CA2558757A1 - A reversible dimmer device of gas discharge lamps and the control method for light adjusting thereof - Google Patents
A reversible dimmer device of gas discharge lamps and the control method for light adjusting thereof Download PDFInfo
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- CA2558757A1 CA2558757A1 CA002558757A CA2558757A CA2558757A1 CA 2558757 A1 CA2558757 A1 CA 2558757A1 CA 002558757 A CA002558757 A CA 002558757A CA 2558757 A CA2558757 A CA 2558757A CA 2558757 A1 CA2558757 A1 CA 2558757A1
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- 230000002441 reversible effect Effects 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000009471 action Effects 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract 2
- 238000001514 detection method Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims 1
- 238000004890 malting Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/39—Controlling the intensity of light continuously
- H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
- H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
- H05B41/3925—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by frequency variation
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/24—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
- H05B47/185—Controlling the light source by remote control via power line carrier transmission
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- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A reversible dimmer device of gas discharge lamp and a control method for tight adjusting thereof arc proposed, in which a power switch on the wall or on an appliance is used to control actions of at least of a gas discharge lamp.
When the power switch is turned on, a power signal is provided to drive the gas discharge lamp to produce a stable light source. The power switch is then fast pressed to make sure the times and timing of off-on switching so that a logic control circuit can output a logic control command. A frequency modulation control circuit is then used to adjust a power parameter according to the logic control command so that a variable frequency resonance drive circuit can vary the drive frequency of the power signal based on the power parameter. The gas discharge lamp can thus produce different luminance or different luminous effects.
When the power switch is turned on, a power signal is provided to drive the gas discharge lamp to produce a stable light source. The power switch is then fast pressed to make sure the times and timing of off-on switching so that a logic control circuit can output a logic control command. A frequency modulation control circuit is then used to adjust a power parameter according to the logic control command so that a variable frequency resonance drive circuit can vary the drive frequency of the power signal based on the power parameter. The gas discharge lamp can thus produce different luminance or different luminous effects.
Description
A RE''VERSIBLE D>rIVIMER DEVICE U~' GAS DISCHARGE
LA1V~S AND THE CONTROL METHOD FOR LIGHT
B$ckground of the invention ! .Field of the invention The present invention relates to a reversible dimmer device more particularly relates to such a dimmer device used for at least one gas discharge lamp and a control method for light adjusting thereof, which can make use of the original power switch to directly adjust light in a smooth stage.
LA1V~S AND THE CONTROL METHOD FOR LIGHT
B$ckground of the invention ! .Field of the invention The present invention relates to a reversible dimmer device more particularly relates to such a dimmer device used for at least one gas discharge lamp and a control method for light adjusting thereof, which can make use of the original power switch to directly adjust light in a smooth stage.
2. Description of Related art Along with promotion of living standard, the environmental design of home or company tends to be integral, convenient, and practical, among which the design of lighting plays an important role. Because gas discharge tamps such as fluorescent lamps have the advantages of long lifetime, power saving, low failure rate, high luminous quality, and high luminous etlicieney, they have became the mainstream in the market.
A fluorescent lamp comprises a fluorescent lamp tube and an electronic ballast. A resonance circuit in the electronic ballast is used to generate an AC
signal with a specific frequency for turning on the fluorescent lamp tube.
This kind of fluorescent lamp tube, however, has only two operating modes: on and olr On the other hand, the user can cantral the conventional incandescent light bulb to emit light with luminance of different levels through changing the input power. Therefore, for people appreciating the life quality, the gas discharge lamps cannot fully meet various demands in dit~erent regions or at different times, and cannot further save power.
A common fluorescent lamp tube used indoors is controlled by a switch on the wall, and a desk lamp is controlled by a switch on an appliance. Although the design tit fluorescent lamp tube with a smooth-stage light adjustment function has emerged, it is necessary to change the design and structure of the whole lamp or even to rearrange the wiring. This engineering is cumbersome for most users. Besides, this extra engineering will easily generate waste, hence not meeting the requirement of environmental protection. The materials and manpower required by this engineering will also increase the cost. In i 0 consideration of the above problems, the present invention proposes a reversible dimmer device of gas discharge lamp and a control method for light adjusting thereof, in which an original switch on the wall or on an appliance is used to directly carry out smooth-stage liiht adjustment, thereby accomplishing the convenience and flexibility in use.
Summary of the invention An object of the present invention is to provide a reversible dimmer device of gas discharge lamp and a control method for light adjusting thereof, in which a power switch on the wall, on an appliance, on a control box, or on a console is used to switch a control command such as a tight adjustment command or a ?0 mode selection command so as to adjust the luminance or the luminous mode of a gas discharge lamp in a smooth-stage way, thereby accomplishing practicability and convenience in use.
Another object of the present invention is to provide a reversible dimmer device of gas discharge lamp and a control method for light adjusting thereof, which accomplishes a wide range of application and flexible use by means of z standalone adjustment, block adjustment, or group adjustment.
To achieve the above objects, the present invention provides a reversible dimmer device of gas discharge lamp, which comprises a rectifier, a power factor correction circuit, a variable frequency resonance drive circuit, a detection circuit, a logic control circuit, a frequency modulation control circuit, and a charping/discharging controller. The rectifier is connected to a power switch to rectify a power input from the power switch. The power factor correction circuit performs power factor correction and boost to the rectified power. The variable frequency resonance drive circuit produces an l1C signal l0 with a certain frequency accarding to the boosted power signal to drive the gas discharge lamp to function. The detection circuit is connected to the rectifier to detect the state of the power switch. The logic control circuit outputs a control command according to the times and timing of ofl;on switching of the power switch in a short time. The frequency modulation contml circuit adjusts a I S power parameter according to the control command so that the variable frequency resonance drive circuit can vary the drive frequency of the power siyal based on the power parameter so as to adjust the luminous made of the gas discharge lamp. The charg,ingldischarging controller provides a su~cient power for the variable frequency resonance drive circuit from a power storage 20 device during switching of the power switch to prevent the gas discharge lamp from glittering due to temporary cutofFofpower.
