CN201830496U - Light emitting diode (LED) dimmer - Google Patents
Light emitting diode (LED) dimmer Download PDFInfo
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- CN201830496U CN201830496U CN201020215838XU CN201020215838U CN201830496U CN 201830496 U CN201830496 U CN 201830496U CN 201020215838X U CN201020215838X U CN 201020215838XU CN 201020215838 U CN201020215838 U CN 201020215838U CN 201830496 U CN201830496 U CN 201830496U
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Abstract
The utility model relates to a light emitting diode (LED) dimmer comprising a brightness setting device, a brightness detector and a controller, wherein the output ends of the brightness setting device and the brightness detector are connected with the input end of the controller. When the LED dimmer is in a brightness setting state, the electric connection of the public input ends of the brightness setting device and the brightness detector and the input end of the dimmer is realized; the brightness detector is used for detecting the brightness value of a current environment, and the controller is used for receiving the target brightness value of an irradiation area and the brightness value of the current environment; and when the brightness value of the current environment is smaller than the target brightness value of the irradiation area, the difference value between the target brightness value of the irradiation area and the brightness of the current environment is calculated to obtain the target value of the self brightness of an LED, the target value of the drive current of the LED is obtained according to the corresponding relationship between the self brightness of the LED and the drive current of the LED, and a current regulation signal reflecting the target value of the drive current of the LED is output to a driving power supply of the LED.
Description
Technical field
The utility model belongs to LED control field, relates in particular to a kind of LED dimmer.
Background technology
LED belongs to semiconductor optoelectronic component, and LED is simpler because of its manufacturing process flow, and manufacturing cost is hanged down at lighting field and obtained using widely.LED has high light transmittance efficiency, and is safe and reliable, and it adopts electroluminescence, has the advantages that the life-span is long, radiation is low and low in energy consumption.
At lighting field, especially room lighting field, in order to make the total brightness of LED irradiation area reach certain value, usually need to adjust self brightness as the LED of lighting source, the total brightness of so-called LED irradiation area is self brightness sum of ambient brightness and LED, so-called ambient brightness equals to remove the brightness of the irradiation area after self brightness of LED, after self zero degree of LED is meant that illumination that LED sends is mapped to irradiation area, and the brightness variable quantity that this zone is produced.Because the type of drive of LED adopts the mode of constant current usually, so adjust the output current realization that the driver of adjusting LED is passed through in the brightness of LED usually.At present, brightness regulation for LED all is to adopt manual adjustments, for example, be arranged on manual regulating device on the lighting apparatus by manual setting, change the copped wave angle of the output voltage signal that is arranged on the dimmer in the lighting apparatus, so that the driver of LED, is controlled the variation to the electric current of LED output according to the variation at the copped wave angle of dimmer output voltage signal, thereby realize the purpose of the brightness of manual adjustment LED.Because in the prior art, need manual adjustment LED brightness, the adjustment process trouble in order to make the brightness of field of illumination reach certain value.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of LED dimmer, utilizes this dimmer can realize the brightness regulation of LED more conveniently.
For achieving the above object, an embodiment of the present utility model provides a kind of LED dimmer, comprise: comprise brightness settings device, brightness detector and controller, the output of described brightness settings device and brightness detector links to each other with the input of controller, when the LED dimmer was in the brightness settings state, the public input of described brightness settings device and brightness detector was realized being electrically connected with the input of described dimmer; Described brightness settings device is used to preestablish the target brightness value of irradiation area; Described brightness detector is used to detect the current environment brightness value, described controller is used to receive the target brightness value and the current environment brightness value of described irradiation area, when current environment brightness value during less than the target brightness value of irradiation area, calculate the target brightness value of described irradiation area and the difference between the current environment brightness, obtain the desired value of LED self brightness, according to self brightness of LED and the corresponding relation between its drive current, obtain the drive current desired value of LED, and adjust signal to the electric current of the drive current desired value of LED driving power output reflection LED, so that the LED driving power equates with the desired value of described LED drive current to the drive current of LED output.
Preferably, described controller is specially to the electric current adjustment signal of the drive current desired value of the reflection LED of LED driving power output: the electric current that comprises the information of LED drive current desired value is adjusted signal.
