB color lamp (be L1,, L2 ..., Ln;) and N corresponding driver (be driver 1, driver 2 ..., driver n); Each RGB color lamp is connected to the corresponding output of respective drivers, the corresponding drive current of driver constant current output multichannel, and the input of All Drives is parallel on the power line.In this lighting device; Every LED color lamp all needs a driver, converts power supply the drive current of particular current as corresponding LED color lamp into through driver, and the quantity of driver is many; It is big to take up room; Cost is high, and utilization of power efficient is lower, and is not easy to unified brightness and color of regulating lighting device.
Summary of the invention
The present invention is directed to the problems referred to above that prior art exists, a kind of centralized driving LED colored lantern lighting device is provided, be intended to improve utilization of power efficient, be convenient to regulate entire lighting device brightness and color unifiedly and flexibly, and reduce cost.
The present invention realizes through following technical proposal: centralized driving LED colored lantern lighting device; Comprise driver and at least two LED color lamps; It is characterized in that; Be provided with at least two kinds of light sources of different colors pipes in each LED color lamp, every kind of light source tube is provided with one at least, and the light source tube of same color all is connected into a corresponding series arm successively in each LED color lamp; Each bar series arm is by same driver drives, and the two ends of described each the bar series arm output corresponding with said driver connects.
Among the present invention, three kinds or four kinds of light sources of different colors pipes, i.e. RGB color lamp or WLED color lamp are arranged in the LED color lamp.Each bar series arm is by same driver drives; Driver input end is connected in power line, changes the type of drive of a driver of every LED color lamp needs in original technology, and utilization of power efficient is improved; Manufacturing cost descends, and it is little that driver accounts for the space of entire lighting device.The light source tube of the same color in the light source tube of the same color in every LED color lamp and the adjacent LED color lamp is all connected successively; Promptly the light source tube of all same colors is connected successively; Form series arm, driver constant current output multichannel drive current drives corresponding series arm.Because number of drives has only one, be convenient to unified brightness and color of regulating lighting device like this.
Series arm and driver be connected with kinds of schemes; As first kind of scheme; In above-mentioned centralized driving LED colored lantern lighting device; Described driver is provided with and the corresponding output cold end of series arm quantity and an output hot end, and the negative terminal of said each bar series arm is connected to the correspondence output cold end of driver, and its anode is connected in the output hot end of driver jointly.Series arm is formed by light source tube (being light emitting diode) series connection, and its anode is the anode of light emitting diode, and negative terminal is the negative electrode of light emitting diode.This driver with a plurality of output cold ends and an output hot end is for being total to the anode output driver.The output cold end of driver is an end of ground connection, and the end that current potential is higher than the input cold end is the output hot end.The output cold end is output end of driver with the output hot end.
As second kind of scheme; In above-mentioned centralized driving LED colored lantern lighting device; Described driver is provided with and the corresponding output hot end of series arm quantity and an output cold end; The anode of above-mentioned each bar series arm is connected to the correspondence output hot end of driver, and its negative terminal is connected in the output cold end of driver jointly.This driver with an output cold end and a plurality of output hot ends is for hold output driver altogether.
As the third scheme; In above-mentioned centralized driving LED colored lantern lighting device; Described driver be provided with the corresponding output cold end of series arm quantity and with the corresponding output hot end of series arm quantity; The anode of said each bar series arm is connected to the correspondence output hot end of driver, and the negative terminal of each bar series arm is connected to the correspondence output cold end of driver.This driver with a plurality of output cold ends and a plurality of output hot ends is for isolating output driver.
In above-mentioned centralized driving LED colored lantern lighting device, be provided with the open-circuit-protection unit that is connected across light source tube of all kinds two ends in the described LED color lamp.When certain light source tube in one of them LED color lamp is damaged; The whole piece series arm will form and open circuit; Make the open-circuit-protection cell operation, the light source tube that short circuit has damaged, also remaining light source tube in this LED color lamp of short circuit simultaneously; Be whole LED color lamp of short circuit, thereby can not influence the operate as normal of other LED color lamps.