Besides, the present invention also provides a control method for light adjusting of gas discharge lamp, which comprises the steps of: turning on a power switch to provide a power signal so as to drive at least one gas discharge 25 Lamp to produce a stable light source; fast pressing said power switch if the illuminance is to be changed; outputting a logic control command according to the times and timing of off on switching of the power switch; and modulating a power parameter at the gas discharge lamp according to the control command to change a drive frequency of the power signal so as to generate variation of luminance of the gas discharge Tamp.
Brief description of the drawings:
The various objects arid advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which:
Fig. 1 is a structure diagram of a reversible dimmer device of the present invention;
Fig. 2 is a structure diagram of a reversible dimmer device of the present invention with an additional e7cternal light adjustment component;
Fig. 3 is a flowchart of the control method for light adjusting of the present l5 invention; and Fig. 4 is a structure diagram according to another embodiment of the present invention.
Detailed description of the preferred embodiments The present invention provides a reversible dimmer device of gas ~U discharge lamp and a control method for light adjusting thereof, in which a power switch on the wall, on an appliance, on a control box, or on a console is used to switch a control command such as a tight adjustment command or a mode selection command so as to adjust the luminance or the luminous mode of at least one gas discharge lamp in a smooth-stage way. The gas discharge 25 lamp can be a fluorescent lamp or another discharge lamp. Rearrangement of wiring is not required. The present invention can provide more convenient selection far users.
As shown in 1~ig. 1, a reversible dimmer contra( device 1 makes use of a power switch 2 to control actions of at least one gas discharge lamp 3, After the power switch is turned on, the gas discharge tamp 3 keeps in a luminous mode of the previous adjustment.
An EM1 reduction circuit 101, a rectifier 102, a power factor correction circuit 103, and a variable frequency resonance drive circuit 104 are connected in turn between the power switch 2 and the gas discharge lamp 3. The EMI
I U reduction circuit is used to prevent the power from being interfered by external EM1 or interfering an outside power. The rectifier 102 rectifies a power signal.
The power factor correction circuit 1.03 performs power factor correction to the power signal and boasts the power silnai to a predetermined voltage. The variable frequency resonance drive circuit then produces an AC signs! with a 1 S certain frequency according to the boasted power signal to drive the gas discharge lamp 3 to emit light.
The reversible dimmer device 1 further comprises a detection circuit 105 connected to the rectifier 102. The detection circuit 105 detects the state of the power switch 10z according to the sent out power signal to know the times and ZO timing of off on switching of the power switch 2. A logic control circuit 106 is further connected to the detection circuit 105. The logic control circuit 106 acquires the times of high and low logic signals corresponding to the power signal according to the times of off on switching of the power switch 2 in a short time to output a voltage or logic level signal for controlling frequency, i.e., 25 a logic control command. The logic control command is used as a light adjustment command for light adjustment control or a mode selection command for changing the luminous made. The logic control circuit 106 is connected to a frequency modulation control circuit 10'l, which adjusts a power parameter (e,g" the magnitude of current, voltage, frequency, or period) of the gas discharge lamp 3 according to the logic contml command so that the variable frequency resonance drive circuit 104 can change the drive frequency according to the power parameter to adjust the luminous mode of the gas discharge lamp 3, In other words, the present invention makes use of the variation of frequency to adjust the output of power, with the frequency proportional to the output. A charging/discharging controller 10$ is connected to the logic control circuit 1 U6. The ehargingldischarging controller 1 U6 provides a sufl'icient power far the variable frequency resonance drive circuit 104 from a power storage device 109 during switching of the power switch 2 to prevent the gas discharge lamp 3 from Tittering due to temporary cutoff of I S power. At the initiaE stage when the power switch 2 is turned on, the logic control circuit 106 will fcrst temporarily cut off the charl;ing/discharging c;ontrollcr 108. After the power signal is provided to the gas discharge lamp 3 to turned is an, the chargingldischarging controller 108 is then switched an to charge the power storage device 109.
Of course, in order to avoid the situation of overcurrent or overload of circuit, an overload protection circuit 110 is further connected between the logic control circuit 106 and the gas discharge ltunp 3. When there is an abnormal situxtian of the reversible dimmer device I or the gas discharge lamp 3, the logic control circuit 106 can directly cut off the variable frequency resonance drive circuit 104 to stop output.
When the detection circuit 105 detects an of~-on switching generated when the power switch 2 is pressed ante, the logic control circuit l Ob immediately drives the variable frequency resonance drive circuit 104 via the frequency modulation control circuit 107 to vary the drive frequency of the power signal based on the power parameter so as to generate variation of luminance of the gas discharge lamp 3 (i.e., the gas discharge lamp 3 automatically adjusts itself from dim to bright state or vice versa) until said power switch 2 is pressed once more or the brightestldimtnest state of the gas discharge lamp 3 is reached.
Moreover, when the power switch 2 is continually pressed twice in succession to generate two off on switching, the logic control circuit 106 will drive the gas discharge lamp 3 to adjust light in the reverse direction.
In addition to generating the control command directly via the power switch 2, at least an external light adjustment component 111 can be used to generate the control command. As shown in Fig. 2, the external light adjustment I S component 111 is connected to the logic control circuit 106 to drive the logic control circuit l 06 to produce a corresponding control command, The external light adjustment component 111 can be a remote receiver, a rocker switch, a human detector, a daylight detector, or a variable resistor. When the external light adjustment component 111 is a remote receiver or a rocker switch, it can ~0 jointly control the gas discharge lamp 3 with the power switch 2 so that a user can select the power switch 2 or the remote receiver (or the rocker switch) to adjust the luminance of the gas discharge lamp 3.
Fig, 3 is a flowchart of a light adjustment control method of the present invention. The light adjustment control method makes use of an original power 25 switch on the wall, on an appliance, on a control box, or on a console to control actions of at least a gas discharge lamp. Reference is made to lr lg. 3 as well as Fig. l , The light adjustment control method comprises the following steps.