Preferably, described LED dimmer also comprises an operating state switch, described operating state switch comprises the first sub-switch and the second sub-switch, the fixed contact of the described first sub-switch is connected with the input of described dimmer, first moving contact of the described first sub-switch is connected with the fixed contact of the second sub-switch, first moving contact of the second sub-switch is connected with the 3rd moving contact of the first sub-switch, and second moving contact of the first sub-switch and second moving contact of the second sub-switch are unsettled;
The fixed contact of the second sub-switch also links to each other with the common port of described brightness settings device and brightness detector, and the 3rd moving contact of the described first sub-switch links to each other with a power input of LED driving power;
When the first sub-switch contacted its first moving contact and the second sub-switch and contacts its first moving contact, described dimmer was in the brightness settings state.
Preferably, described LED dimmer also comprises operating state switch and manual regulating device, described operating state switch comprises the first sub-switch and the second sub-switch, the fixed contact of the described first sub-switch is connected with the input of described dimmer, first moving contact of the described first sub-switch is connected with the fixed contact of the second sub-switch, first moving contact of the second sub-switch is connected with the 3rd moving contact of the first sub-switch, and second moving contact of the first sub-switch and second moving contact of the second sub-switch are unsettled;
The fixed contact of the described second sub-switch also links to each other with the common port of described brightness settings device and brightness detector, the 3rd moving contact of the described first sub-switch links to each other with a power input of LED driving power by described manual regulating device, and described manual regulating device is also exported manual brightness regulated signal to described controller;
When the first sub-switch contacted its first moving contact and the second sub-switch and contacts its first moving contact, described dimmer was in the brightness settings state;
When the first sub-switch contacts the 3rd moving contact and the second sub-switch and contacts second moving contact, described dimmer is in manual set condition, this moment, described manual regulating device was exported manual brightness regulated signal to controller, made controller according to manual brightness regulated signal output current conditioning signal.
Preferably, described LED dimmer also comprises a dimmer switch, and described controller is adjusted signal by described dimmer switch to the input output current of described LED driving power, and changes the copped wave phase angle that described electric current is adjusted signal by described dimmer switch; Described controller is adjusted signal to the electric current of the drive current desired value of the reflection LED of LED driving power output and is specially: the electric current with copped wave phase angle corresponding with the drive current desired value of described LED is adjusted signal.
Preferably, described LED dimmer also comprises an operating state switch, described operating state switch comprises the first sub-switch and the second sub-switch, the fixed contact of the described first sub-switch is connected with the input of described dimmer, first moving contact of the described first sub-switch is connected with the fixed contact of the second sub-switch, first moving contact of the second sub-switch is connected with the 3rd moving contact of the first sub-switch, and second moving contact of the first sub-switch and second moving contact of the second sub-switch are unsettled;
The fixed contact of the second sub-switch also links to each other with the common port of described brightness settings device and brightness detector, and the 3rd moving contact of the described first sub-switch links to each other with a power input of LED driving power;
The 3rd moving contact of the first sub-switch is connected with first end of described dimmer switch, and second end of dimmer switch links to each other with a power input of LED driving power;
Described controller is connected with the 3rd end of described dimmer switch;
When the first sub-switch contacted its first moving contact and the second sub-switch and contacts its first moving contact, described dimmer was in the brightness settings state.
Preferably, during target brightness value that described controller also is used for setting more than or equal to the brightness settings device when current environment brightness, output reflection LED drive current desired value is that zero electric current is adjusted signal.
Preferably, described LED driving power is arranged in the described LED dimmer.