In above-mentioned centralized driving LED colored lantern lighting device; Described open-circuit-protection unit comprises PNP triode Q1, NPN triode Q2, voltage-stabiliser tube ZD1 and is connected the forward diode and the negative sense diode at light source tube of all kinds two ends; The base stage of PNP triode Q1 is connected with the colelctor electrode of NPN triode Q2; The colelctor electrode of PNP triode Q1 is connected with the base stage of NPN triode Q2; The anode of voltage-stabiliser tube ZD1 and negative electrode cross-over connection are in the collector and emitter of PNP triode Q1, and the negative electrode of each forward diode is connected to the emitter stage of PNP triode Q1 jointly, and the anode of each forward diode connects with the anode of corresponding light source tube of all kinds; The anode of each negative sense diode is received the emitter stage of NPN triode Q2 jointly, and the negative electrode of each negative sense diode connects with the negative terminal of corresponding light source tube of all kinds.
In above-mentioned centralized driving LED colored lantern lighting device, described LED color lamp is the RGB color lamp, and driver is for being total to the anode output driver, and its output hot end is a common port, and its electric current is Io, and the electric current of output cold end is respectively Ir, Ig and Ib; Perhaps driver is for hold output driver altogether, and the output cold end is a common port, and its electric current is Io, and the electric current of its output hot end is respectively Ir, Ig and Ib, and Io is Ir, Ig, Ib sum; Perhaps driver is for isolating output driver, and the electric current of its output hot end and output cold end is respectively Ir, Ig and Ib.Perhaps, described LED color lamp is the WLED color lamp, and driver is for being total to the anode output driver; Its output hot end is a common port, and its electric current is Io, and the electric current of output cold end is respectively Ir, Ig, Ib and Iw; Perhaps driver is for hold output driver altogether; The output cold end is a common port, and its electric current is Io, and the electric current of its output hot end is respectively Ir, Ig, Ib and Iw; Io is Ir, Ig, Ib, Iw sum; Perhaps driver is for isolating output driver, and the electric current of its output hot end and output cold end is respectively Ir, Ig, Ib and Iw.
In above-mentioned centralized driving LED colored lantern lighting device, be provided with the linear adjusting control circuit of PWM adjusting control circuit or direct current in the described driver.Through PWM adjusting control circuit or the linear adjusting control circuit control of direct current output end of driver electric current, unified brightness and color of regulating the LED color lamp.
The PWM adjusting control circuit is with the switch operating frequency greater than 100HZ; The pulse duty factor that changes LED color lamp drive current with the method for pulsewidth modulation realizes the brightness adjustment control of LED color lamp; Selecting for use greater than 100HZ switch brightness adjustment control frequency mainly is for fear of human eye perceives to the light modulation scintillation; Under the PWM of LED brightness adjustment control, the luminosity of LED color lamp is proportional to the pulse duty factor of PWM, under this dimming controlling method; Can keep the glow color of LED color lamp constant in than scope in the height light modulation, adopt the light modulation of the LED brightness adjustment control of PWM can reach 3000:1 than scope.
The linear adjusting control circuit of direct current adopts the simulation dimming controlling method exactly, under the simulation brightness adjustment control, realizes the brightness adjustment control of LED color lamp through the forward operating current of regulating the LED color lamp, and the brightness adjustment control scope can reach 10:1.
Compared with prior art, the present invention has following advantage:
1, adopt the lighting device of all LED color lamp work of driver drives, use the lighting device of a driver than a LED color lamp, utilization of power efficient is higher, makes the energy saving of this lighting device.
2, the shared driver of all LED color lamps of the present invention has reduced the overall complexity of lighting device, and driver takes up room little; And reduced the specification requirement of lighting device, cost reduces, and also is convenient to the maintenance of entire lighting device; When this driver broke down, it was convenient to change maintenance.
3, each LED color lamp no longer needs individual drives, and the cost of therefore making this LED color lamp can fall very lowly, has significantly reduced the expense of the follow-up replacing of user.
4, the present invention can be adaptable across room lighting and decoration, and also can be used for occasion such as outdoor lighting decoration, and brightness and the color that can regulate entire lighting device unifiedly and flexibly to be to obtain required effect, and control is convenient.
Description of drawings
Fig. 1 is the sketch map of a kind of combined LED lighting device in the prior art.
Fig. 2 is first kind of electrical block diagram of three kinds of color LED of the present invention color lamp.
Fig. 3 is second kind of electrical block diagram of three kinds of color LED of the present invention color lamp.
Fig. 4 is the third electrical block diagram of three kinds of color LED of the present invention color lamp.
Fig. 5 is first kind of electrical block diagram of four kinds of color LED of the present invention color lamp.
Fig. 6 is second kind of electrical block diagram of four kinds of color LED of the present invention color lamp.
Fig. 7 is the third electrical block diagram of four kinds of color LED of the present invention color lamp.
Fig. 8 is the sketch map of open-circuit-protection unit in Fig. 2 circuit structure.