First, the power switch 2 is turned on to provide a power signal for driving the gas discharge lamp 3 to produce a stable light source, and a power storage device is then used to store a standby power (when the power is just turned on, the charging/discharging controller will be temporarily cut off so that the gas discharge lamp can be immediately turned on and produce a stable light source) {Step S 10). Next, the detection circuit 105 is used to detect whether the power switch 2 is o~ {Step S 12). If the power switch 2 keeps on, Step S 12 is repeated;
t 0 if the power switch 2 is otle, the logic control circuit 106 determines whether the off time of the power switch 2 is less than a predetermined time T, where T ~
0.6 sec (Step S14). if the off'time is less than or equal to O.b sec, Step S16 is performed; if the off time exceeds 0.6 sec, the coupling between the power storage device 109 and the variable frequency resonance drive circuit 104 is cut l5 off to shut the standby power so as to immediately turn off the gas discharge lamp 3, representing the power switch 2 is in the oil State (Step S24).
The above predetermined time T S 0.6 sec is adopted in a preferred embodiment of the present invention. The predetermined time T can also be set to be less than or equal to 1 sec (i.e., T S 1 sec).
2U If the off time is less than or equal to O.b sec, the logic control circuit acquires high and low logic signals corresponding to the off and an states of power (Step S 16). The logic control circuit 106 then outputs a control command according to the logic signal (Step S 1 R). The control command is a voltage or logic level signal capable of controlling frequency. Next, the 25 frequency modulation control circuit 107 modulates a relevant power parameter s (e.g., the magnitude of current, voltage, frequency, or period) according to the control command (Step S20). Finally, the variable frequency resonance drive circuit 104 changes the drive frequency according to the power parameter to drive the gas discharge lamp 3 to produce variations of luminance.
In addition to being connected to the rectifier 102 as shown in Fig. 1, the detection circuit 105 and the logic control circuit 106 can also be connected between the EMI reduction circuit 101 and the rectifier 102, as shown in Fig, 4, the state of the power switch 2 can be directly detected according to the power signal processed by the BMI reduction circuit 102, The principles and actions ~ 0 of the other components are the same as in Fig, 1 and thus won't be further described.
The present invention will be further exemplified below with some examples, When the gas discharge lamp is adjusted by the power switch, the off on switching of the power switch in a short time is used as a light adjustment command:
( 1 ) When the gas discharge lamp is of the brightest luminance and the off on switching occurs once, the gas discharge lamp adjusts itself Pram the brightest to the dimmest state unless there is an oil=on signal again.
(2) Tf the o~-on switching occurs once again before the gas discharge lamp changes from the brightest to the dimmest state, the light adjustment action stops, and the gas discharge lamp keeps at the present luminance.
ZS (3) If the off on switching occurs once again before the gas discharge lamp changes from the brightest to the dimmest state, the light adjustment action stops. If the adjustment goes too far and a reverse adjustment is required, the power switch is pressed twice in succession to drive the gas discharge lamp to adjust itself from dim to S bright state. When the desired luminance is reached, the power switch is pressed once again to keep the gas discharge lamp at the present luminance, (~l) When the gas discharge lamp is of the dimmest luminance arid the ot~=an switching occurs once, the gas discharge lamp adjusts itself from the dimmest to the brightest state unless there is an off an signal again.
(5) Tf the off on switching occurs once again before the gas discharge lamp changes from the dimmest to the brightest state, the light adjustment action stops, and the gas discharge lamp keeps at the present luminance.
(f) If the off on switching clccurs once again before the gas discharge lamp changes from the dimmest to the brightest state, the light adjustment action stops. If the adjustment goes too far and a reverse adjustment is required, the power switch is pressed twice in succession to drive the gas discharge lamp to adjust itself from bright to dim state. When the desired luminance is reached, the power switch is pressed once abain to keep the gas discharge lamp at the present luminance.
When the power switch is used to select a different luminous mode of the gas discharge lamp, the off on switching of tile power switch in a short time is to used as a made selection command to select different chrominance or different luminance:
(1) The ot~ on switching of the power switch is used as a command far selecting different luminous modes.
{2) When the power is initially delivered, the reversible dimmer device is set in a preset luminous made.
(3) When the reversible dimmer device is in the preset luminous made and the off on switching occurs once, the reversible dimmer device is switched to the next luminous made, When the reversible dimmer device ! 0 is in a certain luminous made and the off an switching occurs once, the reversible dimmer device is switched to the next luminous made. When the reversible dimmer device is in the last luminous made and the ot~ on switching ot:curs ante, the reversible dimmer device is switched to the preset luminous mode. Moreover, different orders of mode alternation can be selected to have variation for each round so as to enhance the variation of color and luminance. 'his mode can also apply to the situation of KTV or concert.
Furthermore, the present invention can accomplish a wide range of application and flexible use by mean;; of standalone adjustment, black adjustment, or group adjustment. For block adjustment, the reversible dimmer device of the present invention controls one of the gas discharge lamps as a light adjuster, and wiredly or wirelessly drives the other gas discharge lamps to function simultaneously far light adjustment. For ~aup adjustment, the light adjustment control manner is the same as that of standalone adjustment described above, Tp sum up, the present invention provides a reversible dimmer device of gas discharge lamp and a light adjustment control method thereof, in which a power switch on the wall, on an appliance, on a controt box, or on a console is used to switch a control command such as a light adjustment command or a mode selection command so as to adjust the luminance or the luminous mode of a gas discharge lamp in a multi-stage way, thereby accomplishing practicability and convenience in use.
Although the present invention has been described with reference to the preferred embodiment thereof, it will be understood that the invention is not 1 U limited to the details thereof. Various substitutions and modifications have been suggested in the foregoing description, and other will occur to those of ordinary skill in the art, Therefore, all such substitutions and modifications are intended to lx embraced within the scope of the invention as defned in the appended Claims.