According to the utility model embodiment, can realize regulating automatically self brightness of LED, make the brightness of irradiation area be equal to or higher than default brightness value.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic diagram of an embodiment of the LED dimmer that provides of the utility model;
Fig. 2 is the schematic diagram of another embodiment of the LED dimmer that provides of the utility model;
Fig. 3 is the schematic diagram of another embodiment of the LED dimmer that provides of the utility model;
Fig. 4 is the schematic diagram of another embodiment of the LED dimmer that provides of the utility model;
Fig. 5 is the schematic diagram of another embodiment of the LED dimmer that provides of the utility model;
Fig. 6 is the schematic diagram of another embodiment of the LED dimmer that provides of the utility model.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment one
Fig. 1 shows the dimmer applications scene that present embodiment provides.As shown in Figure 1, LED 3 drives by LED driving power 2, and LED driving power 2 is to LED 3 output constant currents, i.e. the brilliance control of 2 couples of LED 3 of LED driving power is that the amplitude by the output current that changes LED driving power 2 realizes.The dimmer 1 that provides in the present embodiment is connected between AC power 4 and the LED driving power 2, and particularly, dimmer 1 has input i11 and the first output o11 and the second output o12; One end of AC power 4 connects the input i11 of dimmer 1, and the other end connects the second input i22 of LED driving power 2.Dimmer 1 comprises brightness settings device 11, brightness detector 12 and controller 13.When being in the brightness settings state, the input i11 of dimmer 1 is by an input of brightness settings device 11 connection controllers 13, and the input i11 of dimmer also connects another input of controllers 13 by brightness detector 12 simultaneously.The output of controller 13 connects the 3rd input i23 of LED driving power.
Wherein, brightness settings device 11 is used to set the target brightness value L of irradiation area
o, brightness detector 12 is used to detect current environment brightness.Controller 13 is used to receive the target brightness value of the irradiation area that brightness settings device 11 sets and the current environment brightness L that brightness detector 12 detects
c, judge current environment brightness L
cThe target brightness value L that sets less than brightness settings device 11 whether
oIf, less than, then calculate the difference between target brightness value and the current environment brightness, obtain the desired value of LED self brightness, according to self brightness of LED and the corresponding relation between its drive current, obtain the drive current desired value of LED; Described controller 13 is adjusted signal by output o12 to the 3rd input i23 input current of LED driving power 2, described electric current is adjusted the information that comprises LED drive current desired value in the signal, LED driving power 2 is adjusted signal according to 13 electric currents that receive from the controller of dimmer 1, change the drive current of output valve LED3, and the electric current that the drive current after changing equals to receive is adjusted the drive current desired value that comprises in the signal, need to prove, when the total brightness of judging the irradiation current zone that brightness detector 12 detects when controller 13 equals the target brightness value of brightness settings device 11 predefined irradiation areas, to not export any signal, make LED driving power 2 not change current output driving current, to keep the brightness of current LED 3.In a word, the above-mentioned functions by controller 13 can so that the total brightness of irradiation area equate with predefined target brightness value.If controller 13 is judged current environment brightness more than or equal to brightness settings device 11 predefined target brightness values in addition, then the LED drive current desired value that is comprised in the electric current adjustment signal of controller 13 outputs is zero, make LED driving power 2 after receiving electric current adjustment signal, the drive current of output is set to zero, make LED 3 not luminous, owing to reached or be higher than predefined target brightness value at ambient brightness, then from the economize on electricity angle, no longer need to increase in addition the brightness of irradiation area, so controller 13 is adjusted into zero action with output current and can effectively saves electric energy by LED.
In summary it can be seen, be lower than at ambient brightness under the situation of predefined target brightness value, if ambient brightness reduces, then the electric current of controller 13 output is adjusted the target current value that is comprised in the signal and will be increased, makes self brightness with raising LED 3 of drive current that LED driving power 2 increases output; If ambient brightness raises, then the target brightness value that is comprised in the electric current adjustment signal of controller output will reduce, make drive current that LED driving power 2 reduces to export to reduce self brightness of LED 3, in a word, after having preestablished a target brightness value by brightness settings device 11, this dimmer 1 can be adjusted signal according to current ambient brightness output current at any time so that LED 3 self brightness and ambient brightness be always maintained on the target brightness value.In addition, be greater than or equal at ambient brightness under the situation of predefined target brightness value, controller 13 will impel LED 3 not luminous, reach purpose of energy saving.