Fig. 9 is the sketch map of open-circuit-protection unit in Fig. 3 circuit structure.
Figure 10 is the sketch map of open-circuit-protection unit in Fig. 4 circuit structure.
Figure 11 is that the physical circuit of open-circuit-protection unit among Fig. 9 connects sketch map.
Figure 12 is that the physical circuit that the open-circuit-protection unit is set among Fig. 6 connects sketch map.
The specific embodiment
Below be specific embodiment of the present invention, and combine accompanying drawing that technical scheme of the present invention is done further to describe, but the utility model is not limited to these embodiment.
Embodiment 1:
With reference to Fig. 2, centralized driving LED colored lantern lighting device of the present invention comprises a driver 1 and at least two LED color lamps 2, the LED color lamp 2 in this example is the RGB color lamp, representes with L, and N LED color lamp 2 arranged, and then uses L1, L2 ..., Ln representes.In RGB color lamp L, be provided with R light source tube, G light source tube and B light source tube; Every kind of light source tube 3 is provided with one at least; The light source tube 3 of each LED color lamp 2 same color all is connected into a corresponding series arm successively; Each series arm is driven by same driver 1, and the two ends of each bar series arm are connected with two outputs of driver 1.
Wherein, the quantity of the every kind of light source tube 3 in each LED color lamp 2 can be one, also can be at least two.If the light source tubes of all kinds 3 in each LED color lamp 2 are equipped with one, series arm is connected in series with the anode of next LED color lamp 2 interior corresponding light source pipes 3 by the negative terminal of same light source capsule 3 respectively and forms.If the light source tube of all kinds 3 in each LED color lamp 2 is provided with two at least; Identical light source tube 3 is connected into homochromy light source tube string separately in each LED color lamp 2, and series arm is formed with next LED color lamp 2 interior corresponding light source tube string anode serial connections by homochromy light source tube 3 string negative terminals.Only draw a signal among Fig. 2.
Like Fig. 2; Comprise RGB three-color light source pipe 3 among each LED color lamp 2L of lighting device, R light source tube (one or more series connection) anode is masked as R+, its negative terminal flag bit R-; G light source tube (one or more series connection) anode is masked as G+; Its negative terminal flag bit G-, B light source tube (one or more series connection) anode is masked as B+, its negative terminal flag bit B-.Driver 1 adopts anode connected mode altogether with the connected mode of series arm, and all the R light source tubes series connection in N LED color lamp 2 form R series arms, and all G light source tubes series connection form G series arms, all B light source tubes series connection formation B series arms.The input termination power line of driver 1, input voltage is Vac, driver 1 is provided with three output cold ends and an output hot end; This driver 1 is for being total to anode output driver 1, and the way of output is total to positive output for being output as three the tunnel, and the output hot end is a common port; Its electric current is Io, and output cold end electric current is respectively Ir, Ig and Ib; Wherein, Ir is the supply current of R series arm, and Ig is the supply current of G series arm; Ib is the supply current of B series arm, and Io is three road electric current sums; The driver connected 1R of the negative terminal of R series arm road output cold end; The driver connected 1G of the negative terminal of G series arm road output cold end; The driver connected 1B of the negative terminal of B series arm road output cold end, the anode of three tunnel series arms is connected in the output hot end of driver 1 jointly.
Also can adopt and hold connected mode commonly; With reference to Fig. 3; Different with Fig. 2 is, driver 1 is three the tunnel to export altogether, and promptly the anode of R series arm, G series arm and B series arm connects three tunnel output hot ends of corresponding driver 1 output respectively; And negative terminal connects three tunnel output cold end, i.e. earth terminals of driver 1.Driver 1 is provided with output cold end and three output hot ends, and this driver 1 is for holding output driver 1 altogether, and the way of output is three the tunnel to export altogether; The output cold end is a common port, and its electric current is Io, and output hot end electric current is respectively Ir; Ig and Ib, wherein, Ir is the supply current of R series arm; Ig is the supply current of G series arm, and Ib is the supply current of B series arm, and Io is three road electric current sums.
Also can adopt three the tunnel to isolate the output connected mode, with reference to Fig. 4, different with Fig. 2 is; Driver 1 is provided with three output hot ends; This driver 1 is to isolate output driver 1, is three tunnel isolation outputs, i.e. three road output plus terminals of driver connected 1 correspondence of the anode of R series arm, G series arm and B series arm difference; Negative terminal connects three tunnel output negative terminals of driver 1 correspondence respectively, and the electric current of driver 1 output hot end and output cold end is respectively Ir, Ig and Ib.