~z
A fluorescent lamp comprises a fluorescent lamp tube and an electronic ballast. A resonance circuit in the electronic ballast is used to generate an AC
signal with a specific frequency for turning on the fluorescent lamp tube.
This kind of fluorescent lamp tube, however, has only two operating modes: on and olr On the other hand, the user can cantral the conventional incandescent light bulb to emit light with luminance of different levels through changing the input power. Therefore, for people appreciating the life quality, the gas discharge lamps cannot fully meet various demands in dit~erent regions or at different times, and cannot further save power.
A common fluorescent lamp tube used indoors is controlled by a switch on the wall, and a desk lamp is controlled by a switch on an appliance. Although the design tit fluorescent lamp tube with a smooth-stage light adjustment function has emerged, it is necessary to change the design and structure of the whole lamp or even to rearrange the wiring. This engineering is cumbersome for most users. Besides, this extra engineering will easily generate waste, hence not meeting the requirement of environmental protection. The materials and manpower required by this engineering will also increase the cost. In i 0 consideration of the above problems, the present invention proposes a reversible dimmer device of gas discharge lamp and a control method for light adjusting thereof, in which an original switch on the wall or on an appliance is used to directly carry out smooth-stage liiht adjustment, thereby accomplishing the convenience and flexibility in use.
Summary of the invention An object of the present invention is to provide a reversible dimmer device of gas discharge lamp and a control method for light adjusting thereof, in which a power switch on the wall, on an appliance, on a control box, or on a console is used to switch a control command such as a tight adjustment command or a ?0 mode selection command so as to adjust the luminance or the luminous mode of a gas discharge lamp in a smooth-stage way, thereby accomplishing practicability and convenience in use.
Another object of the present invention is to provide a reversible dimmer device of gas discharge lamp and a control method for light adjusting thereof, which accomplishes a wide range of application and flexible use by means of z standalone adjustment, block adjustment, or group adjustment.
To achieve the above objects, the present invention provides a reversible dimmer device of gas discharge lamp, which comprises a rectifier, a power factor correction circuit, a variable frequency resonance drive circuit, a detection circuit, a logic control circuit, a frequency modulation control circuit, and a charping/discharging controller. The rectifier is connected to a power switch to rectify a power input from the power switch. The power factor correction circuit performs power factor correction and boost to the rectified power. The variable frequency resonance drive circuit produces an l1C signal l0 with a certain frequency accarding to the boosted power signal to drive the gas discharge lamp to function. The detection circuit is connected to the rectifier to detect the state of the power switch. The logic control circuit outputs a control command according to the times and timing of ofl;on switching of the power switch in a short time. The frequency modulation contml circuit adjusts a I S power parameter according to the control command so that the variable frequency resonance drive circuit can vary the drive frequency of the power siyal based on the power parameter so as to adjust the luminous made of the gas discharge lamp. The charg,ingldischarging controller provides a su~cient power for the variable frequency resonance drive circuit from a power storage 20 device during switching of the power switch to prevent the gas discharge lamp from glittering due to temporary cutofFofpower.
Besides, the present invention also provides a control method for light adjusting of gas discharge lamp, which comprises the steps of: turning on a power switch to provide a power signal so as to drive at least one gas discharge 25 Lamp to produce a stable light source; fast pressing said power switch if the illuminance is to be changed; outputting a logic control command according to the times and timing of off on switching of the power switch; and modulating a power parameter at the gas discharge lamp according to the control command to change a drive frequency of the power signal so as to generate variation of luminance of the gas discharge Tamp.
Brief description of the drawings:
The various objects arid advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which:
Fig. 1 is a structure diagram of a reversible dimmer device of the present invention;
Fig. 2 is a structure diagram of a reversible dimmer device of the present invention with an additional e7cternal light adjustment component;
Fig. 3 is a flowchart of the control method for light adjusting of the present l5 invention; and Fig. 4 is a structure diagram according to another embodiment of the present invention.
Detailed description of the preferred embodiments The present invention provides a reversible dimmer device of gas ~U discharge lamp and a control method for light adjusting thereof, in which a power switch on the wall, on an appliance, on a control box, or on a console is used to switch a control command such as a tight adjustment command or a mode selection command so as to adjust the luminance or the luminous mode of at least one gas discharge lamp in a smooth-stage way. The gas discharge 25 lamp can be a fluorescent lamp or another discharge lamp. Rearrangement of wiring is not required. The present invention can provide more convenient selection far users.
As shown in 1~ig. 1, a reversible dimmer contra( device 1 makes use of a power switch 2 to control actions of at least one gas discharge lamp 3, After the power switch is turned on, the gas discharge tamp 3 keeps in a luminous mode of the previous adjustment.
An EM1 reduction circuit 101, a rectifier 102, a power factor correction circuit 103, and a variable frequency resonance drive circuit 104 are connected in turn between the power switch 2 and the gas discharge lamp 3. The EMI
I U reduction circuit is used to prevent the power from being interfered by external EM1 or interfering an outside power. The rectifier 102 rectifies a power signal.
The power factor correction circuit 1.03 performs power factor correction to the power signal and boasts the power silnai to a predetermined voltage. The variable frequency resonance drive circuit then produces an AC signs! with a 1 S certain frequency according to the boasted power signal to drive the gas discharge lamp 3 to emit light.