Need to prove, in practice, not always need regulate self brightness of LED according to ambient brightness, sometimes brightness work a period of time that LED need be after adjusting, to achieve these goals, the LED dimmer 1 that provides in the present embodiment preferably is provided with an operating state switch 14 between input i11 and brightness settings device 11 and brightness detector 12, this operating state switch 14 comprises two sub-switches, hereinafter referred to as the first sub-switch 14a and the second sub-switch 14b, wherein the first sub-switch 14a is provided with a fixed contact 141a and three moving contacts, below is called the first moving contact 142a, the second moving contact 143a and the 3rd moving contact 144a; The second sub-switch 14b is provided with a fixed contact 141b and two moving contacts, is respectively the first moving contact 142b and the second moving contact 143b.Wherein, the fixed contact 141a of the first sub-switch 14a is connected with the input i11 of dimmer, the first moving contact 142a of the first sub-switch 14a is connected with the fixed contact 141b of the second sub-switch 14b, the first moving contact 142b of the second sub-switch 14b links to each other with the 3rd moving contact 144a of the first sub-switch 14a, in addition, the fixed contact 141b of the second sub-switch 14b also is connected with the common port of brightness detector 12 towards dimmer input i11 one side with brightness settings device 11, the second moving contact 143a of the first sub-switch is unsettled, and the second moving contact 143b of the second sub-switch is also unsettled.When the first sub-switch 14a contacts the first moving contact 142a and the second sub-switch 14b and contacts the first moving contact 142b, dimmer 1 is operated in the brightness settings state, brightness settings device 11 and brightness detector 12 and LED driving power can both realize with dimmer in being electrically connected of input i11, thereby be these device power supplies.And the brightness settings device 11 in the dimmer 1, brightness detector 12 and controller 13 carry out work according to function mentioned above, realize that self brightness to LED automatically adjusts according to ambient brightness.
When the first sub-switch 14a contacted the second moving contact 143a, then the brightness settings device 11 in LED driving power 2, the dimmer, brightness detector 12 and controller 13 all disconnected with input i11, can't obtain supply of electric power, so this moment, LED 3 extinguished.
And when the first sub-switch 14a contacts the 3rd moving contact 144a and the second sub-switch 14b and contacts the second moving contact 143b, brightness detector 12 in the dimmer and controller 13 all disconnect with input i11, and realize being electrically connected between LED driving power 4 and the input i11, because LED driving power 4 does not receive the electric current of controller 13 outputs and adjusts signal, therefore LED driving power 4 is exported constant drive current to LED, so this moment, LED 3 was operated in the high-high brightness state.
Embodiment two
In Fig. 1, controller 13 in the dimmer 1 or self-powered (for example battery etc.), in the middle of the LED driving power, obtain power supply, but the latter's supply voltage is less, in order to make controller 13 can obtain power supply signal more easily, Fig. 2 shows another embodiment of the dimmer that the utility model provides, as shown in Figure 2, the difference of the dimmer among the dimmer in the present embodiment 1 and Fig. 1 only is: controller 13 increase an end, and the end that should increase and AC power 4 in be not connected the end connection of the input i11 of dimmer.Like this, when dimmer 1 is operated in the brightness settings state, controller 13 can directly obtain power supply by AC power 4, but need to prove, though an end of controller 13 is directly connected to an end of AC power 4, but when the first sub-switch 14a contacted the second moving contact 143a, owing to can't form current circuit between controller 13 and the AC power 4, controller 13 also still can not be worked.
Embodiment three
The first sub-switch 14a in the operating state switch 14 in Fig. 1 and the dimmer 1 shown in Fig. 2 contacts the 3rd moving contact 144a, and when the second sub-switch 14b contacts the second moving contact 143b, LED driving power 2 is operated in the state of uncontrollable output maximum drive current, and also can introduce the scheme of manual adjustments LED self brightness in the reality, Fig. 3 shows another embodiment of the dimmer that the utility model provides, as shown in Figure 3, connect between the 3rd moving contact 144a that the difference of the dimmer among this dimmer 1 and Fig. 1 only is the first sub-switch 14a of switch 14 in working order and the output o11 of dimmer and insert on the other hand moving adjusting device 15, and the first moving contact 142b of the second sub-switch 14b connects the end of manual regulating device 15 towards LED driving power 2, promptly is connected with dimmer output o11.