Be provided with the linear adjusting control circuit of PWM adjusting control circuit or direct current in the driver 1, the output of driver 1 is all accepted the control of above-mentioned two kinds of adjusting control circuits, is convenient to the brightness and the color of the unified LED of adjusting color lamp 2.
With reference to Fig. 8, Fig. 9 and Figure 10, when certain light source tube 3 in one of them LED color lamp 2 was damaged, the whole piece series arm will form and open circuit, and therefore, was provided with the open-circuit-protection unit 4 that is connected across light source tube of all kinds 3 two ends in the LED color lamp 2.4 whens work in the open-circuit-protection unit, the light source tube 3 that this open-circuit-protection unit 4 can short circuits have damaged, also remaining light source tube 3 in this LED color lamp 2 of short circuit simultaneously, i.e. whole LED color lamp 2 of short circuit, thus can not influence the operate as normal of other LED color lamps 2.
Shown in figure 11; Described open-circuit-protection unit 4 comprises PNP triode Q1, NPN triode Q2, voltage-stabiliser tube ZD1 and is connected forward diode D1, D2 and D3 and negative sense diode D4, D5 and the D6 at light source tube of all kinds 3 two ends; The colelctor electrode of the base stage of PNP triode Q1 and NPN triode Q2; PNP triode Q1 colelctor electrode is connected with the base stage of NPN triode Q2; The anode of voltage-stabiliser tube ZD1 and negative electrode cross-over connection are in the collector and emitter of PNP triode Q1, and the negative electrode of forward diode D1, D2 and D3 is connected to the emitter stage of PNP triode Q1 jointly, and the anode of forward diode D1, D2 and D3 is connected with the anode of corresponding rgb light source capsule 3; The anode of negative sense diode D4, D5 and D6 connects the emitter stage of receiving NPN triode Q2 jointly, and the negative electrode of negative sense diode D4, D5 and D6 is connected with the negative terminal of corresponding rgb light source capsule 3.When each light source tube operate as normal, the voltage at light source tube two ends does not surpass the voltage stabilizing value of voltage-stabiliser tube, and voltage-stabiliser tube ends, and open-circuit-protection unit 4 is in closed condition.When certain light source tube damaged, the voltage at these light source tube two ends raise, and made the voltage-stabiliser tube conducting; Open-circuit-protection unit 4 is opened; PNP triode Q1 and NPN triode Q2 conducting because pressure drop is less, are equivalent to the light source tube short circuit that damages; The electric current of other each light source tubes all flows through from PNP triode Q1 and NPN triode Q2, makes whole LED color lamp 2 short circuits.Forward diode and negative sense diode play the effect of rectification and current limliting during this time.
Embodiment 2:
Execute example 2 basically with embodiment 1, difference is that the LED color lamp 2 in this example is the WLED color lamp, and this WLED color lamp also is provided with the W light source tube except being provided with the rgb light source capsule identical with embodiment 1.
As shown in Figure 5; Identical W light source tube is connected into a W series arm, and the anode of W series arm connects driver 1 output hot end jointly, and negative terminal is connected the output cold end of driver 1; W drives by output cold end electric current I; For being total to the anode connected mode, output hot end electric current I o is Ir, Ig, Ib, Iw sum.
As shown in Figure 6, for holding connected mode altogether, anode connects driver 1 output hot end, and negative terminal is connected the output cold end of driver 1 jointly, and w drives by output hot end electric current I, and output cold end electric current I o is Ir, Ig, Ib, Iw sum.
As shown in Figure 7, be four tunnel isolation output connected modes, anode connects driver 1 output hot end, and negative terminal is connected the output cold end of driver 1, by output hot end electric current I w driving.
Shown in figure 12; Open-circuit-protection unit 4 is identical among open-circuit-protection unit 4 and the embodiment 1; Difference is; Increased a forward diode D7 and a negative sense diode D8 in the open-circuit-protection unit 4 in present embodiment 2, the anode of forward diode D7 connects with the anode W+ of corresponding W light source tube, and the negative electrode of forward diode D7 is connected to the emitter stage of PNP triode Q1 jointly; The anode of negative sense diode D8 connects the emitter stage of receiving NPN triode Q2 jointly, and the negative electrode of negative sense diode D8 connects with the negative terminal W-of corresponding W light source tube.Its operation principle is identical with the operation principle of the open-circuit-protection unit in the RGB color lamp.