The reversible dimmer device 1 further comprises a detection circuit 105 connected to the rectifier 102. The detection circuit 105 detects the state of the power switch 10z according to the sent out power signal to know the times and ZO timing of off on switching of the power switch 2. A logic control circuit 106 is further connected to the detection circuit 105. The logic control circuit 106 acquires the times of high and low logic signals corresponding to the power signal according to the times of off on switching of the power switch 2 in a short time to output a voltage or logic level signal for controlling frequency, i.e., 25 a logic control command. The logic control command is used as a light adjustment command for light adjustment control or a mode selection command for changing the luminous made. The logic control circuit 106 is connected to a frequency modulation control circuit 10'l, which adjusts a power parameter (e,g" the magnitude of current, voltage, frequency, or period) of the gas discharge lamp 3 according to the logic contml command so that the variable frequency resonance drive circuit 104 can change the drive frequency according to the power parameter to adjust the luminous mode of the gas discharge lamp 3, In other words, the present invention makes use of the variation of frequency to adjust the output of power, with the frequency proportional to the output. A charging/discharging controller 10$ is connected to the logic control circuit 1 U6. The ehargingldischarging controller 1 U6 provides a sufl'icient power far the variable frequency resonance drive circuit 104 from a power storage device 109 during switching of the power switch 2 to prevent the gas discharge lamp 3 from Tittering due to temporary cutoff of I S power. At the initiaE stage when the power switch 2 is turned on, the logic control circuit 106 will fcrst temporarily cut off the charl;ing/discharging c;ontrollcr 108. After the power signal is provided to the gas discharge lamp 3 to turned is an, the chargingldischarging controller 108 is then switched an to charge the power storage device 109.
Of course, in order to avoid the situation of overcurrent or overload of circuit, an overload protection circuit 110 is further connected between the logic control circuit 106 and the gas discharge ltunp 3. When there is an abnormal situxtian of the reversible dimmer device I or the gas discharge lamp 3, the logic control circuit 106 can directly cut off the variable frequency resonance drive circuit 104 to stop output.
When the detection circuit 105 detects an of~-on switching generated when the power switch 2 is pressed ante, the logic control circuit l Ob immediately drives the variable frequency resonance drive circuit 104 via the frequency modulation control circuit 107 to vary the drive frequency of the power signal based on the power parameter so as to generate variation of luminance of the gas discharge lamp 3 (i.e., the gas discharge lamp 3 automatically adjusts itself from dim to bright state or vice versa) until said power switch 2 is pressed once more or the brightestldimtnest state of the gas discharge lamp 3 is reached.
Moreover, when the power switch 2 is continually pressed twice in succession to generate two off on switching, the logic control circuit 106 will drive the gas discharge lamp 3 to adjust light in the reverse direction.
In addition to generating the control command directly via the power switch 2, at least an external light adjustment component 111 can be used to generate the control command. As shown in Fig. 2, the external light adjustment I S component 111 is connected to the logic control circuit 106 to drive the logic control circuit l 06 to produce a corresponding control command, The external light adjustment component 111 can be a remote receiver, a rocker switch, a human detector, a daylight detector, or a variable resistor. When the external light adjustment component 111 is a remote receiver or a rocker switch, it can ~0 jointly control the gas discharge lamp 3 with the power switch 2 so that a user can select the power switch 2 or the remote receiver (or the rocker switch) to adjust the luminance of the gas discharge lamp 3.
Fig, 3 is a flowchart of a light adjustment control method of the present invention. The light adjustment control method makes use of an original power 25 switch on the wall, on an appliance, on a control box, or on a console to control actions of at least a gas discharge lamp. Reference is made to lr lg. 3 as well as Fig. l , The light adjustment control method comprises the following steps.
First, the power switch 2 is turned on to provide a power signal for driving the gas discharge lamp 3 to produce a stable light source, and a power storage device is then used to store a standby power (when the power is just turned on, the charging/discharging controller will be temporarily cut off so that the gas discharge lamp can be immediately turned on and produce a stable light source) {Step S 10). Next, the detection circuit 105 is used to detect whether the power switch 2 is o~ {Step S 12). If the power switch 2 keeps on, Step S 12 is repeated;
t 0 if the power switch 2 is otle, the logic control circuit 106 determines whether the off time of the power switch 2 is less than a predetermined time T, where T ~
0.6 sec (Step S14). if the off'time is less than or equal to O.b sec, Step S16 is performed; if the off time exceeds 0.6 sec, the coupling between the power storage device 109 and the variable frequency resonance drive circuit 104 is cut l5 off to shut the standby power so as to immediately turn off the gas discharge lamp 3, representing the power switch 2 is in the oil State (Step S24).
The above predetermined time T S 0.6 sec is adopted in a preferred embodiment of the present invention. The predetermined time T can also be set to be less than or equal to 1 sec (i.e., T S 1 sec).
2U If the off time is less than or equal to O.b sec, the logic control circuit acquires high and low logic signals corresponding to the off and an states of power (Step S 16). The logic control circuit 106 then outputs a control command according to the logic signal (Step S 1 R). The control command is a voltage or logic level signal capable of controlling frequency. Next, the 25 frequency modulation control circuit 107 modulates a relevant power parameter s (e.g., the magnitude of current, voltage, frequency, or period) according to the control command (Step S20). Finally, the variable frequency resonance drive circuit 104 changes the drive frequency according to the power parameter to drive the gas discharge lamp 3 to produce variations of luminance.
In addition to being connected to the rectifier 102 as shown in Fig. 1, the detection circuit 105 and the logic control circuit 106 can also be connected between the EMI reduction circuit 101 and the rectifier 102, as shown in Fig, 4, the state of the power switch 2 can be directly detected according to the power signal processed by the BMI reduction circuit 102, The principles and actions ~ 0 of the other components are the same as in Fig, 1 and thus won't be further described.
The present invention will be further exemplified below with some examples, When the gas discharge lamp is adjusted by the power switch, the off on switching of the power switch in a short time is used as a light adjustment command:
( 1 ) When the gas discharge lamp is of the brightest luminance and the off on switching occurs once, the gas discharge lamp adjusts itself Pram the brightest to the dimmest state unless there is an oil=on signal again.
(2) Tf the o~-on switching occurs once again before the gas discharge lamp changes from the brightest to the dimmest state, the light adjustment action stops, and the gas discharge lamp keeps at the present luminance.