When the first sub-switch 14a contacts the 3rd moving contact 144a and the second sub-switch 14b and contacts the second moving contact 143b, this manual regulating device 15 is also to the manual brightness regulated signal of controller 13 outputs, the user can control the variation of the current regulating signal of controller 13 outputs by regulating manual regulating device 15, thereby the output driving current that changes LED driving power 2 changes, and changes self brightness of LED3.As seen, the dimmer among Fig. 3 not only can be operated in the state of automatic adjusting LED brightness, and also can realize the function of LED brightness regulation by the mode of manual adjustments in another operating state.Certainly, the dimmer among Fig. 3 also can controller 13 increase an end, and the end that should increase and AC power 4 in be not connected the input i11 of dimmer an end connect, make that controller 13 can be by the direct acquisition power supplys of AC power 4.
Embodiment four
Fig. 4 shows the application scenarios that present embodiment provides another kind of dimmer, the difference of dimmer and above-mentioned several embodiment is in the present embodiment, adjust the form difference of signal at the electric current of dimmer middle controller output, in above several embodiment, the electric current of slave controller output is adjusted in the signal and is directly comprised the target current value information, and the controller in the present embodiment is to change the copped wave phase angle that electric current is adjusted signal by the control dimmer switch, transmits the target current value information to the LED driving power.As shown in Figure 4, in the present embodiment, LED 3 drives by LED driving power 2, and LED driving power 2 is to LED 3 output constant currents, i.e. the brilliance control of 2 couples of LED 3 of LED driving power is that the amplitude by the output current that changes LED driving power 2 realizes.The dimmer 1 that provides in the present embodiment is connected between AC power 4 and the LED driving power 2.Particularly, dimmer 1 has input i12 and output o13.One end of AC power 4 connects the input i12 of dimmer 1, and the other end connects LED driving power 2 second input i25.
Dimmer 1 comprises brightness settings device 11, brightness detector 12, controller 13 and dimmer switch 16.When being in the brightness settings state, the input i12 of dimmer 1 is by an input of brightness settings device 11 connection controllers 13, and the input i12 of dimmer 1 also connects another input of controllers 13 by brightness detector 12 simultaneously.The output of controller 13 is connected with dimmer switch 16, turn-offs and closure by control dimmer switch 16, adjusts signal, i.e. chopping voltage to LED driving power 2 output currents.When the brightness settings state, the two ends of dimmer switch 16 are connected with the common port of brightness settings device 11 and brightness detector 12 and the output o13 of dimmer respectively.
Wherein, brightness settings device 11 is used to set the target brightness value of irradiation area, and brightness detector 12 is used to detect the total brightness in current environment brightness and irradiation current zone.Controller 13 is used to receive the target brightness value of the irradiation area that brightness settings device 11 sets and the current environment brightness that brightness detector 12 detects and the total brightness in irradiation current zone, judge the target brightness value whether current environment brightness set less than the brightness settings device, if less than, then calculate the difference between target brightness value and the current environment brightness, obtain the desired value of LED self brightness, according to self brightness of LED and the corresponding relation between its drive current, obtain the drive current desired value of LED.Controller 13 is according to the above-mentioned LED drive current desired value that obtains, adjust controller 13 is adjusted copped wave phase angle from signal to the electric current of LED driving power 2 outputs by dimmer switch 16, there is corresponding relation between the copped wave phase angle of electric current adjustment signal and the drive current of LED driving power 2 outputs, after LED driving power 2 receives electric current adjustment signal, copped wave phase angle according to this signal obtains corresponding drive current desired value, and the drive current with output is adjusted into above-mentioned drive current desired value then.Need to prove, when the total brightness that calculates the irradiation current zone that brightness detector 12 detects when controller 13 equals the target brightness value of brightness settings device 11 predefined irradiation areas, the electric current that does not change output is adjusted the copped wave phase angle of signal, make LED driving power 2 not change current output driving current, to keep the current brightness of LED 3.In a word, the above-mentioned functions by controller 13 can so that the total brightness of irradiation area equate with predefined target brightness value.
In addition, if controller 13 is judged current environment brightness more than or equal to brightness settings device 11 predefined target brightness values, then controller 13 will be adjusted the copped wave phase angle of the electric current adjustment signal of output by dimmer switch 16, make LED driving power 2 according to this copped wave phase angle the drive current of output be set to zero, LED 3 is not luminous.Because ambient brightness has reached or has been higher than the target brightness value of setting, so angle from economize on electricity, no longer need to increase by LED in addition the brightness of irradiation area, so the action that controller 13 impels LED driving power 2 that the drive current of output is set to zero can be saved electric energy effectively.