ZS (3) If the off on switching occurs once again before the gas discharge lamp changes from the brightest to the dimmest state, the light adjustment action stops. If the adjustment goes too far and a reverse adjustment is required, the power switch is pressed twice in succession to drive the gas discharge lamp to adjust itself from dim to S bright state. When the desired luminance is reached, the power switch is pressed once again to keep the gas discharge lamp at the present luminance, (~l) When the gas discharge lamp is of the dimmest luminance arid the ot~=an switching occurs once, the gas discharge lamp adjusts itself from the dimmest to the brightest state unless there is an off an signal again.
(5) Tf the off on switching occurs once again before the gas discharge lamp changes from the dimmest to the brightest state, the light adjustment action stops, and the gas discharge lamp keeps at the present luminance.
(f) If the off on switching clccurs once again before the gas discharge lamp changes from the dimmest to the brightest state, the light adjustment action stops. If the adjustment goes too far and a reverse adjustment is required, the power switch is pressed twice in succession to drive the gas discharge lamp to adjust itself from bright to dim state. When the desired luminance is reached, the power switch is pressed once abain to keep the gas discharge lamp at the present luminance.
When the power switch is used to select a different luminous mode of the gas discharge lamp, the off on switching of tile power switch in a short time is to used as a made selection command to select different chrominance or different luminance:
(1) The ot~ on switching of the power switch is used as a command far selecting different luminous modes.
{2) When the power is initially delivered, the reversible dimmer device is set in a preset luminous made.
(3) When the reversible dimmer device is in the preset luminous made and the off on switching occurs once, the reversible dimmer device is switched to the next luminous made, When the reversible dimmer device ! 0 is in a certain luminous made and the off an switching occurs once, the reversible dimmer device is switched to the next luminous made. When the reversible dimmer device is in the last luminous made and the ot~ on switching ot:curs ante, the reversible dimmer device is switched to the preset luminous mode. Moreover, different orders of mode alternation can be selected to have variation for each round so as to enhance the variation of color and luminance. 'his mode can also apply to the situation of KTV or concert.
Furthermore, the present invention can accomplish a wide range of application and flexible use by mean;; of standalone adjustment, black adjustment, or group adjustment. For block adjustment, the reversible dimmer device of the present invention controls one of the gas discharge lamps as a light adjuster, and wiredly or wirelessly drives the other gas discharge lamps to function simultaneously far light adjustment. For ~aup adjustment, the light adjustment control manner is the same as that of standalone adjustment described above, Tp sum up, the present invention provides a reversible dimmer device of gas discharge lamp and a light adjustment control method thereof, in which a power switch on the wall, on an appliance, on a controt box, or on a console is used to switch a control command such as a light adjustment command or a mode selection command so as to adjust the luminance or the luminous mode of a gas discharge lamp in a multi-stage way, thereby accomplishing practicability and convenience in use.
Although the present invention has been described with reference to the preferred embodiment thereof, it will be understood that the invention is not 1 U limited to the details thereof. Various substitutions and modifications have been suggested in the foregoing description, and other will occur to those of ordinary skill in the art, Therefore, all such substitutions and modifications are intended to lx embraced within the scope of the invention as defned in the appended Claims.
~z
Claims (20)
1. A reversible dimmer device of gas discharge lamp making use of at least one power switch to control actions of at least one gas discharge lamp, said reversible dimmer device comprising:
a rectifier connected to said power switch to rectify a power signal input from said power switch;
a power factor correction circuit connected to said rectifier to perform power factor correction and boost to said power signal;
a variable frequency resonance drive circuit for producing an AC signal with a certain frequency according to said power signal to drive said gas discharge lamp;
a detection circuit connected to said rectifier to detect the state of said power switch;
a logic control circuit connected to said detection circuit to output a control command according to the times and timing of off-on switching of said power switch in a short period;
a frequency modulation control circuit for adjusting a power parameter according to said control command so that said variable frequency resonance drive circuit can vary a drive frequency of said power signal based on said power parameter so as to adjust the luminous mode of said gas discharge lamp; and a charging/discharging controller connected to said logic control circuit, said charging/discharging controller providing a sufficient power for said variable frequency resonance drive circuit from a power storage device during switching of said power switch.
a rectifier connected to said power switch to rectify a power signal input from said power switch;
a power factor correction circuit connected to said rectifier to perform power factor correction and boost to said power signal;
a variable frequency resonance drive circuit for producing an AC signal with a certain frequency according to said power signal to drive said gas discharge lamp;
a detection circuit connected to said rectifier to detect the state of said power switch;
a logic control circuit connected to said detection circuit to output a control command according to the times and timing of off-on switching of said power switch in a short period;
a frequency modulation control circuit for adjusting a power parameter according to said control command so that said variable frequency resonance drive circuit can vary a drive frequency of said power signal based on said power parameter so as to adjust the luminous mode of said gas discharge lamp; and a charging/discharging controller connected to said logic control circuit, said charging/discharging controller providing a sufficient power for said variable frequency resonance drive circuit from a power storage device during switching of said power switch.
2. The reversible dimmer device as claimed in claim 1, wherein said gas discharge lamp is in a luminous mode of the previous adjustment after said power switch is turned on, when said detection circuit detects an off on switching generated when said power switch is pressed once, said logic control circuit immediately drives said variable frequency resonance drive circuit via said frequency modulation control circuit to vary the drive frequency of said power signal based on said power parameter so as to generate variation of luminance of said gas discharge tamp until said power switch is pressed once more or the brightest/dimmest state of said gas discharge lamp is reached, and said gas discharge lamp automatically adjusts itself from dim to bright state or vice versa.
3. The reversible dimmer device as claimed in claim 1, wherein an EMI
reduction circuit is further connected between said power switch and said rectifier to prevent said power from being interfered by external EMI or interfering an outside power.
reduction circuit is further connected between said power switch and said rectifier to prevent said power from being interfered by external EMI or interfering an outside power.
4. The reversible dimmer device as claimed in claim 1, wherein said logic control circuit can directly cut off said variable frequency resonance drive circuit to stop output when an abnormal situation occurs.