In summary it can be seen, be lower than at ambient brightness under the situation of predefined target brightness value, if ambient brightness reduces, then controller 13 must make LED driving power 2 increase the drive current of output to the copped wave phase angle of the electric current adjustment signal of LED driving power 2 outputs, to improve self brightness of LED 3, the brightness of keeping irradiation area is steady state value, if ambient brightness raises, then controller 13 is adjusted the drive current that the copped wave phase angle of signal must make LED driving power 2 reduce to export to the electric current of LED driving power 2 output, to reduce self brightness of LED 3, the brightness of keeping irradiation area is steady state value.In a word, after having preestablished a target brightness value by brightness settings device 11, this dimmer 1 can be adjusted signal according to the electric current that the output of current ambient brightness have a corresponding copped wave phase angle at any time, so that the summation (being the total brightness of irradiation area) of LED 3 self brightness and ambient brightness maintains on the target brightness value.In addition, be greater than or equal to when ambient brightness under the situation of predefined target brightness value, controller 13 will impel LED 3 not luminous, reach purpose of energy saving.
Need explanation be, in practice, LED does not need to be operated at any time the state of automatic brightness adjustment, sometimes brightness work a period of time that LED need be after adjusting.For achieving the above object, the LED dimmer 1 that provides in the present embodiment preferably is provided with an operating state switch 14 between input i12 and brightness settings device 11 and brightness detector 12, to realize the switching of operating state, wherein operating state switch 14 comprises two sub-switches, hereinafter referred to as the first sub-switch 14a and the second sub-switch 14b, wherein the first sub-switch 14a is provided with a fixed contact 141a and three moving contacts, below is called the first moving contact 142a, the second moving contact 143a and the 3rd moving contact 144a; The second sub-switch 14b is provided with a fixed contact 141b and two moving contacts, is respectively the first moving contact 142b and the second moving contact 143b.Wherein the 3rd moving contact 144a of the first sub-switch is connected with first end of dimmer switch 16, and second end of dimmer switch 16 links to each other with the output o13 of dimmer, and controller 13 links to each other with the 3rd end of dimmer switch 16.The first moving contact 142a of the first sub-switch 14a in the operating state switch links to each other with the fixed contact 141b of the second sub-switch, and the 3rd moving contact 144a of the first sub-switch links to each other with the first moving contact 142b of the second sub-switch.Second moving contact 143a of the first sub-switch and the second moving contact 143b of the second sub-switch are unsettled.
Like this, when the first sub-switch 14a of operating state switch 14 contacts the first moving contact 142a and the second sub-switch 14b and contacts the first moving contact 142b, dimmer 1 is operated in the brightness settings state, brightness settings device 11 in the dimmer 1, brightness detector 12 and controller 13 carry out work according to function mentioned above, realize that self brightness to LED automatically adjusts according to ambient brightness.
When the first sub-switch 14a of operating state switch 14 contacts the 3rd moving contact 144a and the second sub-switch 14b and contacts the second moving contact 143b, a road and input i12 that brightness settings device 11, brightness detector 12 and controller 13 form disconnect, make brightness settings device 11, brightness detector 12 and controller 13 not work, and the two ends of LED driving power 2 are electrically connected with AC power 2 foundation, and do not change the drive current that exports LED 3 to, make LED 3 be operated in the state of uncontrollable output maximum drive current.
When the first sub-switch 14a of operating state switch 14 touches the second moving contact 143a, one end of brightness settings device 11, brightness detector 12 and controller 13 and LED driving power 2 all disconnects with AC power, LED driving power 2 this moment outside output driving currents, LED 3 extinguishes.
Embodiment five
In Fig. 4, controller 13 in the dimmer 1 otherwise self-powered in (for example battery etc.), in the middle of the LED driving power, obtain power supply, but the latter's supply voltage is less, in order to make controller 13 can obtain power supply signal more easily, as shown in Figure 5, the difference of the dimmer among dimmer in the present embodiment and the embodiment four only is: increase by an end at controller 13, and an end that is not connected the input i12 of dimmer in an end that should increase and the AC power 4 connects, in practice, the end of the input i12 that does not connect dimmer 1 of AC power 4 can be zero line side, and the end of the input i12 of connection dimmer 1 can be the live wire end.Like this, when dimmer 1 was operated in the brightness settings state, controller 1 can directly obtain power supply by AC power 4.