5. The reversible dimmer device as claimed in claim 1, further comprising an overload protection circuit, wherein said overload protection circuit is connected between said logic control circuit and said gas discharge lamp to prevent overcurrent or overload from damaging components,
6. The reversible dimmer device as claimed in claim 1, wherein at an initial stage when said power switch is turned on, said charging/discharging controller will be temporarily cut off so that said power can activate said gas discharge lamp, and said charging/discharging controller is then switched on to carry out charging.
7. The reversible dimmer device as claimed in claim 1, wherein said logic control circuit acquires the times and timing of high and low logic signals corresponding to the off-on switching of said power to output a voltage or logic level signal whose frequency can 6e controlled.
8. The reversible dimmer device as claimed in claim 1, wherein said power parameter is a magnitude of current, voltage, frequency, or period.
9. The reversible dimmer device as claimed in claim 1, further comprising an external light adjustment component, wherein said external light adjustment component is connected to said logic control circuit to drive said logic control circuit to produce a corresponding control command, and said external light adjustment component can be a remote receiver, a rocker switch, a human detector, a daylight detector, or a variable resistor.
10. The reversible dimmer device as claimed in claim 1, wherein said luminous mode can be of different luminance or different luminous effects.
11. The reversible dimmer device as claimed in claim 1, further comprising a plurality of gas discharge lamps, wherein said reversible dimmer device controls one of said discharge lamps as a light adjuster, and wiredly or wirelessly drives the other of said gas discharge lamps to function simultaneously for light adjustment.
12. A control method for light adjusting of gas discharge lamp making use of a power switch to control actions of at least one gas discharge lamp, by said reversible dimmer device comprising the steps of:
turning on said power switch to provide a power signal so as to drive said gas discharge lamp to produce a stable light source and store a standby power;
detecting whether said power switch is turned on, performing the next step if the answer is yes;
determining whether the off time of said power is less than a predetermined time, cutting off said power and said standby power if the answer is no, performing the next step if the answer is yes;
acquiring a high or low logic signal corresponding to the off or on state of said power;
outputting a control command capable of controlling voltage or logic level according to said logic signal; and modulating a relevant power parameter according to said control command to change a drive frequency of said power signal to generate variation of luminance of said gas discharge lamp.
turning on said power switch to provide a power signal so as to drive said gas discharge lamp to produce a stable light source and store a standby power;
detecting whether said power switch is turned on, performing the next step if the answer is yes;
determining whether the off time of said power is less than a predetermined time, cutting off said power and said standby power if the answer is no, performing the next step if the answer is yes;
acquiring a high or low logic signal corresponding to the off or on state of said power;
outputting a control command capable of controlling voltage or logic level according to said logic signal; and modulating a relevant power parameter according to said control command to change a drive frequency of said power signal to generate variation of luminance of said gas discharge lamp.
13. The control method for light adjusting as claimed in claim 12, wherein said gas discharge lamp is in a luminous mode of the previous adjustment after said power switch is turned on, and said gas discharge lamp automatically adjusts itself from dim to bright state or vice versa.
14. The control method for light adjusting as claimed in claim 12, wherein said predetermined time is less than or equal to 1 sec,
15. The control method for light adjusting as claimed in claim 12, wherein in said step of outputting a control command capable of controlling voltage or logic level according to said logic signal, a logic control circuit is used to acquire the times and timing of the high and low logic signals corresponding to off-on switching of said power so as to output a voltage or logic level
16 signal capable of controlling frequency.
16. The control method for light adjusting as claimed in claim 12, wherein said power parameter is a magnitude of current, voltage, frequency, or period.
16. The control method for light adjusting as claimed in claim 12, wherein said power parameter is a magnitude of current, voltage, frequency, or period.
17. The control method for light adjusting as claimed in claim 12, wherein in said step of outputting a control command capable of controlling voltage or logic level according to said logic signal, at least an external light adjustment component can be directly used to produce a corresponding control command, and said external light adjustment component can be a remote receiver, a rocker switch, a human detector, a daylight detector, or a variable resistor.
18. A control method for light adjusting of gas discharge lamp malting use of at least one power switch to central actions of at least one gas discharge lamp, said light adjustment control method comprising the steps of:
turning on said power switch to provide a power signal so as to drive said gas discharge tamp to produce a stable light source;
fast pressing said power switch to make sure the times of off-on switching so as to output a logic control command; and modulating a relevant power parameter according to said control command to change a drive frequency of said power signal to generate variation of luminance of said gas discharge lamp.
turning on said power switch to provide a power signal so as to drive said gas discharge tamp to produce a stable light source;
fast pressing said power switch to make sure the times of off-on switching so as to output a logic control command; and modulating a relevant power parameter according to said control command to change a drive frequency of said power signal to generate variation of luminance of said gas discharge lamp.