Embodiment six
The electric current of the dimmer output that above-mentioned each embodiment provides is adjusted signal and also will be exported outside LED driving power to, so that the LED driving power changes the drive current that exports LED to, in practice, also the LED driving power can be encapsulated in the dimmer, and dimmer is provided with two inputs and two outputs, during use, two inputs are connected on the two ends of current and power supply respectively, two inputs are connected on the two ends of LED respectively, the LED dimmer can directly change the brightness of LED, and installation and use are all very convenient.Below be out of shape the scheme that obtains with the dimmer among the embodiment one and describe, Fig. 6 shows this dimmer, as shown in Figure 6, difference among this dimmer 1 and the embodiment is, also comprise built-in LED driving power 18, the effect of the LED driving power 2 among the effect of this LED driving power 18 and the embodiment one and and dimmer in the annexation of other devices all be identical, repeat no more here.Only describe the external interface setting of dimmer herein in detail, dimmer is provided with two input interface i11 and i13, and input interface i11 is connected with operating state switch 14, and input port i13 directly connects an input of LED driving power 2.And dimmer also is provided with two output port o14 and o15, and two output port o14 and o15 are connected on the two ends of LED respectively.In addition, controller 13 also can increase an end, and an end that should increase is connected with the input i12 of dimmer.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (8)
1. LED dimmer, it is characterized in that, the brightness settings device, brightness detector and the controller that comprise the target brightness value that is used to preestablish irradiation area, the output of described brightness settings device and brightness detector links to each other with the input of controller, when the LED dimmer was in the brightness settings state, the public input of described brightness settings device and brightness detector was realized being electrically connected with the input of described dimmer.
2. dimmer according to claim 1, it is characterized in that, described LED dimmer also comprises an operating state switch, described operating state switch comprises the first sub-switch and the second sub-switch, the fixed contact of the described first sub-switch is connected with the input of described dimmer, first moving contact of the described first sub-switch is connected with the fixed contact of the second sub-switch, first moving contact of the second sub-switch is connected with the 3rd moving contact of the first sub-switch, and second moving contact of the first sub-switch and second moving contact of the second sub-switch are unsettled;
The fixed contact of the second sub-switch also links to each other with the common port of described brightness settings device and brightness detector, and the 3rd moving contact of the described first sub-switch links to each other with a power input of LED driving power;
When the first sub-switch contacted its first moving contact and the second sub-switch and contacts its first moving contact, described dimmer was in the brightness settings state.
3. dimmer according to claim 1, it is characterized in that, described LED dimmer also comprises operating state switch and manual regulating device, described operating state switch comprises the first sub-switch and the second sub-switch, the fixed contact of the described first sub-switch is connected with the input of described dimmer, first moving contact of the described first sub-switch is connected with the fixed contact of the second sub-switch, first moving contact of the second sub-switch is connected with the 3rd moving contact of the first sub-switch, and second moving contact of the first sub-switch and second moving contact of the second sub-switch are unsettled;
The fixed contact of the described second sub-switch also links to each other with the common port of described brightness settings device and brightness detector, the 3rd moving contact of the described first sub-switch links to each other with a power input of LED driving power by described manual regulating device, and described manual regulating device is also exported manual brightness regulated signal to described controller;
When the first sub-switch contacted its first moving contact and the second sub-switch and contacts its first moving contact, described dimmer was in the brightness settings state;
When the first sub-switch contacts the 3rd moving contact and the second sub-switch and contacts second moving contact, described dimmer is in manual set condition, this moment, described manual regulating device was exported manual brightness regulated signal to controller, made controller according to manual brightness regulated signal output current conditioning signal.
4. dimmer according to claim 1, it is characterized in that, described LED dimmer also comprises a dimmer switch, described controller is adjusted signal by described dimmer switch to the power input output current of described LED driving power, and changes the copped wave phase angle that described electric current is adjusted signal by described dimmer switch; Described controller is adjusted signal to the electric current of the drive current desired value of the reflection LED of LED driving power output and is specially: the electric current with copped wave phase angle corresponding with the drive current desired value of described LED is adjusted signal.