19. The control method for light adjusting as claimed in claim 18, wherein said gas discharge lamp is in a luminous mode of the previous adjustment after said power switch is turned on, and said gas discharge lamp automatically adjusts itself from dim to bright state or vice versa,
20. The control method for light adjusting as claimed in claim 18, wherein said power parameter is a magnitude of current, voltage, frequency, or period.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510097987.4 | 2005-09-02 | ||
| CN200510097987A CN1925714B (en) | 2005-09-02 | 2005-09-02 | Multistage light modulation control device for gas-discharge lamp and light modulation control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2558757A1 true CA2558757A1 (en) | 2007-03-01 |
Family
ID=37137213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002558757A Abandoned CA2558757A1 (en) | 2005-09-01 | 2006-09-01 | A reversible dimmer device of gas discharge lamps and the control method for light adjusting thereof |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JP4637804B2 (en) |
| KR (1) | KR20070026250A (en) |
| CN (1) | CN1925714B (en) |
| CA (1) | CA2558757A1 (en) |
| DE (1) | DE102006041025A1 (en) |
| FR (1) | FR2891433B1 (en) |
| GB (1) | GB2429855A (en) |
| NL (1) | NL1032407C2 (en) |
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| CN101568219B (en) * | 2008-04-23 | 2013-01-09 | 鸿富锦精密工业（深圳）有限公司 | Light source driving device |
| US20100072917A1 (en) * | 2008-09-23 | 2010-03-25 | O'gorman Tony | System for Control of Ballast Illumination in Step Dimming and Continuous Dimming Modes |
| US8044608B2 (en) * | 2008-12-12 | 2011-10-25 | O2Micro, Inc | Driving circuit with dimming controller for driving light sources |
| CN101478855B (en) * | 2009-01-10 | 2011-12-07 | 吴广毅 | Lamp light brightness regulating apparatus and method thereof |
| CN101707836B (en) * | 2009-11-12 | 2013-05-01 | 英飞特电子（杭州）股份有限公司 | Circuit for dimming through power switch |
| CN102948256B (en) * | 2009-11-26 | 2015-11-25 | 辛智烨 | There is the energy-saving LED of dimmed function and mood-Lighting control function |
| CN201663749U (en) * | 2010-03-16 | 2010-12-01 | 陈敬昕 | Dimmable ballast device of electrodeless lamp |
| CN103052242B (en) * | 2010-05-20 | 2014-09-10 | 国家电网公司 | Dimming lamp |
| CN102014543B (en) | 2010-07-02 | 2011-12-28 | 凹凸电子（武汉）有限公司 | Drive circuit and method of drive light source and controller |
| CN102378440B (en) * | 2010-08-23 | 2015-09-23 | 普诚科技股份有限公司 | Use light-dimming method and the related lighting system of suitching type switch |
| CN102387639B (en) * | 2011-02-16 | 2013-08-21 | 凹凸电子（武汉）有限公司 | Driving circuit, method and dimming controller for driving light source |
| TWI478627B (en) * | 2012-04-20 | 2015-03-21 | Lextar Electronics Corp | Illumination device with adjustable luminance and luminance adjustment method thereof |
| TWI486736B (en) | 2012-12-06 | 2015-06-01 | Yu Sheng So | Method and equipment for configuring lighting |
| CN103124458B (en) * | 2013-01-04 | 2016-04-06 | 安提亚科技股份有限公司 | The control method of LED matrix and colour temperature and brightness and device |
| CN103124459B (en) * | 2013-01-04 | 2016-05-25 | 安提亚科技股份有限公司 | The light-dimming method of adjustable color and brightness and light modulating device and illuminator |
| CN103687223A (en) * | 2013-12-02 | 2014-03-26 | 广西玖典电子新材料有限公司 | LED variable color bulb |
| JP6981132B2 (en) * | 2017-09-20 | 2021-12-15 | セイコーエプソン株式会社 | Lamp drive device, light source device, projector, and lamp drive method |
| CN110307865A (en) * | 2019-07-31 | 2019-10-08 | 简筇 | A kind of infrared and microwave remote sensor of intelligent wireless parameter regulation |
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| ATE172333T1 (en) * | 1990-08-13 | 1998-10-15 | Electronic Ballast Tech | REMOTE CONTROL FOR AN ELECTRICAL DEVICE |
| US5729097A (en) * | 1990-11-29 | 1998-03-17 | Holzer; Walter | Method and device for controlling electric discharge lamps with electronic fluorescent lamp ballasts |
| DE4037948A1 (en) * | 1990-11-29 | 1992-06-04 | Holzer Walter | METHOD AND DEVICE FOR CONTROLLING GAS DISCHARGE LAMPS WITH ELECTRONIC CONTROL GEAR |
| JP2567540Y2 (en) * | 1991-03-26 | 1998-04-02 | 松下電工株式会社 | Lighting equipment |
| US5373218A (en) * | 1993-05-04 | 1994-12-13 | Motorola Lighting, Inc. | Toggle brightening circuit for powering gas discharge lamps and method for operating gas discharge lamps |
| US5872429A (en) * | 1995-03-31 | 1999-02-16 | Philips Electronics North America Corporation | Coded communication system and method for controlling an electric lamp |
| US5808423A (en) * | 1996-05-10 | 1998-09-15 | Philips Electronics North America Corporation | Lighting control for reducing energy consumption |
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| US6486616B1 (en) * | 2000-02-25 | 2002-11-26 | Osram Sylvania Inc. | Dual control dimming ballast |
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| GB0508246D0 (en) * | 2005-04-25 | 2005-06-01 | Doyle Anthony J | Brightness control of fluorescent lamps |
-
2005
- 2005-09-02 CN CN200510097987A patent/CN1925714B/en not_active Expired - Fee Related
-
2006
- 2006-09-01 CA CA002558757A patent/CA2558757A1/en not_active Abandoned
- 2006-09-01 DE DE102006041025A patent/DE102006041025A1/en not_active Ceased
- 2006-09-01 NL NL1032407A patent/NL1032407C2/en not_active IP Right Cessation
- 2006-09-01 FR FR0653558A patent/FR2891433B1/en active Active
- 2006-09-01 GB GB0617281A patent/GB2429855A/en not_active Withdrawn
- 2006-09-02 KR KR1020060084445A patent/KR20070026250A/en not_active Application Discontinuation
- 2006-09-04 JP JP2006239043A patent/JP4637804B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
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| GB0617281D0 (en) | 2006-10-11 |
| FR2891433B1 (en) | 2015-05-08 |
| CN1925714B (en) | 2010-05-05 |
| JP2007073515A (en) | 2007-03-22 |
| JP4637804B2 (en) | 2011-02-23 |
| NL1032407A1 (en) | 2007-03-05 |
| FR2891433A1 (en) | 2007-03-30 |
| CN1925714A (en) | 2007-03-07 |
| NL1032407C2 (en) | 2007-08-08 |
| DE102006041025A1 (en) | 2007-04-12 |
| KR20070026250A (en) | 2007-03-08 |
| GB2429855A (en) | 2007-03-07 |
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