5. dimmer according to claim 4, it is characterized in that, described LED dimmer also comprises an operating state switch, described operating state switch comprises the first sub-switch and the second sub-switch, the fixed contact of the described first sub-switch is connected with the input of described dimmer, first moving contact of the described first sub-switch is connected with the fixed contact of the second sub-switch, first moving contact of the second sub-switch is connected with the 3rd moving contact of the first sub-switch, and second moving contact of the first sub-switch and second moving contact of the second sub-switch are unsettled;
The fixed contact of the second sub-switch also links to each other with the common port of described brightness settings device and brightness detector, and the 3rd moving contact of the described first sub-switch links to each other with a power input of LED driving power;
The 3rd moving contact of the first sub-switch is connected with first end of described dimmer switch, and second end of dimmer switch links to each other with a power input of LED driving power;
Described controller is connected with the 3rd end of described dimmer switch;
When the first sub-switch contacted its first moving contact and the second sub-switch and contacts its first moving contact, described dimmer was in the brightness settings state.
6. according to any described dimmer in the claim 1 to 5, it is characterized in that described LED driving power is arranged in the described LED dimmer.
7. according to any described dimmer in the claim 1 to 5, it is characterized in that described controller also comprises an input, and with AC power in be not connected the operating state switch of dimmer an end connect.
8. dimmer according to claim 6 is characterized in that, described controller also comprises an input, and with AC power in be not connected the operating state switch of dimmer an end connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020215838XU CN201830496U (en) | 2010-06-02 | 2010-06-02 | Light emitting diode (LED) dimmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020215838XU CN201830496U (en) | 2010-06-02 | 2010-06-02 | Light emitting diode (LED) dimmer |
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| Publication Number | Publication Date |
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| CN201830496U true CN201830496U (en) | 2011-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020215838XU Expired - Fee Related CN201830496U (en) | 2010-06-02 | 2010-06-02 | Light emitting diode (LED) dimmer |
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| CN (1) | CN201830496U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103369784A (en) * | 2012-03-30 | 2013-10-23 | 朗捷科技股份有限公司 | Lighting device with automatic constant lighting brightness effect and lighting brightness constant method |
| CN104122847A (en) * | 2013-04-24 | 2014-10-29 | 东林科技股份有限公司 | Method for transmitting signal by using power waveform |
| CN104486889A (en) * | 2014-12-26 | 2015-04-01 | 深圳万润科技股份有限公司 | Photosensitive LED lamp and control method |
| CN106231756A (en) * | 2016-08-25 | 2016-12-14 | 欧普照明股份有限公司 | Means of illumination and illuminator |
| CN109545144A (en) * | 2018-11-27 | 2019-03-29 | 武汉华星光电半导体显示技术有限公司 | A kind of luminance regulating method and device of display panel |
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2010
- 2010-06-02 CN CN201020215838XU patent/CN201830496U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103369784A (en) * | 2012-03-30 | 2013-10-23 | 朗捷科技股份有限公司 | Lighting device with automatic constant lighting brightness effect and lighting brightness constant method |
| CN104122847A (en) * | 2013-04-24 | 2014-10-29 | 东林科技股份有限公司 | Method for transmitting signal by using power waveform |
| CN104486889A (en) * | 2014-12-26 | 2015-04-01 | 深圳万润科技股份有限公司 | Photosensitive LED lamp and control method |
| CN104486889B (en) * | 2014-12-26 | 2017-05-03 | 深圳万润科技股份有限公司 | Control method of photosensitive LED lamp |
| CN106231756A (en) * | 2016-08-25 | 2016-12-14 | 欧普照明股份有限公司 | Means of illumination and illuminator |
| CN106231756B (en) * | 2016-08-25 | 2019-07-19 | 欧普照明股份有限公司 | Means of illumination and lighting device |
| CN109545144A (en) * | 2018-11-27 | 2019-03-29 | 武汉华星光电半导体显示技术有限公司 | A kind of luminance regulating method and device of display panel |
| US11302250B2 (en) | 2018-11-27 | 2022-04-12 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Method and device for luminance adjustment for display panel |
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